What is a spark test?

A spark test is an inline voltage test used either during cable manufacturing or during a rewinding process. Spark testing is primarily for low voltage insulations and medium voltage non-conducting jackets or sheaths. The test unit generates an electrical cloud around the cable which in high-frequency AC units appears as a blue corona around the cable. Any pinholes or faults in the insulation will cause a grounding of the electrical field and this flow of current is used to register an insulation fault.

Spark testers are usually fitted with counters indicating the number of faults. Different spark test voltages are applied which are determined by the cross-sectional area of the conductor and insulation material, with the appropriate voltage specified in the relevant cable standard.

One of the leading players in the industry; Relemac Technologies Pvt. Ltd. presents a precision-engineered range of products to the user. Reckoned amongst trustworthy electrical cable manufacturers in India, we offer a wide variety of products including house wiring cables, submersible cables, LAN cables, coaxial cables, PTFE cables, XLPE cables, PVC cables, aerial bunched cables, flexible control cables, instrumentation cables, telecommunication cables, fibre optic cables, fire resistant cables, rubber cables, thermocouple compensating cables, etc. With our excellence in this domain, we have marked our presence among the leading industrial cable manufacturers / power cable manufacturers in India. Being a client-centric firm, we provide bespoke solutions meeting elevated industry norms.