What is the Duty Cycle/Operating Sequence of Circuit Breaker specified on the Name Plate
We keep wondering what the heck this sequence on the name plate of the Circuit Brekaer. Lets find...
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Circuit Breaker Testing with Standard Test Results
There are following Commissioning Tests, Diagnostic Tests and Trials of Circuit Breaker. 1)...
Read MoreEverything about Circuit Breaker in Power System
Circuit Breakers is Protective Device used in Power System to make or Break the Circuit. Definition: CB is an Onload Switching Device, which can operate Manually for Controlling in Normal Conditions and Operate Automatically...
Read MoreTripping Circuit of 33 KV Outdoor GO VCB
There are two Tripping Circuits in the Breaker, Called a Trip Circuit 1 and Trip Circuit 2. Both this Tripping Circuits should have different DC Supply and different Tripping. Tripping Circuit of VCB can be divided into...
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Troubleshooting Circuit Breaker not Closing Electrically Problem in 33 KV Outdoor GO VCB
A very common problem in EHV Substations, Circuit Breaker not closing Electrically. The...
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Closing Circuit of 33 kv Outdoor Gang Operated Vaccume Circuit Breaker
There are following elements in the Closing Circuit: Closing Coil TNC Switch Closing Resistance NC...
Read MoreControl Circuit of 33 KV Outdoor Vaccume Circuit Breaker
Control Circuit can be divided into following Circuits: DC Supply to the Breaker Closing Circuit Tripping Circuit Indication Circuit Spring Charge Motor Control Circuit. DC Supply to the Breaker: There are different MCB’s...
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What is Local Breaker Backup or Breaker Failure Relay for Protection of Local end Breaker
Consequenses of a failed breaker: A Breaker can fail due to Electrical Problems such as Trip...
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What is the difference between Main Contacts and Auxiliary Contacts of circuit breaker
1.Main contacts (Power contacts): The main contacts of a breaker are used to Interrupt the flow of...
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Trip Circuit Supervision Relay Explained
1.principle of operation: Principle: A Continous Negative Voltage is given to one end of the...
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Circuit Breaker Antipumping Device
defination: AP is an Auxillary Relay used in the Closing Circuit of the Circuit Breaker for...
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