Devel XPT Series User manual
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XPT Series
Pure Sine Wave Inverter
For All Home & Office Appliances
User’s Manual
Version 1.0
Utility + Inverter + Charger + Transfer SW + Solar Power + AGS
All in One
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Table of Contents
1. Important Safety Information ........................................................................................................................ 3
1-1. General Safety Precautions ......................................................................................................................... 3
1-2. Precautions When Working with Batteries ................................................................................................ 3
2. Introduction .................................................................................................................................................... 5
2.1. General Information .................................................................................................................................... 5
2.2. Application .................................................................................................................................................. 5
2.3. Features ....................................................................................................................................................... 6
2.4 Electrical Performance ................................................................................................................................. 6
2.4.1 Inverter ............................................................................................................................................... 7
2.4.2 AC Charger ........................................................................................................................................ 7
2.4.3 Transfer .............................................................................................................................................. 9
2.4.4 Auto frequency adjust ........................................................................................................................ 9
2.4.5 Solar Charger ................................................................................................................................... 10
2.4.6 Automatic Voltage Regulation ........................................................................................................ 11
2.4.7 Power Saver ..................................................................................................................................... 12
2.4.8 Protections ........................................................................................................................................ 14
2.4.9 Remote control ................................................................................................................................. 14
2.4.10 LED Indicator & LCD ................................................................................................................... 15
2.4.11 Audible Alarm ............................................................................................................................... 16
2.4.12 FAN Operation............................................................................................................................... 16
2.4.13 DIP Switches .................................................................................................................................. 17
2.4.14 Output Socket................................................................................................................................. 17
2.4.15 Other features ................................................................................................................................. 18
3 Installation..................................................................................................................................................... 19
3.1 Location .............................................................................................................................................. 19
3.2 DC Wiring recommendation ............................................................................................................... 19
3.3 AC Wiring ........................................................................................................................................... 19
4 Troubleshooting Guide ................................................................................................................................. 21
5 Warranty ....................................................................................................................................................... 24
6 Order Information ......................................................................................................................................... 28
Appendix 1 ....................................................................................................................................................... 26
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1. Important Safety Information
WARNING!
This manual contains important instructions for all XPT Inverter/Charger models that shall be followed during installation and maintenance of the inverter.
1‐1. General Safety Precautions
1. Before installing and using the XPT Inverter/Charger, read all instructions and cautionary markings on the
XPT Inverter /Charger and all appropriate sections of this guide. Be sure to read all instructions and cautionary markings for any equipment attached to this unit.
2. This unit is designed for indoor use only. Do not expose the XPT Inverter/Charger to rain, snow, or spray.
3. To reduce risk of fire hazard, do not cover or obstruct the ventilation openings. Do not install the XPT
Inverter/Charger in a zero-clearance compartment. Overheating may result.
4. Use only attachments recommended or sold by the manufacturer. Doing otherwise may result in a risk of fire, electric shock, or injury to persons.
5. To avoid a risk of fire and electric shock, make sure that existing wiring is in good condition and that wire is not undersized. Do not operate the XPT Inverter/Charger with damaged or substandard wiring.
6. Do not operate the XPT Inverter/Charger if it has received a sharp blow, been dropped, or otherwise damaged in any way. If the XPT Inverter/Charger is damaged, see the Warranty section.
7. Do not disassemble the Inverter/Charger. It contains no user-serviceable parts. See Warranty for instructions on obtaining service. Attempting to service the XPT Inverter/Charger yourself may result in a risk of electrical shock or fire. Internal capacitors remain charged after all power is disconnected.
8. The XPT Inverter contains more than one live circuit (batteries and AC line). Power may be present at more than one source. To reduce the risk of electrical shock, disconnect both AC and DC power from the
XPT Inverter/Charger before attempting any maintenance or cleaning or working on any circuits connected to the XPT Inverter/Charger. Turning off controls will not reduce this risk.
9. Use insulated tools to reduce the chance of short-circuits when installing or working with the inverter, the batteries, or PV array.
1‐2. Precautions When Working with Batteries
1. Make sure the area around the battery is well ventilated.
2. Never smoke or allow a spark or flame near the engine or batteries.
3. Use caution to reduce the risk or dropping a metal tool on the battery. It could spark or short circuit the battery or other electrical parts and could cause an explosion.
4. Remove all metal items, like rings, brace lets, and watches when working with lead-acid batteries.
Lead-acid batteries produce a short circuit current high enough to weld metal to skin, causing a severe burn.
5. Have someone within range of your voice or close enough to come to your aid when you work near a lead-acid battery.
6. Have plenty of fresh water and soap near by in case battery acid contacts skin, clothing, or eyes.
7. Wear complete eye protection and clothing protection. Avoid touching your eyes while working near
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batteries.
8. If battery acid contacts skin or clot hing, wash immediately with soap and water. If acid enters your eye, immediately flood it with running cold water for at least twenty minutes and get medical attention immediately.
9. If you need to remove a battery, always remove the grounded terminal from the battery first. Make sure all accessories are off so you don’t cause a spark.
10. Always use identical types of batteries.
11. Never install old or untested batteries. Check each battery’s date code or label to ensure age and type.
12. Batteries are temperature sensitive. For optimum performance, the should be installed in a stable temperature environment.
13. Always recycle old batteries. Contact your local recycling center for proper disposal information.
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2. Introduction
2-1. General Information
Thank you for purchasing the XPT Series Inverter/Charger.
XPT Series Pure Sine Wave Inverter is a combination of an inverter, charger, solar power and Auto-transfer switch into one complete system . It is packed with unique features and it is one of the most advanced inverter/chargers in the market today.
The inverter features an AC pass-through circuit, powering your home appliances from utility or generator power while charging the battery. When utility power fails, the battery backup system keeps your appliances powered until utility power is restored. Internal protection circuits prevent over-discharge of the batteries by shutting down the inverter when a low battery condition occurs. When utility or generator power is restored, the inverter transfers to the AC source and recharges the batteries.
