Vacuum Circuit Breaker Cubicle, SF6 Gas Insulated RMU

Specifications

1.Modular indoor high voltage RMU
2.KEMA type test, IEC standards
3.Extensible or not
4.For incoming/outgoing circuit

GLX24 series SF6 Ring Main Unit is an estensible SF6 insulated siwtchgear, with rated voltage of 12&24kV. All its HV live parts are contained in an air-tight gas tank, which is made from stainless steel of 3mm. The whole switching assebly is SF6 insulated, and free from any external influence, ensuring it great reliability of service and maintenance free. By plug-in type busbar extension,

 

GLX24 series RMU can be of free combination and full modularization. The busbar extension has passed type test for power and thermal stalility, and is fully insulated and shielded, exhibiting high reliability and safety.

 

GLX24 series Ring Main Unit is suitable for all MV network up to 24KV, all compact power stations, power distribution substations in all important industries, such as petrol-chemical industry, metallurgical and mining industries, and all transformer substations and wing power system.

 

Conformity with standards

GLX24 series meets the following international standards and national standards:

GB11022-1999                  IEC60694:2002

GB3906-2006                    IEC62271-200:2003

GB3804-2004                    IEC60265-1:1997

GB1984-2003                    IEC62271-100:2001

GB16926-1997                  IEC62271-105:2002

GB1985-2004                    IEC62271-102:2002

 

Vacuum circuit breaker panel is used for incoming/outgoing circuit, and can be equipped with microcomputer protection unit.

 

Structure of GLX24-V unit

 

Technical Data

Description	Unit	Value
Rated Voltage	kV	12	24
power frequency withstand voltage(1min) phase to phase	kV	42	50
power frequency withstand voltage(1min) between open contacts	kV	48	64
Rated frequency	Hz	50,60	50,60
Rated current	A	630	630
Rated short circuit breaking current	kA	20	20
Mechanical lifetime	Ops.	10000	10000
Protection degree		IP4X	IP4X

 

Standard configuration

• Busbar 630A
• VCB for transformer/circuit protection, 630A
• Spring operating mechanism for VCB
• Disconnector/earthing switch with three positions
• Operating shaft for disconnector/earthing switch
• Mechanical interlock between VCB and disconnector, position indicator
• Cable bushing 630A, with function of sensor, front mounted horizontally
• Voltage indicator
• Padlock on faceplate for every switch
• SF6 gauge (only one in block version)
• Earthing busbar
• Interlocks between lower front door and ES/operating shaft
• Interlocks between drives of VCB and disconnector
• Button, indication lamp and wiring terminals
• Relay protection device

Optional configuration

• Extensible busbar bushing
• interlock between bushing and ES (ES is locked while there is voltage on bushing)
• Electrical mechanism DC 24/48/110/220V, AC 110/220V
• Closing shunt release DC 24/48/110/220V, AC 110/220V
• Tripping shunt release DC 24/48/110/220V, AC 110/220V
• Loop current transformer for metering and current meter
• Lightning arrester or double cable connector
• Auxiliary contacts
  • Position of VS  2NO+2NC
  • Position of  DS  2NO+2NC
  • Position of ES  1NO+1NC
• Dew controller and heater