(3) Measurement of Resistive Leakage Current (Ior) & Insulation Resistance (M
Ω
)
CAUTION FOR MEASUREMENT
●
This instrument measures insulation resistance at live line and sometimes, the
measurement values may get different form ordinary insulation resistance
testers.
●
The voltage inputs for the measurement of circuit insulation resistance are
different according to single phase / 2 wires, three phase / 3 wires and three
phase / 4 wires. Refer to the wiring systems and use the instrument correctly.
●
Also, be careful that the wiring system is different according to the kind of motors.
●
Pay sufficient attention to the wiring in case of measurement of Ior (M
Ω
), as the
instrument regards phase factors of current & voltage. Also, the current
measurement cannot be done if mistaking the frequency setting, as the phase
factors are changed.
△
! WARNlNG
●
Do not apply more than AC500V to voltage input terminal (
～
V INPUT).
It may cause the damage.
POSSIBLE ELECTRICAL SHOCK
●
The test leads are consumption articles. Before connecting to the instruments,
confirm that there are no damage at the insulated coating of test leads. If you
found any unusualness, immediately stop the operation and repair or change to
new ones.
POSSIBLE FIRE HAZARD AND BURN ACCIDENT
●
Connect the test leads firmly. The connection error may cause the spark.
●
Do not apply the voltage more than 10V to CT INPUT terminal absolutely.
- 12 -
