CPS Series Photovoltaic Grid Connection Inverter
物料:
CPS SCA50/60KTL-DO/US-480 英文版说明书
料号:
9.0020.0334A0
纸张大小:
大 32 开
封面制作要求:
200g 铜版纸附亚膜封面彩色印刷
内页制作要求:
70g 除静电双胶纸黑白印刷
CPS SCA Series Grid-tied PV Inverter
CPS SCA50KTL-DO/US-480
and SCA60KTL-DO/US-480
Installation and Operation Manual - Rev 2.1
CHINT POWER SYSTEMS AMERICA CO.
2
Table of Contents
Before You Start… ................................................................................................ 1
Chapter 1 IMPORTANT SAFETY INSTRUCTIONS ...................................... 2
Chapter 2 Overview ............................................................................................. 5
2.1 Inverter for grid-tied PV systems ..................................................... 5
2.2 Product Features............................................................................... 5
2.3 Product Protection Functions ........................................................... 6
2.4 Schematic Diagram and Circuit Design ........................................... 7
2.5 Appearance and Main items Description .......................................... 8
2.6 Anti-islanding Detection .................................................................. 9
2.7 DC Ground fault Protection ............................................................. 9
2.8 Surge Suppression ............................................................................ 9
2.9 DC Arc-fault Protection ................................................................... 9
Chapter 3 Installation .......................................................................................... 10
3.1 Recommendations before Installation ............................................ 13
3.2 Mechanical Installation .................................................................. 14
3.3 Electrical Installation ..................................................................... 26
3.3.1 Removing/Replacing the Wiring Box Cover:.............................. 26
3.3.2 DC Connection............................................................................ 33
3.3.3 AC and Ground Connection ........................................................ 45
3.3.4 Communication Connection........................................................ 53
Chapter 4 Commissioning.................................................................................... 60
4.1 Commissioning Checklist .............................................................. 60
4.1.1 Mechanical Installation ............................................................... 60
4.1.2 Cable Connections ...................................................................... 60
4.1.3 Electrical Check .......................................................................... 60
4.2 Commissioning Steps..................................................................... 61
Chapter 5 User Interface...................................................................................... 66
5.1 Description of LCD Panel .............................................................. 66
5.2 Operation State............................................................................... 68
5.3 Interface Types ............................................................................... 69
5.4 Main Menu..................................................................................... 71
5.4.1 Operation Information ................................................................. 72
5.4.2 Setting ......................................................................................... 73
5.4.3 Power ON/OFF ........................................................................... 97
5.4.4 History ........................................................................................ 98
5.4.5 Device Information ..................................................................... 99
Chapter 6 Operation............................................................................................. 100
6.1 Start-Up ..........................................................................................100
6.2 Shut-Down .....................................................................................100
6.3 Operation Mode .............................................................................101
6.4 Grid-tied Power Generation ...........................................................103
Chapter 7 Maintenance and De-installation ....................................................... 104
7.1 Fault Shutdown and Troubleshooting .............................................104
7.1.1 LED Fault and Troubleshooting ..................................................104
7.1.2 LCD Fault and Troubleshooting ..................................................105
7.2 Product Maintenance...................................................................... 114
7.2.1 Check Electrical Connections ..................................................... 114
7.2.2 Clean the Air Vent Filter.............................................................. 114
7.2.3 Replace the Cooling Fans............................................................ 114
7.2.4 Replace the Inverter .................................................................... 116
7.3 De-installing the Inverter ............................................................... 117
Chapter 8 Technical Data..................................................................................... 119
Chapter 9 Limited Warranty ............................................................................... 124
Before You Start…
This Installation and Operation manual contains important information, safety
guidelines, detailed planning and setup information for installation, as well as
information about configuring, operating and troubleshooting the
CPS SCA50KTL-DO/US-480 and CPS SCA60KTL-DO/US-480
3-Phase String Inverters.
Be sure to read this manual carefully before
operating or servicing the inverters.
Thank you for choosing a CPS 3-Phase String Inverter.
These PV Inverters
are high performance and highly reliable products specifically designed for the
North American Solar market.
Installation, commissioning, troubleshooting, and maintenance of the inverter
must only be performed by qualified personnel. If you encounter any
problems during installation or operation of this unit, first check the user
manual before contacting your local dealer or supplier. This user manual is
applicable for the following models:
CPS SCA50KTL-DO/US-480 and CPS SCA60KTL-DO/US-480
Instructions inside this user manual will help you solve most installation and
operation difficulties. Contact your local supplier if the problem still exists.
Please keep this user manual on hand for quick reference.
1
Chapter 1 IMPORTANT SAFETY INSTRUCTIONS
(SAVE THESE INSTRUCTIONS)
Please read this user manual carefully before installation of the product.
CPS reserves the right to refuse warranty claims for equipment damage if the
user fails to install the product according to the instructions in this manual.
Warnings and symbols in this document
DANGER:
DANGER indicates a hazardous situation which, if not avoided, will
result in death or serious injury.
WARNING:
WARNING indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION:
CAUTION indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
NOTICE:
NOTICE indicates a hazardous situation which, if not avoided, could
result in the inverter working abnormally or property loss.
INSTRUCTION:
INSTRUCTION indicates important supplementary information or
provides skills or tips that can be used to help you solve a problem or
save you time.
2
Markings on the product
HIGH VOLTAGE:
This inverter operates with high voltages. All work on the inverter
must only be performed as described in this document.
HOT SURFACE:
The inverter is designed to meet international safety standards, but
surfaces can become hot during operation. Do not touch the heat
sink or peripheral surfaces during or shortly after operation.
EARTH GROUND:
This symbol marks the location of the grounding terminal, which
must be securely connected to Ground through the AC EGC
(Equipment Grounding Conductor) to ensure operational safety.
WARNING:
All the installation and wiring connections should only be performed by
qualified technical personnel.
Disconnect the inverter from the PV
modules and the AC grid before maintaining or servicing the
equipment.
Risk of electric shock and fire.
Use only with PV modules that have
a maximum system voltage of rating of 1000V or higher.
Electric shock Hazard.
The DC conductors of this photovoltaic
system are normally ungrounded but will become intermittently
grounded without indication when the inverter performs the PV array
isolation measurement.
Shock Hazard.
sources.
The inverter is energized from both AC and DC
Disconnect all sources before servicing.
For continued protection against risk of fire, replace only with same
type and ratings of fuse.
3
DANGER:
Disconnect the inverter from the AC grid and PV modules before
removing covers or opening the equipment. Ensure hazardous high
voltage and energy inside the inverter has been discharged prior to
servicing. Wait at least 5 minutes after disconnecting from the DC
and AC sources before servicing or maintaining the inverter.
NOTICE:
The inverters are designed to only interconnect with an AC power
source as part of the public electric utility grid. Do not connect the AC
output of the inverters directly to any private electric utility power
equipment.
CAUTION:
CPS SCA50KTL-DO/US-480 and SCA60KTL-DO/US-480 inverters
weigh approximately 56kg (123.5 pounds).
The wirebox portion
weighs approximately 15kg (33 pounds).
Ensure the mounting bracket is properly installed before hanging the
inverter and wirebox on the bracket.
A team of two is recommended
to lift and place the inverter and wirebox into position.
INSTRUCTION:
Please check with your local electric utility supply company before
selecting a grid standard. If the inverter is operated with an incorrect
grid standard, the electric utility supply company may cancel the
interconnection agreement.
Placing the inverter into operation before the overall system complies
with the national codes, rules and safety regulations of the application
is also not permitted.
4
Chapter 2 Overview
2.1 Inverter for grid-tied PV systems
CPS SCA50KTL-DO/US-480 and SCA60KTL-DO/US-480 3-Phase String
Inverters are designed for use with carport, commercial rooftop, and large utility
scale PV grid-tied systems. The system is generally made up of PV modules, a
3-Phase String Inverter with a fused combiner/disconnect, and AC power
distribution equipment (Figure 2-1). The inverter converts the available DC energy
from the PV modules to AC power by synchronizing the output current to the same
frequency and phase as the AC grid.
All or part of the AC power is supplied to
local loads, and the surplus power is exported to the electric utility grid.
AC power
distribution
Bidirectional
electric meter
AC Grid
equipment
Figure 2-1 Grid-tied PV system
2.2 Product Features
 High conversion efficiency: Advanced 3-level conversion topology with
SVPWM; Max. efficiency: 98.8%;CEC efficiency: 98.5%
 Grid adaptability: IEEE 1547, Rule 21, and HECO SRDs applicable; Reactive
Power; >0.99 PF (±0.8 adjustable), Remote Active Power Curtailment.
 Flexible communication: Supports standard CPS Modbus RS485, SunSpec
Modbus, and TCP/IP communications to ensure compatibility with 3
monitoring and control systems.
 Wide DC input voltage range:
Operating DC Input Voltage Range:
200-950Vdc; Max DC input voltage: 1000V
5
rd
party
 Long Service Life: Uses thin-film capacitors to extend inverter's service life
 3 MPPTs: Multi-channel MPPT (Maximum Power Point Tracker) enable
maximum design flexibility and energy harvest optimization over the life of the
system.
 Wirebox option: The wirebox enables fused input of either discrete wiring
using the Standard wirebox, or an optional H4 wirebox with quick-fit connectors
for connection of industry standard cord sets.
 High protection degree:
Powder coated aluminum NEMA 4X enclosure
meets the demanding needs of both indoor and outdoor use.
 Intelligent Integration: Integrated load break
rated DC/AC disconnect
switches, and up to 15 fused string inputs eliminate the need for external DC
combiner boxes, simplifying installation.
2.3 Product Protection Functions

Reverse polarity protection of DC input

AC and DC Short circuit protection

Arc-fault detection and circuit interruption

Anti-islanding detection with bi-directional frequency perturbation

DC Input and AC output over-voltage protection

DC Input over-current protection

DC input insulation against ground monitoring

DC injection of AC output

AC output voltage and frequency monitoring

Leakage current against ground monitoring

Internal enclosure temperature monitoring

IGBT power module temperature monitoring
6
2.4 Schematic Diagram and Circuit Design
The basic electrical schematic diagram of CPS SCA50KTL-DO/US-480 and
SCA60KTL-DO/US-480 inverters are shown in Figure 2-2.
The input from PV source circuits passes through surge protection circuitry, DC
EMI wave filters, and independent DC-DC boost circuitry to achieve maximum
power point tracking and boost the voltages to a common DC bus. The inverter
uses line voltage and frequency measurements to synchronize to the grid and
converts the available PV energy to AC power by injecting balanced 3-phase AC
current into the electric utility grid.
Any high frequency AC component is
removed by passing through a two-stage relay and EMI wave filter to produce
high quality AC power.
Fuses
PV1+
PV1+
PV1+
PV1+
PV1+
PV2PV2PV2PV2PV2PV3+
PV3+
PV3+
PV3+
PV3+
PV3PV3PV3PV3PV3-
MPPT1
PV1+
PV1-
PV1PV1PV1PV1PV1PV2+
PV2+
PV2+
PV2+
PV2+
DC
Switch
AC
AC
Switch Output
DC SPD
L1
MPPT2
PV
Input
L2
PV2+
PV2-
L3
N
DC SPD
MPPT3
PV3+
PV3-
DC SPD
Three level
inverter
AFD
Figure 2-2 Schematic Diagram of the CPS SCA50/60KTL-DO/US-480 Inverter
7
2.5 Appearance and Main items Description
3
1
4
5 6 7
9
2
8
Figure 2-3 Diagram of the CPS SCA50KTL-DO/US-480 and
SCA60KTL-DO/US-480 Inverters
Main items of the Inverter:
1) Main inverter enclosure
2) Inverter wirebox
3) Inverter mounting bracket
4) Cooling fans
5) LED indicator lights
6) User LCD display
7) User Key buttons
8) DC switch: DC power on/off
9) AC switch: AC power on/off
8
2.6 Anti-islanding Detection
The SCA50KTL-DO/US-480 and SCA60KTL-DO/US-480 inverters include
Unintentional Islanding detection as required by UL1741/IEEE1547. The inverter
will continuously make bi-directional perturbations to the frequency of the output
current by injecting a small amount of reactive power in order to detect a
possible islanding condition. If the grid is stable, these small perturbations will
have negligible effects on the system voltage frequency. However, in an islanded
condition the changes in reactive power will force the frequency of the system
voltage to deviate significantly, which will trigger the inverter to cease operation
and disconnect from the grid.
2.7 DC Ground fault Protection
The inverters include residual current detection as part of the DC ground fault
detection method required by UL1741. If there is a ground fault in the PV array,
the ground fault detection circuitry will detect leakage current and trigger an
alarm. The inverter will cease operation if the leakage current exceeds 500mA.
2.8 Surge Suppression
Standard Waveform Peak Values
Surge Category
Ring Wave
Combination Wave
B
6kV/0.5kA
6kV/3kA

"Standard 1.2/50 μs - 8/20 us Combination Wave"

