CHAPTER 1: OVERVIEW
SPECIFICATIONS
PQM POWER QUALITY METER – INSTRUCTION MANUAL
1–13
1.3
Specifications
1.3.1
PQM
Specifications
CURRENT INPUTS
CONVERSION:
true rms, 64 samples/cycle
CT INPUT:
1 A and 5 A secondary
BURDEN:
0.2 VA
OVERLOAD:
20
×
CT for 1 sec.
100
×
CT for 0.2 sec.
RANGE:
1 to 150% of CT primary
FULL SCALE
150% of CT primary
FREQUENCY:
up to 32
nd
harmonic
ACCURACY:
±0.2% of full scale or 1 amp
VOLTAGE INPUTS
CONVERSION:
true rms, 64 samples/cycle
VT INPUT:
direct or VT ratio 1.0 to 3500.0:1
BURDEN:
2.2 M
Ω
INPUT RANGE:
20 to 600 V AC
FULL SCALE:
150/600 V AC autoscaled
AT VTinput
≤
150 VAC, full scale is 150 VAC
AT VTinput > 150 VAC, full scale is 600 VAC
FREQUENCY:
up to 32
nd
harmonic
ACCURACY:
±0.2% of full scale or 1 volt
TRACE MEMORY TRIGGER
INPUT
2 data cycles (current, voltage)
TIME DELAY:
0 to 30 cycles
TRIGGER LEVEL PICKUP ACCURACY:
OVERCURRENT:
±
2% of full scale
OVERVOLTAGE:
± 2% of full scale
UNDERVOLTAGE:
± 3% of full scale
SAMPLING MODES
SWITCH INPUTS
TYPE:
dry contacts
RESISTANCE:
1000
Ω
max ON resistance
OUTPUT:
24 V DC @ 2 mA (pulsed)
DURATION:
100 ms minimum
SAMPLE
S/CYCLE
INPUTS
SAMPLED AT A
TIME
DURATION
(cycles)
METERED
VALUES
64
ALL
2
TRACE
MEMORY
16
ALL
continuous
HARMONIC
SPECTRUM
256
1
1
Содержание Multilin PQM
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