EN61036 EN61268 - Carlo Gavazzi AB

CARLO GAVAZZI
T
ha
sing
EN y o u
EN 610 f o r
61 36
26
8
ch
WM22-DIN: three-phase power
analyzer
Harmonic analysis; Energy meters;
Plug and play technique. These
are only a few among many other
functions performed by your
WM22-DIN. What’s more,
Carlo Gavazzi means ISO9001
certification, a working experience
of many decades and a widespread presence all over the world.
All this because we want our
customers to have the top service
and the top products.
Welcome in the Carlo Gavazzi
world and compliments for your
smart choice. Visit our website at:
www.carlogavazzi.com
Carlo Gavazzi
C o m p o n e n t s
oo
A u t o m a t i o n
n
k
2
Index
CARLO GAVAZZI
WM22 DIN, three-phase power analyzer.
FW rev. 02
TO BEGIN WITH ............................................................... 04
■ Front panel description ........................................... 04
■ List and description of displayed measuring pages ..... 04
PROGRAMMING .............................................................. 08
■ Access to the main menu ........................................ 08
■ Change password ................................................... 08
■ System ................................................................. 09
■ CT ratio ................................................................. 09
■ VT ratio ................................................................. 10
■ Dmd calculation ..................................................... 10
■ Total harmonic distortion ......................................... 11
■ Digital outputs ......................................................... 12
❑ Digital output 1 .................................................. 12
❑ Alarm digital output ........................................... 13
❑ Digital output 2 .................................................. 14
■ Analogue output ...................................................... 14
■ Setting of serial communication port address ......... 15
■ Digital filter .............................................................. 16
■ Reset of total meter ................................................. 16
■ Reset of partial meter .............................................. 17
■ Reset of max. dmd power values ............................ 17
■ Reset of max current values ................................... 18
■ End of programming ............................................... 18
■ How to prevent key-pad programming .................... 18
USEFUL INFORMATION .................................................. 19
■ Setting examples .................................................... 19
■ Table of open collector digital output pulses .................. 21
■ The message “Err” on the current page .................. 21
■ What is ASY? .......................................................... 22
■ Digital output for high or low alarm enabling ................... 22
■ List of available variables ................................................ 23
INSTALLATION ................................................................ 24
▲
▲
Front panel
3
4
Index
3
■ How to remove the upper cover .............................. 24
■ Module connections ........................................................ 25
■ Module removal ...................................................... 26
■ Dimensions and panel cut-out for panel mounting ..... 27
■ Open collector output connections .......................... 28
■ Analogue output connections .................................. 28
■ Serial output connections ........................................ 28
■ Electrical diagrams of 90A version .......................... 29
■ Electrical diagrams of 5A version ............................ 30
TECHNICAL FEATURES ................................................. 34
We suggest you to keep the original packing
in case it is necessary to return the instrument to our Technical Service Department. In
order to achieve the best results with your
instrument, we recommend you to read this
instruction manual carefully.
HOW TO USE THE SYMBOLS
Go to the page where the previous main
subject is described.
▲
Go to the page where the subject written on
the top of the current page starts.
Go to the page where the subject written on
the bottom of the current page starts.
This symbol indicates a particularly important
subject or information.
This symbol indicates that more details are
given on the current subject.
Displayed pages
2
▲
▲
▲
Go to the page where the next main subject is
described.
7
4
To begin with
■ Front panel description
Display
previous page
Display
next page
Backlighted
LCD display
Instrument
reference number
(optional indication)
Access to
programming or
Setting confirmation
■ List and description of the displayed measuring pages
PFΣ
WΣ
VArΣ
Hz
When the instrument is
switched on, it shows the
measuring page described on the left; to display the other pages,
scroll them by means of
the
keys. This
command is cyclic.
W dmd
VA dmd
These pages are available only if THD is enabled.
Total harmonic distortion expressed as % for the following
voltages:
V-L2
V-L3 V-L1
▲
▲
Displayed pages
7
6
5
To begin with
Total harmonic distortion
expressed as % for the
following currents:
A-L3 A-L1
A-L2
Total kWh
energy meter.
Total kvarh
energy meter.
Partial kWh
energy meter.
Partial kvarh
energy meter.
System
4
7
▲
▲
Index
3
9
To begin with
V-L2
V-L3
V-L1
VΣ is always 00 in
case of connections
without neutral
A-L2
A-L1
Err: it’s displayed in
case of wrong connections in one of the 3
A-L3 phases. See “Useful information” on page 21.
For version 20(90)A only.
Display of max. current values.
For version 5(10)A only.
Display of max. power demand,
values (W, VA).
W-L2
W-L3
W-L1
WΣ is always 00 in
case of connections
without neutral.
Programming
4
7
▲
▲
6
8
To begin with
VA-L2
VA-L3
7
VA-L1
VAΣ is always 00 in
case of connections
without neutral.
