Insulation Tests; No-Load Current Value - Hitachi DH 40SR Service Manual And Technical Data

Mounting diagram

9-6. Insulation Tests

On completion of disassembly and repair, measure the insulation resistance and dielectric strength.
Insulation resistance: 7 MΩ or more with DC 500 V Megohm Tester
Dielectric strength: AC 4,000 V/1 minute, with no abnormalities .................. 230 V
AC 2,500 V/1 minute, with no abnormalities .................. 110 V

9-7. No-load Current Value

After no-load operation for 30 minutes, the no-load current value should be as follows:
Voltage (V)
Current (A) (Max.)
110 230
6.4 3.1
Case (B)
Control circuit ass'y
(include noise suppressor)
Housing
Lead wires of switch and
cord
Tab
Lead wire of stator
Lead wire of noise
suppressor
Tail cover
Fig. 23
--- 26 ---