Specifications are subject to change without notice WM12-96 DS110806 1
•Accuracy ±0.5 F.S. (current/voltage)
•Multifunction indicator
•Display of instantaneous variables: 3x3 digit
•Variable system and phase measurements: W, Wdmd,
var, VA, VAdmd,PF, V, A, An, Hz
•Amax, Wdmd max indication
•TRMS meas. of distorted sine waves (voltages/currents)
•Power supply: 24V, 48V, 115V, 230V, 50-60Hz; 18 to 60VDC
•Protection degree (front): IP65
•Front dimensions: 96x96mm
•Optional RS422/485 serial output
•Alarms (visual only) VLN,An
Product Description
3-phase multifunction power
indicator with built-in pro-
gramming key-pad. Particu-
larly recommended for dis-
playing the main electrical
variables.
Housing for panel mounting,
(front) protection degree IP65
as standard, and optional
RS485 serial output.
Energy Management
Multifunction indicator
Type WM12-96
Model
Range code
System
Power supply
Option
How to order
WM12-96 AV5 3 D XX
Type Selection
Power supply
A: 24VAC
-15+10%, 50-60Hz
B: 48VAC
-15+10%, 50-60Hz
C: 115VAC
-15+10%, 50-60Hz
D: 230VAC
-15+10%, 50-60Hz
3: 18 to 60VDC
Range codes
AV5: 380/660VL-L/5(6)AAC
VL-N: 185 V to 460 V
VL-L: 320 V to 800 V
AV6: 120/208VL-L/5(6)AAC
VL-N: 45 V to 145 V
VL-L: 78 V to 250 V
Phase current: 0.03A to 6A
Neutral current: 0.09 to 6A
Options
X:
None
S:
RS485 output
System
3 : 1-2-3-phase,
unbalanced load,
with or without
neutral
Rated inputs
Current 3 (shunt)
Voltage 4
Accuracy
(display, RS485) with CT=1 and VT=1 AV5:
(@25°C ±5°C, R.H. ≤60%) 1150W-VA-var, FS:230VLN,
400VLL; AV6: 285W-VA-var,
FS:57VLN, 100VLL
Current 0.25 to 6A: ±(0.5% FS +1DGT)
0.03A to 0.25A: ±7DGT
Neutral current 0.25 to 6A: ±(1.5% FS +1DGT)
0.09A to 0.25A: ±7DGT
Phase-phase voltage
±(1.5%
FS +1 DGT)
Phase-neutral voltage ±(0.5% FS + 1 DGT)
Active and Apparent power, 0.25 to 6A: ±(1% FS +1DGT);
Power factor 0.03A to 0.25A: ±(1% FS
+5DGT)
Reactive power 0.25 to 6A: ±(2% FS +1DGT);
0.03A to 0.25A: ±(2% FS
+5DGT)
Frequency ±0.1%Hz (48 to 62Hz)
Additional errors
Humidity ≤0.3% FS, 60% to 90% RH
Temperature drift ≤200ppm/°C
Sampling rate 1400 samples/s @ 50Hz
1700 samples/s @ 60Hz
Display refresh time 700ms
Display
T
ype LED, 14mm
Read-out for the instant. var. 3x3 DGT
Measurements Current, voltage, power,
power factor, frequency
TRMS measurement of
distorted waves.
Coupling type Direct
Crest factor < 3, max 10A peak
Input impedance
380/660VL-L (AV5) 1 MΩ±5%
120/208VL-L (AV6) 453 KΩ±5%
Current ≤0.02Ω
Frequency 48 to 62 Hz
Overload protection
Continuous voltage/current 1.2 F
.S.
For 500ms: voltage/current 2Un/36A
Input specifications
2Specifications aresubject to change without notice WM12-96 DS110806
WM12-96
Data (bidirectional)
Dynamic (reading only) System and phase variables
Static (writing only) All configuration parameters
Data format 1 bit di start , 8 data bit,
no parity, 1 stop bit
Baud-rate 9600 bit/s
RS422/RS485 (on request)
Type Multidrop
bidirectional (static and
dynamic variables)
Connections 2 or 4 wires, max. distance
1200m, termination directly
on the instrument
Addresses 1 to 255, key-pad selectable
Protocol MODBUS/JBUS
RS485 Serial Output Specifications
Displaying Up to 3 variables per page
3-phase system with neutral
Page 1:
VL1, V L2, V L3
Page 2: V L12, V L23, V L31
Page 3:
AL1, A L2, A L3
Page 4: An
Page 5: W L1, W L2, W L3
Page 6: PF L1, PF L2,
PF L3
Page 7: var L1, var L2, var L3
Page 8: VA L1, VA L2, VA L3
Page 9: VA ∑, W ∑,var ∑
Page 10: VAdmd, W dmd,
Hz
Page 11: Wdmd MAX
Page 12: VL-L ∑,PF ∑
Page 13: A MAX
Alarms Programmable, for the VL∑and
An (neutral current).
Note: the alarm is only visual,
by means of LED on the front
of the instrument.