VAr-L2
VAr-L1
VArΣ is always 00 in
case of connections
VAr-L3 without neutral.
PF-L2
PF-L3
PF-L1
PFΣ is always 00 in
case of connections
without neutral.
If displayed in the measuring
mode, it means: the alarm is
ON.
If the serial port module RS422/485 is present, then “r” means
that the instrument is receiving data, while “t” means that the
instrument is transmitting data: this confirms that the serial
module is working correctly and that also the wiring is correct.
Harmonic distortion
4
7
▲
▲
Displayed pages
5
11
8
Programming
■ Access
to the main menu
To access to the programming
menus from the measuring and display phase, press the
key: when
the instrument asks for the password, enter the correct PASS value
by means of the
and
keys;
afterwards confirm by means of the
key. If the password is correct
(when the instrument is new, the
password is 0), the instrument goes
to the main functions menu.
1.2..
..2.1
Access to the
main menu
■ Change Password
This function allows the operator to
choose the desired password value
(from 0 to 1000).
Choose the “CnG.PASS” function
by means of the
and
keys,
then press
to modify PASS, enter the desired value by means of
the
and
keys and confirm
the new value with the
key.
1.2..
..2.1
When the “AL” box (normally used for the alarm indication) is active during the programming phase, it
means that the displayed value can be modified. This
rule applies to all the programming menus.
VT ratio
18
▲
▲
Index
3
10
Programming
9
■ System
This function allows the operator to
select the electrical system choosing between three-phase with neutral (3P.n) and three-phase without
neutral (3P).
and
Choose by means of
the “SySTEn” function, press
to enter the menu; then, select the
desired system by means of the
and
keys and confirm with
.
■ CT ratio
This function allows the user to select the value of the CT ratio. Example: if the CT primary (ammeter
transformer) has a current of 300A
and the secondary has a current of
5A, the CT ratio corresponds to 60
(obtained by carrying out the following calculation: 300/5).
Choose the “Ct.rAtio” function by
means of the
and
keys; to
enter the menu press
; then select the desired value by means of
the
and
keys and confirm
the new value with
.
1.2..
..2.1
The energy meters are
reset by changing the CT
ratio.
Alarm output
8
18
▲
▲
Displayed pages
7
13
10
Programming
■ VT ratio
This function allows the user to select the value of the VT ratio. Example: if the primary of the connected
VT (voltage transformer) is of 20kV
and the secondary is 100V, the VT
ratio will correspond to 200 (obtained
by carrying out the following calculation: 20000/100).
Choose the “Vt.rAtio” function by
means of the
and
keys; to
enter the menu press
, then select the desired value by means of
the
and
keys and confirm
it with
.
1.2..
..2.1
By changing the VT ratio,
the energy meters are reset.
■ Dmd calculation
This function allows the user to select the integration time of the W, VA
demand value. To enter these functions select “P.int t” from the main
menu by the
and
keys; to
. Set
enter in the menu press
the minutes by means of the
and
keys and confirm the new value
with
.
1.2..
..2.1
Digital output 1
8
18
▲
▲
Displayed pages
5
12
Programming
11
If for example, you select the value “15 minutes”,
the instrument calculates the demand value and
updates the value every 15 minutes. See the
diagram below.
Where:
Pc is the contractual power
t1 is the selected integration period
SYNCHRONIZATION OF THE POWER DEMAND
CALCULATION
The beginning of the synchronization and as a consequence
the start of the integration time counting are carried out when
the instrument switches on (W dmd and VA dmd).
■ Total Harmonic Distortion
This function allows the user to enable the FFT analysis and the display of the total harmonic distortion
(see also “displayed measuring
pages” on page 4). Choose the “tHd”
function by means of the
and
keys, to enter the menu press
; then choose if the function is
to be enabled (YES) or disabled
(NO) by means of the
and
keys and confirm with
.
CT ratio
▲
Serial address
8
18
▲
9
15
12
Programming
■ Digital Outputs
❑ Digital Output 1
Alarm parameters page 13
1.2..
..2.1
To Digital Output 2
page 14
This function enables to set the parameters of the open collector digital outputs. Choose the “diGout”
function by means of the
and
keys, to enter the menu press
. Then, you may set the following parameters:
ACt EnE: enable the retransmission
of the active energy by means of
pulses, confirm with
and then
set the number of pulses (see table
on page 21) by means of the
and
keys and confirm the value
with
;
rEA EnE: enable the retransmission
of the reactive energy by means of
pulses, confirm it with
and then
set the number of pulses (see table
on page 21) by means of the
and
keys and confirm the value
with
;
ALr: access to the alarm function
(see alarm digital output on page
13): confirm with
to enter the
relevant menu;
rEn: enables the activation of the
output by means of the serial communication; confirm with
to enable the function.
