Earthing device for HV testing of telephone cables - has earthing ribbon on spring reeling mechanism inside housing on arm with clamping shells

摘要

An earthing device for a cable tester used in HV testing of telephone cables has a holder (2) within a housing (1) and there is a spring reeling mechanism (3) with an earthing ribbon (4) rolled around it. It passes over a roller (5) and emerges from opening (6). The ribbon is typically a 14-wire flat cable soldered to a copper ribbon. The earthing contact is a capstan-head screw. The housing has an arm (12) with clamping shells (13). ADVANTAGE- Inexpensive universal earthing device