Accessories allow the XPT series to also serve as a central hub of a renewable energy system. Set the XPT
Series inverter to battery priority mode, designates the inverter-preferred UPS configuration. In this configuration, the load power in normally provided by the inverter. However, if the inverter output is interrupted, an internal transfer switch automatically transfers the load from the inverter to commercial AC power. The transfer time between inverter and line is short(6ms typical), and such transfers are normally not detected by even highly sensitive loads. Upon restoration of inverter power, the inverter will transfer back to inverter power.
On the line priority mode, when utility AC power cuts off(or falls out of acceptable range), the transfer relay is de-energized and the load is automatically transferred to the Inverter output. Once the qualified AC utility is restored, the relay is energized and the load is automatically reconnected to AC utility.
It features power factor corrected, sophisticated multi-stage charging and pure sine wave output with unprecedentedly high surge capability to meet demanding power needs of inductive loads without endangering the equipment.
XPT Series Inverter is equipped with a powerful charger of up to 120Amp (depending on Model). The overload capacity is 300% of continuous output for up to 20 seconds to reliably support tools and equipment longer
Another important feature is that the inverter can be easily customized to Battery priority via a DIP switch, this helps to extract maximum power from battery in renewable energy systems. Thus, the XPT Series Pure
Sine Wave Inverter is suitable for Renewable energy system, Utility, RV, Marine and Emergency appliances.
To get the most out of the power inverter, it must be installed, used and maintained properly. Please read the instructions in this manual before installing and operating.
2-2. Application
Power tools–circular saws, drills, grinders, sanders, buffers, weed and hedge trimmers, air compressors.
Office equipment – computers, printers, monitors, facsimile machines, scanners.
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Household items – vacuum cleaners, fans, fluorescent and incandescent lights, shavers, sewing machines.
Kitchen appliances – coffee makers, blenders, ice markers, toasters.
Industrial equipment – metal halide lamp, high – pressure sodium lamp.
Home entertainment electronics – television, VCRs, video games, stereos, musical instruments, satellite equipment.
2.3 Features
Smart Remote Control (RMT)
Battery Temperature Sensor (BTS)
Automatic Generator Starting (AGS)
Support Solar Panel with MPPT Function
Designed to Operate under Harsh Environment
DC Start & Automatic Self-Diagnostic Function
Compatible with Both Linear & Non-Linear Load
Easy to Install & Easy to Operate & Easy to Solve
Low DC Voltage Supports Home & Office Appliances
Powerful Charge Rate Up to 120Amp, Selectable From 0%-100%
High Efficiency Design & “Power Saving Mode” to Conserve Energy
Battery Priority Mode, Designates the Inverter-Preferred UPS Configuration
13 Vdc Battery Recover Point, Dedicated for Renewable Energy Systems
8 pre Set Battery Type Selector plus De-sulphation for Totally Flat Batteries
4-step Intelligent Battery Charging, PFC (Power Factor Correction) for Charger
8 ms Typical Transfer Time Between Utility & Battery, Guarantees Power Continuity
15s Delay Before Transfer when AC Resumes, Protection for Load when Used with Generator
2.4 Electrical Performance
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2.4.1 Inverter
Topology
The XPT inverter/charger is built according to the following topology.
Inverter: Full Bridge Topology.
AC Charger: Isolate Boost Topology
Solar Charger: MPPT PV Controller
Because of high efficiency Mosfets and 16bit, 4.9MHz microprocessor and heavy transformers, it outputs
PURE SINE WAVE AC with an average THD of 10% (Min5%, Max 15%) depending of load connected and battery voltage.
The peak efficiency of XPT series is 88%.
Overload Capacity
The XPT series inverters have different overload capacities, making it ideal to handle demanding loads.
1 For 110%<Load<125%(±10%), no audible alarm in 14 minutes, beeps 0.5s every 1s in the 15th minute, and Fault(Turn off) after the 15th minute.
2 For 125%<Load<150%(±10%), beeps 0.5s every 1s and Fault(Turn off) after the 1 minute.
3 For 300%≧Load>150%(±10%), beeps 0.5s every 1s and Fault(Turn off) after 20s.
2.4.2 AC Charger
XPT Series is equipped with an active PFC (Power Factor Corrected) multistage battery charger. The PFC feature is used to control the amount of power used to charge the batteries in order to obtain a power factor as close as possible to 1.
Unlike other inverters whose max charging current decreases according to the input AC voltage, XPT series charger is able to output max current as long as input AC voltage is in the range of 164-243VAC
(95-127VAC for 120V model), and AC freq is in the range of 48-54Hz(58-64Hz for 60Hz model).
The XPT series inverter is with a strong charging current of 120Amp (for 4KW,12V), and the max charge current can be adjusted from 0%-100% via a liner switch at the right of the battery type selector. This will be helpful if you are using our powerful charger on a small capacity battery bank. Fortunately, the liner switch can effectively reduce the max charging current to 20% of its peak.
Choosing “0” in the battery type selector will disable charging function.
There are mainly 3 stages:
Bulk Charging: This is the initial stage of charging. While Bulk Charging, the charger supplies the battery with controlled constant current. The charger will remain in Bulk charge until the Absorption charge voltage
(determined by the Battery Type selection) is achieved.
Software timer will measure the time from A/C start until the battery charger reaches 0.3V below the boost voltage, then take this time asT0 and T0×2 = T1.
Absorb Charging: This is the second charging stage and begins after the absorb voltage has been reached.
Absorb Charging provides the batteries with a constant voltage and reduces the DC charging current in order to maintain the absorb voltage setting.
In this period, the inverter will start a T1 timer; the charger will keep the boost voltage in Boost CV mode until the T1 timer has run out. Then drop the voltage down to the float voltage. The timer has a minimum time of 1 hour and a maximum time of 12 hours.