"Standard 0.5 μs - 100 kHz Ring Wave"
2.9 DC Arc-fault Protection
The inverters include DC Arc-fault detection compliant with UL 1699B. The
inverter will detect electrical noise that is indicative of a DC series arc.
detection of an acr-fault, the inverter will cease operation.
9
Upon
Chapter 3 Installation
This chapter describes the planning and installation procedures for the
SCA50KTL-DO/US-480 and SCA 60KTL-DO/US-480 inverters. Please read
carefully and install the products following the step-by-step instructions.
The inverter and other main items are shipped in two separate packages,
consisting of A.) the main inverter enclosure and B.) the wirebox, mounting
bracket, user manual, and accessory kit.
Before installation, please check that
the following items are included in the packages:
Table 3-1 Main Items
No.
(1)
(2)
Item
Main enclosure of
the PV inverter
Wiring box of the
PV inverter
Q’ty
Note
Box
1
A
1
B
(3)
Mounting bracket
1
(4)
User manual
1
(5)
Accessory kit
1
Bracket upon which the PV inverter
is hung and mounted
PV inverter installation and
operation manual
Kit contains all necessary hardware
and accessories for installation
10
B
B
B
Note that the items in the Accessory Kits vary between the Standard
wirebox and H4 wirebox, the items listed below:
Table 3-2 Accessory Kit (Standard wirebox)
No.
Item
(1)
M8 Expansion Anchors
Q’ty
Note
For attaching the mounting bracket to
8
a concrete wall or surface
M8×25mm machine
(2)
bolts with integrated
8
Used with M8 expansion anchors
lock washer
4 for securing the wiring box to the
(3)
M6 X18mm Phillips
screw
main enclosure; 6 for securing the
11
inverter to the mounting bracket; 1 for
the External Ground connection
(4)
5 pin PCB connector
plug
1
For the RS485 communication
30 for PV conductors, includes 3
(5)
#10 AWG Wire ferrules
33
(6)
M8 Nut
4
For the AC terminal block
(7)
M8 Flat washer
4
For the AC terminal block
(8)
M8 Spring washer
4
For the AC terminal block
spares
11
Table 3-3 Accessory Kit (H4 wirebox)
No.
Item
(1)
M8 Expansion Anchors
Q’ty
8
Note
For attaching the mounting bracket to
concrete wall or surface
M8×25mm machine
(2)
bolts with integrated
8
Used with M8 expansion anchors
lock washer
4 for securing the wiring box to the
(3)
M6 X18mm Phillips
screw
11
main enclosure; 6 for securing the
inverter to the mounting bracket; 1 for
the External Ground connection
(4)
5 pin PCB connector
plug
1
For the RS485 communication
(5)
PV Connector (Male)
15
For the PV input. #10 AWG contact
(6)
PV Connector (Female)
15
For the PV input. #10 AWG contact
(7)
Tool for PV Connector
1
For PV Connector
(8)
M8 Nut
4
For the AC terminal block
(9)
M8 Flat washer
4
For the AC terminal block
(10)
M8 Spring washer
4
For the AC terminal block
INSTRUCTION:
The items in the Accessory Kit Table 3-2 and Table 3-3 above are for
the standard configuration. The accessories provided may vary if
optional parts are purchased.
12
3.1 Recommendations before Installation
See Chapter 8, Technical Data for specification ranges and limits
NOTICE:
The
allowable
ambient
temperature
range
for
the
SCA50KTL-DO/US-480 and SCA 60KTL-DO/US-480 inverters is
defined based on the following conditions;
Condition 1: -40C to 70C, Inverter not installed, and in storage (in
packaging or unpackaged).
Condition 2: -30C to 60C, Inverter installed, connected to electric
utility grid and operating during daylight hours.
Condition 3: No low temp limit to 70C, Inverter installed, connected
to electric utility grid but non-operating (daylight or nighttime hours).
 Check that the inverter environmental specifications (protection degree,
operating temperature range, humidity and altitude, etc) meet the
requirements of the specific project location.
 Make sure that the electric utility grid voltage is within range for the grid
standard chosen.
 Ensure that the local electric utility grid authority has granted permission to
connect to the grid.
 Installation personnel must be qualified electricians or those who have
received professional training.
 Wear and use proper PPE (personal protective equipment) during
installation.
 Sufficient space according to Figure 3-3 and 3-4 must be provided to allow
the inverter cooling system to operate normally.
 Install the inverter away from flammable and explosive substances.
 Avoid installing the inverter in locations that exceed the temperature limits
specified for the inverter to prevent undesirable power loss.
 Do not install the inverter near an electromagnetic source which can
compromise the normal operation of electronic equipment.
13
3.2 Mechanical Installation
1) Dimensions
Figure 3-1 Dimensions of CPS SCA50/60KTL-DO/US-480 Inverter
2) Installation Method (see Figure 3-2):
Ensure that the mounting structure (wall, rack, roof, etc) is suitable to support
the weight of the inverter. Follow the mounting guidelines below:
(a) If the location permits, install the inverter vertically.
(b) If the inverter cannot be mounted vertically, it may be tilted backward to
horizontal.
(c) Do not mount the inverter leaning forward.
(d) Do not mount the inverter upside down.
14
Shade cover
ã
0¡
~9
15
¡ã
90
(a)
(b)
(c)
(d)
Figure 3-2 Inverter Mounting Options
NOTICE:
When the inverter is mounted backwards by ≤30° in an outdoor
environment, the CPS shade cover accessory must be installed on
the inverter to avoid direct sunlight.
15
3) Installation Space Requirement (see Figure 3-3):
The distances between the inverters or the surrounding objects should meet
the following conditions:
NOTICE:
The spacing between two adjacently mounted inverters must be
≥500mm (19.7 inches). Spacing should be enlarged for installation
locations with ambient temperature higher than 45°C. Ensure that
the air space around the inverter is well ventilated. The spacing
below the inverter is intended to ensure the LCD and Keypad height
are well positioned for the user, and may be descreased, however
consideration must be taken for locations known to flood or have
seasonal snow build up.
≥300mm
(11.8in.)
≥300mm
(11.8in.)
≥500mm
(19.7in.)
=600mm
(23.6in.)
Note:This dimension can be modified
according to installation requirements.
Figure 3-3 Inverter Wall Mounting Dimensions
INSTRUCTION:
If the inverter is installed on Unistrut or the array racking (instead of
solid wall), the space from the bottom of one inverter to the top of the
inverter below may be as small as 100mm (3.9in). The spacing below
may be as small as 300mm (11.8in).
16
8in.
24in.
12in.
12in.
12in.
Figure 3-4 Inverter Pillar or Column Mounting Dimensions
INSTRUCTION:
If the inverter is installed on a pillar or column (instead of solid wall),
the space from the bottom of one inverter to the top of the inverter
below may be as small as 12in (300mm).
17
4) Mounting the Inverter onto the Bracket
(1) Mark the 8 holes on the wall or bearing surface for attaching the inverter
250mm 250mm
(9.84in.) (9.84in.)
465mm
(18.3in.)
125mm(4.9in.)
(13.8in.)
(17.1in.)
≥350mm
≥435mm
mounting bracket as shown in Figure 3-5.
=874mm(34.4in.)
8-? 10.0
≥1100mm(min.)
480~500mm
(18.9~19.7in)
(43.3in)
Note:This dimension can be modified
according to installation requirements.
Figure 3-5 Dimensions of the bracket anchoring holes for wall mounting
18
(2) Drill holes at the marked positions with a 10mm (0.4in.) masonry bit and
insert the M8 Expansion Anchors ① into the holes; Fasten the Mounting
Bracket ② with the M8x25 Assembling Bolts ③ supplied with the Accessory
Kit. Figure 3-6 and 3-7.
Tools Required: Electric drill (Ф10mm/0.4in. masonry bit), No. 13 wrench
Figure 3-6 Drill holes, set Anchors, and tighten Assembling Bolts
1
2
3
Figure 3-7 Secure the Mounting Bracket
19
(3) Hang the inverter onto the mounting bracket as shown in Figure 3-8 and
Figure 3-9;
Lift mounting: Locate the lifting eyes at the top of the inverter. Use sling
rope or bar (inserted through both lifting eye nuts) to lift the inverter onto the
bracket. The minimum angle between the two sling ropes should be less
than 90 degrees.
Manual mounting: Two people are required to safely lift the inverter by the
handle positions marked in Figure 3-9, and mount it onto the bracket.
CAUTION:
The main enclosure of the CPS SCA50KTL-DO/US-480 and
SCA60KTL-DO/US-480 inverters is approx 56kg (123.5 pounds).
Ensure the mounting bracket is properly installed and secured
before hanging the inverter on the bracket. It is recommended to
have at least 2 people to mount the inverter due to the weight of
the equipment.
Figure 3-8 Mount the Main Enclosure on the Bracket by Lifting Sling
20
Figure 3-9 Grab Handle Position
(4) Install the wiring box
① Remove the cover plate at the bottom of the main enclosure. (see Figure
3-10)
Tool required: No.2 Phillips head screwdriver
Figure 3-10 Main Enclosure Cover Plate
21
② Remove screws securing the bulkhead cover at the top of the wiring box.
(see Figure 3-11)
Figure 3-11 Wiring Bulkhead Cover
Save the bulkhead cover and screws, and attached the cover to the left side
of the wiring box after the wiring box is attached to the inverter enclosure
(see step 6, Figure 3-13)
Tool required: No.2 Phillips head screwdriver
③ Secure the wiring box to the main enclosure by using the M6x18 screws
(4pcs) to fasten the wiring box. (see Figure 3-12)
Tool required: No. 10 Wrench, torque value of 4 N.m (35.4in-lbs)
22
Figure 3-12 Installation of the Wiring Box
(5) Attach the main enclosure and the wiring box to the mounting bracket with
the M6x18 screws (6 pcs). (see Figure 3-13)
Tool required: No.3 Phillips head screwdriver, torque value of 4N.m
(35.4in-lbs)
Figure 3-13 Secure the Main Enclosure and Wiring Box to the Bracket
23
(6) Attach the cover shown in Figure 3-11 to the left side of the wiring box. (see
Figure 3-14)
Tool required: No.2 Phillips head screwdriver, torque value of 1.6N.m
(14.2in-lbs)
Standard wirebox
H4 wirebox
Figure 3-14 Attach the Cover to the left side of the Wiring Box
24
(7) Optional - Install an anti-theft padlock when the installation is complete.
The anti-theft padlock is used to prevent the inverter from being stolen when
the equipment is installed outdoors. The inverter may be locked to the bracket,
as shown in Figure 3-15:
Figure 3-15 Location of the Anti-Theft Padlock
The anti-theft padlock shackle should meet the requirements of the
dimensions shown in Figure 3-16:
B
C
A
Recommended lock size:
A: Shackle diameter 3~6mm
B: Shackle width 20~50mm
C: Shackle height 20~50mm
Figure 3-16 Dimensions of Anti-Theft Padlock Shackle
25
3.3 Electrical Installation
3.3.1 Removing/Replacing the Wiring Box Cover:
Prior to installation, confirm the wiring box used as either the Standard wirebox
as shown in Figure 3.17(a) or H4 wirebox (Optional) as shown in Figure 3.17 (b).
Figure 3.17 (a) Standard wirebox
Figure 3.17(b) H4 wirebox
(1) Use a No.3 Philips head screwdriver to remove the 4 screws on the wiring
box and remove the cover. (See Figure 3-18)
Figure 3-18 Removing the Wiring Box Cover
(2) To replace the cover, install the cover and align the screws. Use a No.3
Philips head screwdriver to secure the 4 screws on the cover.
26
INSTRUCTION:
It is important to use hand tools (e.g. Screwdriver or T-handle, #3
Phillips) and not power drivers or other types of screw drivers. During
cover installation, it is recommended to hold the cover in alignment
with balanced force. Partially engage the screws into the threaded
inserts before tightening. Maintain alignment to avoid thread damage,
and after screws are fully engaged torque to 35.4 in-lbs (4N.m).
3.3.1.1 Bypass Terminal option for standard wirebox
Fuse Bypass Terminals are available as an optional accessory when external PV
string fused combiners are used.
The Bypass Terminals allow for larger single
conductors to be terminated at each MPPT within the wirebox, bypassing the
input fuses as shown in Figure 3-19.
Figure 3-19 Bypass Terminal option installed within the Standard wirebox
27
20.5in(520mm)
19.0in(483mm)
17.5in(445mm)
13.2in(336mm)
10.2in(258mm)
7.1in (180mm)
DC INPUT
COMM. PORT
DC INPUT
AC OUTPUT

For more details please see the user manual.
WARNING:
High touch current .
Earth connection essential before connecting supply.
4
1
2 3 2
Figure 3-20(a) Conduit Knock-out Locations on the Standard wirebox
①
Knock-outs for DC input, 1-1/2 inch Trade Size with removable gland
plate for custom size conduit (i.e. when use of 2 inch or 2-1/2 inch Trade
Size conduit is required) .
②
Knock-outs for communication, 3/4 inch Trade Size
③
Knock-out for AC output, 1-1/2 inch Trade Size with removable gland
plate for custom size conduit (i.e. when use of 2 inch or 2-1/2 inch Trade
Size is required)
④
External ground connection point
28
5
5
6
7
7 8
Figure 3-21(a) Internal Connection Points within the Standard wirebox
⑤ DC Input fuse holder/terminal
⑥
⑦
DC SPD (Surge Protective Device)
29
⑧
Internal ground terminal
AC output terminal block
9.4 in. (237mm)
3.9 in.
(99mm)
COMM. PORT
Do not disconnect under load.
5
AC OUTPUT
PV 1
1
2
1
2
1
2
3
4
5
4
5
4
5
PV 2
3
PV 3
3
WARNING:
High touch current .
Earth connection essential
before connecting supply.

