OVERLOAD RELAYS, STARTERS TESTING, …

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OVERLOAD RELAYS, STARTERSTESTING, installation & trouble & SUREL&T SWITCHGEAR30SAFE & SUREL&T SWITCHGEARESPSERVICEMANUALOVERLOAD TEST1m1mDUT1m1mFROM CURRENT SOURCE'NC' CONTACTOF RELAYConnections of Thermal OVERLOAD Relay for O/L TestingTESTING OF THERMAL OVERLOAD up the following data of relay under ) Relay Type _____________________ b) Relay Range ____________________c) Max. Back up fuse rating continuity of auxiliary contacts and main ) Normally open __________________b) Normally closed _________________c) R Pole ________________________d) Y Pole _________________________NOTE : If the answer is to all above points then only take the relay for OVERLOAD the proper size of cable for connection. In case of smaller size of cable or improper termination, relay may trip all three poles of relay in series as shown in the following proper size of cables. Length of cable should be one normally closed (NC) contact of relay in series with test panel's auxiliary contact.

overload relays, starters testing, installation & trouble shooting. safe & sure l&t switchgear

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