why rating in KVA and KVAR?

4 Answers  

---

what is the procedure to carry out BDV test of a transformer ?

3 Answers   BirlaSoft,

---

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  

---

1.what is the reason for transformer and lightning arrester blast in 33kv system

0 Answers   ABB,

---

how do you find making current and breaking current of the circuit breaker

1 Answers  

---

---

Difference between 3.5 core and 4 core

2 Answers  

---

RATING OF LIGHTENING ARRESTER FOR 11 KV LINE IS 9 KV BUT WE KNOW THAT LIGHTENING ARRESTER IS USED FOR OVER VOLTAGE PROTECTION SO WHY NOT THE RATING OF LIGHTENING ARRESTER BE MORE THAN 11KV ???????????????//

5 Answers   Hakel,

---

what will happen if we use cylindrical conductor instead of flat cu conductor in transformer

2 Answers   Crompton Greaves,

---

What is the operating range(tolerance) of voltage and frequency of grid supply in india?

10 Answers   BARC,

---

How RTCC works with OLTC

1 Answers   Siemens,

---

22kV HT incoming should be 3 phase or 4 phase? why is it not 4 phase?

1 Answers  

---

Which Current transformer will be bigger in size, 400/5 or 400/1 & why?

2 Answers   Apollo,

---