1
2
For more details please
see the user manual.
3 4
6
Figure 3-20(b) Conduit Knock-out Locations on the H4 wirebox
①
H4 connectors
②
Knock-outs for communication, 3/4 inch Trade Size
③
Knock-out for AC output, 1-1/2 inch Trade Size with removable gland
plate for custom size conduit (i.e. when use of 2 inch or 2-1/2 inch Trade
Size is required)
④
External ground connection point
⑤
Knock-outs for communication in the right side of wirebox, 3/4 inch Trade
Size
⑥
Knock-out for AC output in the right side of wirebox, 1-1/2 inch Trade Size
30
3+
1+
2+
SPD
PE
7
L1
L2
L3
N
AC Output: Use 90 ¡ãC wire, either 3~2/0AWG copper or
2~2/0AWG aluminum, torque 110 in-lbs.
AC Ground: Use 90¡ãC copper wire, 6~ 4AWG for internal
grounding bar or external grounding nut , torque 50 in-lbs.
8
10
9
Figure 3-21(b) Internal Connection Points within the H4 wirebox
⑦ DC Input fuse holder
⑨
⑧
DC SPD (Surge Protective Device) ⑩
31
Internal ground terminal
AC output terminal block
When using the Standard wirebox, choose the DC conductor size and material
for the inverters according to the following configuration table:
Table 3-3 DC Cable Specifications
Terminal
Cable
DC input
(﹢/﹣)
#14-6AWG (Copper only) when terminating to the fuse holders
#6~2AWG (Copper or Aluminum) when using the Bypass Terminal kit
The SCA50/60KTL-DO/US-480 and SCA50/60KTL-DO/US-480 inverters
operate with ungrounded arrays, although the PV system requires a DC EGC
(equipment grounding conductor) to ensure operational safety.
3+
1+
2+
SPD
PE
Figure 3-22(a) Internal Grounding Points within the Standard wirebox
L1
L2
L3
N
AC Output:Use 90¡ãC wire, either 3~2/0AWG copper or
2~2/0AWG aluminum, torque 110 in-lbs.
AC Ground:Use 90¡ãC copper wire, 6~4AWG for internal
grounding bar or external grounding nut, torque 50 in-lbs.
Figure 3-22(b) Internal Grounding Points within the H4 wirebox
32
3.3.2 DC Connection
1) Working mode
CPS SCA50KTL-DO/US-480 and SCA60KTL-DO/US-480 inverters include
three MPPTs that are electrically divided into separate PV input zones: PV
Input-1, PV Input-2, and PV Input-3. Each 5 string PV input zone operates as
a separate and independent MPP Tracker.
Each MPPT employs a method
known as perturb and observe for seeking and tracking the maximum power
point along the I/V curve of the PV array.
During operation each MPPT will
make small adjustments to the PV voltage and then executes a power
measurement; if the PV power increases, further voltage adjustments in that
same direction are performed until the PV power no longer increases.
Inverter
PV
In1
PV
In2
n1 = n2 = n3 = n4 = n5
n6 = n7 = n8 = n9 = n10
PV
In3
n11 = n12 = n13 = n14 = n15
Figure 3-23 Independent Mode
INSTRUCTION:
When designing and configuring the PV system ensure each PV string
within a single PV input zone includes the same module type (Mfg and
ratings), series module count, and module orientation (tilt and azmuth)
in order to maximize MPPT performance and energy harvest.
33
Table 3-4 DC Input Specifications
Specification
(Independent - per MPPT)
Model
SCA50KTL-DO/US-480
SCA60KTL-DO/US-480
Max PV Power
25kW
30kW
Max PV Voltage
1000Vdc
1000Vdc
Start-up Voltage / Power
330 / 80W
330 / 80W
Operating Voltage
200-950Vdc
200-950Vdc
MPPT Voltage Range
480-850Vdc
540-850Vdc
Max Operating Current
32A
38A
Maximum PV Current
(Isc x 1.25)
60A
60A
2) DC fuse configuration
The CPS SCA50KTL-DO/US-480 and SCA60KTL-DO/US-480 inverter
wireboxes include touchsafe fuseholders and 15A DC fuses as a factory
standard.
Ensure that the appropriate fuse values are used depending on
the configuration of PV string and by performing PV fuse sizing calculations for
each string.
1) Each DC input for the PV strings requires fuse protection.
2) The voltage rating of the fuse must be at least 1000Vdc.
3) The ampere rating of the fuse is generally selected as > 1.56 × Isc of
the PV string.
34
3) DC fuse selection
Verify and select the appropriate fuses for installation depending on the
configuration of the PV strings.
Table 3-5 DC Fuse selection
Brand
50-60
kW
Standard fuses
20A
25A
30A
SPF015
SPF020
SPF025
SPF030
15A/1000V
20A/1000V
25A/1000V
30A/1000V
Littelfuse
INSTRUCTION:
The 1000VDC Littelfuse KLKD fuse series are recommended as
replacement fuses if neccessary. Detailed fuse information is
available at http://www.littelfuse.com/.
The touchsafe fuse holders and wirebox internal factory wiring are
designed to accept either a 20A, 25A, or 30A rated fuse for combined
input strings if needed. CPS allows replacement of the factory
installed 15A fuses with appropriate ampere ratings, however CPS
does not provide nor stock these fuses.
When using either 25A or 30A fuses, the fuses should not be installed
in adjacent fuse holders.
NOTICE:
Use of different fuses or incorrectly sized fuses can cause damage to
equipment or create unsafe working conditions. Any damage resulting
from incompatible fuses is not covered by the CPS warranty.
35
4) DC Cable Connection
To ensure the optimum performance of the inverter, please read the following
guidelines before performing any DC connections:
(a) Confirm the DC configuration referring to Table 3-5 and ensure that the
maximum open circuit voltage of the PV modules is lower than 1000Vdc
under any conditions;
(b) Confirm that the PV strings for each MPPT of the inverter are of the
same type and specification before connection. The number, orientation, and tilt of PV strings may differ for different applications.
(c) Configure the external wiring according to the following conditions:
Table 3-6 DC Input Configuration
PV
String
Inputs
15
14
13
12
11
10
9
8
7
6
5
4
Configuration for
each MPPT zone
PVIn1, PVIn2, PVIn3
5/5/5
5/5/4
5/4/4
4/4/4
4/4/3
4/3/3
3/3/3
3/3/2
3/2/2
2/2/2
2/2/1
2/1/1
DC Wire
Range
Terminal
Torque
Connect to:
#14-6AWG
#14-6AWG
#14-6AWG
#14-6AWG
#14-6AWG
#14-6AWG
#14-6AWG
#14-6AWG
#14-6AWG
#14-6AWG
Mixed**
Mixed**
30 in-lbs
30 in-lbs
30 in-lbs
30 in-lbs
30 in-lbs
30 in-lbs
30 in-lbs
30 in-lbs
30 in-lbs
30 in-lbs
Mixed**
Mixed**
3
1/1/1
#6~2 AWG
50 in-lbs
2
1/1/0
#6~2 AWG
50 in-lbs
1
1/0/0
#6~2 AWG
50 in-lbs
PV Fuseholder
PV Fuseholder
PV Fuseholder
PV Fuseholder
PV Fuseholder *
PV Fuseholder *
PV Fuseholder *
PV Fuseholder *
PV Fuseholder *
PV Fuseholder *
Mixed**
Mixed**
Bypass
terminals
Bypass
terminals
Bypass
terminals
*Note that the provided fuse is 15A, your string combination may require a
larger rated fuse. Always verify the Isc rating of the input prior to connecting
to the fuse holder.
**Mixed input signifies a combination of fuse holder connections and fuse
bypass terminal utilization. Such combinations are very rare, but possible.
36
NOTICE:
Note 1: The temperature rating of the input wiring should be no less
than 90°C (194°F).
Note 2: The recommended fuse values are configured based on the
condition that the input strings are the same (module type and length).
(d) Ensure correct polarity of the PV Strings before terminating the DC
cables. Referring to Figure 3-24, the wiring from the PV string pairs
must be checked according to the following steps:
i.
Use a multi-meter to measure the PV strings’ cable ends and check
the polarity.
ii. The positive (+) terminal of cable should match the positive (+)
terminal of inverter’s DC input.
iii. The negative (-) terminal of cable should match the negative (-)
terminal of inverter’s DC input.
NOTICE:
It is important to use a multi-meter to check the polarity of the DC
input cables to avoid any risk of reverse polarity.
Figure 3-24 Polarity Check
37
3.3.2.1 DC connection for Standard wirebox
(Refer to Section 3.3.2.2 for the H4 wirebox DC connection)
(a) Remove the factory installed liquid-tight hole plugs from the DC
knockout holes in the wiring box, and install 1-1/2 inch Trade Size
conduit and conduit fittings Ensure all fittings are properly
tightened, and route the DC cables through the conduit into the
5
wiring box.
4
5
3
IN3+
2
1
5
4
3
IN2+
2
3
IN2
2
1
4
1
5
5
5
4
1
4
L2
L3
N
2
3
IN1
3
2
IN1+
3
IN3
Use 90¡ã
C copper wire only,14~8AWG for fuse holders, torque 30 in-lbs. 6~2AWG for bypass terminals (Optional), torque 50 in-lbs.
Use 90¡ã
C copper wire only,14~8AWG for fuse holders, torque 30 in-lbs. 6~2AWG for bypass terminals (Optional), torque 50 in-lbs.
4
L1
AC Output:Use 90¡ãC wire, either 3~2/0AWG copper or
2~2/0AWG aluminum, torque 110 in-lbs.
AC Ground: Use 90¡ãC copper wire, 6-4AWG for internal
grounding bar or external grounding stud , torque 50 in-lbs.
1
2
C copper
Use 10~6AWG 90¡ã
wire, torque 20 in-lbs.
DC Ground
1
Figure 3-25 DC Input Cable Connection of Standard wirebox
(b): Terminate the DC cables from the PV string pairs to the fuse holders
for each MPPT (PVIn1, PVIn2, PVIn3). Installation and proper crimp
of wire ferrules are recommended prior to termination. Tighten the
screw clamps, as shown in Figure 3-25.
Note: If you are using the fuse bypass- skip this step
Tools required: #2 Phillips bit, Torque driver, and Ferrule crimp tool.
Torque value: 2.3Nm (20 in-lbs).
38
(c): Optionally all DC input cables from the PV string pairs may be routed
through a single larger knock-out hole inside the wiring box. The wiring box
includes removable gland plates that may be drilled or punched for up to 2 -1/2
inch Trade Size conduit. Refer to Fig 3-26.
DC INPUT
COMM. PORT
DC INPUT

For more details please see the user manual.
WARNING:
High touch current .
Earth connection essential before connecting supply.
Fig 3-26 DC input through single knockout hole
(1) Remove the M6x18 screws (4 pcs) securing the DC gland plate to
the wiring box. (see Figure 3-26)
(2) Remove the DC gland plate and rubber gasket
(3) Use a punching tool to create desired hole size in the gland plate.
(4) Reattach the rubber gasket and DC gland plate to the wiring box with
the M6x18 screws (4 pcs).
(5) Tool required: No.3 Phillips head screwdriver, torque value of 4Nm
(35.4in-lbs)
39
3.3.2.2 DC connection for H4 wirebox
(a) Ensure correct polarity of the PV Strings before terminating the DC input
cables in order to avoid risk of reverse polarity.
NOTICE:
The Amphenol H4 connectors provided within the Accessory Kits
must be used for the DC input. Use of incompatible connector types
may create an improper contact and cause unforseen problems.
(b) Cable preparation and stripping process:
Strip the cables 0.276 inches (7.0 mm) and be careful NOT to nick conductors.
Amphenol specified strip tool (H4TS0000) can be used in this step. Adjust the
striper stopper and put the cable in corresponding notch to strip to 7mm length.
Figure 3-27 Cable strip length
(c)
Insertion process solid contacts:
When you insert striped cable into contact barrel, always insure all conductor
strands are captured in the contact barrel and the conductors are visible in the
inspection hole.
Figure 3-28 Cable insertion process
40
Table 3-7 Contact terminals for H4 connectors
No.
Item
Function
Socket solid contact for
1
Positive DC cable
Pin solid contact for
2
(d)
Negative DC cable
Crimp process solid contacts:
The Amphenol specified crimp tool (H4TC0001) should be used in this step.
Insert the contact into the corresponding crimping notch or locator (male or
female) taking into account the cable size used. Insert the stripped cable end
until the insulation comes up against the crimp insert. Completely close the
crimping pliers.
Figure 3-28 Cable/Crimp process
41
(e)
Assembly process connector:
Insert contact cable assembly into back of male and female connector. A “click”
should be heard or felt when the contact cable assembly is seated in correct
position. Contacts cannot be removed once seated. See Fig 3-29 and 3-30.
Figure 3-29 Assemble male connector with DC positive cable
Figure 3-30 Assemble female connector with DC negative cable
(f)
Connector body tightening:
The back cap must be closed using a torque of approx 2.7Nm (24in-lbs).
Amphenol specified hand wrench tool (H4TW0001) can be used in this step
with the Amphenol open-end back cap spanner (H4TE0000) or socket
wrench (H4TF000) as shown in Figure 3-31
Figure 3-31 Connector body tightening
42
NOTICE:
Confirm the following points before connecting the assembled H4 DC
cables to the inverter:
1.
Check to be sure the Gnd cable is well connected. Refer to
Section 3.3.3 for detailed information regarding the ground
connection.
2.
Ensure the DC Disconnect switch is in the OFF position.
(g) Install the assembled H4 DC cable connectors with the respective
mating positive and negative connectors on the H4 wirebox.
Terminate the DC cables from the PV string pairs to the PVIn1, PVIn2,
and PVIn3 terminals, as shown in Figure 3-32:
Figure 3-32 Install assembled H4 DC cable connectors
43
4) Individual Maximum Power Point Tracking
The inverter is designed with three separate MPP Trackers (MPPT) which
operate independently. Independent mode can be very useful for sites with
partial shading of the array or with arrays consisting of different tilt or azmuth.
PV1+
PV1-
1
2
3
4
5
1
2
3
4
5
PV2+
1
2
3
4
5
PV2-
1
2
3
4
5
PV3+
PV3-
1
2
3
4
5
1
2
3
4
5
IN1+
IN1-
IN2+
IN2-
Inverter
IN3+
IN3-
Figure 3-30 Three MPPTs Operating Independently
INSTRUCTION:
The three MPPT zones can be considered as three separate
inverters, however PV power should be balanced as much as
possible between the three MPPT zones. See Table 3-6 for
string/zone combinations.
NOTE 1: Always attempt to connect an equal number of PV source
circuits to PVIn1, PVIn2 and PVIn3 in order to optimize the individual
MPPT zone as well as total inverter operation and energy harvest.
NOTE 2: Connecting all of the inputs at zone “PVIn1” will result in
only utilizing 33% of the inverter power.
44
3.3.3 AC and Ground Connection
The following describes how to connect the AC and ground cables
between the inverter and the AC grid:
1) Remove the liquid-tight hole plug from the AC input of the wiring box
and install 1-1/2 inch conduit and conduit fittings into the hole. Then
route the cables through the conduit inside the wiring box.
2) The inverter supports 2 kinds of cable connection on the AC side
depending on the grounding connection method chosen. The cable
set-up procedures are illustrated below.
Table 3-8 Tools Required for Cable termination
No.
Tools
Remark
1
5mm flat screwdriver
Internal grounding bar
2
#3 Phillips head screwdriver
External grounding
3
14mm hex socket wrench
AC terminal block
4
Diagonal pliers
Cut cable
5
Wire stripping pliers
Remove jacket
6
Crimping pliers
Crimp terminal
Table 3-9 Torque value
AC output terminal block
15 N-m (132 in-lbs)
Internal grounding bar
5.65 N-m (50 in-lbs)
Internal grounding stud
5.65 N-m (50 in-lbs)
External grounding point
5.65 N-m (50 in-lbs)
45
Choose the cables for inverters according to the following configuration table:
Table 3-10 Cables specifications
Position
Cable
AC output
#3~2/0AWG(Copper)
#2AWG recommended(Copper)
(L1/L2/L3/N)
#2~2/0AWG(Aluminum)
#1AWGrecommended(Aluminum)
Gnd (EGC)
#6~4AWG(Copper)
#6AWG recommended (Copper)
1
L2
L3
N
L1
L2
L3
N
AC Output: Use 90¡ãC wire, either 3~2/0AWG copper or
2~2/0AWG aluminum, torque 110 in-lbs.
AC Ground: Use 90¡ãC copper wire, 6-4AWG for internal
grounding bar or external grounding stud, torque 50 in-lbs.

