Interested to Buy Any Domain ? << Click Here >> for more details...
A group of machines (wind turbines) connected with 33KV
feeder and each machines are having individual VCB. The 33KV
feeder connected with 110KV/33KV substation. The 33KV feeder
tripped by over current at Substation and fault recorded at
Substation as OC-R&Y phase. Same time the group of machines
VCB tripped by over voltage, the fault recorded voltage was
above 66KV by numerical Under/Over voltage relay. While grid
drop time, this much of voltage hike is possible?
- 1 Answers
- 3476 Views
- I also Faced
- E-Mail Answers
Answer Posted / k.prakashchandra
The load throw-off may result in run-away speed being equal
to twice the normal speed ,hence the voltage may also become
twice. Over voltage relay should be set at not more than
120%.You can employ the AVR so that the voltage does not
increase with the speed.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
What is CCM in Electrical ? where can we use this material?
Two bulbs of 100w and 40w respectively connected in series across a 230v supply which bulb will glow bright and why?
Show the schematic arrangement of diesel power station layout and give its principle of operation.
What is a dominant pole?
Why CBCT rating is 50/1A
What is primary and backup protection?
CT Ratio of a energy meter connection is Red Phase : 100/5A, yello Phase : 50/5A & Blue phase : 100/5 A what is the overall Multiplication factor
Can you used moeller lzm1 mccb in a dc system with 125vdc and 20ka short circuit current , beside is it have 24 or 48 volt shunt ? Beside how long current can through from An MCB shunt contacts? (like Z7-AS 24 V)?
Power Factor Correction Panel (Manual & Automatic)
What is meant by vector group
Can anyone provide with a SLD for HT panel installation for a 33KV line and distribution end has three 1.5MV transformers. Is it suitable to use OCB or VCB and also provide me the suitable rating and its connection diagram.
How can eliminate noise problem inside temperature controller temp. variation due to contactor chattering problem.
What is the limitation of kirchoffs law?
how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?
What is Anemometer used to measure?