Digital Output N 2
8
18
▲
▲
Displayed pages
7
14
Programming
13
❑ Alarm Digital Output
8
18
▲
11
▲
This function allows the user to set
the parameters of the alarm digital
output. Choose the “diGout1- ALr ”
function by means of the
keys: to enter the menu press
.
Then, you may set the following parameters:
VAr: choose the variable to be associated to the alarm activation by
means of the
and
keys and
confirm with
(see also the table
on page 23);
Set-on: on-alarm set-point, it’s the
value of the variable over which the
alarm is activated. Select the value
1.2..
of the variable by means of the
..2.1
and
keys and confirm with
;
Set-oFF: off-alarm set-point, it’s the
value of the variable over which the
1.2..
alarm is deactivated. Select the value
..2.1
of the variable by means of the
and
keys and confirm it with
;
nd: normally de-energized output
when there is no alarm.
nE: normally energized output when
there is no alarm.
Select the output status by means of
the
and
keys and confirm it
with
;
1.2..
..2.1
SEC: delay time at the activation of
the alarm output. Choose the value
of the delay time in seconds by
To digital output on
means of the
and
keys (up
page 14.
to 255 seconds) and confirm with
.
Reset of partial meter
Harmonic distortion
17
14
Programming
From digital output 1,
rEn,PuL,SEC page 12
❑ Digital output 2
ACt EnE: enables the retransmission
of the active energy by means of
and afterpulses; confirm with
wards set the number of pulses (see
table on page 21) by means of the
and
keys and confirm the
;
value with
rEA EnE: enable the retransmission
by means of pulses of the reactive
and then
energy, confirm it with
set the number of pulses (see table
on page 21) by means of the
and
keys and confirm the value
with
.
1.2..
..2.1
■ Analogue output
From the main menu select “AnA
out” by means of the
and
keys; to enter the menu press
:
VAr: variable to be associated to the
output, choose among those available (see on page 23) by means of
the
and
keys and confirm
the selection with
.
LoE: minimum value of the variable
input range. Select the desired value
by means of the
and
keys
and confirm it with
.
HiE: maximum value of the variable
1.2..
..2.1
Digital filter
8
18
▲
▲
Power dmd
11
16
Programming
15
input range. Select the desired value
by means of the
and
keys
.
and confirm it with
LoA: % value of the zero of the
output range (0-20mA, 0-10V) that is
generated by the minimum measured value (LoE). Select the desired
value by means of the
and
keys and confirm it with
.
HiA: % value of the full scale of the
output range (0-20mA, 0-10V) that is
generated by the maximum measured value (HiE).
Select the desired value by means of
and
keys and confirm it
the
with
. See also “Example 1” in
useful information on page 19.
1.2..
..2.1
1.2..
..2.1
1.2..
..2.1
■ RS422/ 485 Serial port address
Select “AddrESS” from the main
menu by means of the
and
keys; to enter the menu press
,
then set the desired address value
(from 1 to 255) by means of the
and
keys and confirm it with
.
1.2..
..2.1
Alarm
▲
Useful information
8
18
▲
13
19
16
Programming
■ Digital Filter
Select “FiLtEr” by means of the
and
keys: to enter the menu
press
. Select the parameters to
be set with the
and
keys, to
.
enter the menu press
There are two parameters:
1.2..
..2.1
- rnG, to set the operating range of
the digital filter. The value is expressed as % of the full scale value:
set the desired value (from 0 to 100%)
by means of the
and
keys
1.2..
..2.1
and confirm it with
;
- CoE, to set the filtering coefficient of the instantaneous
measurements, set the desired value (from 1 to 16) by means
of the
and
keys and confirm it with
. By increasing
the value both the stability and the settling time of the measurements are increased. See also “Example 2” in Useful
Information on page 20.
■ Reset of Total meters
Select “rESEt tot” from the main
menu by means of the
and
keys, confirm with
: when the
instrument asks for the reset, you
can choose, by means of the
and
keys:
- “no tot” to avoid the reset or
- “YES tot” to confirm it.
Then, press
to carry out the
command.
RESET
End of programming
8
18
▲
8
▲
Programming
18
Programming
17
■ Reset of partial meters
Select “rESEt Prt” from the main
menu by means of the
and
keys, confirm with
; when the
instrument asks for the reset, you
can choose, by means of the
and
keys:
- “no Prt” to avoid the reset or
- “YES Prt” to confirm it;
Then, press
to carry out the
command.
RESET
■ Only in the 5(10)A version
Reset of the maximum values
of the dmd powers
Select “rESEt dmd” from the main
menu by means of the
and
keys, confirm with
; when the
instrument asks for the reset, you
can choose, by means of the
and
keys:
- “no dmd” to avoid the reset or
- “YES dmd” to confirm it;
Then, press
to carry out the
command.