For more details please see the user manual.
WARNING:
High touch current .
Earth connection essential before connecting supply.
The dimension limited
of lug terminal
? 8(min)
21(max)
24,5(max)
12,5(max)
L1
AC Output:Use 90¡ãC wire, either 3~2/0AWG copper or
2~2/0AWG aluminum, torque 110 in-lbs.
AC Ground: Use 90¡ãC copper wire, 6-4AWG for internal
grounding bar or external grounding stud, torque 50 in-lbs.
2
? 11,5(max)
? 19(max)
Figure 3-31 AC Output and Ground Cable Connection
46
(1) Use the OT type terminal to connect the Connect the AC (L1, L2, L3,
N) cables to the AC terminal block and connect the PE cable to the
internal grounding terminal block. (See the 1
st
graph in Figure 3-31)
Set up the cables referring to Figure 3-32.
OT type terminal,4pcs
Pre-insulated end ferrule
1pcs
Core wire
Pre-insulated end ferrule
Core wire
OT type terminal
Figure 3-32 AC output and ground cable set up
NOTICE:
Please connect the Ground cable before AC cable.
It is required to use the AL9CU OT type terminal if you chosen the
aluminum cable for AC output.
(2) Use the OT type terminal to Connect the AC (L1, L2, L3, N) cables
to the terminal block and use the OT type terminal to connect the
ground cable to the external grounding point at the bottom of the
wiring box. (see the 2nd image in Figure 3-31 ) The grounding point
is located at the bottom of the Standard wirebox as shown in
Figure 3-34(a), the H4 wirebox as shown in Figure 3-34(b).
47
OT type terminal for AC 4pcs
OT type terminal 1pcs
Core wire
OT type terminal for AC
Core wire
OT type terminal
Figure 3-33 AC output and ground cable set up
NOTICE:
Please connect the Ground cable before AC cable.
It is required to use the AL9CU OT type terminal if you chosen the
aluminum cable for AC output.
Figure 3-34(a) External Ground point Location of Standard
wirebox
48
9.4 in. (237mm)
3.9 in.
(99mm)
COMM. PORT
Do not disconnect under load.
AC OUTPUT
PV 1
1
2
1
2
1
2
3
4
5
4
5
4
5
PV 2
3
PV 3
3
WARNING:
High touch current .
Earth connection essential
before connecting supply.

For more details please
see the user manual.
Figure 3-34(b) External Ground point Location of H4 quick-fit
connectors wirebox
(3) Optionally all AC input cables may be routed through a single larger
knock-out hole inside the wiring box. The wiring box includes
removable gland plates that may be drilled or punched for up to 2 -1/2
inch conduit. Refer to Fig 3-35.
DC INPUT
COMM. PORT
DC INPUT

