Can someone explain how does an IDMT relay works.
- 1 Answers
- 2572 Views
- AFM, I also Faced
- E-Mail Answers
Answer Posted / poorvalingam
Its also called inverse relay. consider disk type induction relay. you set the over current setting 70% means this disk will pickup above this setting.consider if 85% of load going the disk will rotate and trip the circuit. if the load is 110% that time the disk operate very soon then previous case, it trip very quickly.
The operating time inversely proportional to the fault current this type relay called Inverse Definite Minimum Time Lag relay (IDMT)
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
HOW WORK HEAT PLATE EXCHANGER
In hydel power plants, L.A's, S.C's are placed inside the control panel boards. what is the purpose? [already the total body was earthed to ground.]
List advantges of active filter over passive filter?
how to find the multiplication factor for digital energy meter and analog energy meter
If we use 250A MCCB as a incomer in Control panel for a fault level of 50kA for one second ,assuming temperature rise from 85 Deg. to 100 Deg , Then what will be the Aluminium Bus-bar size for 250A MCCB? Explain in detail.
What is advantages of VSCF wind electrical system?
What is the meaning of loop in transformer
pls,send the previous year written test questions.
what is there inside an inverter and how it works?
Explain cos(theta) and Sin(theta)
how can check the resistance of battery contact?
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
what is mean by NPS (Negative phase sequence)fault? what is the difference between EFR & OCR faults?
How can I calculate per unit (KWH) fuel (Gas/ Diesel both) consumption 1MW unit?
How are load losses and no-load losses measured at site in a DG set?
