Answer / sanjeet

isolation transformer is basically used 4,isolate between to
electrical ckts and the turns ratio is always 1:1.

Answer / zahid ali

Dear Friend
Isolation transformer is used between two circuits for
Galvanic isolation. It is used to prevent the damage on the
source circuits, Like PLCs, DCS etc. in case of field
circuit shorted.

Answer / afrooz

isolation transformer is used to ups from damaged if there
any fault in the feild

Answer / tariq

Isolation Transformer is used to block the DC components.
It has 1:1 ratio.There are many causes to produce/introduce
the DC components. If we do not block these components then
if may effect on the output. Isolation Transformer can be
used within in a single circuit. So, it is not correct that
the isolation transformer is always used to isolate the two
circuits.

Answer / sasi karthick a

Isolation transformers are used to isolate the two sides of
the system with respect to electrical and introducing a
transformer will bring down the short circuit fault level
because of transformer impedance.

Tats y lighting transformer are considered even though for
same level of voltages.

Answer / suppu

isolatin transformer is used for reduse the leakage current

Is it possible we are step down 11 kv to 230v ?

2 Answers   Fedco,

Please help me regarding my one concern. - During earth pit testing we noticed that the Clean earth pit and dirty earth pit showing continuity (Resistance value - 5ohm) . I want to know that if both earth pit have separate location and there is not internal looping between PIT then why such continuity is showing on it . Because of this issue the field side all earthing point showing short. In PLC panel we are providing two types of earthing cable which is coming from separate earth pit (Clean and Dirty earth pit) because of earth PIT showing short our PLC is not complying spec . please help regarding this issues.

0 Answers  

In india the power supply is always in multiple of 11, eg.220 V, 440 V... what is the reason?

11 Answers   BSES, Electrical, L&T, PSIT,

what is LT & HT?

6 Answers  

can we use heat gun instead of gas torch in 11kv termination kit. I mean can both sources provide enough amount of heat to ensure the uniform shrinkage of sleeve.

1 Answers  

what is the difference between between open delta and broken delta?

5 Answers   Reliance,

I have a question, I visit 01 site and face a problem, there is 2.5 ton Air Con working, when air con compressor is running at that time rectifier voltages are increasing upto 290-295 v and rectifier is giving main high alarm (rectifier is APC single phase, before starting compressor rectifier voltages was 230v. when air con is going off rectifier voltages are decreasing smoothly at its actual voltages 230v. Load on Genset phases is this: Red-13.5 amp AC (Air Con load), Yellow-1.7 amp AC (BTS lights etc.) and Blew-4 amp AC (telecom system load), Genset phase to phase and neutral to phase voltages are also ok. These are 10 sites having same system and same rectifier APC brand at every site 02 genset are working but the problem is same at all these 10 sites. What will be the reason behind???

1 Answers  

why inverter rating is in KVA

3 Answers   Alstom, JSW,

How wti of transformer works?

5 Answers   Vedanta,

lightning current is ac or dc..?????

7 Answers  

dear all, in motor operation , motor is of 100 hp and bimetal relay setting is 130 amp, if relay is getting tripped on 120 amp balance current what can be the reason? Relay is newly replaced. I dont know but is there any frequency effect in thit case? Can frequency variation affect bimetal relay operation?

1 Answers  

What is the resonant peak?

0 Answers