Circuit arrangement for supervising the operational characteristics of an excess voltage arrester without spark gap

摘要

1. A circuit arrangement for monitoring the operating characteristics of a surge arrester (10) that does not incorporate any spark gaps, characterised by a capacitor (12) connected in series with the surge arrester (10) to lie between the arrester and an earth terminal, and a direct voltage source (14) connected across the capacitor (12) by a current meter (18) which is switched between the capacitor (12) and the direct voltage source (14).