Answer Posted / t ramesh

Dg sync is two or more Dg connected in parallel. But It's not changing the voltage phase sequence. Frequency, Then in case of power failure 1st
1st auto started the master Dg when this crossed the 80% of load then given the sense to PLC panel after started the 2nd DG and GVM panel check the that DG voltage after closed the breaker in auto condition. Then is sharing the load..

Why an ac solenoid valve attract the plunger even though we interchanges the terminal? Will the poles changes?

1214

---

why ups rating in kva? and why ups are in parellel?.why isolation transformer is used in ups?

1937

---

if the load is 80 amp for main fuse and 100 amp for breaker so how can we calculate the cable size (cooper ) .

2071

---

Why human body feel electric shock?

1073

---

What are stable systems?

1084

---

HOW TO CALCULATE S/C,O/C,E/F OF ACB.

2581

---

how to size H.T & L.T Panel ?

2131

---

Can Anyone suggest the Standards (IEC or IS) for selecting copper current density?

1399

---

how will we calculate the copper wire load..

1930

---

what is the difference between capacitive and resistive voltage divider?

3526

---

what is meant by flywheel and its role in retardation test

2432

---

how works inductive &capacitive sensors?

1964

---

I Have 3 Phase 10 KW AC Alternator i found one phase weak, so what will be the reason & what action shouls i take to rectify the same.

2067

---

testing of Vector Group – YNaoD II

2927

---

What do you mean by ratio correction factor of instrument transformer?

1175

---