Nelster Welcon manufactures Test Terminal Blocks. Nelster Welcon is an ISO-9001: 2008 certified company. The Company also manufactures relay test blocks, relay test plugs, semaphore indicators, relay test systems & plugs, changeover switches, by pass changeover switches, air break switches, gang operated switches etc. These Test Terminal Blocks have rugged construction and high electrical strength.
The Test Terminal Blocks offer convenience in, in-situ testing / calibration of electromechanical and electronic poly-phase integrated meter protective relays etc, without disrupting the existing load circuit housed in a high grade phenolic moulding with integrally moulded barriers and offer ample protection against flash-over between terminals. All terminals in the Block are made of high quality brass and duly Nickel plated with 3.40 mm hole for cable entry. These Test Terminal Blocks have M3 screws for clamping. The Test Terminal Blocks with rear connection have M4 brass studs at the rear. These Test Terminal Blocks have sealing hole provided on the cover securing knobs and studs thereby preventing unauthorised access. The voltage terminals of these Blocks have shorting links and colour coded moulded knobs for operational convenience. Each group of current terminals consist of three terminals with interconnecting screws or links [depends whether screw or link type] for injecting current from a portable test set or to short circuit current transformer secondaries. These Test Terminal Blocks have optional extended top cover and transparent top cover and comes with rated voltage and current up to 600 V and 50 A respectively.
