MCB MCCB ACB VCB

1 Answers  

---

what is residuel magnetism. and how order lead acid batteries for 24 volt. emergency lighting system.

0 Answers  

---

How can we get a Neutral from a three phase suply? If we meet all three phases at a point to take neutral then why dont thay get sparked?

1 Answers  

---

dear all, in motor operation , motor is of 100 hp and bimetal relay setting is 130 amp, if relay is getting tripped on 120 amp balance current what can be the reason? Relay is newly replaced. I dont know but is there any frequency effect in thit case? Can frequency variation affect bimetal relay operation?

1 Answers  

---

Am using an electronic digital display to see the RPM of ABB ACS 550 drive, which is showing negative value when the motor & drive in stop mode but it is showing correct value during the run mode. can anyone help me out??

2 Answers   Bala Power Solutions,

---

---

Scott connection is used for A 3-phase to 2-phase conversion B to achieve higher effciency C to save copper D to reduce harmonics

0 Answers  

---

why not use capacitor in Dg sets.

10 Answers   Birla,

---

Can we parallel two grid with different incoming voltage. Ex.let say one grid is 132kv and another is 220kv.

2 Answers  

---

what is power factor ? how we can calculate the low power factor and amount of capacitor for improve that low factor ?

0 Answers   AB, JLL,

---

what is the role of reactive powerin transmission and distribution?

3 Answers  

---

Why the earth terminal pin is larger than phase and neutral in three pin plug top>

8 Answers   TVS,

---

How many electrones need to flow in one second to equivalent to one Ampere.

3 Answers  

---