Product overview

XGN□-24(SF18-24) gas insulated high voltage AC metal enclosed switchgear (SF6 gas cabinet) is a new generation of stainless steel fully enclosed gas-filled switchgear produced by advanced welding, gas filling and leak detection technologies. All its live parts are sealed in a stainless steel housing filled with SF6 gas, and the gas box and fuse barrel all reach IP67 protection level. The modular design is compact and can be freely combined and expanded, and the combined electrical unit and circuit breaker unit can be configured. The products are widely used in the construction and transformation of urban power grids, suitable for the ring network power supply and terminal power supply of various power distribution systems, and also suitable for pre-installed substations and switching power stations. It has the characteristics of full closure, maintenance-free, tight structure and high reliability.

 

　　Product Notes

Note:

1. The relevant parameters of the circuit breaker unit depend on the parameter value of the circuit breaker itself;

2. The relevant parameters of the combined electrical unit depend on the parameter value of the fuse.

 

　　Main technical parameters of products

 

Project

Parameters

Project

Parameters

Rated voltage kV

24

Rated short-time power frequency withstand voltage (fracture) kV

79

Rated current A

1250

Rated lightning impulse withstand voltage (fracture) peak kV

145

Rated frequency Hz

50

Classification level according to mechanical life

M2

Rated short-circuit breaking current kA

25

Classification level according to electrical life

E2

Rated short-circuit closing current kA peak

63

Classification level according to opening and closing capacitive current capability

C2

Rated short-time withstand current duration s

4

Rating of auxiliary contacts

2

Rated short-time withstand current kA

25

Switching operation voltage V (maximum/rated/minimum)

AC242/220/187

Rated peak withstand current kA peak

63

Opening operating voltage V (maximum/rated/minimum)

AC242/220/143

Rated cable charging breaking current A

25

SF6 gas rated charging pressure (gauge pressure at 20C) MPa

0.045

Rated line charging breaking current A

10

SF6 gas minimum functional pressure (gauge pressure at 20C) MPa

0.02

Rated short-time power frequency withstand voltage kV

65

Rated lightning impulse withstand voltage kV peak

125