Philips PM 5326 Instruction Manual page 104

CHECKS AFTER REPAIR AND MAINTENANCE
Checking the protective leads
The correct connection and condition i s checked by visual control and by measuring the resistance be-
tween the protective-lead connection at the plug and the cabinet.
The resistance should be
<
0.5 ! 2
.
During measurement the mains cable should be moved. Resistance
variations indicate a defect.
Checking the insulating resistance
Measure the insulating resistance at U-
=
500 V between the mains connection and the protective lead
connection. For this purpose set the mains switch to ON. The insulating resistance should be
>
2 M
a.