India
1. DC HV Proof Test Set
2. Cable Fault Locator (Bridge Type) with Built-in HV Power Supply, 2.5 / 5 KV
3. DC Fault Buner
4. DC HV Proof Test cum Fault Burner & Surge Generator
5. Thyristor Thumper
NTPL was founded in the year 1975 by Prof. Manindra Nath Basu Ray, better known as Prof. M. N. Ray, eminent Applied Physicist, after he retired from the Department of Applied Physics, Calcutta University.
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