Float Charging: The third charging stage occurs at the end of the Absorb Charging time. While Float charging, the charge voltage is reduced to the fl oat charge voltage (determined by the Battery Type selection*). In this stage, the batteries are kept fully charged and ready if needed by the inverter.
If the A/C is reconnected or the battery voltage drops below 12Vdc/24Vdc/48Vdc, the charger will reset the
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cycle above.
If the charge maintains the float state for 10 days, the charger will deliberately reset the cycle to protect the battery.
Table 2.5.1 Battery Charging Processes
Table 2.5.2 Battery Type Selector
SwitchSetting
6
7
8
4
5
2
3
0
1
Description
GelUSA
AGM1
LiFePO4
SealedLeadAcid
GelEURO
OpenLeadAcid
Calcium
De-sulphation
FastMode/VDC
ChargerOff
14.0
14.1
14.6
14.4
14.4
14.8
15.1
FloatMode/VDC
15.5(4HoursthenOff)
13.7
13.4
13.7
13.6
13.8
13.3
13.6
For12VdcModeSeries(*2for24VdcMode;*4for48VdcMode)
De-sulphation
The de-sulphation cycle on switch position 8 is marked in red because this is a very dangerous setting if you do not know what you are doing. Before ever attempting to use this cycle you must clearly understand what it does and when and how you would use it.
What causes sulphation? This can occur with infrequent use of the batteries(nor), or if the batteries have been left discharged so low that they will not accept a charge. This cycle is a very high voltage charge cycle designed to try to break down the sulphated crust that is preventing the plates taking a charge and thus allow the plates to clean up and so accept charge once again.
Charging depleted batteries
The XPT series inverter allows start up and through power with depleted batteries.
For 12VDC model, after the battery voltage goes below 10V, if the switch is still (and always) kept in "ON" position, the inverter is always connected with battery, and the battery voltage does not drop below 2V, the inverter will be able to charge the battery once qualified AC inputs are present.
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Before the battery voltage goes below 9VDC, the charging can be activated when the switch is turned to
“Off”, then to “ON”.
When the voltage goes below 9VDC, and you accidently turn the switch to OFF or disconnect the inverter from battery, the inverter will not be able to charge the battery once again, because the CPU loses memory during this process.
Tabel 2.5.3 AC Charging Current for XPT model
Model
Watt
Battery Voltage
AC Charger Current
Max
Model
Watt
Battery Voltage
AC Charger Current
Max
1.000
~
1.500
3.000
12Vdc
24Vdc
48Vdc
12Vdc
24Vdc
48Vdc
24Vdc
45 ± 5Amp
25 ± 5Amp
15 ± 5Amp
80 ± 5Amp
45 ± 5Amp
30 ± 5Amp
80 ± 5Amp
2.000
4.000
12Vdc
24Vdc
48Vdc
12Vdc
24Vdc
48Vdc
24Vdc
70 ± 5Amp
30 ± 5Amp
20 ± 5Amp
120 ± 5Amp
65 ± 5Amp
40 ± 5Amp
90 ± 5Amp
5.000 6.000
48Vdc
24Vdc
50 ± 5Amp
120 ± 5Amp
10.000
48Vdc
48Vdc
60 ± 5Amp
100 ± 5Amp
8.000
48Vdc 80 ± 5Amp
12.000
48Vdc 120 ± 5Amp
The charging capacity will go to peak in around 3 seconds. This may cause a generator to drop frequency, making inverter transfer to battery mode.
It is suggested to gradually put charging load on the generator by switching the charging switch from min to max, together with the 15s switch delay, our inverter gives the generator enough time to spin up. This will depend on the size of the generator and rate of charge.
2.4.3 Transfer
While in the Standby Mode, the AC input is continually monitored. Whenever AC power falls below the
VAC Trip voltage (154 VAC, default setting for 230VAC,90VAC for 120VAC), the inverter automatically transfers back to the Invert Mode with minimum interruption to your appliances - as long as the inverter is turned on. The transfer from Standby mode to Inverter mode occurs in approximately 8 milliseconds. And it is the same time from Inverter mode to Standby mode.
Though it is not designed as a computer UPS system, this transfer time is usually fast enough to keep your equipment powered up.
There is a 15-second delay from the time the inverter senses that continuously qualified AC is present at the input terminals to when the transfer is made. This delay is built in to provide time for a generator to spin-up to a stable voltage and avoid relay chattering. The inverter will not transfer to generator until it has locked onto the generator’s output. This delay is also designed to avoid frequent switching when input utility is unstable.
2.4.4 Auto frequency adjust
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The inverter is with Auto Frequency adjust function.
The factory default configuration for 220/230/240VAC inverter is 50Hz, and 60Hz for 100/110/120VAC inverter. While the output freq can be easily changed once a qualified freq is applied to the inverter.
If you want to get 60Hz from a 50Hz inverter, just input 60Hz power, and the inverter will automatically adjust the output freq to 60Hz and vice versa.