RESET
Serial address
▲
What is Asy
8
18
▲
15
21
18
Programming
■ Only in the version 20(90)A.
Reset of the maximum current
values
Select “rESEt m” from the main
menu by means of the
and
keys, confirm it with
; when the
instrument asks for the reset, you
can choose, by means of the
and
keys:
- “no m” to avoid the reset or “YES
m” to confirm it
to carry out the
Then, press
command.
RESET
■ End of programming
Use it to exit from programming and
go back to the measuring mode.
Select “End” from the main menu by
Instrument’s
means of the
and
keys,
Measuring revision
confirm it with
.
mode
■
How to prevent the programming by key-pad
Slot B
on
FREE Access
1 2
on
It’s possible to prevent access to
programming by modifying the dipswitch under slot B. Set dip-switch 1
in position ON to inhibit programming; Set dip-switch 1 in position
OFF to enable programming again.
Access DENIED
Example 2
8
▲
▲
Alarm
13
20
Useful information
19
The variables measured by the instrument are
correct if the polarities of the inputs have
been observed (as shown in the figure below); if not, measuring and retransmission
errors may occur due to the wrong direction
of the current flowing in the primary / secondary of the connected current transformer.
■ Setting Examples
Example 1 “Analogue output”: take the measure of a power
consumed up to 100kW, and retransmit it with a signal from 4
to 20 mA; the module to be used is AO2920 (from 0 to 20mA),
the instrument must be set as follows:
• VAr: (variable), WΣ (system active power)
• LoE: (minimum electrical scale) 0.0 K; the K and M multiples
are automatically selected by the instrument according to
the selected VT and CT values;
• HiE: (maximum electrical scale) 100.0 K; the K and M
multiples are automatically selected by the instrument according to the selected VT and CT values;
• LoA: (minimum electrical scale of the analogue output)
20.0% for 4mA, the calculation to be carried out is: (minimum output value/ full scale output value)*100 = (4mA/
20mA)*100 = 20%
• HiA: (maximum electrical scale of the analogue output)
100.0% for 20mA, the calculation to be carried out is:
(maximum output value / full scale output value)*100 =
(20mA/20mA)*100 =100%
List of the variables
23
▲
▲
Reset of the meters
17
23
20
Useful information
Example 2 “Use of digital filter”: it’s necessary to stabilize
the displayed value of the VL1-N variable that varies between
222V and 228V. The parameters of the digital filter are to be set
as follows:
• rnG: the variable varies within the average value, the amplitude of which is equal to ±1.3% of the variable’s rated value,
calculated as follows:
(228-222)/2=±3V, then ±3*100/231V=±1.3% where 231V is
the phase-neutral rated value of a 400V input range). The
“range” parameter, that corresponds to the action range of
the digital filter, is set at a value which is slightly higher than
the percentage amplitude of the fluctuation: e.g. 2%.
• CoE: if the new value acquired by the instrument is within the
filter’s action range, then the new displayed value is calculated by summing algebraically to the previous value the
variation divided by the filtering coefficient. As a consequence, a value which is higher than this coefficient implies
a longer settling time and therefore improves the stability.
The latter can also be improved by increasing the filtering
coefficient: the admitted values are within 1 and 16. Enter the
value in consecutive attempts until you reach the desired
stability.
■ CT and VT programming; Open collector Pulse
Digital Output Table
The CT is programmable from 1 to 5000, the VT is programmable from 1.0 to 199.9 and from 200 to 1999 (CT*VT ratio
limited to 5000). The CT must be programmed before the VT
because the programming of VT depends on the CT value: if
the CT is modified, then the VT value can automatically satisfy
the expression: CT*VT≤5000. If the CT or VT values are
modified, then the display resolution of the variables and of the
“pul” (pulses) parameter changes automatically according to
the table on the following page.
When the CT or VT value is modified, then the energy meters
What is Asy
19
23
▲
▲
Serial address
19
22
Useful information
21
are reset (after an alert message for confirmation). The resolution of the energy meters is 0.1k (Wh/varh) with maximum
indication 19999999k (display from 0.0k to 1999999.9k and
from 2000000k to 19999999k). Once the limit of 19999999k is
reached, the meters are automatically reset.
