Answer Posted / s.p.p.pathirana

The perpose is connecting grid power to the power plant
generators for syncronized both the system such as
(volt,freqency,and phase sequence)generator or alternator
has coupled to the engine. according to the question that
motor will turn engine to the oposite derection and engine
may damaged. there for generator have protection system to
prevent this. its call reverse power protection. power
plant for support to the grid and have connected grid power
cable to the generators through individual there circuit
breakers. generator breaker cannot close with engine
standby mode. if this correct please try to understand.

ratings of lightning arrester

2038

---

How PSV sizing being done

2299

---

What is the height of DA, DAL, DB, DC & DDE tower?

2323

---

how to calculate energy of 3-phase motor?

2050

---

i want use the cable size 16cx4 core aluminium usege watts 240x2000w this cable size is correct?

2183

---

Why 1/3 is used in symmetrical components?

1823

---

Grid fault level [KA]?

2591

---

What difference between ref protection and differential protection ?

1832

---

what is the difference between 4pole & 6pole DC Motors & give advantage ?

1889

---

i am completed diploma in ece,and working in ht and lt lines.so is elligible diploma in ece for get electrical C Licence?plse give ur opinion?

1884

---

Why Neutral Isolation is required?

2213

---

Difference between transition and diffusion capacitance

2955

---

Write a note on materials used as a fuse element.

2109

---

What is K-rated transformer? What is the use of it? What can be the size(pls provide calculation if possible) of K- factor transformer for 550kW,690V motor operating with drive (VFD)?

2260

---

why we setting 95 deg and 105 deg in wti and oti of distibution transformer ? give the reson for that ?

3131

---