For more details please see the user manual.
WARNING:
High touch current .
Earth connection essential before connecting supply.
Fig 3-35 AC Input through single knock-out hole
49
(6) Remove the M6x18 screws (4 pcs) securing the AC gland plate to
the wiring box. (see Figure 3-35)
(7) Remove the AC gland plate and rubber gasket
(8) Use a punching tool to create desired hole size in the gland plate.
(9) Reattach the rubber gasket and AC gland plate to the wiring box with
the M6x18 screws (4 pcs). Tool required: No.3 Phillips head
screwdriver, torque value of 4N.m (35.4in-lbs)
(10) When the output of the inverter is connected to the grid, an external
AC circuit breaker is required to be installed to safely disconnect the
inverter from the grid should an overcurrent occur.
(11) The Grid connection type must be a 4-wire Wye, grounded neutral
(L1, L2, L3, N, PE).
Either 3 pole or 4 pole AC circuit breaker may be selected as per the
following recommendation. Selecting a breaker of another size may either
result in nuisance tripping or rejection from the AHJ.
Table 3-10 Specification of AC breaker selection
Inverter
AC breaker rated current(A)
CPS SCA50KTL-DO/US-480
80
CPS SCA60KTL-DO/US-480
100
Acceptable transformer configurations:
Description
Configuration
50
Inverter
Compatibility
4 Wire WYE
(3 phase + Neutral +GND)
Compatible with
SCA50/60KW
Note that there are no
restrictions to the
connection type on the
secondary (grid side)
transformer winding.
Other Configurations
All other configurations not
mentioned in this document,
such as Corner Grounded
Delta
Not compatible with
SCA50/60KW
Fig 3-36AC Acceptable Transformer Winding Configurations
When interfacing with a Wye-grounded transformer winding, a neutral is
required. Since the neutral is used by the inverter for voltage sensing only, the
neutral does not carry current. The size of the neutral may be reduced to a
conductor no smaller than the EGC or 8 AWG.
When installing multiple inverters for parallel operation connected to a single
transformer winding, the kVA rating of the transformer must be at least 105%
of the total connected inverters’ combined kVA rating. Up to 70 inverters may
be connected in parallel for use with a single transformer.
51
Note: If aluminum conductors are being used CPS recommends the following
steps to prepare each conductor prior to landing and terminating to the AC
terminal block:
a) Strip the outer insulating jacket from the conductor and use care so as not to
nick any of the strands.
b) Using a utility knife, gently strip the top layer of the aluminum conductors
Figure 3-37 Preparing Aluminum Conductors prior to connecting
c) After removing the oxidized layer immediately apply neutral grease (Noalox
or an acid- and alkali-free Vaseline) and connect the cable immediately to the
terminal. Perform these steps on one cable at a time. If the process is stopped
or delayed before applying the grease, and continue later- the conductor must
be scraped again. It takes roughly 30-60 seconds for an oxidized layer to form
on top of the conductors.
52
3.3.4 Communication Connection
CPS
SCA50KTL-DO/US-480
and
SCA60KTL-DO/US-480
inverters
support industry standard Modbus RS485 communication.
Communication board description
ON
S1
OFF
L1
L2
L3
OFF
ON
ON
S1
S1
OFF
1.
N
AC Output:Use 90¡ãC wire, either 3~2/0AWG copper or
2~2/0AWG aluminum, torque 110 in-lbs.
AC Ground:Use 90¡ãC copper wire, 6-4AWG for internal
grounding bar or external grounding stud, torque 50 in-lbs.
1
2 3
4
Figure 3-38(a) Communication Board of Standard wirebox
53
PE
3+
SPD
2+
1+
L1
L2
L3
N
AC Output:Use 90¡ãC wire, either 3~2/0AWG copper or
2~2/0AWG aluminum, torque 110 in-lbs.
AC Ground:Use 90¡ãC copper wire, 6~4AWG for internal
grounding bar or external grounding nut, torque 50 in-lbs.
OFF
ON
OFF
1
2 3
ON
S1
S1
4
Figure 3-38(b) Communication Board of H4 Connectors wirebox
2.
Connectors and communication cards
Table 3-10 Communication Connection Interfaces
Item
Picture
Configuration description
1 -----12V+
①
RS485
(Debug only)
2 -----12VGND
3 -----RS485+
4 -----RS4855 -----COM
②
RS485 port
(5pin connector)
1 -----12V+
2 -----12VGND
3 -----RS485+
4 -----RS4855 -----COM
54
③ USB port
Firmware upgrade via USB disk
S200
④ Selector
1-----Enable the termination resistance
switch for setting
2-----Disable the termination resistor
the 120Ω terminal
resistor of the
RS485
communication
S1
② RS485 communication cable connection:
Choose the RS485 communication cables according to the following table:
Table 3-11 Cables specifications
Cable
RS485
UTP CAT-5e or 3x#22~18AWG communication cable
communication
(e.g. Belden 3106A)
55
GND
RS485-
RS485+
GND
RS485-
RS485+
RS485 2
2
RS485 1
ON
OFF
RS485 1
1
S1
ON
OFF
S1
Figure 3-39(a) RS485 Connection of Standard wirebox
1. Cable connection of RS485 communication: 5 pin connector
2. Cable connection of RS485 network communication: 5 pin connector
It is recommended that industrial grade RS485 cable be used in lieu of
unshielded twisted pair. Communication cable such as (CAT5) or Belden
3106A cable for RS485 5 pin connector is preferred.
56
RS485 network connection:
When the inverters are monitored via the RS485 communication, a unique RS485
address for each inverter can be set up through the LCD interface. Up to 32 inverters
can be connected together in the RS485 communication network. The daisy-chain
topology is recommended for the RS485 network connection, as shown in Figure
3-33. Other communication topologies, such as the star networks, are not
recommended.
1
2
N
Datalogger
S402
OFF
S402
OFF
S402
ON
Figure 3-40 RS485 Network Connection
If there are multiple inverters in the RS485 network, the selector switch S1 of the last
inverter in the daisy-chain should be in ON position, to have the 120ohm terminal
resistor enabled.
The selector switch S1 of all other inverters should be in the OFF
position to disable the terminal resistor.
57
It is important to daisy chain the inverter RS485 connections to minimize noise
and bus reflections.
All RS485 connections must be terminated in a serial
fashion and not to exceed 32 in total.
Warning: Risk of Electric Shock.
Make sure all DC and AC power to the unit has been disconnected before
opening the inverter wiring box and ensure that hazardous high voltage
and power inside the equipment has been discharged. Wait at least 5
minutes before opening the wiring box.
1. Open the inverter wiring box.
2. Bring the communication cables into the wiring box through the provided
knockout holes at the bottom.
3. Connect the RS485 wires to the green Phoenix connector ensuring correct
polarity and using a shielded twisted pair cable.
4. If the inverter is the last Modbus device in the daisy chain, make sure the
Modbus termination switch S1 is in the ON position enabling Modbus
termination. Do not turn the switch to the ON position in any other inverters of
the daisy chain.
58
S1 - Selector switch for
the 120Ω RS-485
termination resistor
On - Enable the Modbus
(RS-485) bus termination
(Applies only for the last
inverter in the daisy chain)
Off - Disable the Modbus
(RS-485) bus termination.
(Factory default)
ON
OFF
S1
Figure 3-41. The Modbus (RS485) Termination Switch (S1) Location and Settings
on the LCD/Communication Board.
59
Chapter 4 Commissioning
WARNING:
Please follow the guidelines below before on-grid operation to
eliminate possible dangers to ensure safety.
4.1 Commissioning Checklist
4.1.1 Mechanical Installation
Make sure that the mounting bracket is secure and all the screws have been
tightened to the specified torque values.
(Please refer to 3.2 Mechanical installation)
4.1.2 Cable Connections
 Make sure that all cables are connected to the right terminals.
 The appropriate cable management is important to avoid physical damage.
 The polarity of DC input cables must be correct and the DC Switch should
be in the “OFF” position.
(Please refer to 3.3 Electrical installation)
4.1.3 Electrical Check
 Make sure that the AC circuit breaker is appropriately sized.
 Test whether the AC voltage is within the normal operating range.
 Make sure the DC open circuit voltage of input strings is less than 1000V.
60
4.2 Commissioning Steps
Complete the checklist above before commissioning the inverter as follows:
1.) Turn on the AC circuit breaker.
2.) Turn on the DC circuit breaker.
(Skip these two steps if there are no circuit breakers.)
3.) Switch the DC Switch to the “ON” position. When the energy supplied by
the PV array is sufficient, the LCD screen of inverter will light up. The inverter
will then start up with the message “sys checking”.
When the inverter completes “sys checking”, the LCD will show the
screen as Figure 4-1 below. Press the ENT key to access the menu for
selecting the grid standard, as shown in Figure 4-2.
Chint Power System
Initialization
Figure 4-1 System Checking Logo
61
4.) Set up the grid standard:
INSTRUCTION:
Please check with your local electricity supply company before
selecting a grid standard. If the inverter is operated with a wrong grid
standard, the electricity supply company may cancel the
interconnection agreement.
Placing the inverter into operation before the overall system complies
with the national rules and safety regulations of the application is not
permitted.
Grid Connection Rule
IEEE1547
Rule-21
HECO-HM
HECO-ML
Figure 4-2 Set up Grid Standard
(5) Choose PV Input working mode : The working mode of the DC input
connection and MPP Tracker may only be configured for Independent.
PV Input Mode
Independent
Figure 4-3 Independent mode setting
62
(6.) Neutral Line Setting : Setting the neutral line connect or not as Figure 4-4:
Neutral Line Setting
Yes
No
Figure 4-4 Setting the Neutral Line
(7.) Choosing the communication data below to the Figure 4-5:
Communication Setting
Baud rate:
9600
Address:
0001
Figure 4-5 Communication Setting
63
(8.) Time Setting as shown in Figure 4-6:
Time setting
Date:
2016–05 - 21
Time:
12 :21 :03
Figure 4-6 Time Setting
64
(9.) When the LCD screen shows the normal operation status (Figure 4-7) and
the “RUN” light on the LED panel is illuminated, this is an indication that the
grid connection and power generation are successful.
E-T:0.0kWh
E-D:0.0kWh
kWh
60
45
30
15
3
6
PV1:0.0V
9
12
15
18
21
24h
0.0A
Standby Addr:001
2015-10-22 12:00:00
Figure 4-7 Normal Operation Status
REMARK : The Running status cycle displays include: NoErr (Error
information), Pdc(kW), Udc(V), Idc(A), Pac(kW) and Q(kvar).
(10.) If the inverter fails to operate normally, the “FAULT” light will illuminate
and the fault information will show on the LCD screen as shown in the Figure
4-8.
Current Error
Date
Time
Error
2015/10/22 12:20:08
ArcboardErr
2015/10/22 12:20:08
Fault0040
2015/10/22 12:20:08
2015/10/22 12:20:08
Fault0040
Fault0040
2015/10/22 12:20:08
Fault0040
P1/1
Figure 4-8 Fault Information Interface
65
Chapter 5 User Interface
5.1 Description of LCD Panel
The inverter’s LCD panel consists of the LCD screen, four LED status
indicator lights, a buzzer, and four user keys, as shown in Figure 5-1.
POWER
RUN
GRID
FAULT
Figure 5-1 LCD Panel
The LCD panel includes a screen-saver function to increase the service
life of the display.
If there is no user activity or operation (key press) for
greater than 1 minute, the display will enter the screen-saving mode in order to
protect the screen and prolong the service life.
During normal inverter operation, a key press or any warnings or system
faults that may occur will cause the LCD to exit screen-saver mode.
66
Interpretation for the indicator lights is shown in Table 5-1 and function of
the keys is shown in Table 5-2.
Table 5-1 LED Indication
LED light
Name
Status
Light
Working
POWER
on
Light
off
Light
Grid-tied
on
operation
RUN
Flash
indication
light
Light
off
Light
Grid
status
indication
light
on
Flash
Light
off
Light
on
FAULT
Energized (control panel starts to
work)
power
light
GRID
Indication
Power supply not working
In grid-tied power generation state
Derated running status (light up 0.5s,
light off 1.6s)
In other operation status or power
supply not working
Grid is normal
Grid fault (light up 0.5s, light off 1.6s)
Power supply not working
Indicates a Fault
Fault
Slow
Indicates Alarm (light up 0.5s, light off
status
flash
2s)
indication
Fast
Protective action (light up 0.5s, light
light
flash
off 0.5s)
Light
off
No fault or power supply not working
67
Table 5-2 Definition of the Keys
Key
Description
Escape key
Definition of function
Back/end/mute
Enter key
Confirm entering the menu/confirm set
value/Switch to parameter setting
mode
Up
Page up in selection menu/+1 when
setting parameters
Down
Page down in selection menu/-1 when
setting parameters
5.2 Operation State
Table 5-1 indicates the definitions of LED, i.e. indicates the information of
the inverter’s operation state. It indicates that the system is energized and
under DSP control when “POWER” lights up.
The “RUN” LED will illuminate when the inverter detects that the grid
connection conditions meet the requirements and power is being fed into the
grid. The “RUN” LED will blink if the grid is in a de-rated running state while
feeding power into the grid.
The “GRID” LED will illuminate when the grid is normal during inverter
operation. Otherwise, the “GRID” LED will continue to blink until the grid
restores to normal.
The “FAULT” LED will blink quickly as a fault (except grid fault) occurs.
The “FAULT” LED will stay illuminated until the fault is eliminated. The LED will
blink slowly when an alarm occurs. The “FAULT” LED remains illuminated
when an internal fault occurs.
The buzzer will give an alarm if a fault (involving power grid fault) occurs.
68
5.3 Interface Types
Users can perform the corresponding operations with the 4 function keys
according to the indications of the LCD display.
The LCD screen will display different interfaces based on the operation
modes of the inverter. There are three operation modes: Logo interface mode
(as shown in Figure 5-2), Normal operation mode as shown in Figure 5-3,
and Fault mode (as shown in Figure 5-4).
The default indication interface indicates PV voltage, PV current, Grid
voltage, instant power, daily generated power and time information under
normal operation.
The fault information of the most recent or current fault will be indicated on
the LCD screen when the inverter is in fault mode.
(1)
The LCD interface starts with the company logo once the system
is energized, as shown in Figure 5-2.
Figure 5-2 LOGO Interface
69
(2) Indication of inverter operation mode:
E-T:0.0kWh
E-D:0.0kWh
kWh
60
45
30
15
3
6
PV1:0.0V
9
12
15
18
21
24h
0.0A
Standby Addr:001
2015-10-22 12:00:00
Figure 5-3 Default Display Interface for Normal Operation
History Record
Current Error
Running Record
Fault Record
Figure 5-4 History Record Interface
70
5.4 Main Menu
LCD screen displays “default indication interface” when the inverter is in
operation mode. Press ESC in this interface to escape the default interface
and Press ENT to access the main operation interface. The main operation
interface is shown in Figure 5-5.
Main Menu
Measurement Data
Setting
Power On/Off
History Record
Device Information
Figure 5-5 Main Menus on the LCD Screen
The main menu of LCD screen has 5 menus, i.e. “1 Measurement Data”,
“2 Setting” , “3 Power ON/OFF”, “4 History Record”, and “5 Device
Information”. The users may select options with
and
, and then
