Answer / perwez

when there is a problem with the inventer or when v r are
doing any maintenance that time we bypass the supply, which
means the ups act's as direct supply , if there is power
failure in this case ups will not feed any power.

Answer / ramendra shukla

At the time of abnormal condition,testing or Maintenance
we can put our UPS as on Mannual By-pass mode.
it can also happens when By pass switch or auto control
operation has been failed.

Answer / sumit

for maintenance purpose
to bypass ups from main line

what is the meaning of knee point in current transformer and how to calculate?

2 Answers  

---

what is the name of oil used in transformer

11 Answers   Energy Pack, Genco,

---

Re: can you give main difference between ELCB 2pole And RCCB 2pole? And how this devices operated?

4 Answers  

---

why we use Test Terminal Block in 11 KV and 33 KV electrical panels.

0 Answers   EMC,

---

What is mean 2XWY

0 Answers   Wilo,

---

---

In A.C systems, fuse is placed in phase-in order to disconnect the circuit during faulty condition. But, what is the reason for putting "LINK" in neutral istead of connecting through (same) wire.

3 Answers  

---

difference between local breaker backup relay or backup protection relay ?

1 Answers  

---

Why Neutral Isolation is required?

0 Answers  

---

When generator connected, the circuit ELCB exploded. What is the reson?

3 Answers  

---

what is automatic voltage regulator and it is used?

2 Answers   HAL,

---

How to calculate the load loss and no load losses of the power Transformer? i am having the following details : full load ct : in AMP HV :1676 ; LV:31.5 1800 KVA ;33KV/620 V for wind mill applications

2 Answers   ReasonSoft,

---

what is the difference between Current transformer & Capacitive voltage transformer

2 Answers   ABB,

---