Answer / dnt

The trip circuit extends beyond the relay enclosure and
passes through more components, such as fuses, links, relay
contacts, auxiliary switch contacts and so on, and in some
cases through a considerable amount of circuit wiring with
intermediate terminal boards.

These complications, coupled with the importance of the
circuit, have directed attention to its supervision.The
relay use for supervision called supervision relay.

Answer / mohan

tripping relay supervision is also known as master trip relay
its relay code is 86 its command make the circuit breaker to
release the contacts it is one of the main relays used in electrical circuits

If the t/f capacity is 500KvA then what is Amps ratting of the main breaker.

5 Answers  

---

What is the difference between a Distribution Transformer and a Power Transformer.

4 Answers  

---

why crgo core is used in transformers?

6 Answers   Bhel, TATA,

---

What are the basic & Majour problems in UPS ?

0 Answers   Roto Power, RotoPower,

---

I am going to appear RRB Sr. Section Engineer Exam, Electrical. Can you send me previous year questions of RRB Electrical engineer. specially Section Engineer questions. my email id is likerahulworld@gmail.com

0 Answers  

---

what is use of thermistor ?

2 Answers  

---

Don't you have similar question banks related to Oral Certification Examination conducted by Mercantile Marine Departments / Directorate of Shipping, Ministry of Shipping for Electro Technical Officer?

0 Answers   Bernhard Schulte Shipmanagement,

---

what is current check gurd relay?

0 Answers   MRF,

---

Why transformer making noise during the operation?

2 Answers   TCS,

---

can you explain the rms value in simple words....

5 Answers  

---

Why current flows in nutral? As per theory there should be no current in 3 ph explain.

11 Answers   Bhel,

---

how we calculate electrical load on a building according to area?

0 Answers   HFCL,

---