SEV Electrical Equipments offer Spark Testers. These are designed to test the insulation of wires/cables so as to maintain the quality of wires and cables at extrusion level. The testers are available in two models, 15 kV and 25 kV. Specifications: input - 240 V 50 Hz, 1 phase AC; output - 0-15 kV AC 50 Hz (15 kV model) or 0-25 kV AC 50 Hz (25 kV model); HV transformer - oil cooled type housed in a fibreglass tank; electrode - ball chain type for 100% contact; sensitivity - as per clause A-2 (appendix A) of IS 18010 (part 44) 1984; interlock - HT chamber door interlock; fault indication - by lamp, audible alarm; fault counting - by six digit electromagnetic counter; and enclosure - control unit - 19" rack system, HT chamber - in MS casing provided with MS stand. The design of SEV spark tester meets the requirement as laid down in IS 10810 (Part 44) 1984.