what is the operation of Control Module(CM),MONITOR Module(MM), MONITOR Module DUAL (MM2),Signal Module(SM),Isolator Module(IM), please some one reply me.. the operation and application of these in FIRE ALARM SYSTEMS...

1 Answers  

---

IN 6.6KV 3 phase switch gear .i will give 6.6kv to R phase only to earth in during H.v testing (through H.v KIT).what happen remaining phases.how much voltage get remaining phases.why? explain.

1 Answers  

---

what is the purpose of measuring % impedence?

1 Answers  

---

MCB is used for high rating &MCB is used for lower rating.What is technical difference between ACB & MCB?

7 Answers  

---

What is meant by reactance voltage?

0 Answers  

---

what are the protection relays for trasformer

3 Answers  

---

I need the recommended size for a 3 phase transformer at 13.8 KV Primary and connected loads of 3000 kVA at 4200 volts and 2375 kVA @ 480 volts AC.

0 Answers   Duke Energy,

---

Why Batteries are rated as AH i.e AmpereHour,and its formula to converting AmpHour to Amp

4 Answers   Suzlon,

---

Has someone here done a sizing for a generator (3 phase), its for a pumping station. If you have an example for standby/duty and both running (I) star delta (ii) Soft Starter.

0 Answers  

---

Advantages of Induction Motors

2 Answers  

---

what is Aircraft earthing and what does it do?

6 Answers  

---

what is the differnce b/w voltage and current

8 Answers   Steel Plant,

---