The KV5-100 MK3 Test Set is designed to test insulation systems and measures breakdown voltage on electrical components. It adjusts output voltage from zero to 5kV and accurately meters output voltage and current. An interlock energizes the output only when voltage control is zero.

Two analogue instruments meter output voltage and load current. Output voltage displays on a dual-scale marking of 0-3kV and 0-6kV. Load current has a 0-10 scale marking with selectable ranges: 0-10mA and 0-100mA.

An adjustable current trip, linked to the current metering range, safeguards the test object and output. The trip level is customizable from 20-120% in 20% increments. Audible and visible indications signal test object breakdown. The alarm requires manual reset before resuming testing.