Explain working of PIU(Power Interface Unit) in
Telecommunication,
- 7 Answers
- 71827 Views
- ACME, ATC, Bharti, HCL, INDUS, Pace Pharmaceuticals, I also Faced
- E-Mail Answers
Answer Posted / jile singh
piu(power interface unit) convert 3 phase ac power supply in
230 volt ac with stablised and no surge and interference
effect. piu mostly used in telecom sector for providing ac
supply to all equipment used in shelter and also control dg
and consist a lot of protection and showing alarm indication
and record events upto 500.
| Is This Answer Correct ? | 224 Yes | 17 No |
Post New Answer View All Answers
Dear all, I just want to ask an expert on this forum for some insights. For the magnetic balance test, when applied voltage on a Delta-Star transformer e.g. Dyn11, the following relationships apply for HV side: 1. H1-H2 = H2-H3 H3-H1 2. H2-H3 = H3-H1 H1-H2 3. H3-H1 = H1-H2 H2-H3 For the LV side also: 4. X1-X0 = X2-X0 X3-X0 5. X2-X0 = X3-X0 X1-X0 6. X3-X0 = X1-X0 X2-X0 Is there a similar pattern for Y-d, Y-Y, D-d? And how about Y-z, D-z, Z-y transformers? I've tested a YNzn5 transformer and for LV side I don't see the pattern. In this particular case I got for LV side the following (see values below): H1-H0 H2-H0 H3-H0 X0-X1 X0-X2 X0-X3 128.0 119.9 7.2 29.2 13.3 15.8 70.7 128.4 59.2 23.4 22.0 3.6 7.2 120.1 128.1 13.4 29.3 15.8 What is the relationship here for LV? For row 1 I see the relationship, for row 3 I also see but it's shifted, but for row 2 I don't see such relationship. Any suggestions, answers, someone?
How to know any size of cable if there are not written on cable? Answer must be theurical not by experience.
EXPLIAN THE IMPORTANCE OF POLY PHASE CIRCUIT.
what is the minimum clearance between a 11KV 150KVAR capacitor cell and series reactor.can a series reactor can be mounted in the same structure of the capacitor cells structure
PLZ EXPLIN ABOUT CLASS PS CLASS CT .WHY THEY R DESINED AND FOR WHAT PURPOSE?WHY OTHER CT CANT BE USED AS PS CLASS CT? EXPLAIN IN SIMPLE LAUNGAGE IF POSSIBLE PLZ GIVE CIRCIT DIAGRAM?EMAIL-RAJ_SINGH_0376@SIFY.COM
What is ignition module of a CAT Gas Genset G-3508 Engine, Alternator SR4B Series. HOw its checked for correct functioning.Is it repiarable or replacable?
How energy is generated in hydroelectric power plant?
explain Density
Is there any standard guidelines/Criteria to design NGR/NGT.?
What is Antipumping Function & If we have C.T how we find the Ratio ?
what will happen if there is a voltage leakage or current leakage in an electrical train
george phenomenon of synchronous machine
in ACB breaker requireding 3200Amps. buscoupler getting OFF mode and again it reset and getting normal position give me a required answer?
what is the diff. between x'mer , isolation x'mer & ultra-isolation x'mer ?????????????
how we can calculate 2 phase welding transformer rating or total power?
