GW8 neutral point isolation relationship single-phase AC 50Hz high voltage switchgear, rated current: 630A, 1250A. In the case of voltage and no load, it is used for the neutral point grounding of the transformer. It is also used when the railway automatically blocks the letter device. It can be used in single stage. The anti-fouling type isolating switch can meet the requirements of users in heavy pollution areas, and can effectively solve the problem of pollution flashing that occurs in the operation of the isolating switch.
Model Description
This product is divided into two types: ordinary type and anti-fouling type (W); the operating mechanism used in this product is: CS8-5 type manual operation mechanism or CX6 type motor operation mechanism; CS17-G type manual operation mechanism Or CJ2, CJ5, CJ6, CJ12 type motor operating mechanism.
Use characteristics
Altitude no more than 1000m (special requirements are available); ambient air temperature: upper limit +40°C lower limit -25°C; wind pressure not exceeding 700Pa (equivalent to wind speed 34m/s); seismic intensity not exceeding 8 degrees; ice thickness 10mm Air pollution level: 0 (normal), II, III (stain-resistant). This series of isolating switch meets the requirements specified in GB1985-89 "AC high voltage isolating switch" IEC129 (1984) "AC disconnector grounding switch" and IEC694 (1980) "High voltage switchgear and control equipment sharing clause".
Characteristics
Main technical parameters of GW8 neutral point high voltage isolation switch
Name GW8-40.5 GGW8-72.5 GGW8-126G
Rated voltage kV 40.5 72.5 126
The highest voltage kV 40.5 40.5 126
Rated current kA 630,1250 630,1250 630,1250
Rated peak withstand current kA 50,80 50,80 50,80
Rated short-time withstand current kA 20,31.5 20,31.5 20,31.5
1min power frequency withstand voltage kV 90 155 230
Terminal rated static tensile force N 500 500 500
Principle and structure of GW8 neutral point high voltage isolation switch
The isolating switch is composed of a base, a post insulator and a conductive part. A static contact and a connecting plate connecting the bus bar are arranged above the insulating strut, and a base, a moving contact, an operating arm, and an operation are arranged between the strut insulator and the insulating strut. The insulator and the operating mechanism are connected to the movable contact through the connecting rod, the operating insulator, and the operating arm.
Floating Board To Board Connector
FLOATING Board to Board Connector
FLOATING Board-to-board (BTB) connectors as the name indicates is used for connecting circuits board together. This kind of connectors are suitable for stacking circuits boards one over another. Flat flexible cables can be avoided using these kinds of connectors; moreover it makes the entire unit more compact. The commonly used BTB connectors are SMT connectors and Berg Strip. We will discuss about them in detail in the following section.
SMT CONNECTOR
Surface Mount Technology (SMT) connector is a commonly found board-to-board connector in advanced circuit boards. As the name indicates this connector is available only in surface mount model. It is carefully mounted on to the solder pads on the surface of the PCB.
SMT connectors are ideal candidate for miniaturization due to their small area of occupancy and stacking height. They are suitable for double layered or multilayered PCBs. They are designed for high performance and reliability.
They commonly found in advanced circuit boards in networking equipment, telephones, mobile phones, computers and other consumer electronics.
Floating Board to Board Connector
ShenZhen Antenk Electronics Co,Ltd , https://www.antenksocket.com