I have a question, I visit 01 site and face a problem, there is 2.5 ton Air Co

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???

Question Posted / wap

1 Answers
3865 Views
I also Faced
E-Mail Answers

I have a question, I visit 01 site and face a problem, there is 2.5 ton Air Con working, when air ..

Answer / k.prakashchandra

Neutral- shift due to load

Is This Answer Correct ?

0 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

what is used root two in single phase line?

1 Answers DVC,

what will be efficient rating of ac motor to lift a 10 kg wt of stone to 10 meter height with input 220V AC 50 Hz frequency???

1 Answers

Why Earth pits are inter connected

8 Answers Airtel, Taj Group,

why substation ratings are multiple of 11 means 11\33 kv substation

6 Answers

Why we are using Isolation Power Transformer inplace of commercial power transformer? What's the difference between them?

0 Answers UPCL,

why the voltage transmission is always in a multiple of 11? e.g. 110 V, 220 V, 33 kVA, 11 kVA

16 Answers IAF, MahaGenco,

what sq.mm copper pvc wire need for ac load current 25amps for 230v ?

4 Answers Khadamat, Siemens,

WHAT IS LIGHTNING,HOW TO CALCULATE LIGHTNING DESIGN CALCULATION?

2 Answers L&T,

What are the insulation standerds for eg H clase and how many insulation standerds are there and its standerds??????

0 Answers

how to measure dc earth leakage current?

0 Answers

A motor works on 30 killo watts.how much ampers will be required if it works on 440volts?

5 Answers

If a transformer primary winding operates at 240v, the secondary at 120v and the load is 1500w & the transformer is rated at 92% efficient, what's the current flowing through the primary winding of the transformer? What is the formula for finding this?

0 Answers

For more Electrical Engineering Interview Questions Click Here