WM22 version 5(10) A
CT ratio* VT ratio
Range (pulses / kWh / kvarh)
From
To
From
To
1.0
5.0
1
100
Pulses/kWh/kvarh
5.1
50.0
0.1
10.0
Pulses/kWh/kvarh
50.1
500.0
0.01
1.00
Pulses/kWh/kvarh
500.1
5000.0
1
100
Pulses/kWh/kvarh
WM22 version 20(90)A excluded 660VAC
CT ratio * VT ratio
Range (pulses/ kWh/ kvarh)
From
To
From
To
1.0
5.0
1
100
Pulses/kWh/kvarh
WM22 version 20(90)A only version 660VAC
CT ratio * VT ratio
Range (pulses / kWh/ kvarh)
From
To
From
To
5.1
50.0
0.1
10.0
Pulses/kWh/kvarh
■ The “Err” message in the currents page
The instrument takes the measure only for quadrants 1 and 4
(consumed energy). The active energy is obtained by integrating only the sum of the phase active powers on quadrants 1
and 4. Any active powers in quadrants 2 and 3 are forced to
zero and the message “Err” is displayed on the current page
to indicate a wrong connection. For the phases with active
power in quadrants 2 and 3 also the reactive and the apparent
powers are forced to zero. The single phase “var” indication is
Module combination
19
23
▲
▲
Example 1
19
25
22
Useful information
always without sign. The “L” or “C” type are displayed with the
PF phase variables. The total system “var’s” are obtained by
summing algebraically the single phase “var’s” (“L” type “var’s”
are considered positive, “C” type “var’s” are considered negative). The system’s PF shows the “L” or “C” sign depending on
the result of the algebraic sum of the single phase “var’s”.
■ What is ASY
The ASY variable allows the user to control the symmetry of
the delta voltages (for systems without neutral) and star
voltages (for systems with neutral). The variable is calculated
according to the following formula:
ASY =
Vmax - Vmin
Vavg
* 100
Where: Vmax is the max. value among VL1-N, VL2-N, VL3-N
Vmin is the min. value among VL1-N, VL2-N, VL3-N
Vavg is the average: (VL1-N, VL2-N, VL3-N)/3
The variable is not displayed by the instrument, but
can be retransmitted by the analogue or RS422 /
485 output and can be controlled by means of the
alarm.
■ Alarm digital output
The activation of the alarm can be high or low depending on how the
ON and OFF parameters have been set, as per the following table:
ON-OFF
VALUES STATUS
ON
ALARM TYPE
OFF
HIGH
ON < OFF
LOW
Removing the cover
19
23
▲
▲
Reset of meters
17
24
Useful information
23
■ List of the variables
Variables that can be retransmitted by means of an analogue
output or controlled by means of an alarm output.
W dmd
Active power demand
VA dmd
Apparent power demand
V∑
System voltage
PF ∑
System power factor
V tHd
Voltage total harmonic distortion
A tHd
Current total harmonic distortion
ASY
Asymmetry
W∑
System active power
VA ∑
System apparent power
VAr ∑
System reactive power
It may be useful to know that the menus displayed by
the instrument depend on its configuration; e.g.: the
instrument will not display the menu relevant to the
digital outputs if the optional module is not mounted.
IT IS IMPORTANT that the instrument is switched
off when you plug-in or disconnect the modules.
For SAFETY reasons, in the 20 (90)A version,
the tightening torque value of the current terminals must
be within 2Nm and 6Nm.
Dimensions, panel cut-out
19
23
▲
▲
The “Err” message
21
27
24
Installation
■ How to remove the front cover
Press
Press
Press
Press
To remove the front cover of WM22, press contemporaneously the four release levers at the four angles of the instrument as shown above.
Auxiliary
power supply
Neutral
input
Module 2
Slot B
Measuring inputs
Removing the modules
33
▲
▲
Useful information
19
Module 1
Slot A
26
Installation
25
■ The possible module combinations
SELFSUPPLIED
MODULE DESCRIPTION
AO2900 open collector output
(pulse, alarm or remote)
AUXILIARY POWER
SUPPLY
A
A
✓
✓
B
AO2920/ AO2921 analogue output
✓
RS422/485 AR2950 serial output
✓
OPEN COLLECTOR
OUTPUT
AO 2900
ANALOGUE OUTPUT
AO 2920: 0-20 mA
AO 2921: 0-10 VDC
RS422/ 485
SERIAL PORT
AR 2950
Electrical connections
24
33
▲
▲
List of the variables
23
29
26
Installation
■ Removing the modules
Connection
label
Slot for the
screwdriver
Identification
label
To remove the modules, use a screwdriver. Insert the screwdriver in the slot on the side of the removable modules, as
indicated in the figure above. Use the screwdriver as a lever
to take out the module. For the second module follow the same
procedure.
Output connections
24
33
▲
▲
The “Err” message
21
28
Installation
on
1 2
on
Slot B
1 2
27
Access to
programming:
ALLOWED.
Access to
programming:
DENIED.
To configure the instrument correctly, it is important to verify that dip-switch 1 is in position OFF.
WARNING: DANGEROUS VOLTAGES.
The connectors in the optional slots and the
screws of the terminals are live if the instrument
or the connected load are powered on.
■ Dimensions and panel cut-out
Dimensions
for
panel-cut-out
Hole
distances
dimensions
for panel
mounting
5A Electrical Connections
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Available Modules
25
31
28
Installation
■ Open collector output connections
The grounds of the outputs are separate, so that it’s possible
to carry out two different connections for the same module.
