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SELECTION
GUIDE
M100-WA1 Single phase
M100-WA2 3 phase 3 wire
balanced load
M100-WA3 3 phase 4 wire
balanced load
M100-WA4 3 phase 3 wire
unbalanced load
M100-WA5 3 phase 4 wire
unbalanced load
M100-WA6 3 phase 3 wire
balanced load externally
connected reverse C.T.s
M100-WA7 3 phase 3 wire
balanced load internally
reversed C.T.s
TYPICAL APPLICATIONS
The M100-WA series measure
active power in single, 3 phase
3 or 4 wire balanced
and unbalanced systems. Using the time
division multiplier circuit
means that they can be used over a
wide range of input waveforms.
The D.C. Output signal is directly proportional to the instantaneous power
being measured.
Typical applications
include the measurement of power in switchboards, power stations, generating
sets etc. The high isolation of 4kV as with all the M100 series, allows
these watt transducers to be connected to a variety of measuring and control
devices and systems, such as analogue meters, PLC, computers, data loggers,
digital instruments and telemetry systems.
Both auxiliary powered
and self powered versions of each type are available, it is recommended
to use an auxiliary powered version if the system being measured has voltage
variations in excess of ± 20%.
ORDERING INFORMATION
Product Code I/P In Un
O/P Range Aux Freq Opt.
M100-WA5 800/5A 230v
0-20mA 600kW 230v 50Hz
OPTIONS
1. Non standard inputs
/ outputs only as far as technically
acceptable.
2. A.C. Auxiliary in
range 57.7 to 450 volts
3. Calibration at nominal
Hz 35.....450Hz
4. Calibration at temperature
other than 23°C
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TECHNICAL
SPECIFICATION
INPUT
Rated value In 1 or 5
Amp C.T. connected
0.5-10 Amp direct connected
Rated value Un 57.8 <
600 volt
Power consumption <1
VA voltage
<0.2 VA current
Working range 0-125%
Un auxiliary powered
75-125% Un self powered
0-150% In
Rated Frequency 50 /
60 / 400 Hz
Frequency influence 0.005
% / Hz
Overload continuous 4
x In 1.5 x Un
Overload for 1 sec. 50
x In 2 x Un
OUTPUT
Rated value mA 0-1/5/10/20
& 4-20mA
Rated Value Volts 0-5
/ 10 & 1-5 V
ADJUSTMENT
Zero ± 2%
Span ± 10%
AUXILIARY
A.C. Voltage 115 / 230
/ 400 V (± 25% / 45-65
Hz / < 2VA)
D.C. Voltage 24 / 48
/ 110 V (± 20% /
galvanically isolated
/ <3 W)
WEIGHT & CASE SIZE
M100-WA1,2,3,6,7 Approx.
0.6kg. 100mm case
M100-WA4,5 Approx. 0.8kg.
100mm case
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