2.4.5 Solar Charger
Listed below is the spec for solar charger
Table 2.5.4 Solar Charge Electrical Specification @ 25℃
Rated Voltage
RatedChargeCurrent
InputVoltageRange
OverloadProtection(DCload)
TypicalIdleConsumption
BulkCharge
FloatingCharge
EqualizationCharge
OverChargeDisconnect
OverChargeRecovery
OverdDischargeDisconnect
OverDischargeReconnect
TemperatureCompensation
LeadAcidBatterySettings
NiCadBatterySettings
LowVoltageReconnect
LowVoltageDisconnect
AmbientTemperature
Altitude
ProtectionClass
BatteryTemperatureSensor①
12Vdc 24Vdc 48Vdc
14.6Vdc
13.4Vdc
14.0Vdc
14.8Vdc
13.6Vdc
10.8Vdc
12.3Vdc
-13.2mV/℃
30~120Amp
0~150Vdc
2.0*I(Rated)>5s;1.5*I(Rated)>20s
1.25*I(Rated)TemperatureControlled
Atidle<10mA
29.2Vdc
26.8Vdc
28.0Vdc
29.6Vdc
27.2Vdc
21.6Vdc
24.6Vdc
-26.4mV/℃
Adjustable
Adjustable
58.4Vdc
53.6Vdc
58.0Vdc
59.2Vdc
54.4Vdc
43.2Vdc
49.6Vdc
-52.8mV/℃
12.0-14.0Vdc
10.5-12.5Vdc
24.0-28.0Vdc
21.0-25.0Vdc
48.0-56.0Vdc
42.0-50.0Vdc
0-40℃ (Fullload) 40-60℃ (De-rating)
Operating5000m,Non-Operating16000m
IP21
BTS(Optional)
RemoteBatteryTemperatureSensor forIncreasedChargingPrecision
#8AWG TerminalSize(Fine/SingleWire)
NOTE:
according to the type of battery that is selected by user through battery type selector. With the battery temperature sensor installed, the controller will increase or decrease the battery charging voltage depending on the temperature of the battery to optimize the charge to the battery and maintain optional performance of the battery.
Maximum Power Point Tracking (MPPT) Function
Maximum Power Point Tracking, frequently referred to as MPPT, is an electronic system that operates the
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Photovoltaic (PV) modules in a manner that allows the modules to produce all the power they are capable of.
The PV-seeker Charge controller is a microprocessor-based system designed to implement the MPPT.
And it can increase charge current up to 30% or more compared to traditional charge controllers
(See Table 2.5.4).
Table 2.5.5 Current, Power Vs. Voltage Characteristics
The Charge controller built in is with 12/24/48V battery voltage auto detecting function.
For 12/24VDC inverter, the output voltage of solar charger will be accordingly 12/24VDC, and the qualified
DC input volt range is 15v-55VDC.
For 48VDC inverter, the output voltage of solar charger will be accordingly 48VDC, and the qualified DC input volt range is 55v-110VDC.
If the voltage falls out of this range, the charger will not work properly. Special attention should be paid to this when configuring the solar array.
2.4.6 Automatic Voltage Regulation(Optional)
The automatic voltage regulation function is for full series of XPTPure Sine Wave Inverter/ Charger except split phase models including XPT1000W~6000W.
Instead of simply bypassing the input AC to power the loads, the XPT-SV series inverter stabilizes the input
AC voltage to a range of 230V/120V±10%.
Connected with batteries, the XPTS Series inverter will function as a UPS with max transfer time of 10 ms.
With all the unique features our inverter provides, it will bring you long-term trouble free operation beyond your expectation.
Function Introduction
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Table 2.5.5 Input Voltage Transfer Points
XPTS-PV Function (Optional)
Acceptable Input Voltage Range (Vac)
Nominal Input Voltages (Vac)
(A)LinelowlossN/W(Onbattery)
(B)LineLowcomebackN/W(OnBoost)
(C)Line2ndboostthreshold(OnBoost)
(D)Line2ndboostcomeback(OnNormal)
(E)Line1stboostthreshold(OnBoost)
(F)Line1stboostcomeback(OnNormal)
(G)Linebuckcomeback(OnNormal)
(H)Linebuckthreshold(OnBuck)
(I)Linehighcomeback(OnBuck)
(J)Linehighloss(OnBattery)
2.4.7 Power Saver Mode
100
LV (NA/JPN)
0-160
110
75/65
80/70
**
**
90
93
106
110
115
120
84/72
89/77
**
**
99
103
118
121
127
132
XPTS-PV Series
120 220
HV (INTL)
0-300
230
92/78 168/143 176/150
97/83 178/153 186/160
**
**
**
**
**
**
108
112
128
132
139
144
198
205
235
242
253
263
207
215
246
253
266
276
240
183/156
193/166
**
**
216
225
256
264
278
288
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There are 3 different working status for XPT inverter: “Power Saver Auto” 、“Power Saver Off” and
“Power Off”.
When power switch is in “Unit Off” position, the inverter is powered off.
When power switch is turned to either of “Power Saver Auto” or “Power Saver Off”, the inverter is powered on.
Power saver function is designed to conserve battery power when AC power is not or rarely required by the loads.
In this mode, the inverter pulses the AC output looking for an AC load (i.e., electrical appliance). Whenever an AC load (greater than 25 watts) is turned on, the inverter recognizes the need for power and automatically starts inverting and output goes to full voltage. When there is no load (or less than 25 watts) detected, the inverter automatically goes back into search mode to minimize energy consumption from the battery bank.
In “Power saver on” mode, the inverter will draw power mainly in sensing moments, thus the idle consumption is significantly reduced.
The inverter is factory defaulted to detect load for 250ms every 30 seconds. This cycle can be customized to
3 seconds turn SW3 on the DIP switch.
Power saver on Power saver off Power saver on (Load detected)
Note: The minimum power of load to take inverter out of sleep mode (Power Saver On) is 25 Watts.
Table 2.5.6 XPT Series Idle Power Consumption
Model
Power Saver Off
Idle
Power Saver Auto
3Secs(Max) Stand-By Mode
1.000W
1.500W
2.000W
3.000W
4.000W
5.000W
6.000W
8.000W
10.000W
12.000W
15W
18W
30W
60W
70W
80W
90W
120W
150W
180W
7.5W
7.5W
11.5W
20.0W
20.0W
25.0W
25.0W
30.0W
35.0W
35.0W
6.6W
6.6W
6.6W
6.6W
6.6W
6.6W
6.6W
6.6W
6.6W
6.6W
When in the search sense mode, the green power LED will blink and the inverter will make a ticking sound.
