Subaru Robin RGX3600 - Manual (Page 23)

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4-4 MEASURING INSULATION RESISTANCE
Use a “Dr. Robin” generator tester in megger tester
mode or use a megger tester to check the insulation
resistance. Connect a megger tester to one of
receptacle output terminals and the ground terminal,
then measure the insulation resistance. An insulation
resistance of 1 megohm or more is normal. (The original
insulation resistance at the time of shipment from the
factory is 10 megohm or more.) If it is less than 1
megohm, disassemble the generator and measure the
insulation resistance of the stator, rotor and control
panel individually.
STATOR
Measure insulation resistance between each terminal
from the stator and the stator core.
Measured insulation resistance of 1M ohm or
more is normal.
If it is less than 1M ohm, leakage current and
electric shock might occur due to faulty insulation.
Replace with new one.
CONTROL PANEL
With AC circuit breaker turned on, measure insulation
resistance between each portion of electrical parts
and earth (grounding) terminal or control panel itself.
Measured insulation resistance of 1M ohm or
more is normal.
If it is less than 1M ohm, leakage current and electric
shock might occur due to faulty insulation.
Replace with new one.
Any part where the insulation resistance is less than 1M
has faulty insulation, and may cause electric leakage
and electric shock.
Replace the faulty part.