Specifications

Hardware Functions
In-Out
Performances
The best to suit your needs!
96x96x124mm (WM4); 90x90x140 (PQT)
Graphic, LCD back lighted (WM4 only)
YES (WM4); NO (PQT)
WM4: Sel: 4x3
1
/2 DGTs or 4x4 DGTs
PQT: 4 DGTs format
4x9 DGTs (total), 4x6 DGTs (partial)
V
LN
-A: ±(0.5 RDG+1DGT)
Hz: ±0.1% F.S. THD: ±1% F.S.
Class 1 (EN61036), Class 2 (EN61268)
≤200ppm/°C
10 times/s
Bal.: 1-3 phase; Unbal.: 3-phase
Autoranging 240/415VAC, 400/690VAC
Autoranging 1/5AAC
Up to 6 independent for time period
synchronization, Gas and H2O meters
Prog.: CT up to 30,000A; VT up to 600kV
TRMS method
Sys: V
LN,VLL, An, W, var, VA, PF, Wdmd, vardmd,
VA
dmd,PFdmd, Hz, Wh, varh, gas, H2O.
Single-phase: VLN,VLL, A, W, var, VA, PF, THD.
THD and single H up to the 50th H (V, A)
Up to 4 (open collector or relay)
Up to 4 (open collector or relay)
Up to 4 (5, 10, 10mA; 1, 5, 10VDC) PQT only
RS485 and RS232. (Modbus); Ethernet
(WEB-server); Modem-GSM management
Action: on variables and outputs
Real time clock with alarms and variable
recording (2Mb memory); Min/Avg/Max
recording (PQT only) energy time period,
gas and H
2O management; official watt-
hour meter interface.
18 to 60VAC/DC, 90 to 260VAC/DC
CE, cURus, CSA
WM4: IP65, NEMA4x, NEMA12. PQT: IP20
Housing (H x W x D)
Display type
Variables on display
Instantaneous variables
Energy variables
Accuracy
Temperature drift
Refresh rate
System type
Voltage inputs (Un)
Current inputs (In)
Digital inputs
Primary of CT/VT
Measurements:
Variables
Harmonic distortion
Outputs: Pulse
Alarm
Analogue
Serial
Digital filter
Other characteristics
Power supply
Approvals
Protection degree
WM4 96 is an Universal Utility meter and Power Quality
Analyzer and PQT 90 is a transducer having the same fea-
ture. These high-tech instruments have been developed to
meet the most advanced application needs. WM4 96 and
PQT 90 offer to the user many advantages and solutions
that can be summarised in:
• Quick assembly and maintenance using Plug and Play
modules.
• Load failure prevention: harmonic analysis (A/V) with
source detection and control; up to 4 alarms for a
powerful variable control; alarms logging and data
stamping.
• Remote control facilities: up to 4 pulse outputs, RS485
port and RS232 port (Modbus RTU), WEB-server
module.
• Load profile to keep supply costs under control.
• Energy cost allocation with independent import/export
and multi-tariff active/reactive energy meters.
• Water and gas metering and communication using the
same instrument.
Comm
Modular Universal Utility Meter WM4 96
Modular Universal Utility Transducer PQT 90
RS232 serial communication port
provided with a 2Mb data memory.
32
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By AR1060 WEB server module (page 36)
WM4 96 PQT 90
PQT 90
P
Q
T90