• GIS 72.5 -550kV System 1
  • GIS 72.5 -550kV System 2
  • GIS 72.5 -550kV System 3
GIS 72.5 -550kV

GIS 72.5 -550kV

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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


Q: What are the two power distribution equipment?
The two equipment is the equipment for the control, protection, monitoring and measurement of the work of the primary equipment.
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: DC transmission equipment
Simply put, DC screen is to provide stable DC power supply equipment.
Q: What is the power equipment in the distribution room?
which is mainly used for the distribution of the electric energy of the low-voltage users, and the utility model is provided with a medium voltage input line (a small number of outlets)
Q: What is the difference between power supply and distribution
The problem is you estimate from the injection test out the electric power, is the power system of power plant and the national grid is responsible for part of the design, the design of power plant and power lines, its design must be designed by a qualified electric power design institute
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: High and low voltage distribution equipment
Low voltage distribution equipment: low voltage distribution panel, switch cabinet, switch board, lighting box, power box and motor control center.
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: Rural high voltage transmission line equipment ownership
the transformer can be what, look at the role of electrical appliances can be
Q: CHINT group in the transmission and distribution equipment to do it?
Really is the leader in the domestic electrical industry!

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