Answer / bhagavatsinh

synchronization is the process where voltage , frequecy, and phase angle must be same. but in parelleling it differ in acceptable tolerance. I.e. you can parrellel a two transformer which have a voltage 11kv and 11.5 kv and freguency 49.80 Hz and freguency 50.20Hz and phase angle according to vector group

Answer / gunasekaran

synchronising means gen is connected to grid.
parallel means two gen are connected between them

Answer / manickam.v

synchronization means conecting the machinecs (Generators.
Transformers etc.,)with the existing large network(
grid ).parallel means concting the machinecs (Generators.
Transformers etc.,)with another machines in a small network.

What is C curve and D curve of MCB?

3 Answers   GMR,

---

why the carbon brushes are used heat created rotating parts in eiectricity

1 Answers  

---

how to wiring it with contactor and timer together

0 Answers  

---

whats relation b/w motor current & friqency

1 Answers  

---

HOW MUCH MAXIMUM CURRENT TAKEN BY NEAUTRAL IN 125 KVA DG SET

1 Answers   KOC,

---

How to calculate earth flat size for 250 Kva DG and transformer?

8 Answers   Deepak Fertilisers,

---

In an ACB shunt trip coil and undervoltage coil operated normally( breaker open and charged). But closing coil not operating untill manually discharge and recharging. Any help.

0 Answers   PPIL,

---

If DG runing time Neutral earth connection Dissconect what will be the effect in load and equipments.

3 Answers   GE, HP, Reliance,

---

State the difference between Surge Arrester and Lightning arrester,Both are same or not?

7 Answers  

---

If cvt is most advance & effective(economically & stability)so why not use instead of VT(11 kv & 33 kv)?

3 Answers  

---

How to find Cable size? Caterpillar generator produce (Two generators) 127*2=254 amp at 11 kv . What would be the cable size (XLPE) to supply 256 amp at 11 kv? Air or surrounding Temperature is 32 degree C. Cable will go under ground at 2.5 feet depth. Group Rating Factors is 3 cables. Clearance between cables is 7 cm. Soil Temperature (Ambient) 28o C Soil Thermal Resistivity is 1.2 K.m/W I would like to use 3 separate single core instead of using 3 core cable. Some says I should use three separate single core 120RM cables. Some says 70RM .some says 95. I m totally confused. Is there ant specific rule to determine cable size? What would be the LT cable size to flow 500 Amp current? Ifte My e mail address is ifte13@yahoo.com Anyone please send me the answer to my e mail address, i will be very glad.

1 Answers  

---

what is trip circuit supervision relay? How does it work in switchgear?

6 Answers   Radha Regent Hotels,

---