Interested to Buy Any Domain ? << Click Here >> for more details...
How to Calculate Stc Rating of an indoor type VCB Panel?
What is a full form of STC?
- 1 Answers
- 14251 Views
- ABB, I also Faced
- E-Mail Answers
Answer Posted / vipul parmar
STC Means Short time current. it s calculated from transformer Impedance.
there are difference stc rating like 18.3ka ,26.3ka ,31.4ka ,40ka.
Electrical Power Systems in industrial plants are designated to serve loads in a
safe and reliable manner. One of the major considerations in the design of a
power system is adequate control of short circuits.
Three-phase short circuits usually produce the highest magnitude of current the
power system equipment must be able to withstand. Phase to ground short
circuit currents might occasionally be higher than three-phase short circuits
currents in systems with multiple-point solid neutral grounding. In general,
power systems in industrial facilities, which employ single-point solid grounding
or resistance grounding, require only a three phase fault current calculation to
determine current magnitudes for proper fault interrupter application and for
protective device coordination studies. However, this study considers also the,
phase to phase, phase to ground and phase to phase to ground short circuit as a
reference.
| Is This Answer Correct ? | 1 Yes | 2 No |
Post New Answer View All Answers
How to calculate no of EARTH PIT? Describe the formula as per IS standard?
How to Calculate Current Rating of SDFU (Switch Disconnector Fuse unit) for Protectionof Capacitor Bank connected to Busbar of 800Amp,in LV side of 11/0.433KV, 250KVA Transformer?
What is DC series motor?
suri transmission
with help of neat sketch explain principle of TIG welding process
why the earth is taken minimum in supplying? wather it the proportional factor to getting work any equipment or a power plant?
I am a electrical engg. diploma holder,applied for junior engineer (electrical),Kolkata RRB. Have I to attend all electrical,mechanical&civil portion in written exam.???
What si the d/f b/w KVA & KWH, kvarh & kvar, kwh & kvar phase voltage & line voltage
how to compare with Relay settings for HT< panels, RMU panel, and PSS CSS transformer?? 1) Load amps, 2)Tripping time, 3) CT ratio, 4)Cable size 5) Transformer KVA rating 6) transformer full load amps
Explain about 3 phase motor fault current calculation with examples?
What are the advantages of autotransformer?
what is meant by re-rolling motor? how it differs from standard motor?
I am abt to give IOCL intrv.Plz sir guide me for IOCL intrvw (Electrical).Which subject to be consider. questions are generally asked from which subject.Plz help me out.
What should be the amps for a MV fuses for transformer 630kVA 20(10)/0.4 kV
How to design the no. of ceiling fans required in 5mtr X 10 mtr X 3 Mtr hight room?
