A single line diagram(SLD) and a purchase order of a 11/66kV switchyard of a power plant was given. In the SLD, only one lightning arrestor(LA) was shown, but the purchase order had need of 3 LAs. Is this correct, if yes, why?

2 Answers  

---

galloping in transmission line is due to

2 Answers   DVC,

---

What is the purpose of Vector Group in transformer?

1 Answers   Andritz, ThyssenKrupp,

---

THE 40 MW OF POWER FOR 220 V III PHASE POWER CONNECTION REQUIRES HOW MANY KVA POWEER REQUIREMENTS

7 Answers   Chartered Accountant,

---

Which oil can be used in transformer?

1 Answers  

---

How to calculate the breaking capacity(like 15ka,20ka) of Circuit breaker (MCB,MCCB,ACB)

9 Answers   Career Excellent Sdn Bhd, Neona, Northern Max Engineering, Sps Renewables, Terasaki, UEM,

---

Whats the difference between three phase and single phase?

4 Answers  

---

How to calculate VCB rating for 33KV ,25 MW Power line?

0 Answers  

---

What is the differance between vacuum breaker and vacuume contactor

1 Answers  

---

What is switch disconnector fuse?

1 Answers  

---

WHY SPEAKER OUTPUT IN WATTS??

2 Answers  

---

what is impedance of transformer?

7 Answers   Synergy, Vijai Electricals,

---