Hello sir
This is prakash from
bangalore i have a doubt why we have to
maintain DG power factor in the range
0.78 to 0.8
Perhaps i f it is increased means what
will happen in DG
Answer Posted / kj
DG's are usually rated at 0.8 PF lagging. There is no
issues with running the DG at another higher or lower
lagging PF. Usually the output kw of the engine is set at
80% of the kva rating. For example a 100 kva DG will have
an engine rated at 80 kw. This will al;low for a full load
current of about 140 amps at 0.8 PF. Increasing the PF
towards unity the maximum load current must be reduced
until it is about 110 amps otherwise the engine will be
overloaded. If the PF is reduced below 0.8 PF the maximum
current must not exceed 140 amps. This means the kw of the
load must be reduced. This is to stop the windings in the
alternator being burnt.
Going to a leading PF will cause voltage instability and
can cause damage to the alternator.
Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
PLS MENTION QUESTIONS ASKED IN IOCL INTERVIEW FOR ELECTRICAL EGG??
What are the site acceptance tests for power cables, DG Sets, LT panels & 30kVA UPS ?
How to select a cable size for particular load?
i have 500 amp inductive load of motors ,,,pleas tell me how can i calculate for capacitor bank for improving my power factor to 99 .....calcullations for capacitor bank,,,,
Why is ignitor used in sodium vapour lamp
What are the material used for resistor?
how to calculate differential current when we testing differential relay..suppose we have 1000kw generator,630amp VCB,what value we should put /inject so that relay trip the VCB? PLLZ justify ur comment
why we are not giving the zone 1 trip command to the master trip relay
what is the difference between electrical choke and electronic choke?
Is it acceptable of installing an earth pit in planters area where bare copper cable, earth rod and connection are susceptible to corrosion due to water?
Define peak overshoot.
What is the abbreviation of NGT panel
What kind of maintenance is conducted for Transformer
The power supplied to a 50mH inductor from a 120V, 60Hz source will be
substation+ plc system