The load resistance (Rc) must have a value that makes the
short-circuit current lower than 100mA, the VDC voltage must
be lower than or equal to 30V.
■ Analogue output connections
0-10V output
0-20mA output
■ RS422/ 485 Serial port connections
2-wire connections
5A Electrical connections
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List of the variables
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29
Installation
29
4-wire connection
The termination of the serial output is carried out only on the
last instrument of the network, by means of a jumper connection between (RX-) and (T).
■ Electrical diagrams - 90 A version
Auxiliary power supply
LOAD
Fig.1: Direct connection
with neutral (3-wire
system).
Unbalanced load.
Auxiliary power supply
LOAD
Fig.2: Direct connection
without neutral (3-wire
system).
Unbalanced load.
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5A Electrical connections
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Dimensions, panel cut-out
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33
30
Installation
LOAD
Self power-supply
Fig.3: direct connection
with/without neutral
(3-wire system).
Unbalanced load.
Note: the neutral in the
self-supplied version
must always be connected to the instrument.
■ 5 A Version Electrical Diagrams
Auxiliary power supply
LOAD
Fig.4: Direct connection
with/without neutral
(3-wire system).
Unbalanced load.
Auxiliary power supply
LOAD
Fig.5: CT connection
with neutral
(3-wire system).
Unbalanced load.
CT / VT ARON connection
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Available modules
25
32
Installation
31
In the DUAL PHASE SYSTEMS both the voltage
inputs and the current inputs of phase 1 and 2 must
be connected and the system parameter must be
programmed like “3P.n”. Phase 3 must not be connected.
The parameters of phase 3 are displayed at 0, the
system voltage variable and the asymmetry control are not correct.
■ 5 A version electrical connections
Auxiliary power supply
LOAD
Fig.6: 3-phase CT
connection without
neutral. Unbalanced
load.
Auxiliary power supply
LOAD
Fig.7: 3-phase ARON
CT connection without
neutral. Unbalanced
load.
Technical features
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90A connections
29
35
32
Installation
■ 5A Version Electrical Diagrams
Auxiliary power supply
LOAD
Fig. 8: ARON CT and
VT connection without
neutral (3-wire system).
Unbalanced load.
Auxiliary power-supply.
LOAD
Fig.9: CT and VT
connection with neutral
(3-wire systems).
Unbalanced load.
Technical features
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Panel cut-out
27
34
Installation
33
■ 5 A Version Electrical Diagrams
Auxiliary power supply
LOAD
Fig.10: CT and VT
connection without
neutral (3-wire system).
Unbalanced load.
Auxiliary power supply
LOAD
Fig.11: CT and VT
connection without
neutral (3-wire system).
Unbalanced load.
Software functions
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Dual-phase system
31
38
34
Technical features
■ Number of inputs
Current: 3
Voltage: 4
■ Accuracy
Display, RS422/485 Ib: 5A, Imax: 10A; Ib: 20A, Imax: 90A.
Current: from 0.003Ib to 0.2Ib: ±(0.5%RDG +3DGT);
from 0.2Ib to Imax: ±(0.5% RDG +1DGT).
Voltage: in the range Un: ±(0.5% RDG +1DGT).
Frequency: ±0.1% RDG (50 to 60 Hz).
Active power (@ 25°C ± 5°C, R.H. ≤ 90%):
±1% RDG ±1DGT (PF 1, 0.1 Ib to Imax, in the range Un; PF
0.5L, PF 0.8C, 0.2Ib to Imax, in the range Un).
Reactive power (@ 25°C ± 5°C, R.H. ≤ 90%):
±2% RDG ±1DGT (senϕ 1, 0.05Ib to Imax, in the range Un;
senϕ 0.5L, senϕ 0.5C, 0.1Ib to Imax, in the range Un).
Apparent power (@ 25°C ± 5°C, R.H. ≤ 90%): ±1%RDG
±1dgt (PF 1, 0.1Ib to Imax, in the range Un).
Energies (@ 25°C ± 5°C, R.H. ≤ 90%): Class 1 according to
EN61036, class 2 according to EN61268.
Measuring inputs: Ib: 5A, Imax: 10A; 0.1Ib: 500mA; start-up
current: 20mA Un: see “Rated input ” page 36.
Ib: 20A, Imax: 90A; 0.1Ib: 2A; start-up current: 80mA; Un:
see “Rated input voltages” page 36.
Harmonic distortion: ±3% F.S. (F.S.: 100%); (@ 25°C ±5°C,
H.R. ≤ 90%) up to the 7th harmonic; Un: see “Rated input
voltages” page 36; Ib 5A, Imin: 500mA, Imax: 15Ap; Ib 20A,
Imin: 2A, Imax: 127Ap.
