Answer / masthan

types of bus bar -
1. rigid type
2. strain type
Busbar arrangements -
1.Single Busbar system
2.single busbar system with sctionalisation.
3.double busbar system with single breaker.
4.double busbar system with double breaker.
5.breaker and half scheme with two main buses.
6.main and transfer busbar scheme.
7.double busbar with bybass isolator.
8.mesh scheme (ring bus)

Answer / md. shahin azad

An aluminum or copper conductor supported by insulators
that interconnects the loads and the sources of electric
power in an electric power system. A typical application is
the interconnection of the incoming and outgoing
transmission lines and transformers at an electrical
substation. Bus-bars also interconnect the generator and
the main transformers in a power plant. In an industrial
plant such as an aluminum smelter, large bus-bars supply
several tens of thousands of amperes to the electrolytic
process. See also Electric power substation.


major types of bus bar
(1) Rigid bus-bars, used at low, medium, and high voltage

The rigid bus-bar is an aluminum or copper bar, which is
supported by porcelain insulators.

(2) Strain bus-bars, used mainly for high voltage

The strain bus-bar is a flexible, stranded conductor which
is strung between substation metal structures and held by
suspension-type insulators.

(3) Insulated-phase bus-bars, used at medium voltage

The insulated-phase bus-bar is a rigid bar supported by
insulators and covered by a grounded metal shield. The main
advantage of this system is the elimination of short
circuits between adjacent phases.

(4) Sulfur hexafluoride (SF6)-insulated bus-bars, used
in medium- and high-voltage systems

The sulfur hexafluoride-insulated bus-bar is a rigid
aluminum tube, supported by insulators and installed in a
larger metal tube, which is filled with high-pressure
sulfur hexafluoride gas.

According to size 3 types

* tubular bus bar
* solid bus bar
* flat bus bar

According to capacity 4 type

* Extra high voltage bus
* high voltage bus
* medium voltage bus
* low voltage bus

What is mean by powerfactor. What is the difference between leading and lagging power factor?

2 Answers   HCL,

---

generaly all power generating devices is expressed in KVA or MVA then why power ststion is expressed in MW

6 Answers  

---

why are u join ntpc

0 Answers   NTPC,

---

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

2 Answers  

---

1.what is the reason for transformer and lightning arrester blast in 33kv system

0 Answers   ABB,

---

Transmission through a short line depends on

0 Answers  

---

WHAT ARE THE EFFECTS OF SERIES RESONANCE AND PARALLEL RESONANCE ON THE CIRCUITS PARAMETERS?

0 Answers  

---

fuel-air ratio in a petrol engine fitted with suction carburettor,operating with dirty air filter as compared to clean filter will be

0 Answers   NIC,

---

what is bus pt and what is the function of it

2 Answers  

---

Conventionally, capacitors are considered to generate reactive power and inductors to consume it,how??????

1 Answers  

---

How to calculate Battery back up time for a 400 AH Battery bank having a load of 20 Amps and charging time required to fully charge this battery bank?

2 Answers  

---

What is restricted earth fault protection ?

1 Answers  

---