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

why transformer do not rotate?

3 Answers  

---

types of central Air conditioner plant?

0 Answers  

---

What is the life of MCCB

1 Answers   Siemens,

---

dear friends plz send link about reluctance & universal motor .thank u

4 Answers  

---

Does the direction of rotation of d.c. Shunt motor would get reversed if the armature current and field current both are reversed?

0 Answers  

---

---

what is the procedure for three phase motor differential relay testing can it do with single phase test kit?

1 Answers   ABB,

---

Sir we are using 250 kva DG its Diesel consumption 25 lits / hrs maximum load 160 kva now how to calculate units/ litres

1 Answers  

---

What is the power ratio between power in Star and Delta circuit?

3 Answers  

---

WHAT IS MVA RATING OF KOTHAGUDAM THERMAL STATION POWER TRANSFORMER?

2 Answers   CESC, Power Grid,

---

Is earthing done for AC or DC or both?

6 Answers  

---

What is the secondry voltage of 420kV Current Transformer , the rated current is 2600A

6 Answers  

---

ROC converges if pole and zero lies inside a) origin b) z=1 c) pole d) zero ? Explanation please? if ROC does not converges then?

0 Answers   CCP,

---