Mitsubishi Electric FREQROL HC Instruction Manual page 62

Item
Power supply voltage
V1
Power supply side current
I1
Power supply side power
P1
Power supply side power factor
Pf1
Converter output
Meter signal
Alarm signal
Note 1: Do not use a tester because accurate data will not be obtained.
* Values in parentheses indicate those for 400V class.
Measuring Points and Instruments
Measuring Point
Across R-S, S-T and T-R
R, S and T line currents
At R, S and T, and across R-
S, S-T and T-R
Calculate after measuring power supply voltage, power supply side current and power supply side
power.
P
1
- - - - - - - - - - - - - - - - -
Pf = × 100%
1
×
¥
3V I
1 1
Across P-N
Across FM(+)-SD
Across A-C
Across B-C
- 51 -
Measuring Instrument
Commercial power supply
Moving-iron type AC
170 to 242V (342 to 506V) 50Hz
voltmeter
170 to 253V (342 to 506V) 60Hz
Moving-iron type AC
ammeter
Electrodynamic type P
1
single-phase wattmeter (3-wattmeter method)
Inverter LED display is lit.
Moving-coil type 1.35 × V1
(such as tester) Max. 380V (760V) during
regenerative operation
Approx. 5VDC at max. frequency
(without meter)
Moving-coil type
(Tester, etc. may be used)
Pulse width T1: Adjusted
(Internal resistance:
with Pr. 900
50kΩ or larger)
Approx. 10VDC at maximum
frequency
(without frequency meter)
20 to 30VDC when open.
ON voltage: 1V or less
Continuity check
Moving-coil type Across A-C:
(such as tester)
Across B-C:
Remarks
(Reference Measured Value)*
=W11+W12+W13
<Normal> <Fault>
Discontinuity Continuity
Continuity Discontinuity