Answer / nur.asidik

differential/87G-need two sets of CTs, coverage are protection is only area between CT,
overcurrent/50,51--only need 1set CTs, Relay trip CB regardless fault location

Answer / raj

Differential protection relating to Voltage induced in the alternator with prescribed limit(In Common words. the protection circuit is used to trip the generator when over voltage is produced by the generator)
The over Current Protection is used on the output side( at terminal) of the generator ( when the load is exceed with limit of the alternator then it will trip the O/P ckt for safe limit of the generator

What is duty cycle and protection class?

4 Answers   SISL,

---

what is standard height of an energy meter from ground?

2 Answers  

---

1.why is +1+1=+2 why cant it be +3 2.Why is +1*-1=-1 why cant it be something else 3.why are the hilly areas more cooler than the ordinary areas?

5 Answers   ThyssenKrupp,

---

what is balanced beam relay

1 Answers  

---

how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

0 Answers   Schneider,

---

Why can we connect the mobile charger both ways?

2 Answers  

---

in our 6.6kv motor feeder[it is having two sources from Bus A&B] earth fault relay is acting, we checked CBCT connection and cable meggerd values found very good still earth fault acting during first two are three start after that it will hold. please clarify what was the reason. if same motor is starting from other Bus-A it will start.

1 Answers   Gasal, Voltech,

---

How can I calculate ISF of current transformer?

0 Answers   Cigniti Technologies,

---

why is one voltage transformers (instead of three ) installed at the entrence of the incoming line in a substation.

2 Answers  

---

what is quality factor in series resonance circuit and calculate the factor of voltage magnification? how it happens?

0 Answers   BARC,

---

How to calculate the Meter constant for the given Meter (by using any formula)

4 Answers   HCL, Viva,

---

WHY EXCITER PHASE SEQUENCE ARE OPPOSITE THAN STATOR SUPPLY PHASE SEQUENCE IN SYNCHRONOUS MOTOR >

0 Answers  

---