Answer / ashokkumar

No it is because of Arcing.

Answer / jijo

Ngr is using fault current reduced and flow to ground

Answer / sourabh

Grounding resistors or
reactors are often used in medium voltage systems. These
current limiting devices are connected in series with the
transformer secondary neutral. In the event of a phase-to-
ground fault, the current will flow through, and be limited
by, the neutral resistor or reactor.If a phase-to-ground
fault occurs on any phase cable it will cause fault current
to flow back through
the earth, from the earth into the remote ground, then back
through the grounding resistor to the transformer
neutral.

Answer / engr. abdul barek

NGR: Neutral Grounding Resistance

NGR or grounding transformer using in MV voltage and Soild grounding is using in High & low voltage level as per standards.

Answer / revathi

In resistance grounding the phases connected to ground
through resistors. it resists the excess flow of current
and trip the circuit.

over frequency is the protection of turbine or alternator?

2 Answers  

while doing high voltage test on 11kv/433 distribution transformer why we only give 28 kv on hv side and 3kv on lv side for power transformers what is the value what factors it depends

0 Answers   Enercon,

why total tape position are odd in number in Power transformer ?

1 Answers  

a solar energy installation utilizes a three phase bridge converter to feed energy into power system through a transformer of 400v/400v.the energy is collected in a bank of 400v battery and is connected to converter through a large filter choke of resistance 10ohms.1.the maximum current through the battrey will be.2.the kva rating of the input transformer is.

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what happen as when voltage drop(or may decrease) ? in case of atomic base theory?

0 Answers  

when neutral will carry the current?what could be the magnitude?

7 Answers   Voltas,

What is a LBB protection and why it is used?

2 Answers   Gridco,

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1 Answers  

what is the difference between circular wdg & ractangular wdg?

0 Answers  

is it necessary for 200 kva transformer to have marshaling box and cu plate earthing for neutral

1 Answers   Blue Star,

how to give earthing in plain?

0 Answers  

HOW TO CALCULATE THE APFC Panel Design

1 Answers