press the ENT key to confirm the selection. The users can return to the default
indication interface by pressing the ESC key.
71
5.4.1 Operation Information
When the cursor moves to “Measurement Data” in the main screen,
pressing the ENT key selects the operation information as shown in Figure 5-8.
Check the information by pressing
and
. Return to the previous
menu by pressing the ESC key.
PV Information
Independent
PV Input Mode
PdcTotal(kW)
0.0
PV2
PV3
Vdc(V)
0.0
0.0
0.0
Idc(A)
0.0
0.0
0.0
PV1
P1/4
AC Output
L1-N
L2-N
L3-N
0.0
0.0
0.0
I(A)
0.0
0.0
0.0
F(Hz)
0.0
0.0
0.0
V(V)
Main Menu
Measurement Data
Pac(Kw)
0.0
P Ref
100.0%
PF Ref
1.000
Setting
Power On/Off
History Record
P2/4
Device Information
Energy
E-Today(kWh)
0.0
E-Month(kWh)
0.0
E-Total(kWh)
0.0
P3/4
Others
Heatsink Temp(℃)
-37.0
Ambient Temp(℃)
-49.9
Grid Connection Rule
IEEE1547
Power Derating
P4/4
Figure 5-6 Operation Information
72
5.4.2 Setting
Move the cursor to “Setting” in the main interface. Press the ENT key to
be prompted for the password: “1111” as shown in Figure 5-7. Enter the
password number by pressing
and
, selecting the numeral, and
pressing the ENT key to input and proceed to the next digit of the password
number. Once all four digits are entered, press the ENT key to confirm the
password or Press the ESC key to go back to Setting.
.
Setting
Please enter Password:
1 1 1 1
Figure 5-7 Input Password Number
73
Press ENT to confirm, and set the current system parameters, as shown
in Figure 5-8. There are 8 submenus in “Parameters Setting”: “1 System
Parameters”, “2 Control Command”, “3 Protection Parameters”, “4 L/HVRT
Setup”,“5 Power Derating Setting”, “6 Reactive Power Derating Setup”,“7
ARC Parameters”, and “8 Other Parameters”.
Setting
Setting
Others Parameters
System Parameters
Control Command
Protection Parameters
LVRT/HVRT Setup
Power Derating Setup
Reactive Power Derating Setup
ARC Parameters
P1/2
P2/2
Figure 5-8 System Setup Menu and Submenus Overview
5.4.2.1 System Parameters
(1) “Language Setting” Two languages, i.e. Chinese and English are
available in “ Language” menu.
Language setting
ENGLISH
Figure 5-9 Language Setting
74
(2) “Grid Rule”: There are multiple grid standards available. Press
and
, and select the corresponding grid standard and press the ENT key.
Grid Connection Rule
IEEE1547
Rule-21
HECO-HM
HECO-ML
Figure 5-10 Setting Grid Rule
INSTRUCTION:
Please check with your local electricity supply company before
selecting a grid standard. If the inverter is operated with a wrong grid
standard,
the
electricity
supply
company
may
cancel
the
interconnection agreement.
Placing the inverter into operation before the overall system complies
with the national rules and safety regulations of the application is not
permitted..
75
(3) “PV Input Mode”: This allows the user to read the inverter working
mode as “Independent” mode
(4) “Neutral Line Setting”: Check the neutral line be connected or not.
(5) “Com Setting”: This interface is used to set the address and baud rate
for communication.
(6) “Time”: Move the cursor to the “Time” menu to set the system time.
Press “
” or “
” to select the numerical value, then press “ENT” to go to
next option. e.g.: Year to Month. Finally Press the “ENT” key to confirm the
setting.
(7) “LCD Contrast Setting”: Setting the LCD contrast grade.
5.4.2.2 “Control Command”
There are 8 submenus in the “Control Command” menu:
1 “Restart” menu: If a fault shutdown happens, a severe fault may have
occurred inside the inverter. The user can perform a force reboot for one time
in this menu if the user needs to restart the inverter.
INSTRUCTION:
This function is effective only when the faults “IntFault0010~0150” in
the troubleshooting table occur. The inverter may restore to normal
operation automatically if alarm or protection faults occur. This
function will not respond when the inverter is in operation mode and a
“FaultOperated” alarm interface will be indicated.
2 “Factory Default” menu: The manufacturer’s parameter default values
can be restored when the inverter is not in operation mode. Otherwise “Fault
Operated” will be reported.
76
3 “Auto Test” menu is only used by authorized CPS personnel.
4 “MPPT Scan” menu: “MPPTScan” is used to execute the MPPT
scanning manually. Move the cursor to this item, and press the ENT key to
initiate the scanning. The LCD screen will skip to normal operation interface if
the MPPT scanning succeeds, or remain on the “MPPTScan menu” interface if
the scanning fails.
MPPT scan function is used for multi-MPP tracking, and is useful if the PV
panels are partially shadowed or installed with different angles. The factory
default setting for "MPPTScan" is set to <Enabled, yet can also be set to
Disabled. When the MPPT scan function is enabled, the scan period is every
60 minutes. The inverter will scan the maximum power point in the MPPT
range, according to the following condition:
While in independent mode (3 MPPTs), the input power must be lower
than 75% of the rated power for each MPPT tracker.
Once this MPPT scan function is activated on LCD, it will search the
maximum power point at a voltage step of 5V in the MPPT range for full load,
and retrieve the maximum power point.
5. “ARC Detect” In the “Parameters Setting””Control Command” menu,
execute the “ARC Detect”, the inverter will cease operation and will perform an
ARC Detect check.
Arcing check and protection is mainly divided into two parts, the Arcing
check board is responsible for whether there is Arcing in line, and transfer
Arcing protection signal to the DSP in the dominating control board. The
control board DSP is responsible for the control of inverter off the grid after
receiving Arcing signal to ensure safety. The Arcing board failure will cause
‘arc board err’ shown on the LCD and it will not connect to the grid until the arc
board is OK. If there is Arcing fault, the LCD displays the fault which can only
be cleared manually.
77
6. “ARC Clear” is used to clear the ARC fault. Move the cursor to this
menu, and press ENT. The operation result will appear on the LCD, i.e.
“Succeed” or “Failed”.
7. “PID Check Enable” is used to enable/disable the PID Check function.
Press ENT and use UP and DOWN to enable/disable the Island PID Check
function, and press ENT to confirm the setting.
8. “CEI Frq Enable” is used to enable/disable the CEI frequency control
function.
78
5.4.2.3 Protect Parameters
This interface is used to display and set the Protect parameters of the AC
grid voltage, frequency and recovery, etc, as shown in Figure 5-10.
Grid Over Voltage Protection
Grid Under Voltage Protection
GridVolMax1
110.00%
VolMaxTripT1(S)
1.00
VolMinTripT1(S)
2.00
GridVolMax2
120.00%
GridVolMin2
60.00%
Enable
Enable
GridVolMin1
88.00%
Enable
Enable
VolMaxTripT2(S)
0.16
VolMinTripT2(S)
1.00
GridVolMax3
120.00%
GridVolMin3
45.00%
VolMaxTripT3(S)
0.16
VolMinTripT3(S)
0.16
Enable
Disable
P1/7
Grid Over Frequency Protection
P2/7
Grid Under Frequency Protection
60.5
GridFrqMax1(Hz)
GridFrqMin1(Hz)
59.5
Enable
Enable
2.00
FrqMaxTripT1(S)
62
GridFrqMax2(Hz)
Setting
System Parameters
Enable
GridMaxTripT2(S)
0.16
GridFrqMax3(Hz)
62
FrqMaxTripT3(S)
0.16
FrqMinTripT1(S)
2.00
GridFrqMin2(Hz)
57.0
GridMinTripT2(S)
0.16
GridFrqMin3(Hz)
57.0
FrqMinTripT3(S)
0.16
Enable
Disable
Control Command
Disable
Protection Parameters
LVRT/HVRT Setup
P3/7
Power Derating Setup
Grid Recovery
Reactive Power Derating Setup
P4/7
Voltage Moving Average
107.92%
VolMax
VolMin
90.00%
MaxTripT(S)
600.00
VolRecoveryT(S)
300.00
VolMin
88.00%
MinTripT(S)
600.00
VolMax
110.00%
Disable
ARC Parameters
P1/2
Disable
FrqMax(Hz)
60.3
FrqMin(Hz)
59.8
FrqRecoveryT(S)
300.00
P5/7
Grid Voltage Balance
10.00%
GridVolBalance
Disable
P7/7
Figure 5-10 Protection Parameters Setting
79
P6/7
Navigate to the parameters by pressing
and
select it, and change the parameter value by pressing
. Then press “ENT” to
and
then
press“ENT” to confirm the parameter setting. The LCD will display new
parameters if the setting is successful, otherwise the old parameters will
display on the LCD.
Table 5-2 The Protection Parameters (IEEE1547)
Grid Over Voltage Protection
Parameter name
GridVoltMax1
VoltMaxTripTime1(S)
GridVoltMax2
VoltMaxTripTime2(S)
GridVoltMax3
VoltMaxTripTime3(S)
Description
Setup range (lower limit,
default & upper limit)
Threshold value of Level 1
{100.00%, 110.00%,
Max. grid voltage
135.00%}
Threshold value of Level 1
Max. grid trip voltage
{0, 1.00, 655}
Threshold value of Level 2
{100.00%, 120.00%,
Max. grid voltage
135.00%}
Threshold value of Level 2
Max. grid trip voltage
Threshold value of Level 3
Max. grid voltage
Threshold value of Level 3
Max. grid trip voltage
80
{0, 0.16, 655}
{100.00%, 120.00%,
135.00%}
{0, 0.16, 655}
Table 5-2 The Protection Parameters (IEEE1547) cont'd
Grid Low Voltage Protection
Parameter name
GridVoltMin1
VoltMinTripTime1(S)
Description
VoltMinTripTime2(S)
GridVoltMin3
VoltMinTripTime3(S)
default & upper limit)
Threshold value of Level 1
{30.00%, 88.00%,
Min. grid voltage
100.00%}
Threshold value of Level 1
Min. grid trip voltage
GridVoltMin2
Setup range (lower limit,
{0, 2.0, 655}
Threshold value of Level 2
{30.00%, 60.00%,
Min. grid voltage
100.00%}
Threshold value of Level 2
Min. grid trip voltage
{0, 0.16, 655}
Threshold value of Level 3
{30.00%, 45.00%,
Min. grid voltage
100.00%}
Threshold value of Level 3
Min. grid trip voltage
81
{0, 1.2, 655}
Table 5-2 The Protection Parameters (IEEE1547) cont'd
Grid Low Frequency Protection
Parameter name
Description
Protection threshold value
GridFrqMin1
of Level 1 Min. grid
frequency
FrqMinTripT1(S)
Trip time of Level 1 Min. grid
frequency
Protection threshold value
GridFrqMin2
of Level 2 Min. grid
frequency
FrqMinTripT2(S)
Trip time of Level 2 Min. grid
frequency
Protection threshold value
GridFrqMin3
of Level 3 Min. grid
frequency
FrqMinTripT3(S)
Trip time of Level 3 Min. grid
frequency
82
Setup range (lower limit,
default & upper limit)
{90.00%, 99.17%,
100.00%}
{0, 2, 655}
{90.00%, 95.00%,
100.00%}
{0, 0.16, 655}
{90.00%, 95.00%,
100.00%}
{0, 0.16, 655}
Table 5-2 The Protection Parameters (IEEE1547) cont'd
Grid Over Frequency Protection
Parameter name
Description
Protection threshold value
GridFrqMax1
of Level 1 Max. grid
frequency
FrqMaxTripT1(S)
Trip time of Level 1 Max.
grid frequency
Protection threshold value
GridFrqMax2
of Level 2 Max. grid
frequency
FrqMaxTripT2(S)
Trip time of Level 2 Max.
grid frequency
Protection threshold value
GridFrqMax3
of Level 3 Max. grid
frequency
FrqMaxTripT3(S)
Trip time of Level 3 Max.
grid frequency
83
Setup range (lower limit,
default & upper limit)
{100.00%, 100.83%,
110.00%}
{0, 2, 655}
{100.00%, 103.33%,
110.00%}
{0, 0.16, 655}
{100.00%, 103.33%,
110.00%}
{0, 0.16, 655}
Table 5-2 The Protection Parameters (IEEE1547) cont'd
Grid Recovery
Parameter name
VolMax(V)
VolMin(V)
VolRecoveryT(S)
FrqMax(Hz)
FrqMin(Hz)
FrqRecoveryT(S)
Description
Setup range (lower limit,
default & upper limit)
Recovery Maxthresholdgrid
{80.00%, 107.92%,
voltage protection
135.00%}
Recovery Min threshold.
{20.00%, 90.08%,
grid voltage protection
100.00%}
Recovery time of grid
voltage protection
{0, 300, 655}
Recovery Max thresholdgrid
{90.00%, 100.50%,
Frequency protection
110.00%}
Recovery Min threshold.
{80.00%, 99.67%,
grid Frequency protection
100.00%}
Recovery time of grid
frequency protection
{0, 300, 655}
Grid Voltage Balance
Parameter name
GridVolBalance
Description
Threshold value of grid
voltage unbalance
84
Setup range (lower limit,
default & upper limit)
(0.01%,2.6%,10%)
5.4.2.4 “L/HVRT Parameters”
“L/HVRT” is used to set the LVRT and HVRT parameters. Move the cursor to
this item, and press the ENT key to set the parameters. Setting the parameters
as shown in Figure 5-11. The LVRT curve as shown in Figure 5-12 and HRVT
curve as shown in 5-13.
LVRT Curve
LVRT Curve
LVRT Curve
LVRTVol1
0.00%
LVRTVol4
45.00%
LVRTVol7
LVRTTime1
0.00
LVRTTime4
10.50
LVRTTime7
20.50
LVRTVol2
0.00%
LVRTVol5
65.00%
LVRTVol8
83.00%
LVRTTime2
1.20
LVRTTime5
10.50
LVRTTime8
20.50
LVRTVol3
45.00%
LVRTVol6
LVRTTime3
1.20
LVRTTime6
83.00%
65.00%
20.50
Setting
P1/7
System Parameters
P2/7
P3/7
Control Command
HVRT Curve
Protection Parameters
HVRTVol1
HVRT Curve
LVRT/HVRT Setup
124.00%
HVRTVol7
115.00%
0.00
HVRTTime4
12.50
HVRTTime7
12.50
125.00%
HVRTVol5
115.00%
HVRTVol8
115.00%
HVRTTime2
0.80
HVRTTime5
12.50
HVRTTime8
12.50
HVRTVol3
124.00%
HVRTVol6
115.00%
HVRTTime3
0.80
HVRTTime6
HVRTTime1
HVRTVol2
Power Derating Setup
Reactive Power Derating Setup
ARC Parameters
P1/2
HVRT Curve
HVRTVol4
125.00%
12.50
P4/7
P5/7
LVRT and HVRT Control
LVRTModeSetting
0
LVRTTripVolt
80.0%
LVRTPstReactiveI
150.0%
LVRTNegReactiveI
200.0%
HVRTModeSetting
0
HVRTTripVolt
110.0%
P7/7
Figure 5-11 L/HRVT Parameters Setting
85
P6/7
Voltage N*rated
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
7,8
5
6
Through
3
4
Trip
2
1
2 4 6 8 10 12 14 16 18 20 22
Time/S
Figure 5-12 The LVRT Curve
1.3
Voltage N*rated
1.25
1 2
3
4
1.2
1.15
Through
5,6,7,8
Trip
1.1
1.05
1
2 4 6 8 10 12 14 16 18 20 22
Figure 5-13 The HVRT Curve
86
Time/S
Table 5-3 LVRT and HVRT Parameters
LVRT
Parameter name
Description
Threshold value of Low
LVRTVolt (1,2)
voltage ride through(first or
second point)
LVRTTime(1,2)
{0, 1.2, 655}
voltage ride through(third or
through(third or fourth point)
{0, 10.5, 655}
voltage ride through(fifth or
{0%, 65%, 100%}
{0%, 65%, 100%}
Time of Level Low voltage ride
{0, 10.5, 655}
through(fifth or sixth point))
{0, 20.5, 655}
voltage ride through(seventh
or eighth point)
Time of Level Low voltage ride
LVRTTime(7,8)
{0%, 45%, 100%}
{0,1.2, 655}
Threshold value of Low
LVRTVolt (7,8)
{0%, 45%, 100%}
Time of Level Low voltage ride
sixth point)
LVRTTime(5,6)
{0%, 0%, 100%}
through( first or second point)
Threshold value of Low
LVRTVolt (5,6)
{0%, 0%, 100%}
{0, 0, 655}
fourth point)
LVRTTime(3,4)
default & upper limit)
Time of Level Low voltage ride
Threshold value of Low
LVRTVolt (3,4)
Setup range (lower limit,
through(seventh or eighth
point)
87
{0%, 83%, 100%}
{0%, 83%, 100%}
{0, 20.5, 655}
{0, 20.5, 655}
HVRT
Threshold value of high
HVRTVolt(1,2)
voltage ride through(first or
second point)
HVRTTime (1,2)
{0, 0, 655}
through(t first or second point)
{0, 0.8, 655}
voltage ride through(third or
fourth point)
HVRTTime (3,4)
through(third or fourth point)
{0, 12.5, 655}
voltage ride through(fifth or
{100%, 115%, 135%}
{0, 12.5, 655}
through(fifth or sixth point))
{0, 12.5, 655}
voltage ride through(seventh
or eighth point)
Time of Level high voltage ride
HVRTTime(7,8)
{100%, 115%, 135%}
Time of Level high voltage ride
Threshold value of high
HVRTVolt (7,8)
{100%, 124%, 135%}
{0, 0.8, 655}
sixth point)
HVRTTime(5,6)
{100%, 124%, 135%}
Time of Level high voltage ride
Threshold value of high
HVRTVolt (5,6)
{100%, 125%, 135%}
Time of Level high voltage ride
Threshold value of high
HVRTVolt(3,4)
{100%, 125%, 135%}
through(seventh or eighth
point)
88
{100%, 115%, 135%}
{100%, 115%, 135%}
{0, 12.5, 655}
{0, 12.5, 655}
LHVRT Control
LVRTTripVol
LVRTPstReactive1
LVRTNegReactive1
HVRTTripVol
Threshold value of LOW
voltage trip
ThefactorLVRT Positive
Reactive Current
The factor LVRT Negative
Reactive Current
Threshold value of HIGH
voltage trip
89
(70.0%,80.0%,100.0%)
(0.0%,150.0%,300.0%)
(70.0%,200.0%,100%)
(100.0%,110.0%,135.0%)
5.4.2.5“Power Derating Setup”
“Power Derating Setup” menu is used to set the active power derating
