6
MEASURING CURRENT ON UG CABLES & IN PADMOUNT ENCLOSURES
Secondary voltage cables are generally unshielded and current can be easily measured
by placing the Ammeter completely over the secondary cable or cable bundle so that all
cables are completely inside the U on the HVA High Voltage Ammeter.
Primary voltage cables are generally shielded and the Ammeter cannot measure current
on a shielded cable except in areas where the shield has been removed. Current can be
measured where primary voltage cables are terminated, generally in a vault or padmount
enclosure, as long as the Ammeter is placed on the cable just above the termination where
the shield wires have been terminated. The Ammeter can be placed over small drain wires
but the cable shield wires should not go inside the U of the HVA High Voltage Ammeter.
CARE & MAINTENANCE
STORAGE -
It is recommended for protection of the HVA High Voltage Ammeter that it is
stored in the carrying case provided.
CLEANLINESS -
The molded housing is very rugged, but it should be kept clean and
free of dirt, grease and any other foreign materials. If the housing surface
integrity has been compromised in any way, remove from service and
return to factory for repair or replacement.
CLEANING INSTRUCTIONS -
To clean, wipe with a damp cloth with water.
Do not use harsh chemicals or solvents.
DAMAGE -
If you suspect any mechanical or electrical damage, do not use
and arrange for repair by returning to the factory.
CALIBRATION & TESTING -
Calibration service is available at the HD Electric factory.
SERVICE -
Return to HD Electric Company for service.
