JW5-1100/J63 high voltage earthing switch adopts folding plug-in structure, can effectively reduce the area and reduce the cost of power station construction, uses the counter weight and balance spring together to balance the change of potential energy, flexible and convenient operation, stable and reliable opening and closing process. When the closing is finished, the support rod and grounding arbor constitute a triangular frame structure, after the closing, the product has a higher stiffness and stability. Rated short-time withstand current 63kA(3s), mechanical life 5000 times, the technical performance is stale and reliable. This product has been passed the national identification in July 2010 which was organized by China Machinery Industry Federation, its technical performance reached the international advanced level.

1.Products meet the following standards and technical conditions

GB 1985-2004 High-voltage alternating-current disconnectors and earthing switches

GB/T 191-2008 packaging-pictorial marking for handling of goods

GB/T 4585-2004 Artifitial pollution tests on high-voltage insulators to be used on a.c. systems

GB/T 11022-1999 Common specifications for high-voltage switchgear and controlgear standards

GB/T 13540-2009 Seismic qualification for high-voltage switchgear and controlgear

GB/T 20635-2006 Special environment condition Technical requirements for high-voltage apparatuses for plateau

DL/T 486-2000 Specifications for HV AC disconnectors and earthing switches

DL/T 593-2006 Common specifications for high-voltage switchgear and controlgear standards

2. Service environment

2.1 The surrounding air temperature: -40℃～+40℃

2.2 Altitude: ≤1000m

2.3 Wind speed: ≤34m/s

2.4 Icing-thickness: ≤10mm

2.5 outer-insulation pollution class

2.6 seismic intensity: ≤ 9°

2.7 The installation site should be free of severe vibration and flammable, explosive materials and chemical corrosion.

3. The main technical parameters

Specifications	Unit	Value
Rated voltage	kV	1100
Rated short-time withstand current	kA	63
rated duration of short-circuit	S	3
Rated peak withstand current	kA	170
Rated short-time power frequency withstand voltage(effective value)	kV	1100
Rated lightning impulse withstand voltage（peak1.2/50μs）	kV	2400
Rated operating impulse withstand voltage（peak250/2500μs）	kV	1800
Rated terminal static mechanical load	N	Longitudinal 4000 Horizontal 3000 Vertical 2000

4.Product structure

JW5-1100 earthing switch adopts folding plug-in structure, composed of base, supporting insulator, conductive, operational mechanism and other components,

JW6-126/252 type Disconnetor