Answer / arup

ZONE 0 --Areas in which an explosive gases atmosphere (An
explosive gas air mixture) is present continuously or
present for long time.
ZONE 1---An area in which explosives gas atmosphere is
likely to occur in normal operation.
ZONE 2--An area in which an explosive gas atmosphere is not
likely to occur in normal operation and if it does occur,
it will exist for a short period only.

TRANAFORMER RATING 500 KVA,33KV/433, SECONDARY SIDE SWITCHED ON ONLY CAPACITOR LOAD 140 AMS, PRIMARY SIDE HOW MUCH VOLTS INCREASE?

1 Answers   BPL,

---

WHat is the general checks required for Dry type transformers

0 Answers  

---

How i can calculate current of cable according to ares?

0 Answers   Pharma,

---

How power cable & control cable can be differentiate from each other ?explain?

14 Answers   Aster, Finolex, TCE,

---

Why do not we prefer non conventional sources of energy to conventional sources?

0 Answers   Nabard,

---

---

detailed procedure how we calculate cost for pcc m10 and rcc m20 including centering and labour excluding steel/ iron

0 Answers  

---

what is the lemen of a single 5mm 13000mcd white led pls reply

1 Answers   Eskom, Sona,

---

Genreally distribution transformers are having Star/delta connections to provide phase and neutral to the consumers. Is the neutral of the star conncted secondary grounded in these transformers?

1 Answers  

---

What will be the voltage impact on secondary side of two transformers with different vector groups when both voltages are compared.

0 Answers   APTransco,

---

Hello, I am just preparing my self for a university interview and struck on the 11kv ring main unit system network. I just know that ring main unit has total three breakers, fuses and use to supply a power to any load/ building without any interrupt. But i am not be able to visualize the connections, either Ring main unit getting power from two different power sources? or there is always one feeder in complete ring circuit??? I would be highly thanks full of you help me.

1 Answers  

---

What will be the full load current of 60KVA UPS. Suggest for this formula.

8 Answers   ABC, Sodexo,

---

Which element is highly conducting coppoer or gold?

3 Answers  

---