what is the meaning of Ring Mean Unit in a substation or
trasformer also tell me its oerpuse?
Answer Posted / hesham
RMU IS used to feed the transformer from two different feeders within ring
1- TRM ( two incomer and one outgoing feeding only one transformer 2+1 )
Or ( 1+2 ) one incomer and two outgoing feeding two S/S.
2- QRM ( 2+2 ) two incomer and two outgoing feeding two transformer
or ( 1+3 ) one incomer and three outgoing feeding three s/s.
| Is This Answer Correct ? | 19 Yes | 5 No |
Post New Answer View All Answers
How to test Alternator stability test for REF relay
In DC generator, we use commutator, having no. of segments. Then how it is possible to get a half wave of voltage and current for half rotation of armature?
What is meant by load angle of an alternator? Upon what factors does the load angle depend?
can we choose current transformer secondary, to calculate residual flux in a power transformer, so as its saturation is close to the saturation level of power transformer?
Please explain me about Relay curves and their sources to read ?
please give me all the Alarm .Trip ,Safety Relays & Conditions of Diesel-generators mail me on ashokbabunhce@gmail.com
i am going to correct power factor of 1600kw induction motor,when i calculate capacitance of capacitor it is three time more in star connection than delta. if motor is star connected which connection i shall adopt for capacitors and reason for adopt this connection
iam using DM 3251 voltmeter(1 percent accuracy)for 11KV system PT ratio is 11KV/110V.can anybody explain what is the max and min voltage deviation.
what is control supply rating of a machine
can i use 2000/5A Clamp meter to measure HT cable
sir i am apearing for nic exam.i dont know exam pattern.can you please send me some model papers
3 shows a 415 V, 3-phase generator supplying a 3-phase 415/110 V transformer. Draw the individual and combined impedance diagrams to a base of 10 kVA. Determine the system fault kVA and the fault currents at the 415 V and 110 V busbars for short circuit faults on the transformer input or output terminals. Work in p.u. values of impedances.
What will happend if given Vfd out put to step up transformer
What is called limb of a transformer?
how to select proper cable for ct wiring so that drop within the limit.