Answer / suthanprabhu

1.Body earthing
2.Neutral earthing
3.Winding Temperature
4.Over current protection
5.Over/Under voltage protection
6.Over/Under frequency protection
7.Earth fault protection
8.Reverse power protection
9.Loss of field protection

Answer / j.suresh

BODY EARTHING
NEUTRAL EARTHING
OVER CURRENT PROTECTION
OVER / UNDER VOLTAGE PROTECTION
OVER / UNDER FREQUENCY

Answer / indrajeet

1.Body earthing
2.Neutral earthing
3.Winding Temperature
4.Over current protection
5.Over/Under voltage protection
6.Over/Under frequency protection
7.Earth fault protection
8.Reverse power protection
9.Loss of field protection
10.Bearing Temperature
11.Loss of Exciation
13.Neutral current maxium.

Answer / uday

AVR

Answer / pradeep bhadouria

safety measure of alternator are
a) over current relay
b) over voltage and under voltage
c) reverse power relay
d) low frequency

Answer / maruthi

1.Body earthing
2.Neutral earthing
3.Winding Temperature
4.Over current protection
5.Over/Under voltage protection
6.Over/Under frequency protection
7.Earth fault protection
8.Reverse power protection
9.Loss of field protection
10.Bearing Temperature
11.Loss of Exciation
13.Neutral current maxium.

Answer / shanker

AVR,CT's, PT'S

Answer / rahul

Overcurrent trip
Overvoltage trip
Under voltage trip
Over frequency trip
Under frequency trip
Reverse power trip

Answer / munesh prajapati

avr
under/over voltage
reversr power

Answer / lohithkumar

RPR relay( Reverse power relay)
Over speed relay.(OSR)
Over/Under voltage protection
Bearing tepmerature relay. (BTR)
Winding temperature relary.(WTR)
Over current relay (OCR)
Auto voltage regulator relay.(AVRR)
Earth leakage relay.(ELR)
Low lube oil temperature relay.(LLO)
High water tempreature trip relay.(HWTTR)

why we use shunt in a rectifier system ?

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How the neutral earthing is connected in DG alternator

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We wish to test 60 Hz systems from a 50 Hz supply. To acheive frequency conversion, we use a VFD. The VFD powers 40 kVA transformer, which has motor and non-motor loads on it. Will the transformer work?

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