Internal Wiring; Insulation Tests; No-Load Current Value - Hitachi H 41SD Service Manual

(1) Wiring diagram for products without a noise suppressor
A
Armature ass'y
(2) Wiring diagram for products with a noise suppressor
A
Armature ass'y
Upon the completion of disassembly and repair, measure the insulation resistance and dielectric strength.
Insulation resistance: 7 M or more using a 500 VDC megohm tester
Dielectric strength: 4,000 VAC/minute, with no abnormalities
2,500 VAC/minute, with no abnormalities
After no-load operation for 30 minutes, the no-load current values should be as follows:
Voltage (V)
Current (A) max.

Internal wiring

Stator ass'y
Connector or pillar terminal
Stator ass'y
Connector
Connector
Pillar terminal

Insulation tests

No-load current value

110 220
4.2 2.1
Switch
Switch
Noise suppressor
(220 to 240 V)
(110 V for U.K. products)
(110 to 127 V)
(Except for U.K. products)
230
2.0
-7-
Plug
Plug
240
1.9