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
High voltage distribution equipment: high voltage fuse; high voltage isolation switch; high voltage load switch; high voltage circuit breaker.
Q:What is the difference between power supply and distribution
The two is the integration of power generation and power supply.
Q:Distribution system equipment classification
Electronic equipment - named meaning, is mainly composed of electronic components
Q:Rural high voltage transmission line equipment ownership
High voltage transmission line, one end of the power plant (power), the other end of the number of users in the use of electricity, of course, the current
Q:Transmission lines are not electrical equipment?
Transmission lines are not electrical equipment? The answer is: the device is a function of the assembly
Q:AC distribution equipment including distribution box
Connect the power supply, transformer, converter and other equipment for load distribution box, and monitoring
Q:What is the power equipment in the distribution room?
High voltage distribution room generally refers to the 6kV - 10kV high voltage switch room; low voltage distribution room is generally refers to the 10kV or 35kV station with variable line 400V distribution room
Q:What are the general requirements for working on distribution equipment?
When the high voltage line is not cut off, the person in charge of the work shall explain to the whole staff that there is electricity on the line and strengthen the monitoring
Q:What are the two power distribution equipment?
Such as generator, transformer, circuit breaker, isolating switch, bus, power cable and transmission lines, etc..

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