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
As the name implies, the transmission is by the power plant or power center regional power grid (sending end), to the load center power grid (by the end) of the transmission of electricity; power distribution is to be distributed by the substation or bus power down.
Q:High and low voltage distribution equipment
Distribution equipment refers to a variety of power plants, substations and factories and enterprises in the low-voltage power distribution system for power, distribution and lighting of the complete sets of equipment.
Q:Main equipment of high voltage direct current transmission
Converter also known as converter valve is the key equipment in the converter station, its function is to achieve rectification and inverter
Q:What are the distribution network equipment
The transmission function of the power plants issued by the electricity to power consumption areas, or between adjacent grid power to send each other
Q:What is the role of transmission system and distribution system in power grid
The power load center is more concentrated in the industrial zone and the big city,
Q:AC distribution equipment including distribution box
Connect the power supply, transformer, converter and other equipment for load distribution box, and monitoring
Q:Are electric wires and cables belong to distribution equipment?
Distribution equipment (Electrical Equipment) is in the electric power system of HV switchgear, generator, transformer, power circuit, circuit breaker, low voltage switch cabinet, distribution board, switch box, control box and other equipment collectively.
Q:Difference between distribution voltage and supply voltage
A distribution within the cell, the high voltage side is 10KV, the low voltage side is 220V or 380V.
Q:What are the general requirements for working on distribution equipment?
Can be plugged into the elbow cable connector, not load operation.
Q:Transmission system and distribution system
Distribution system is the power supply to the distribution load for the purpose of the general voltage level of not more than 10KV

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