what is TPN
Answers were Sorted based on User's Feedback
Answer / asif mansoori
As for SFU is concerned, TPN will mean triple pole with
Neutral. For MCB, MCCBs, TPN will mean a 4Pole device with
4th Pole as Neutral. In TPN, opening & closing of the
device will open & close the Neutral. While in SFU,
Neutral doesn't automatically opens or closes as it does in
case of MCBs or MCCBs. In MCBs & MCCBs, protection is only
on Three poles & Neutral is just a isolating pole. For
application where TP MCCB or MCB is used in 3ph4wire
system, it is denoted as TP+N which will mean a three pole
device with external neutral link which can be isolated if
required.
| Is This Answer Correct ? | 78 Yes | 5 No |
Answer / eknath
T.P.N. is a type of s.f.u. triple pole unit with nuetral.
| Is This Answer Correct ? | 64 Yes | 5 No |
Answer / vikram singh
TPN means tripple pole + neutral....in case of MCB only, TPN
is call 4 Pole also....but in case of SDFU, MCCB, ACB etc
TPN means 3P+N, which means that 3Pole SDFU, MCCB ACB etc is
taken and nuetral busbar runs as 4th pole with it
| Is This Answer Correct ? | 20 Yes | 6 No |
Answer / nick j
TP&N in Switchgear when reffering to a switch, MCCB,ACB, Disconnector means triple pole device with fixed neutral link
which Isolatable by removing the link in the neutral
4 pole means all poles of switch open when operated
| Is This Answer Correct ? | 10 Yes | 5 No |
what is ALF and ISF in current transformer?
why secondary of transformer always grouded?
what is meant by flywheel and its role in retardation test
What is the role of Dedicated earthing in UPS System?
How will polarity test of Dy5 Transformer ?
AIR GAP IS TERMED AS USEFUL. WHY?
Does dry and oil transformers both require dedicated neutral, because in my project we are using 2500kv dry star delta transformer, where they say neutral not required and even it is not provided in our substation. can u let me know
how do you test tachos and servos
we have a lot of model of rectifier but thyristor rectifier is the most rectifier that use in power system. Do you know why this rectifier is used?
Which Machine u will prefer to use at a place where flammable gases are coming out & why ?
ho w to make Incident and accident reporting
what is difference between 5A and 100A CT constructional wise and operation?
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)