TO AC RECEPTACLE
Fig.
Use a circuit like the shown in Fig.88 for measuring AC output. A hot plate or lamp with a power factor of 1.0 may be used as a load. Adjust the load and rpm. and check that the voltage range is as specified in
Table | - |
|
| |
Rated voltage | 1lOV | 120v | 22OV | 240v |
Voltage range |
Table
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.
lSTATOR
(1)Measure the insulation resistance between BLUE lead and the core.
(2)Measure the insulation resistance between WHITE lead and the core.
(3)Measure the insulation resistance between YELLOW lead and the core.
(4)Measure the insulation resistance between BROWN lead and the core.
MEGGER TESTER
\
n
Fig.
Fig.
- 46 -