parameters including Active Power Derating, Over frequency derating, Low
frequency derating and High temperature frequency derating, etc. The
parameters are shown in Table 5-3.
Power vs Friquency
OvrFrqMin(Hz)
60.4
OvrFrqMax(Hz)
61.4
OvrFrqSlop(Pn/s)
0.16%
RecovryFrq(Hz)
60.0
OvrFrqRecoveryT(S)
60
OvrFrqDeratingMode
0
P2/3
Active Power Derating
Setting
System Parameters
Control Command
CtrMode
0
Percentage
100.0%
Protection Parameters
LVRT/HVRT Setup
Power Derating Setup
Reactive Power Derating Setup
ARC Parameters
P3/3
P1/2
Power vs Voltage
OvrVoltTrip
110.00
%
OvrVolSlop(Pn/s)
0.0%
OvrVolFilterT(s)
60
Disable
P1/3
Figure 5-14 Power Derating Setup
90
Table 5-3 Power Derating Setup
Voltage-Watt Over
Parameter name
Description
Threshold value of grid over
OvrVoltTrip
voltage derating
OvrVoltRecovery
Threshold value of grid over
voltage derating recovery
Setup range (lower limit,
default & upper limit)
{100%,110%,135%}
{100%,100.5%,110%}
Slop of grid over voltage
OvrVoltSlop
{0,0,1}
derating
OvrVoltFilterT(s)
Recovery time of grid over
{1,60,90}
voltage derating
Table 5-3 Power Derating Setup cont'd
Grid Over Frequency Derating
Parameter name
Description
Setup range (lower limit,
default & upper limit)
Min Threshold value of grid
OvrFrqMin(Hz)
over
{60,60.2,72}
Frequencyderatingstarted
OvrFrqMax(Hz)
OvrFrqSlop
RecoveryFrq(Hz)
OvrFrqRecoveryT(s)
Max Threshold value of grid
over Frequencyderating over
Slop of grid over
Frequencyderating
Recovery value of grid over
Frequencyderating
Recovery time of grid over
Frequencyderating
91
{60,61.4,72}
{0,0.16%,1}
{58.8,60,66}
{0,60,655}
5.4.2.5 “Reactive Parameters”
“Reactive Power Derating Parameters” menu is used to set the Grid reactive
power derating parameters including PF parameters and Qu parameters, etc.
The parameters as shown in Table 5-4
Note: The PF and Q value can be adjusted by remote software if the “Remote”
is selected.
PF vs Voltage
Reactive Power vs Grid Voltage
pFSetValue
1.000
QuCurveU1
pFCurveP1
50.0%
QuCurveQ1
107.99%
0.0%
pFCurvepF1
1.000
QuCurveU2
110.00%
Setting
pFCurveP2
100.0%
QuCurveQ2
-50.0%
System Parameters
pFCurvepF2
-0.900
QuCurveU1i
92.01%
pFCurveTriVolt
100.00%
pFCurveUndoVolt
90.00%
Control Command
Protection Parameters
LVRT/HVRT Setup
QuCurveQ1i
0.0%
QuCurveU2i
90.00%
P1/4
P2/4
Power Derating Setup
Reactive Power vs Grid Voltage
Reactive Power Derating Setup
Grid Reactive Power Derating
QuCurveQ2i
50.0%
CtrMode
QuCurveTriPower
20.0%
Percentage
QuCurveUndoPower
5.0%
ARC Parameters
P1/2
P3/4
0
0.0%
P4/4
Figure 5-15 Reactive Derating Setting
(1). PF Set:Set the PF value
Note: Change the reactive power by adjusting the Power Factor
(2). PF(P) Curve:PF curve mode
Note: The power factor changes according to the power change, as shown in
Figure 5-16:
INSTRUCTION:
The PF (P) Curve function is only available for IEEE-1547 grid
standards.
92
PF
(PFCurveP1,PFCurvePF1)
Inductive
1
(P%)
-1
Capacitive
(PFCurveP2,PFCurvePF2)
Figure 5-16 PF(P) Curve Mode
93
(3). Q(U) Curve:Q(U) curve mode
Note: The reactive compensation changes according to the grid voltage
change, as shown in Figure 5-17.
INSTRUCTION:
The Q(U) curve function is only available for IEEE-1547 grid
standards.
Q(%)
(QuCurveU2i,QuCurveQ2i)
Inductive
+
_
(QuCurveU1,
QuCurveQ1)
(QuCurveU1i,
QuCurveQ1i)
Capacitive
(QuCurveU2,QuCurveQ2)
Figure 5-17 Q(U) Curve Mode
94
U(V)
Table 5-4 lists the parameters of PF Set, PF(P) Curve and Q(U) Curve
modes. Press ENT to start up the modes after the parameters are set up.
Table 5-4 Parameters of reactive power control (IEEE-1547)
Grid Reactive Power Derating
Parameter name
Parameter name
Setup range (lower limit,
default & upper limit)
Setup range (lower limit,
default & upper limit)
Description
Description
pFSetValue
{-0.8,-1},{1},{0.8,1}
Figure 5-16
pFCurveP1(%)
{0,50%,100%}
Figure 5-16
pFCurvepF1
{-0.8,-1},{1},{0.8,1}
Figure 5-16
pFCurveP2(%)
{0,100%,100%}
Figure 5-16
pFCurvepF2
{-0.8,-1},{-0.9},{0.8,1}
Figure 5-16
pFCurveTriVol(V)
{100%,100%,110%}
PF curve trip voltage
pFCurveUndoVol(V)
{90%,90%,100%}
PF curve revocation
voltage
QuCurveU1(V)
{100%,107.99%,110%}
Figure 5-17
QuCurveQ1(%)
{-100%,0,100%}
Figure 5-17
QuCurveU2(V)
{108%,110%,110%}
Figure 5-17
QuCurveQ2
{-100%,50%,100%}
Figure 5-17
QuCurveU1i(V)
{90%,92%,95%}
Figure 5-17
QuCurveQ1i
{-100%,0,100%}
Figure 5-17
QuCurveU2i(V)
{80%,90%,92%}
Figure 5-17
QuCurveQ2i
{-100%,-50%,100%}
Figure 5-17
QuCurveTriPower
{5%,20%,100%}
Qu curve trip power
95
5.4.2.7“Arc Parameters”
“ARC Parameters” is used to enable/disable the ARC function and set the ARC
parameters.
ARC Bandwith Setting
ARC Bandwith Setting
Bandwidth1
10K
Bandwidth2
StartFrq1
20K
StartFrq2
50K
Proportion1
25
Proportion2
25
Filter1
10K
20%
Filter2
20%
System Parameters
Threshold1(dB)
455
Threshold2(dB)
420
Control Command
SigPerApdLimit1(dB)
65
SigPerApdLimit2(dB)
60
Setting
Protection Parameters
LVRT/HVRT Setup
P1/4
Power Derating Setup
ARC Percentage Setting
Reactive Power Derating Setup
ARC Parameters
P1/2
P2/4
ARC Others Parameters
PctStartFrq1
30K
PctStartFrq2
0K
PctStartBW1
5K
PctStartBW2
TestPeriod
7
ARCParaGro
up
0
ARCEnble
Enble
0K
Roughness1
60%
Roughness2
0%
EffectivePeriod
6
P3/4
P4/4
Figure 5-18 Arc Parameters Setting
5.4.2.8“Other Parameters”
“Other Parameters” is used to set the other parameters including MPPT scan
period, nominal derating step and GFCI, DCI parameters. Press ENT and use UP
and DOWN to set parameters and enable/disable the function, and press ENT to
confirm the setting. The parameters as shown in Figure 5-13 and Table 5-5
Others
Setting
Others Parameters
Others
PowerOnDelay(s)
5
PVSlowStartSlope
10.00%
ErrSoftStartP
0.16%
NormSoftStopP
6.00%
NormSoftStartP
4.00%
NormalDeratingStep
6.00%
Disable
Others
FaultPowerT(C)
95.0
Islang Protect
Enable
FaultEnvT(C)
83.0
Fan Detect
Enable
Enable
P1/5
Others
GFCIStaticValue(mA)
GFCIStaticT(s)
P2/5
Others
250
Enable
0.2
GFCIDynProFactor
100.0%
DCIProtection1
0.50%
Enable
PVStarupVolt(V)
330
MPPTScanPeriod(s)
3600
Enable
Enable
ISOProtection
140K
StartUPMinTemp(C)
-30.0
DuplicationGroup
0%
CtrParaGroup
4
PID Check Setting
0
P2/2
DCIProtectionT1(s)
Enable
10.00
DCIProtection2(mA)
950
DCIProtectionT2(s)
1.00
Disable
P3/5
P4/5
Figure 5-19 Other Parameters Setting
96
P5/5
5.4.2.9 “File Export”
“File Export” is used to export the data including “Running History” and “Fault
Record”. Press ENT and use UP and DOWN to export the data, and press
ENT to confirm the setting. The parameters as shown in Figure 5-13.
5.4.2.10 “Firmware update”
“File Export" is to update the versions of firmware include “LCD Firmware” and
“DPS Firmware”. Press ENT and use UP and DOWN to update the data, and
press ENT to confirm the setting as shown in Figure 5-13.
5.4.3 Power ON/OFF
Manual Turn ON/OFF: Manual Power ON/OFF is required after
regulation setting or manual (fault) shut-down. Press ESC or ENT to Main
Menu, then Press ENT and go to submenu “Power ON/OFF”. Then move the
cursor to “ON” and press ENT to start the inverter, the inverter will start up and
operate normally if the start-up condition is met. Otherwise, the inverter will go
to stand-by mode.
Normally, it is not necessary to Turn OFF the inverter, but it can be shut
down manually if regulation setting or maintenance is required.
Move the cursor from the main operation interface to “Setting”. Press ENT
and go to submenu “Power ON/OFF”. Move the cursor to “OFF” and press
ENT, and then the inverter will be shut down.
Automatic Turn ON/OFF: The inverter will start up automatically when
the output voltage and power of PV arrays meet the set value, AC power grid
is normal, and the ambient temperature is within allowable operating range.
The inverter will be shut down automatically when the output voltage and
power of PV modules are lower than the set value, or AC power grid fails; or
the ambient temperature exceeds the normal range.
97
5.4.4 History
Move the cursor to “4 History” in the main interface. Press ENT to check
the history information, as shown in Figure 5-20. There are 2 submenus in the
“2 History” menu: “Running History” and “Fault Record”.
(1) The error log can store up 100 running history messages in “Running
History” menu.
(2) The last record can store up 100 fault record in “Fault Record” menu.
Current Error
Date
Time
Error
2015/10/22 12:20:08
ArcboardErr
2015/10/22 12:20:08
Fault0040
2015/10/22 12:20:08
2015/10/22 12:20:08
Fault0040
Fault0040
2015/10/22 12:20:08
Fault0040
History Record
P1/1
Current Error
Running Record
Running Record
Num
Fault Record
001
15/10/22
12:20:08
Fault
002
15/10/22
12:20:08
Standby
003
15/10/22
12:20:08
On-grid
004
15/10/22
12:20:08
Standby
005
15/10/22
12:20:08
Off-grid
006
15/10/22
12:20:08
SysStart
Date
Time
Event
P1/1
Fault Record
Num
001
Date
15/10/22
Time
Action
12:20:08
ON
ArcboardErr
Error
002
15/10/22
12:20:08
ON
Fault0040
003
15/10/22
12:20:08
ON
Fault0040
004
15/10/22
12:20:08
ON
Fault0040
005
15/10/22
12:20:08
ON
Fault0040
P1/1
Figure 5-20 History Menu and Submenu
98
5.4.5 Device Information
Move the cursor from the main operation interface “Main Menu” Press ENT
and go to submenu “Device Information” and press ENT to check the device
information as shown in Figure 5-15.
Inverter information
Device Model: SCA60KTL-DO/US480
Device SN: 0 0000 0000 0000
Main Menu
DSP Ver:
01.00 0x505A
LCD Ver:
01.00
DSP Bootloader Ver: 01.00
Measurement Data
LCD Bootloader Ver: 01.00
Setting
MiniMCU Ver: 01.00
Power On/Off
P1/2
History Record
Device Information
Data Logger Information
Data Logger SN
IP
0 0000 0000 0000
0.0.0.0
Subnet Mask
Gateway
DNS Server
0.0.0.0
0.0.0.0
0.0.0.0
Address Range
P2/2
Figure 5-15 Device Information
99
Chapter 6 Operation
6.1 Start-Up
Manual Turn ON/OFF: Manual Power ON/OFF is required after
regulation setting or manual (fault) shut-down. Press ESC to Main Menu , then
Press ENT and go to submenu “Power ON/OFF”. Then move the cursor to
“ON” and press ENT to start the inverter. Then the inverter will start up and
operate normally if the start-up condition is met. Otherwise, the inverter will go
to stand-by mode.
Automatic start-up: The inverter will start up automatically when the
output voltage and power of PV arrays meet the set value, AC power grid is
normal, and the ambient temperature is within allowable operating range.
Normally, it is not necessary to Turn OFF the inverter, but it can be shut
down manually if regulation setting or maintenance is required.
6.2 Shut-Down
Manual shutdown: Normally, it is not necessary to shutdown the inverter,
but it can be shut down manually if regulation setting or maintenance is
required.
Press ESC to the Main Menu and move the cursor the submenu “Power
ON/OFF” Press ENT and Move the cursor to “OFF” and press ENT, and then
the inverter will be shut down.
Automatic shutdown: The inverter will be shut down automatically when
the output voltage and power of PV modules are lower than the set value, or
AC power grid fails; or the ambient temperature exceeds the normal range.
100
6.3 Operation Mode
There are 4 operation modes. The following are corresponding indications
for each mode.
(1) System check and Logo mode for start up, as shown in Figure 6-1:
Chint Power System
Initialization
Figure 6-1 System Self Check Ongoing
This mode indicates that the inverter is checking whether it is ready for
normal operation after the manual start-up of inverter.
(2) Normal operation mode: Default indication interface for normal
operation is shown in Figure 6-2.
E-T:0.0kWh
E-D:0.0kWh
kWh
60
45
30
15
3
6
PV1:0.0V
9
12
15
18
21
24h
0.0A
Standby Addr:001
2015-10-22 12:00:00
Figure 6-2 Default Indication Interface for Normal Operation
In Normal Operation mode, the inverter converts the power generated by PV
modules to AC continuously and feeds into the power grid.
101
(3) Standby mode, as shown in Figure 6-3:
The inverter will enter standby mode when the output voltage and power
of PV modules do not meet the startup conditions or PV voltage and input
power are lower than the set value. The inverter will check automatically
whether it meets the startup conditions in this mode until it turns back to
normal mode. The inverter will switch from standby mode to fault mode if a
malfunction occurs.
E-T:0.0kWh
E-D:0.0kWh
kWh
60
45
30
15
3
6
PV1:0.0V
9
12
15
18
21
24h
0.0A
Standby Addr:001
2015-10-22 12:00:00
Figure 6-3 Inverter System in Standby Mode
(4) Fault mode, as shown in Figure 6-4:
The inverter will disconnect from the power grid and turn into fault mode
when the inverter or power grid fails. Check the specific cause in
“Troubleshooting table” (Table 7-2) according to the fault message displayed
on the LCD and eliminate the fault referring to the instructions.
Current Error
Date
Time
Error
2015/10/22 12:20:08
ArcboardErr
2015/10/22 12:20:08
Fault0040
2015/10/22 12:20:08
2015/10/22 12:20:08
Fault0040
Fault0040
2015/10/22 12:20:08
Fault0040
P1/1
Figure 6-4 Fault Indication Interface
102
WARNING:
All the installation and wiring connections should be performed by
qualified technical personnel. Disconnect the inverter from PV
modules and the AC supply before undertaking maintenance.
Do not operate or maintain the inverter until at least 5 minutes after
disconnecting all sources of DC and AC.
6.4 Grid-tied Power Generation
The CPS SCA50KTL-DO/US-480 and SCA60KTL-DO/US-480 series
inverters have an automatic grid-tied power generation process. It will check
constantly whether AC power grid meets the conditions for grid-tied power
generation, and also test whether the PV array has adequate energy. After all
conditions are met, the inverter will enter grid-tied power generation mode.
While in grid-tied power generation, the inverter can detect the power grid at
all times, and also keep the photovoltaic array output in maximum power point
tracking (MPPT) mode. In case of any abnormity, the inverter will enter the
protection program immediately. In low light conditions when power generation
is not enough to keep the inverter in operation, the inverter will enter standby
mode. When the voltage of PV array changes and becomes stable and higher
than the required start value, the inverter will attempt to start grid-tied power
generation again.
103
Chapter 7 Maintenance and De-installation
7.1 Fault Shutdown and Troubleshooting
7.1.1 LED Fault and Troubleshooting
Please refer to the definition of LED lights in Table 5-1 and troubleshoot
according to Table 7-1:
Table 7-1 Troubleshooting of LED Lights
LED fault status
Solutions
Neither the “Power” LED nor the
1. Turn off the external AC
LCD screen lights up.
breaker
2. Switch the DC switch to “OFF”
position
3. Check the PV input voltage and
polarity
The “GRID” LED is blinking.
1. Turn off the external AC
breaker
2. Switch the DC switch to “OFF”
position
3. Check whether the grid voltage
is normal and whether the cable
connection of AC side is correct
and secure
The “RUN” LED lights off or “FAULT”
LED lights up.
Refer
to
Table
troubleshooting
104
7-2
for
7.1.2 LCD Fault and Troubleshooting
The inverter will be shut down automatically if the PV power generation
system fails, such as output short circuit, grid overvoltage / undervoltage, grid
overfrequency / underfrequency, high environmental temperature or internal
malfunction of the machine. The fault information will be displayed on the
LCD screen. Please refer to “5.4.2 Present fault” for detailed operation.
The causes of a fault can be identified based on the faults listed in Table
