OCEM IRM, Operation And Maintenance Manual

Page: 23 / 32

ADJUSTMENTS AND
MAINTENANCE
UT-MT-0930_1.3_220421 (EN)
Operation and Maintenance Manual
IRM
23
4 ADJUSTMENTS AND MAINTENANCE
After completing the installation, close the device with the key.
Only now is possible to close the upstream cut-out to supply the device.
4.1 Preliminary operations
If the device is equipped with a local cut-out, rotate it in ON position.
When the device is ONLINE (series circuit powered) the system periodically performs the measure of the leakage
current: the meter applies a voltage of about 800 V
DC
to an end of the series circuit by measuring the leakage
current to the ground.