GIS 72.5 -550kV

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Product Description:

Specifications

           80% of the power frequency withstand voltage
the leak rate is low
high operating reliability
good safety performance                

Introduction :
Release time :
2012-8-22 Product Description: Product role With 72.5 ~ 550kV GIS Current Transformer, sulfur hexafluoride gas insulation, mainly used in power systems power measurement, current measurement and relay protection.
Product structure

Features
1, insulation stable: 80% of the power frequency withstand voltage under the partial discharge amount not greater than 5pC.
   2, the leak rate is low: annual leakage rate of less than 0.3%, far better than the 1% of the requirements of the GB.
   3, high operating reliability: pressure SF6 gas zero table, safe operation can be a long time.
    4, good safety performance: explosion-proof device with excellent explosion-proof performance.
   5, high precision: measurement up to meet the 0.1 level.
   6 protection: protect the winding core of high permeability and saturation flux density is high (greater than 1.8T).
Technical parameters

Type

L (S) R-72.5

L (S) R-126

LR-220

LR-500

The devices rated voltage, kV

66

110

220

500

The * Device highest voltage, kV

72.5

126

252

550

Rated frequency Hz

50-60

* Short-time power frequency withstand voltage, kV

160

230

460

740

* Lightning impulse voltage, kV

350

550

1050

1675

Partial discharge level (1.2Um / √ 3)

<5pC

* Rated current, A

300-300

300-300

300-4000

600-5000

* Rated secondary current, A

5 or 1.

1

* Accuracy class (subject combinations)

0.2S; 0.2; 0.5S; 0.55P; 10P

* Rated output, VA

15-50

15-50

10-50

10-30

Safety factor, FS

5 or 10

* Accuracy Limit Factor, ALF

10-40

Short-term thermal stability current, kA / s

40/3

40/3

31.5-63 / 3

50-63/3

Rated dynamic current, kA

100

100

80-125

125-160

SF6 rated pressure (20 ° C), Mpa

0.4

A SF6 Buqi pressure (20 ° C), Mpa

0.35

SF6 gas leakage rate,%

<0.3

SF6 moisture content, μL / L

<150


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Q:What is the transmission line, what is the power distribution equipment
Distribution equipment is generally referred to as the distribution lines and distribution substations (usually 35kV and below).
Q:Transmission system and distribution system
Transmission system is based on the power supply to the same level or lower substation for the purpose of the general voltage level higher (35KV or more)
Q:Difference between distribution voltage and supply voltage
Distribution voltage refers to the power to the end user when the transmission voltage, China's short distance distribution voltage is 10KV.
Q:High and low voltage distribution equipment
High voltage distribution equipment: high voltage fuse; high voltage isolation switch; high voltage load switch; high voltage circuit breaker.
Q:Are electric wires and cables belong to distribution equipment?
Wire rod products for the transmission of electric (magnetic) energy, information and electromagnetic energy conversion.
Q:What is the role of transmission system and distribution system in power grid
The distribution of power resources and power load centers in most countries in the world is inconsistent.
Q:Distribution system equipment classification
The equipment can be used not only in the iron and steel industry, but also in the chemical and metallurgical industries
Q:Transmission lines are not electrical equipment?
Transmission lines in the power transmission project belongs to the carrier, belonging to the power cable category, should not be called equipment
Q:What are the distribution network equipment
Electricity and other energy sources, its main features are: cannot be stored in large scale, power generation, transmission, distribution and consumption at the same instant
Q:CHINT group in the transmission and distribution equipment to do it?
The national grid is not purchasing some equipment of CHINT, CHINT group is now very powerful

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