At full output voltage, the green power LED will light steadily and the inverter will make a steady humming sound. When the inverter is used as an “uninterruptible” power supply the search sense mode or “Power
Saver On” function should be defeated.
Exceptions
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Some devices when scanned by the load sensor cannot be detected. Small fluorescent lights are the most common example. (Try altering the plug polarity by turning the plug over.) Some computers and sophisticated electronics have power supplies that do not present a load until line voltage is available. When this occurs, each unit waits for the other to begin. To drive these loads either a small companion load must be used to bring the inverter out of its search mode, or the inverter may be programmed to remain at full output voltage.
2.4.8 Protections
The XPT series inverter is equipped with extensive protections against various harsh situations/faults.
These protections include:
AC Input over voltage protection/AC Input low voltage protection
Low battery alarm/High battery alarm
Over temperature protection/Over load protection
Short Circuit protection (1s after fault)
Back feeding protection
When Over temperature /Over load occur, after the fault is cleared, the master switch has to be reset to restart the inverter.
The Low batter voltage trip point can be customized from defaulted value 10VDC to 10.5VDC thru the SW1 on DIP switch.
The inverter will go to Over temp protection when heat sink temp. ≥105ºC, and go to Fault (shutdown
Output) after 30 seconds. The switch has to be reset to activate the inverter.
The Global LF series Inverter has back feeding protection which avoids presenting an AC voltage on the AC input terminal in Invert mode.
After the reason for fault is cleared, the inverter has to be reset to start working.
2.4.9 Remote control
Apart from the switch panel on the front of the inverter, an extra switch panel connected to the RJ11 port at the DC side of the inverter thru a standard telephone cable can also control the operation of the inverter.
If an extra switch panel is connected to the inverter via “remote control port”, together with the panel on the inverter case, the two panels will be connected and operated in parallel.
Whichever first switches from “Off” to “Power saver off” or “Power saver on”, it will power the inverter on.
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If the commands from the two panels conflict, the inverter will accept command according to the following priority:
Power saver on> Power saver off> Power off
Only when both panels are turned to “Unit Off” position will the inverter be powered off.
The Max length of the cable is 10 meters.
WARNING
Never cut the telephone cable when the cable is attached to inverter and battery is connected to the inverter.
Even if the inverter is turned off. It will damage the remote PCB inside if the cable is short circuited during cutting.
2.4.10 LED Indicator & LCD
Table 2.5.7 XPT Series LED Indicators
LINEMODE
INVERTERMODE
FASTCHARGE
FLOATCHARGE
ALARMMODE
OVERTEMPTRIP
OVERLOADTRIP
POWERSAVERON
GREENLEDlitinACMode
GREENLEDlitinInverterMode
YELLOWLEDlitinFastChargingMode
GREENLEDlitinFloatChargingMode
REDLEDlitinErrorState
REDLEDlitinOverTemperature
REDLEDlitinOverLoad
GREENLEDlitinPowerSaverMode
Table 2.5.8 XPT Series LCD Indicator
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.4.11 Audible Alarm
Battery Voltage Low
Battery Voltage High
Invert Mode Over-Load
Over Temperature
Table 2.5.9 XPT Series Audible Alarm Spec
InvertergreenLEDlit,andthebuzzerbeeps0.5severy5s.
InvertergreenLEDlit,andthebuzzerbeeps0.5severy1sandFaultafter60s.
(1)110%<load<125%(±10%),Noaudiblealarmin14minutes,
Beeps0.5severy1sin15 th
minuteandFaultafter15minutes;
(2)125%<load<150%(±10%),Beeps0.5severy1sandFaultafter60s;
(3)Load>150%(±10%),Beeps0.5severy1sandFaultafter20s;
Heatsinktemp. ≥105ºC,OvertempredLEDLighting,beeps0.5severy1s;
2.4.12 FAN Operation
For 1-3KW, there is one multiple controlled DC fan which starts to work according to the following logic.
For 4-12KW, there is two multiple controlled DC fan and one AC fan. The DC fan will work in the same way as the one on 1-3KW, while the AC fan will work once there is AC output from the inverter.
So when the inverter is in power saver mode, the AC fan will work from time to time in response to the pulse sent by the inverter in power saver mode.
The Operation of the DC fan at the DC terminal side is controlled by the following logic
(Refer to Table 2.5.10):
Table 2.5.10 XPT Series Fan Operation Logic
Condition Enter condition
T ≤ 60℃
Leave condition
T>65℃
Speed
OFF
HEAT SINK
TEMPERATURE
65℃≤ T<85 ℃
T>85℃
T ≤ 60℃ /T ≥ 85℃
T ≤ 80℃
50%
100%
CHARGER
CURRENT
I ≤ 15%
20%<I ≤ 50%
I>50%
I ≥ 20%
I ≤ 15%/I ≥ 50%
I ≤ 40%
OFF
50%
100%
LOAD%
(INV MODE)
Load<30%
30% ≤ Load<50%
Load ≥ 30%
Load ≤ 20%/Load ≥ 50%
OFF
50%
Load ≥ 50% Load ≤ 40% 100%
Allow at least 30CM of clearance around the inverter for air flow. Make sure that the air can circulate freely around the unit.
Variable speed fan operation is required in invert and charge mode. This is to be implemented in such a way as to ensure high reliability and safe unit and component operating temperatures in an operating ambient temperature up to 50°C.
• Speed to be controlled in a smooth manner as a function of internal temperature and/or current.
• Fan should not start/stop suddenly.
• Fan should run at minimum speed needed to cool unit.
• Fan noise level target <60db at a distance of 1m.
- 16 -
2.4.13 DIP Switches
On the rear panel of inverter, there are 5 DIP switches which enable users to customize the performance of the device.
Table 2.5.11 XPT Series Dip Switch Function Setting
DIP Switch NO.
