define IDMT relay?
- 15 Answers
- 88982 Views
- APGenco, Bhel, L&T, Shriram Finance, I also Faced
- E-Mail Answers
Answer Posted / swati saxena
The term is generally used to describe relay (electrical switchgear) characteristics. IDMT relays have such tripping characteristics that, for a particular range of low values of current the tripping time varies inversely with the value of current. But beyond a certain current limit the tripping time becomes constant(definite) and causes tripping in minimum time. Hence the name Inverse/Definite Minimum Time. This type of characteristic is found in Over current Relays.
| Is This Answer Correct ? | 5 Yes | 0 No |
Post New Answer View All Answers
if we give 60 hz single phase supply to the transformer used in europe , than what will happen
HOW CAN YOU CALCULATE PRACTICAL EFFICIENCY OF A ASYNCHRONOUS INDUCTIONMOTOR OF 7.5KW,& MOTOR IS RUNNING WITH AVOLTAGE OF 410 VOLTS,& TAKING CURENT OF 13 AMPS
What is the maximum No. of out going mccbs permitted from an LV distribution paqnel? What is the ampere relation between incomer and out going switch gears/mccbs?
What is pd controller?
what is servo motor and how to work it.
high voltage transformer input voltage,current and amps rating..distributed transformer input voltage,current and amps rating...
why lightning arrestor are made in two stack of insulator but why not cvt
What is the operating principle of turbo-generator.
WHY IN AC DRIVES,INPUT PHASE CURRENT SHOW UNBALANCE?
What is the main purpose of c.f.b.c.boiler
What is difference between isolator and circuit breaker?
What is the difference in calculating size of AC cables compared to calculating size of DC Cables? Usually DC Cables are larger than AC Cables although they have the same ampacity. Why is it?
why we are using earth pit in sub stations.?
How to calculate the External Resistance required for 60HP slipring motor in case no any data of the Motor is available???
A 3-PHASE TRANSFORMER IS USED TO STEP-DOWN THE VOLTAGE OF A 3-PHASE, 11KV FEEDER LINE. PER-PHASE TURNS RATIO IS 12.FOR A PRIMARY LINE CURRENT OF 20A, CALCULATE THE SECOUNDRY LINE VOLTAGE, LINE CURRENT AND OUTPUT KVA FOR FOLLOWING.A)STAR- DELTA.B)DELTA-DELTA.
