difference between isolator and circuit breaker?????
Answer Posted / dharmesh
Circuit Breaker is a device which can
Make or break circuit under normal conditions either manually or through remote control.
and
Isolator or Isolating Switch is a device which is used to disconnect a part of the system for maintanance purpose and repairs.Isolator can open a circuit under no load condition only.If two isolators are connected on either sides of circuit breaker,then the circuit breaker must be opened before opening the isolators.
After perfoming maitanancee work on the circuit breaker,isolators must be closed first and then the circuit breaker must be closed to bring the system into operation.
Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
When lag/lead/lag-lead compensation is employed?
1.What will be stored in online ups EPROM IC?
1.What is captive power plant? 2.What is national grid?Give brief idea.
What are the roles and responsibilities of electrical engineer in cement plant
excitation limit of an excitor
please anybody help me to find out the BHEL trainee Exam previous year questions papers . if u ve pls. send it to surekhared@gmail.com
why only exciting current is shown not primary current in transformer???
Draw the wave shape of armature current in a generator subjected to a sudden three phase short- circuit at its terminals. Define various reactance of generator from this wave shape.
How to megger test 11 kV cable and the acceptance IR value
1. transformer design formula ? 2. how to calculate the primary turns and secondry turns ? 3. core types ? 4. how to find the primary current and secondry current ? 5. how to calculate the stacking factor ? 6. range of fulx density ?
Post possible questions for Power Factor Panel FAT / SAT
what ispositive, negative, zero sequence impedence?
how can you size an automatic voltage regulator?
What is transmittance?
We are planning to synchronized DG's with our captive plant in the event of black start of plant, but before sync we checked voltage of DG with our plant voltage and it varies from 5 V to 450 V. So in this condition how we can sync DG with plant ?