SW1
SW2
SW3
SW4
SW5
Switch Function Position: 0 Position: 1
10.0Vdc 10.5Vdc
LowBatteryTripVolt
*2for24Vdc,*4for48Vdc
230VacHV 184-253Vac/(176-276Vac) 154-253Vac/(150-276Vac)
ACInputRange/(AVR)
120VacLV 100-135Vac/(92-144Vac) 90-135Vac/(78-144Vac)
PowerSaverAutoSetting
O/PFrequencySetting
DetectLoadPer5Secs
50Hz
NightChargeFunction
60Hz
Solar/ACPrioritySetting UtilityPriority SolarPriority
SW1:Low Battery Trip Volt:
For 12VDC model, the Low Battery Trip Volt is set at 10.0Vdc by typical deep cycle lead acid battery. It can be customized to 10.5Vdc using SW1 for sealed car battery, this is to prevent batteries from over-discharging while there is only a small load applied on the inverter.(*2 for 24VDC, *4 for 48VDC)
SW2:AC Input Range:
There are different acceptable AC input ranges for different kinds of loads.
For some relatively sensitive electronic devices, a narrow input range of 184-253VAC (100-135V for
120VAC model) is required to protect them.
While for some resistive loads which work in a wide voltage range, the input AC range can be customized to
154-253VAC (90-135V for 120VAC model), this helps to power loads with the most AC input power without frequent switches to the battery bank.
Power Saver Auto Setting :
The inverter is factory defaulted to detect load for 250ms in every 5 seconds. This cycle can be customized to 3 seconds thru the SW3 on the DIP switch.
Solar/AC Priority:
Our inverter is designed with AC priority by default. This means, when AC input is present, the battery will be charged first, and the inverter will transfer the input AC to power the load. Only when the AC input is stable for a continuous period of 15 days, the inverter will start a battery inverting cycle to protect the battery. After 1 cycle normal charging and ac through put will be restored.
The AC Priority and Battery Priority switch is SW4. When you choose battery priority, the inverter will inverting from battery despite the AC input. Only when the battery voltage is reaches low voltage alarm point(10.5V for 12V), the inverter transfers to AC Input, charges battery, and switches back to battery when battery is charged full. This function is mainly for wind/solar systems taking utility power as back up.
2.4.14 Output Socket
- 17 -
The inverter is either equipped with a dual GFCI socket (rated at 30Amps) or an universal socket (rated at
10Amps) for more convenient wiring.
2.4.15 Other features
Battery voltage recover start
After low battery voltage shut off (10V for 12V model/20V for 24V model/40V for 48V model), the inverter is able to restore operation after the battery voltage recovers to 13Vdc/26Vdc/52Vdc (with power switch still in the “On” position). This function helps to save the users extra labor to reactivate the inverter when the low battery voltage returns to an acceptable range in the renewable energy systems. The built in battery charger will automatically reactivate as soon as city/generator ac has been stable for 15 seconds.
WARNING
Never leave the loads unattended, some loads (like a Heater) may cause accident in such cases.
It is better to shut everything down after low voltage trip than to leave your load on, due to the risk of fire.
Auto Gen Start
The inverter can be customized to start up a generator when battery voltage goes low.
When the inverter goes to low battery alarm, it can send a signal to start a generator, and turn the generator off after battery charging is finished.
The auto gen start feature will only work with generators designed to work with this feature. There is an open/closed relay that will short circuit the positive and negative cable from a generator. The input DC voltage can vary, but the Max current the relay can carry is 16Amp.
Conformal Coating
DEVEL entire line of XPT inverters have been processed with a conformal coating on the PCB making it water, rust, and dust resistant.
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3 Installation
3.1 Location
Follow all the local regulations to install the inverter.
Please install the equipment in a location that is Dry, Clean, Cool and that has good ventilation.
Working temperature: ‐10℃‐40℃
Storage temperature: ‐40‐70℃
Relative Humidity: 0%‐95%,non-condensing
Cooling: Forced air
3.2 DC Wiring recommendation
It is suggested the battery bank be kept as close as possible to the inverter. The following able is a suggested wiring option for 1 meter DC cable.
Please find the following minimum wire size. In case of DC cable longer than 1m, please increase the cross section of cable to reduce the loss.
Model
Watt
1.000
~
1.500
3.000
5.000
Battery Voltage
12Vdc
24Vdc
48Vdc
12Vdc
24Vdc
48Vdc
24Vdc
48Vdc
Wire Gage /Min
0~1.0m
30mm²
15mm²
10mm²
90mm²
45mm²
25mm²
75mm²
40mm²
1.0~5.0m
40mm²
20mm²
15mm²
120mm²
60mm²
30mm²
95mm²
50mm²
Model
Watt
2.000
4.000
6.000
Battery Voltage
12Vdc
24Vdc
48Vdc
12Vdc
24Vdc
48Vdc
24Vdc
48Vdc
Wire Gage /Min
0~1.0m
60mm²
30mm²
15mm²
120mm²
60mm²
30mm²
90mm²
45mm²
1.0~5.0m
75mm²
45mm²
25mm²
150mm²
75mm²
40mm²
120mm²
60mm²
24Vdc 120mm² 150mm²
10.000
48Vdc 75mm² 95mm²
8.000
48Vdc 60mm² 75mm²
12.000
48Vdc 90mm² 120mm²
Please note that if there is a problem obtaining for example 90mm²cable, use 2*50mm²or 3*35mm².
One cable is always best , but cable is simply copper and all you require is the copper, so it does not matter if it is one cable or 10 cables as long as the square area adds up. Performance of any product can be improved by thicker cable and shorter runs, so if in doubt round up and keep the length as short as possible.
3.3 AC Wiring
We recommend using 10-5Awg wire to connect to the ac terminal block.
There are 3 different ways of connecting to the terminal block depending on the model. All the wirings are CE compliant, Call our tech support if you are not sure about how to wire any part of your inverter.
