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SELECTION
GUIDE
M100-XA1 Single phase
M100-XA2 3 phase 3 wire
balanced load
M100-XA3 3 phase 4 wire
balanced load
M100-XA4 3 phase 3 wire
unbalanced load
M100-XA5 3 phase 4 wire
unbalanced load
M100-XA6 3 phase 3 wire
unbalanced load
M100-XA7 3 phase 3 wire
balanced load internally
reversed C.T.s
TYPICAL APPLICATIONS
The M100-XA series measure
reactive 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 reactive
power being measured.
Typical applications
include the measurement of reactive
power in switchboards,
power stations and generating sets
etc. The high isolation
of 4kV as with all the M100 series,
allows these VAr 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%.
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
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
/ <3W)
WEIGHT & CASE SIZE
M100-XA1,2,3,6,7 Approx.
0.6kg. 100mm case
M100-XA4,5 Approx. 0.8kg
100mm case
ORDERING INFORMATION
Product code I/P In Un
O/P Range Aux. Freq. Opt.
M100-XA4 400/5 400 0-20mA
300kVAr 120 60Hz
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