Atec Megger-MRCT - Manual (Page 4)

MRCT
Megger Relay and Current Transformer Test Set
DeSCrIpTIonS oF HArDWAre opTIonS
AnD ACCeSSorIeS
relAY TeSTInG opTIon
DeSCrIpTIon
The MRCT can be configured to include the functionality to test
electromechanical, solid-state and microprocessor based over-
current relays, including voltage controlled, voltage restraint and
directional over-current; test under/over voltage, single-phase
impedance, single-phase power, directional, synchronizing, auto-
synchronizing, negative sequence under/over voltage, current
balance, frequency, volts/hertz, reclosing, thermal and various other
relays
ApplICATIonS
The current channel is rated for 30 amps @ 200 VA continuous, up
to 60 amps @ 300 VA for short durations. It has a unique flat power
curve from 4 to 30 amps that insures maximum compliance voltage
to load at all times. With a high compliance voltage of 50 volts the
SMRT1 has the capability to test high impedance over-current relays.
The voltage channel can provide a variable output of 0- 30/150/
300 Volts at 150 VA of output power, and has a unique flat power
curve from 30 to 150 volts insuring maximum output power to the
load at all times. With the voltage channel converted to current,
it can perform minimum operating point, slope and timing on
current differential relays, including harmonic restraint transformer
differential relays (which can be tested one phase at a time).
relAY opTIon SpeCIFICATIonS
outputs All outputs are independent from sudden
changes in line voltage and frequency. This
provides stable outputs not affected by sudden
changes in the power source. All outputs are
regulated so changes in load impedance do not
affect the output.
output Current Output power ratings are specified in
AC rms values and peak power ratings.
Output Current Power
Max V / Duty Cycle
1 ampere 15 VA 15.0 V rms continuous
4 amperes 200 VA (282 peak)
50.0 V rms continuous
15 amperes 200 VA (282 peak)
13.4 V rms continuous
30 amperes 200 VA (282 peak)
6.67 V rms continuous
75 amperes 300 VA (424 peak)
5.00 V rms 90 cycles
DC 200 Watts
AC Voltage output Outputs are rated with the following Ranges:
Output volts power max I
30 volts 150 VA 5 amps
150 volts 150 VA (see Power V)
300 volts 150 VA 0.5 amps
DC 150 watts
Duty Cycle: Continuous
Metering Measured output quantities such as AC amperes,
AC Volts, DC volts or DC amperes, and time may
be simultaneously displayed on the large, color
TFT LCD, optional STVI touch screen. The AC
and DC outputs display the approximate voltage/
current output prior to initiation of the outputs.
AC Voltage Amplitude
Accuracy ±0.05% reading + 0.02% range typical, ±0.15%
reading + 0.05% range maximum
Resolution .01
Measurements AC RMS
Ranges 30, 150, 300V
AC Current Amplitude
Accuracy ±0.05% reading + 0.02% range typical,
±0.15% reading + 0.05% range maximum
Resolution .001/.01
Measurements AC RMS
Ranges 30, 60A
DC Voltage Amplitude
Accuracy 0.1% range typical, 0.25% range maximum
Resolution .01
Measurements RMS
Ranges 30, 150, 300V
DC Current Amplitude
Accuracy ±0.05 % reading + 0.02 % range typical,
±0.15 % reading + 0.05 % range maximum
Resolution .001/.01
Measurements RMS
Ranges 30A