- 19 -
Wiring Option 1
230V single phase/120V single phase
Input: Hot line+Neutral+Ground
Output: Hot line+Neutral+Ground
Wiring Option 2
230V split phase
Input: Hot line+ Hot line +Ground
Output: Hot line+ Hot line
+Neutral
Wiring Option 3
230V split phase
Input: Hot line+ Hot line +Ground
Output: Hot line +Neutral
Remark: In such cases, each output hotline can only carry a max of half the rated capacity.
`
- 20 -
4 Troubleshooting Guide
Troubleshooting contains information about how to troubleshoot possible error conditions while using the
XPT Series Inverter & Charger.
The following chart is designed to help you quickly pinpoint the most common inverter failures.
Indicator and Buzzer
- 21 -
Fault
Mode
Inverter
Mode
Indicator On Front Panel Indicator On Remote Module
Status Item
Line
Mode
Inverter
Mode
C.C
C.V
Float
Standby
Inverter On
Utility
Power On
Inverter
On
Fast
Charge
Float
Charge
Alarm
Over-Temp
Trip
Over-Load
Trip
Power Save
On
CHARGER
ON
INVERTER
ON
ALARM
Buzzer
√ × √ × × × × × √ × × ×
√ × × × × × × √ × × ×
√ × × √ × × × × √ × × ×
√ × × × × × × × × × × ×
× √ × × × × × × × √ × ×
Battery Low
Battery High
Overload On
Inverter Mode
×
×
×
√ × × √ × × × × √
√ × × √ × × × × √
√ × × √ × √ × × √
√
√
√
Over-Temp On
Inverter Mode
Over-Temp On
Line Mode
× √ × × √
√ × √ × √
√ × × × √ √
√ × × √ × √
Over Charge
Inverter Mode
Overload
√ × √ × √ × × × √ × √
Beep 0.5s every 1s
Beep
Lock × × × × × × × × × × × continuous
Battery High ×
Beep
√ × × × × × × × √ × continuous
Beep
× × × × × × √ × × × × continuous
Beep continuous
Beep 0.5s every 5s
Beep 0.5s every 1s
Refer to
“Audible alarm”
Beep 0.5s every 1s
Beep 0.5s every 1s
- 22 -
Fault
Mode
Over Charge
Back Feed
Short
× × continuous
Beep
√ × × × × × √ × × continuous
Beep
× × × × × × × × × × × continuous
Symptom
Inverter will not turn on during initial power up.
No AC output voltage and no indicator lights ON.
AC output voltage is low and the inverter turns loads OFF in a short time.
Charger is inoperative and unit will not accept AC.
Charger is supplying a lower charge rate.
Possible Cause
Batteries are not connected, loose battery-side connections.
Low battery voltage.
Inverter has been manually transitioned to OFF mode.
Low battery.
Recommended Solution
Check the batteries and cable connections. Check DC fuse and breaker.
Charge the battery.
Press the switch to Power saver on or Power saver off position.
Check the condition of the batteries and recharge if possible.
Charger turns OFF while charging from a generator.
Sensitive loads turn off
AC voltage has dropped out-of-tolerance
Charger controls are improperly set.
Low AC input voltage.
Loose battery or AC input connections.
Check the AC voltage for proper voltage and frequency.
Refer to the section on adjusting the “Charger Rate”.
Source qualified AC power..
Check all DC /AC connections.
High AC input voltages from the generator.
Load the generator down with a heavy load.
Turn the generator output voltage down.
Inverter's Low voltage trip voltage Choose narrow AC voltage in the
- 23 -
temporarily when transferring between grid and inverting.
Noise from Transformer/case* may be too low to sustain certain loads.
Applying specific loads such as hair drier
DIP switch, or Install a UPS if possible.
Remove the loads
*The reason for the noise from transformer and/or case
When in inverter mode sometimes the transformer and/or case of the inverter may vibrate and make noise.
If the noise comes from transformer:
According to the characteristics of our inverter, mainly there is one type of load which most likely may cause rattles of transformer.
That is half wave load: A load that uses only half cycle of the power (see figure 1). This tends to cause an imbalance of the magnetic field of the transformer, reducing its rated working freq from 20KHz to maybe 15KHz (it varies according to different loads). In such a case the frequency of noise falls exactly into the range (200Hz-20KHz) that human ears can hear.
The most common load of such kind is a hair drier.
If the noise comes from the case:
Normally when loaded with inductive loads, the magnetic field generated by the transformer keeps attracting or releasing the steel case at a specific freq, this may also cause noise.
Reducing the load power or using an inverter with bigger capacity will normally solve this problem.
The noise will not do any harm to the inverter or the loads.
Figure 1 Half Cycle Load Waveform
5 Warranty
We offer a 1 year limited warranty.
The following cases are not covered under warranty.
1 DC polarity reverse.
The inverter is designed without DC polarity reverse protection. A polarity reverse may severely damage the inverter.
2 Wrong AC wiring
3 Operating in a wet environment.
- 24 -
4 Operating with an undersized generator or generator with unqualified wave form.
6 Ordering Information
Model Identification and Numbering Conventions
The XPT Inverter is identified by the model/serial number labels. The Serial Number can be located on the mounting rail or inside the top cover. Model
Number labels may be located on the bottom side of the front cover or possibly inside the front cover. All the necessary information is provided on the label such as AC output voltage, power and frequency (punch holes).
The inverter also has a letter designator followed by 4-6 digits (depending on revision). The model number describes the type of inverter, the output specifications, the required battery voltage and the output voltage and frequency.
