Answer / arulg83

FM 200 is heptafluropropane (HFC 227) this is clean agent used for the fire protection in the critical areas like Data centre,computer room ,art gallery etc

This stores in a cylinder in liquid form upto 6 bar pressure
when fire alarm triggers after 30 sec it will release in the vapor state

this having ODP(ozone depleting Potential ) zero

Answer / sandeep.sekharan@yahoo.com

The cylinder storage pressure varies upto 42 bar based on size of the cylinder.
The time delay can be adjust to a maximum of 60 seconds.

difference bewteen reverse current and alternating current

1 Answers   ABB,

---

capacitor is load free component but why ampare meter shows the current when the capacitor bank breaker close?

4 Answers   OPS,

---

How can a transformer test by megger?

1 Answers   Bosch,

---

Multi-step core is used in transformer to: A) Increase the output B) Decrease the cost of core material C) Decrease the cost of copper D) Increase the efficiency

1 Answers   Accenture,

---

photo conductive cell

4 Answers   Bhel,

---

Is Transol transformer oil comparable to nynas nytro libra?

1 Answers  

---

What is the de rating factor of cable? What is the importance of the de rating factor in cable selection?

1 Answers  

---

In Energy meter How many rotation Equal to one unit.

3 Answers  

---

What is Electrical Grade Aluminum for Tubular BusBars. i am confused between 6063 and T6 or T5 and what is BS 2898 and BS 159?

1 Answers  

---

in the case of 6.6kv motor starter combination contain fuses on it VCB. but in 11KV motor starter combination Fuses are not using in it's VCB why?

1 Answers  

---

what is the significance of tan delta testing?explain the theory?

7 Answers  

---

why some transformer without breather.

1 Answers   GTS,

---