Reset Independent
alarm (VL∑,An)
max: A, Wdmd
Password Numeric code of max. 3
digits; 2 protection levels
of the programming data
1st level Password “0”, no
protection
2nd level Passwordfrom 1 to 999,
all data are protected
System selection 3-phase with neutral
3-phase without neutral
3-phase ARON
2-phase
Single phase
Transformer ratio
CT 1 to 999
VT 1.0 to 99.9
Filter
Operating range 0to 99.9% of the input
electrical scale
Filtering coefficient 1 to 16
Filter action Measurements, alarms,
serial output
(fundamental variables: V, A,
Wand their derived ones).
Software functions
Auxiliary power supply 230VAC
-15 +10%, 50-60Hz
115VAC
-15 +10%, 50-60Hz
48VAC
-15 +10%, 50-60Hz
24VAC
-15 +10%, 50-60Hz
18 to 60VDC
Power consumption AC: 4.5 VA
DC: 4W
Power Supply Specifications
500VAC/DC between
measuring inputs and
RS485.
4000VAC, 500VDC between
power supply and RS485
Dielectric strength 4000 VAC (for 1 min)
EMC
Emissions EN50084-1 (class A)
residential environment,
Operating 0to +50°C (32 to 122°F)
temperature(RH < 90% non condensing at
40°C)
Storage -30 to +60°C (-22 to 140°F)
temperature (RH < 90% non condensing at
40°C)
Installation category Cat. III (IEC 60664, EN60664)
Insulation (for 1 minute) 4000VAC, 500VDC
between measuring
inputs and power supply.
General Specifications
Specifications are subject to change without notice WM12-96 DS110806 3
WM12-96
General Specifications (cont.)
Waveform of the signals that can be measured
Figure A
Sine wave, undistorted
Fundamental content 100%
Harmonic content 0%
Arms =1.1107 | A |
Figure B
Sine wave, indented
Fundamental content 10...100%
Harmonic content 0...90%
Frequency spectrum: 3rd to 16th harmonic
Additional error: <1% FS
Figure C
Sine wave, distorted
Fundamental content 70...90%
Harmonic content 10...30%
Frequency spectrum: 3rd to 16th harmonic
Additional error: <0.5% FS
commerce and light industry
Immunity EN61000-6-2 (class A)
industrial environment.
Pulse voltage (1.2/50µs)
EN61000-4-5
Safety standards IEC60664, EN60664
Approvals CE, UL, CSA
Connections 5(6) A Screw-type
Max cable cross sect. area 2.5 mm2
Housing
Dimensions (WxHxD) 96 x 96 x 63 mm
Material ABS
self-extinguishing: UL 94 V-0
Mounting Panel
Protection degree Front: IP65 (standard),
NEMA4x, NEMA12
Connections: IP20
Weight Approx. 400 g (pack. incl.)
Display variables in 3-phase systems (in a 3-phase system with neutral)
No 1st variable 2nd variable 3rdvariable Note
1 V L1 V L2 V L3
2VL12 VL23 VL31 Decimal point blinking on the right
of the display
3 A L1 A L2 A L3
4 An AL.n AL.n if neutral current alarm is
active
5 W L1 W L2 W L3 Decimal point blinking on the right
of the display if generated power
6PF L1 PF L2 PF L3
7VAR L1 VAR L2 VAR L3 Decimal point blinking on the right
of the display if generated power
8 VA L1 VA L2 VA L3
9VAsystem Wsystem VAR system
10 VAdmd Wdmd Hz dmd = demand (integration time
(system) (system) (system) selectable from 1 to 30 minutes)
11 W dmd MAX Maximum sys power demand
12 V LL system AL.U PF system AL.U= is activated only if one of
VLN is not within the set limits
13 A MAX
max. current among the three phases
Display pages
4Specifications aresubject to change without notice WM12-96 DS110806
WM12-96
Wiring diagrams
Used calculation formulas
ARON connection
3CT and 3VT connectionCT connection
Fig. 3
ARON and VT connection
NOTE: the current inputs can be connected to the lines ONLY by means of current transform-
ers. The direct connection is not allowed.
ATTENTION: Only one ammeter input can be connected to earth, as shown in the electrical dia-
grams.
2-phase connection
[1] [2] [3]
1-Last instrument
2-1...n Instrument
3-SIU-PC
4-wire connection
Fig. 4
Fig. 2
Fig. 1
Fig. 5 RS485 serial connection Fig. 6
Instantaneous apparent power
Instantaneous reactive power
System variables
Equivalent 3-phase voltage
3-phase reactive power
Phase variables
Instantaneous effective voltage
Instantaneous active power
Instantaneous power factor
Instantaneous effective current
3-phase active power
3-phase apparent power
3-phase power factor
Neutral current
An = AL1+AL2+AL3
Specifications are subject to change without notice WM12-96 DS110806 5
WM12-96
1. Key-pad
To program the configuration parameters and the display of
the variables.
Key to enter programming and confirm selections;
Keys to:
-programme values;
-select functions;
-display measuring pages.
2. Display
LED-type with alphanumeric indications to:
-display configuration parameters;
-display all the measured variables.
▲
▲
▲
▲
S
Front Panel Description
1
2
Dimensions and Panel Cut-out
96mm
91mm
61.4mm
15.4mm
96mm
96mm