- 25 -
Appendix 1
ElectricalSpecifications
Model
ContinuousOutputPower
SurgeRating(20ms)
InverterOutput
DCInput
Charger
BTS
Bypass&
Protection
OutputWaveform
NominalEfficiency
LineModeEfficiency
PowerFactor
NominalOutputVoltagerms
OutputVoltageRegulation
OutputFrequency
ShortCircuitProtection
TypicaltransferTime
THD
NominalInputVoltage
MinimumStartVoltage
LowBatteryAlarm
LowBatteryTrip
HighVoltageAlarm
LowBatteryvoltagerecover
IdleConsumption-SearchMode
OutputVoltage
ChargerBreakerRating
MaxChargePowerRate
BatteryInitialVoltageforStart
OverChargeProtectionS.D.
BatteryTemperatureSensor
(Optional)
InputVoltageWaveform
NominalVoltage
MaxInputACVoltage
1.0KW
1.0KW
3.0KW
1.5KW
1.5KW
4.5KW
2.0KW
2.0KW
6.0KW
3.0KW 4.0KW
3.0KW 4.0KW
5.0KW
5.0KW
6.0KW
6.0KW
8.0KW
8.0KW
10.0KW 12.0KW
10.0KW 12.0KW
9.0KW 12.0KW 15.0KW 18.0KW 24.0KW 30.0KW 36.0KW
PureSinewave/Sameasinput(BypassMode)
>88%(Peak)
>95%
0.9-1.0
100-110-120Vac/220-230-240Vac
±10%RMS
50Hz ± 0.3Hz/60Hz ± 0.3Hz
Yes(1secafterfault)
12.0Vdc/24.0Vdc/48.0Vdc
10.0Vdc/10.5Vdcfor12VdcMode
10ms(Max)
<10%
24.0Vdc/48.0Vdc
10.5Vdc/11.0Vdcfor12VdcMode
48.0Vdc
10A
10.0Vdc/10.5Vdcfor12VdcMode
16.0Vdcfor12VdcMode
*2for24Vdc,*4for48Vdc;
15.5Vdcfor12VdcMode
<25WwhenPowerSaverOn.(RefertoTable)
15A 20A
Dependsonbatterytype(RefertoTable2.5.2)
20A 20A 30A 30A 40A
1/3RatingPower(RefertoTable2.5.3)
40A
10-15.7Vdcfor12VdcMode
15.7Vdcfor12VdcMode
*2for24Vdc,*4for48Vdc;
Yes(Refertothetable)
VariancesinChargingVoltage&S.DVoltageBaseontheBatteryTemperature.
Sinewave(GridorGenerator)
110Vac 120Vac 220Vac 230Vac 230Vac
150VACFor120VacLVMode;300VACFor230VacHVMode;
40A
- 26 -
SolarCharger
(Optional)
Mechanical
Specifications
NominalInputFrequency
LowFreqTrip
HighFreqTrip
Overloadprotection
(SMPSload)
OutputShortcircuitprotection
Bypassbreakerrating
Transferswitchrating
Bypasswithoutbattery connected
Maxbypasscurrent
RatedVoltage
SolarInputVoltageRange
RatedChargeCurrent
RatedOutputCurrent
SelfConsumption
BulkCharge(Default)
FloatingCharge(Default)
EqualizationCharge(Default)
OverChargeDisconnection
OverChargeRecovery
OverDischargeDisconnection
OverDischargeReconnection
10A 15A 20A
30AmpforUL&TUV
30Amp
47±0.3Hzfor50Hz,57±0.3Hzfor60Hz
55±0.3Hzfor50Hz,65±0.3Hzfor60Hz
30A
50Hzor60Hz
CircuitBreaker
CircuitBreaker
40A 40A
40AmpforUL
Yes(Optional)
40A
40Amp
12Vdc/24Vdc/48Vdc
15-30Vdc/30-55Vdc/55-100Vdc
40~60A
15A
<10mA
14.5Vdcfor12VdcMode
13.5Vdcfor12VdcMode
14.0Vdcfor12VdcMode
14.8Vdcfor12VdcMode
13.6Vdcfor12VdcMode
10.8Vdcfor12VdcMode
12.3Vdcfor12VdcMode
50A 63A
80AmpforUL
80Amp
(*2for24Vdc,*4for48Vdc)
63A
TemperatureCompensation
AmbientTemperature
-13.2mV/℃ for12VdcMode
0~40℃(Fullload) 40~60℃(Derating)
Mounting
InverterDimensions(L*W*H) 388*415*200mm
WallMount
488*415*200mm 588*415*200mm
21+2.5
22+2.5
23+2.5
27+2.5 38+2.5
48+2.5
49+2.5
60+2.5
66+2.5
70+2.5 InverterWeight(SolarChg)KG
ShippingDimensions(L*W*H) 550*520*310mm 650*520*310mm 750*520*310mm
ShippingWeight(SolarChg)KG 23+2.5
24+2.5
25+2.5
29+2.5 40+2.5
50+2.5
51+2.5
62+2.5
68+2.5
72+2.5
Display
StandardWarranty
StatusLEDs/StatusLEDs+LCD
3Years (Optional)
- 27 -
Appendix 2 Battery Temperature Compensation
Condition
Charger Mode
INV/CHG Status
CHG On >>>CHG Off
CHG Off >>> CHG On
Inverter Mode
S.D Point + 0.5Vdc
Over Temp Fault
Transfer Point
BTS ≥ 50℃
BTS ≤ 40℃
40℃ ≤ BTS ≤ 50℃
BTS ≥ 50℃
FastChargeVoltage
FloatChargeVoltage
BatteryLowAlarmVoltage
BatteryLowS.DVoltage
DefaultoutputvoltageforFloatandAbsorptionareat25℃.
ReduceFloatvoltagefollowsFloatvoltageandRaisedAbsorptionvoltagefollowsAbsorptionvoltage.
Inaadjustmodetemperaturecompensationdoesnotapply.
Note: Specifications subject to change without notice.
- 28 -
Suzhou DevelPower Energy Equipment Co., Ltd
Tel: 0086-512-68638910
Fax: 0086-0512-68638916
E-mail:[email protected]
Website:www.develpower.com
- 29 -

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