■ Additional errors
According to EN61036, EN61268
Wave form: <1% (3rd harmonic: 10%).
Voltage asymmetry: < 0.5% (with reference to Un).
Magnetic induction: 0 (up to 0.5 mT).
Output modules tech. features
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Output connections
29
36
Technical features
35
HF electromagnetic fields: < 1%
Influence of accessories: 0
■ Temperature drift
≤ 200ppm/°C
■ Sampling
1000 samples/s at 50Hz
■ Display
Type: Back-lighted LCD.
Display of instantaneous variables: 4x3 1/2 DGT.
Energies : Totals: 1x7 1/2 DGT; Partials: 1x7 1/2 DGT.
■ Maximum and minimum indication
Max. 1999 (19999999), Min. 0.
■ Measurements
Current, voltage, power, energy, power factor, frequency,
harmonic distortion (see display specifications).
TRMS measurement of distorted wave forms.
Coupling: direct.
■ Crest factor
Ib 5A : ≤3 (15A peak max.).
Ib 20A: ≤6 (127A peak max).
■ Current overload
5(10) A, for 10ms:
5(10) A, for 500ms:
5(10) A, permanent:
20(90) A, for 10ms:
20(90) A, permanent:
300 A max, at 50Hz
200 A max, at 50Hz
10A, at 50Hz
2700A max, at 50Hz
90A, at 50Hz
■ Voltage overload
Permanent: 1.2 Un.
For 1s: 2 Un.
Power supply tech. features
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5A connection
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39
36
Technical features
■ Rated input voltages (Un)/range
AV0-AV4: 208VL-L / -20% ≤ Un ≤ + 20%
AV8: 208VL-L / -20% ≤ Un ≤ + 15%
AV1-AV5-AV9: 400VL-L / -20% ≤ Un ≤ + 15%
AV3-AV7: 660VL-L / -30% ≤ Un ≤ + 15%
AV6: 100VL-L / -20% ≤ Un ≤ + 20%
■ Input impedance
AV1-AV5-AV9: 400VL-L
AV0-AV4-AV8: 208VL-L
AV3-AV7: 660VL-L
AV6: 100VL-L
AV4-AV5-AV6-AV7: 5(10) A
AV0-AV1-AV3-AV8-AV9: 20(90) A
> 720kΩ
> 720kΩ
> 1.97MΩ
> 400kΩ
< 0.3VA
< 4VA
■ Frequency
50 to 60 Hz
■ Harmonic analysis
Algorithm: FFT
Harmonic order: current: up to the 7th harmonic;
voltage: up to the 7th harmonic.
Harmonic distortion: THD (VL1), THD (VL2), THD (VL3), THD
(AL1) , THD (AL2), THD (AL3).
Display: THD %
System: the harmonic distortion can be measured both on 3wire systems and on 4-wire systems.
■ Output modules technical features
Analogue outputs (on request).
Number of outputs: 1.
0 to 20 mADC: (module AO2920 slot B, only for versions with
auxiliary power supply).
0 to 10VDC: (module AO2921 slot B, only for versions with
auxiliary power supply).
Accuracy: ±0.5% F.S.
Temperature drift: < 300 ppm/ °C
Software functions
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Dual phase system
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38
Technical features
37
Scaling factor: programmable within the whole retransmission
range; it allows the retransmission of all the values within: 0
and 20 mADC, 0 and 10 VDC.
Response time: system variables V, W, VA, var, cosϕ
FFT off, filter off: 900ms; FFT on, filter on: 1.4s;
variables THD-V, THD-A Filter off: 3s;
Ripple: ≤ 1% acc. to IEC 60688-1, EN 60688-1.
Load: 20 mADC: ≤ 500 Ohm; 10 VDC: ≥ 10 kOhm.
Insulation: by means of optocouplers, 2000 Vrms between
output and measuring input, 2000 Vrms between output and
power supply input.
RS422/RS485 (on request).
Module AR2950.
Type: Bidirectional multidrop (static and dynamic variables).
Connections: 2 or 4 wires, max. distance 1200m, termination directly on the instrument.
Addresses: 255, key-pad selectable.
Protocol: MODBUS/JBUS.
Data (bidirectional): dynamic (reading only); system and
phase variable: see “display” on page 39.
Static (writing only): all the configuration parameters, energy reset, activation of static output; energy storing
(EEPROM) max. 19.999.999kWh/kvarh.
Data format: 1 start bit; 8 data bit; no parity, 1 stop bit.
Baud-rate: 9600 bit/s.
Insulation: by means of optocouplers, 2000 Vrms between
output and measuring inputs, 2000 Vrms between output and
power supply input.
Digital outputs (on request).
Module AO2900.
Digital outputs can be used as alarm, for energy retransmission
or remote static outputs.
Three operating modes are selectable:
- dual pulse output (kWh and kvarh);
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Measurements
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38
Technical features
- one alarm output and one pulse output (kWh or kvarh)
- one output remotely controlled by means of the serial communication and one pulse output (kWh or kvarh)
Pulse outputs: number of outputs: 2; number of pulses from
0.01 to 100 pulses programmable depending on the selected
CT and VT ratio.
Type: open collector (NPN transistor); VON 1.2 VDC max.
100mA; VOFF 30 VDC max.
Pulse duration: 220 ms (ON); ≥ 220 ms (OFF), according to
DIN43864.
Insulation: by means of optocouplers, 2000Vrms between
outputs and measuring input, 2000 Vrms between output and
power supply input; insulation between the two outputs: functional.
Alarm output
Number of outputs: 1
Alarm type: maximum or minimum, phase asymmetry, phase loss.
Set-point: can be modified from 0 to 100% of the electrical scale.
Hysteresis: can be modified from 0 to 100% of the electrical scale.
Activation time delay: programmable from 0 to 255 sec.
Response time: system variables V, W, VA, var, cosϕ (PF), FFT
off, filter off: 700ms; FFT on, filter on: 1.2s;THD-V, THD-A variables, Filter off: 3s;
Type: open collector (NPN transistor);
VON 1.2 VDC / max. 100 mA; VOFF 30 VDC max.
Insulation: by means of optocouplers, 2000 Vrms
between output and measuring input, 2000 Vrms between
output and power supply input; insulation between the two
outputs: functional.
■ Software functions
Password: numerical code of max 3 digits; 2 protection levels of the programming data: 1st level:
Password = “0”, no protection; 2nd level: Password from 1 to
1000, all data are protected.
General features
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5A connections
33
40
Technical features
39
System selection: three-phase with neutral, three-phase without neutral.
Transformer ratio: CT from 1 to 5000; VT from 1.0 to 199.9
and from 200 to 1999.
Scaling factor. Operating mode: compression/expansion of the
measuring range that can be connected to the analogue output;
measuring range: programmable within the whole electrical range.
Filter. Operating range: from 0 to 99.9% of the input electrical
scale; filtering coefficient: from 1 to 16; filter action: alarm,
analogue and serial output (fundamental variables: V, A, W
and derived variables).
Display: up to 4 variables/page.
System variables
Page 1: W-var-PF (cosϕ)
Page 2: W med - VA med - Hz
Single phase variables Page 3: THD-V
Page 4: THD-A
System variables
Page 5: kWh total
Page 6: kvarh total
Page 7: kWh partial
Page 8: kvarh partial
Single phase variables Page 9: VL-N
Page 10: A
20(90) A
Page 11a: A MAX
5(10) A
Page 11b: Wdmd MAX VAdmd MAX
Page 12: W
Page 13: VA
Page 14: var
Page 15: PF (cosϕ)
■ Power supply features
Self-supplied version: 400VL-L -20% +15%, 50-60Hz;
208VL-L -20% +15% , 50-60Hz.
Auxiliary power supply: 230V -15 +10%, 50-60Hz;
115V -15 +10%, 50-60Hz; 48VAC -15 +10%, 50-60Hz;
24VAC -15 +10%, 50-60Hz.
Energy consumption: ≤ 7VA.
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Accuracy
37
40
Technical features
■ General
features
Operating temperature: 0 to +55°C (R.H. < 90% non condensing at 40°C).
Storage temperature: -20 to +60°C (R.H. < 90% non condensing at 40°C).
Installation category: Cat. III (IEC 664).
Insulation: 2000 Vrms between inputs/outputs and earth.
Dielectric strength: 4000 Vrms for 1 minute.
Rejection: CMRR 100 dB, 48 to 62 Hz.
EMC: burst: 4kV/level 4 (EN61000-4-4); radiated electromagnetic fields: 10V/m 26-1000MHz (EN61000-4-3); electrostatic
discharges: 15kV (EN61000-4-2); radio frequency emissions
according to the limits of CISPR 14 and CISPR 22; pulse voltage (1.2/50µs): 8kV (EN61000-4-5).
Standards: safety IEC664-1; energy metrology measurement:
EN61036, EN61268; pulse output: DIN43864.
Approvals: CE.
Connections 5 (10) A: screw-type, max. cable cross sectional area 4 mm2.
Connections 20 (90) A: screw-type, min./max cable cross
sectional area 6 mm2 / 35 mm2; min./max. tightening torque
(90A inputs) from 2 Nm to 6 Nm.
Housing
Dimensions 162.5 x 90 x 63 mm.
Material: ABS, NORYL, PC self-extinguishing: UL 94 V-0.
Mounting: DIN-rail and wall mounting.
Protection degree:
front: IP40;
connections: IP20;
Weight:
800 g approx. (packing included).
Note: the pictures in this manual show a WM22-DIN, version 5(10)A.
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Measurements
35