7-2. Proper analysis is recommended before contacting after-sales service.
There are 3 types of fault: alarm, protection and hardware fault.
Table 7-2 LCD Troubleshooting
Definition:
Prompt detection of abnormal temperature
Possible causes:
1.Temperature Sensor socket connecter has poor
Alarm
1.TempSensorErr
contact;
2.Temperature Sensor is damaged;
Recommended solutions:
1.Observe temperature display;
2.Switch off 3-phase working power supply and
then reboot the system;
3.Contact after-sales service personnel
105
Table 7-2 LCD Troubleshooting cont'd
Definition:
Communication inside inverter fails
Possible causes:
Terminal
2.CommErr
block
connecters
of
internal
communication wires have poor contact
Recommended solutions:
1.Observe for 5 minutes and see whether the alarm
will be eliminated automatically;
2.Switch off 3-phase working power supply and
then reboot the system;
3.Contact after-sales service personnel
Alarm
Definition:
Cooling fan failure by visual check
Possible causes:
1.Fan is blocked;
2.Fan service life has expired;
3. Fan socket connecter has poor contact.
3.ExtFanErr
Recommended solutions:
1.Observe for 5 minutes and see whether the alarm
will be eliminated automatically;
2.Check for foreign objects on fan blades;
3.Switch off 3-phase work power supply and then
reboot the system;
4.Contact after-sales service personnel
106
Table 7-2 LCD Troubleshooting cont'd
Definition:
Internal alarm
Possible causes:
Alarm
4.EepromErr
Internal memory has a problem
Recommended solutions:
1.Observe for 5 minutes and see whether the alarm
will be eliminated automatically;
2.Contact after-sales service personnel
Definition:
Ambient or internal temperature is too high
Possible causes:
1.Ambient temperature outside the inverter is too
high;
2.Fan is blocked;
3. Convection airflow is insufficient due to improper
installation.
Protection
1.TempOver
Recommended solutions:
1.Confirm that external ambient temperature is
within the specified range of operating temperature;
2.Check whether air inlet is blocked;
3.Check whether fan is blocked;
4.Check whether the location of installation is
appropriate or not;
5.Observe for 30 minutes and see whether the
alarm will be eliminated automatically;
6.Contact after-sales service personnel
107
Table 7-2 LCD Troubleshooting cont'd
Definition:
Grid voltage exceeds the specified range,
Possible causes:
1.Grid voltage is abnormal;
Power grid breaks down
2.Cable connection between the inverter and the
grid is poor;
Protection
2.GridV.OutLim
Recommended solutions:
1.Observe for 10 minutes and see whether the
alarm will be eliminated automatically;
2.Check whether the grid voltage is within the
specified range;
3.Check whether the cable between the inverter
and power grid is disconnected or has any fault;
4.Contact after-sales service personnel
108
Table 7-2 LCD Troubleshooting cont'd
Definition:
Grid voltage frequency is abnormal, or power grid is
not detected
Possible causes:
1.Grid frequency is abnormal;
2.Cable connection between the inverter and the
grid is poor;
3.GridF.OutLim
Recommended solutions:
1.Observe for 10 minutes and see whether the
alarm will be eliminated automatically;
2.Check whether the grid frequency is within the
specified range;
3.Check whether the cable between the inverter
and power grid is disconnected or has any fault;
Protection
4.Contact after-sales service personnel
Definition:
PV voltage exceeds the specified value
Possible causes:
PV over-voltage
Recommended solutions:
4.PVVoltOver*
1.Observe for 30 minutes and see whether the
alarm will be eliminated automatically;
2.Check whether PV voltage exceeds the specified
range;
3.Turn off the PV input switch, wait for 5 minutes,
and then turn on the switch again;
4.Contact after-sales service personnel
109
Table 7-2 LCD Troubleshooting cont'd
Definition:
PV module is connected inversely
Possible causes:
PV positive pole and negative pole are connected
5.PV1 (2) Reverse** inversely;
Recommended solutions:
1.Check whether positive pole and negative pole
are connected inversely;
2.Contact after-sales service personnel
Definition:
System leakage current is too high
Protection
Possible causes:
1.Excessive parasitic capacitance on PV module
due to environmental factor;
2.Grounding is abnormal;
6.GFCI.Err
3. Internal inverter fault
Recommended solutions:
1.Observe for 10 minutes and see whether the
alarm will be eliminated automatically;
2.Detect whether the electrical connection is
abnormal
3.Contact after-sales service personnel
110
Table 7-2 LCD Troubleshooting cont'd
Definition:
Insulation impedance of PV positive to ground or
PV negative to ground exceeds the specified range
Possible causes:
7.IsolationErr
Air humidity is high
Recommended solutions:
1.Observe for 10 minutes and see whether the
alarm will be eliminated automatically;
2.Check insulation of PV system;
3.Contact after-sales service personnel
Protection
Definition:
ARC fault
Possible causes:
Protection actions of ARC board
8.ARC Protect
Recommended solutions:
1. Use “ARCFaultClear” to clear the ARC fault.
(Refer to section 5.4.4)
2. Check if there is an arc in PV input or the
connection of PV cable is not good.
2. Contact after-sales service personnel
111
Table 7-2 LCD Troubleshooting cont'd
Definition:
Arc board error
Possible causes:
Poor contact or damage of Arc board
9.Arcboard Err
Recommended solutions:
1. Check whether the Arc board is in good
condition
2. Use “ARCFaultClear” to clear the ARC fault.
(Refer to section 5.4.4)
Protection
3. Contact after-sales service personnel
Definition:
Internal protection of the inverter
Possible causes:
10.IntProtect0010~ Protection procedure occurs inside the inverter
0620
Recommended solutions:
1.Observe for 10 minutes and see whether the
alarm will be eliminated automatically;
2.Contact after-sales service personnel
112
Table 7-2 LCD Troubleshooting cont'd
Definition:
Internal fault of the inverter
Possible causes:
Fault occurs inside the inverter
Fault
IntFault0010~0150
Recommended solutions:
1.The inverter can be forced to restart once if it
is required by operation and if it is confirmed
that there is no other problem;
2.Contact after-sales service personnel
INSTRUCTION:
The
actual
display
of
“PV.VoltOver”
is
“PV1VoltOver”
or
display
of
“PV.Reverse”
is
“PV1Reverse”
or
“PV2VoltOver”.
The
actual
“PV2Reverse”.
DANGER:
Please disconnect the inverter from AC grid and PV modules before
opening the equipment. Make sure hazardous high voltage and
energy inside the equipment has been discharged.
Do not operate or maintain the inverter until at least 5 minutes after
disconnecting all sources of DC and AC.
113
7.2 Product Maintenance
7.2.1 Check Electrical Connections
Check all the cable connections as a regular maintenance inspection
every 6 months or once a year.
1.) Check the cable connections. If loose, please tighten all the cables
referring to “3.3 Electrical installation”.
2.) Check for cable damage, especially whether the cable surface is
scratched or smooth. Repair or replace the cables if necessary.
7.2.2 Clean the Air Vent Filter
The inverter can become hot during normal operation. It uses built in
cooling fans to provide sufficient air flow to help in heat dissipation.
Check the air vent regularly to make sure it is not blocked and clean the
vent with soft brush or vacuum cleaner if necessary.
7.2.3 Replace the Cooling Fans
If the internal temperature of the inverter is too high or abnormal noise is
heard assuming the air vent is not blocked and is clean, it may be necessary
to replace the external fans. Please refer to Figure 7-1 for replacing the
cooling fans.
1. Use a No.2 Phillips head screwdriver to take off the 10 screws on the fan
tray (6 screws on the upper fan tray, and 4 screws on the lower fan tray).
2. Disconnect the waterproof cable connector from the cooling fan.
3. Use a No.2 Phillips head screwdriver to remove the screws.
4. Attached the new cooling fans on the fan tray, and fasten the cable on the
fan tray with cable ties
Torque value: 0.8-1N.m (7.1-8.91in-lbs)
5. Install the assembled fans back to the inverter.
Torque value: 1.2N.m (10.6in-lbs)
114
1
2
3
5
4
Figure 7-1 Replace cooling fans
115
7.2.4 Replace the Inverter
Please confirm the following things before replacing the inverter:
(1) The AC breaker of inverter is turned off.
(2) The DC switch of the inverter is turned off..
Then Replace the inverter according to the following steps:
a.) Unlock the padlock if it is installed on the inverter.
Figure 7-2 Unlock the padlock
b.) Use a No.3 Phillips head screwdriver to unscrew the 2 screws on both
sides of the inverter.
Figure 7-3 Remove the screws on both sides
c.) Use a No. 10 Hex wrench to remove the 4 screws between the main
116
housing and the wiring box. Lift up the main inverter enclosure and
disconnect from the wiring box.
Figure 7-4 Disconnect the main housing from the wiring box
d.) Use a No.2 Phillips head screwdriver to remove the 2 screws on the left
side of the wiring box, and take off the cover. Put the cover on the connector
of wiring box. Torque value: 1.6N.m (14.2in-lbs)
Figure 7-5 Install the cover on the connector of the wiring box
7.3 De-installing the Inverter
De-install the inverter according to the following steps when the service
time is due or for other reasons:
117
DANGER:
Please disconnect the electrical connection in strict accordance with
the following steps. Otherwise, the inverter will be damaged and the
service personnel’s life will be endangered.
1.) Turn off the AC breaker, and use Padlocks if provided.
2.) Turn off the DC breaker, and use Padlocks if provided.
(Skip the two steps if there are no circuit breakers.)
3.) Switch the AC switch to “OFF” position.
4.) Switch the DC switch to “OFF” position.
5.) Wait for 10 minutes to ensure the internal capacitors have been
completely discharged.
6.) Measure the AC output cable terminal voltage against the ground, and
make sure the voltage is 0V.
7.) Disconnect the AC and PE cables referring to “3.3.2 AC and ground
connection”.
8.) Disconnect the DC cables referring to “3.3.1 DC connection”.
9.) De-install the inverter using reverse of installation steps referring to “3.2
Mechanical installation”
118
Chapter 8 Technical Data
Model Name
CPS
SCA50KTL-DO/US-480
CPS
SCA60KTL-DO/US-480
75kW (25kW per MPPT)
90kW (30kW per MPPT)
51.5kW
61.5
DC Input
Max. PV Power
Nominal DC Input Power
Max. DC Input Voltage
Operating DC Input Voltage
Range
Start-up DC Input Voltage /
Power
Number of MPP Trackers
MPPT Voltage Range
Operating Current (Imp)
Max.PV Short-Circuit Current
(Isc x 1.25)
Number of DC Inputs
1000Vdc
200-950Vdc
330V / 80W
3
480-850Vdc
540-850Vdc
108A (36A per MPPT)
114A (38A per MPPT)
180A (60A per MPPT)
15 inputs, 5 per MPPT
DC Disconnection Type
Load rated DC switch
AC Output
Rated AC Output Power
50kW
60kW
Max. AC Output Power
50kVA
60kVA
Rated Output Voltage
Output Voltage Range
480Vac
1
422-528Vac
3Φ/PE/N
Grid Connection Type
Nominal AC Output Current
@480Vac
Rated Output Frequency
62.2A
72.2A
60Hz
Output Frequency Range1
57-63Hz
Power Factor
>0.99 (±0.8 adjustable)
Current THD
<3%
AC Disconnection Type
Load rated AC switch
1) The "Output Voltage Range" and "Output Frequency Range" may differ according to the specific grid standard.
119
System
Topology
Max. Efficiency
CEC Efficiency
Stand-by / Night
Consumption
Environment
Enclosure Protection Degree
Cooling Method
Operating Temperature
Range
Non-Operating Temperature
Range2
Operating Humidity
Operating Altitude
Audible Noise Emmision
Display and Communication
User Interface and Display
Inverter Monitoring
Site Level Monitoring
Transformerless
98.8%
98.5%
<30W / <1W
NEMA 4X
Variable speed cooling fans
-22°F to +140°F / - 30°C to +60°C
(derating from +113°F / +45°C)
No low temp minimum to +158°F / +70°C maximum
0-95%, non-condensing
13123.4ft / 4000m (derating from 9842.5ft / 3000m)
<60dB @ 1m and 25°C
LCD + LED
Modbus RS485 and TCP / IP
CPS Flex Gateway (1 per 32 inverters)
Modbus Data Mapping
Remote Diagnostics / FW
Upgrade Functions
Mechanical Data
Dimensions (WxHxD)
Weight
Mounting / Installation Angle3
AC Termination
DC Termination
Fused String Inputs
(5 per MPPT)
SunSpec / CPS
Standard
600×1000×260mm
Inverter:123.5lbs/56kg; Wirebox:33lbs/15kg
0 to 90 degrees from horizontal
(vertical, angled, or lay flat)
M8 Stud Type Terminal Block
(Wire range: #4 - 2/0AWG CU/AL)
Screw Clamp Fuse Holder
(Wire range: #14 - #6AWG CU), Optional H4 (Amphenol)
15A standard fuse value (20, 25, 30A acceptable)
Safety
PV Arc-Fault Circuit
Protection
Safety and EMC Standard
Grid Standard and SRD
Smart-Grid Features
4
Type 1
UL1741-2010, UL1741SA-20164, UL1699B, CSA-C22.2
NO.107.1-01, IEEE1547; FCC PART15
IEEE1547-2003, Rule 214 and HECO/Rule144
Voltage-RideThru, Frequency-RideThru, Soft-Start, Volt-Var,
Frequency-Watt, Volt-Watt
2) See Chapter 3.1 for further requirements regarding non-operating conditions.
3) See Chapter 3.2 for Shade Cover accessory requirement for installation angles of 30 degrees or less.
4) Certification Pending.
120
Note 1: When the DC input voltage is lower than 480/540V or higher than 850V, the
inverter output power (Pn) will begin to derate, as shown in Figure 8-1 and 8-2:
PInx/PInn
110%
100%
80%
0.8%/V
60%
40%
37%
20%
540
100 200
300
400 500
600
850
950 1000
PV Voltage (V)
Figure 8-1 CPS SCA60KTL derating curve of PV input voltage
PInx/PInn
110%
100%
80%
0.8%/V
60%
40%
37%
20%
480
100 200
300
400 500
600
850
950 1000
PV Voltage (V)
Figure 8-2 CPS SCA50KTL derating curve of PV input voltage
121
Note 2: When the ambient temperature is higher than 113℉ (45℃), the inverter
output power (Pn) will begin to derate, as shown in Figure 8-3:
Pin/Pn
100%
-3%/℃
80%
60%
40%
20%
45
60
Tamb(℃)
Figure 8-3 SCA50/60KTL Derating Curve with High Temperature
Note 3: When the altitude is higher than 9842.5ft (3000m), the rated output
power (Pn) of the inverter will decrease, as shown in Figure 8-4:
Pin/Pn
100%
-30%/km
70%
3000
4000
Altitude(m)
Figure 8-4 SCA50/60KTL Derating Curve with High Altitude
122
Note 4: When the grid voltage is within 100%~110% (Un ~ 1.1*Un) of the
Rated Ouput Voltage, the inverter output power (Pn) may reach 100%. When
the grid voltage is lower than the Rated Ouput Voltage, the inverter will limit the
AC Output Current and the output power (Pn) will begin to derate, as shown in
Figure 8-5.
Po/Pn
100%
80%
60%
40%
20%
0.88*Un
Un
1.1*Un
Grid Voltage (Vac)
Figure 8-5 SCA50/60KTL Derating Curve of Grid Voltage
123
Chapter 9 Limited Warranty
The warranty policy of this product is specified in the contract; otherwise,
the standard warranty is 10 years.
For service, Chint Power Systems America will provide local support. For
Warranty terms, please refer to the CPS America standard warranty policy in
place at time of purchase.
124
CHINT POWER SYSTEMS AMERICA CO., LTD.
Address: 700 International Parkway, Suite 102
Richardson, Texas 75081
Service Hotline: 855-584-7168
Email: AmericaSales@chintpower.com
Website: www.chintpowersystem.com
SHANGHAI CHINT POWER SYSTEMS CO., LTD.
Headquarters: Building 4, No. 3255, Sixian Road,
Songjiang District, Shanghai, China
Tele: +86 -21 -3779 1222 -6300
Fax: +86 -21 -3779 1222 -6001
Part No: 9.0020.0334 A0
This manual is subject to change without prior notification. Copyright is
reserved. Duplication of any part of this issue is prohibited without written
permission.
125
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising