66kV V Type Switch Disconnector with electric operating mechanism

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Product Classification and Main Technical Specification

1), product classification

Voltage level: 40.5kV, 72.5kV, 126kV.

Current level: 1250A, 2000A, 3150A.

Auxiliary earthing switch type: none earthing switch, left earthing switch, right earthing switch, double earthing switches.

Rotation type: rotation with an angle of 90 degree, rotation with an angle of 180 degree.

2), Main Technical Specifications

Technical Specifications	Product Type	GW5-40.5Ⅲ	GW5-72.5Ⅲ	GW5-126Ⅲ
Rated voltage kV		40.5	72.5	126
The rated current A		1250, 2000, 3150
Disconnector	Rated peak withstand current kA	100, 125
	Rated short-time withstand current (RMS)kA	40, 50
	Rated short circuit duration s	4, 3
Grounding switch	Rated peak withstand current kA	100, 125
	Rated short-time withstand current (RMS)kA	40, 50
	Rated short circuit duration s	4, 3
Rated short-time power frequency withstand voltage (RMS) kV	to earth	95	160	230
Rated short-time power frequency withstand voltage (RMS) kV	across open contacts	118	200	230+70
Rated lightning impulse withstand voltage (peak) kV	to earth	185	350	550
Rated lightning impulse withstand voltage (peak) kV	across open contacts	215	410	550+100
minimum clearance in 1 min power frequency withstand voltage when ground blade closing to live part of disconnector		53	94	164
rated terminal static mechanic load N	longitudinal level	800, 1000	800, 1000	1000, 1250
	Horizontal level	500, 750	500, 750	750
	Vertical force	750	750	1000
switching micro-capacitance current A		2	2	2
switching micro-inductance current A		1	1	1
switching busbar for current transfer A (busbar transfer voltage 100V)		400V, 2500A, 100 times
Radio interference level		less than 500 μV
Mechanical life		3000	3000	3000
single pole weight (kg)		120	200	260
Note: All applied to an altitude of 2000m

Q:What is the transmission line, what is the power distribution equipment: Usually an overhead line, a very small number of lines (or some of them) is a cable line

Q:What are the general requirements for working on distribution equipment?: Distribution equipment including high voltage power distribution room, substation, power distribution transformer platform, low voltage power distribution room (box), ring network cabinet, cable branch box] outage maintenance,

Q:Power distribution equipment should be prepared before the blackout?: electrician received power outage notice, pull down the knife switch, accept fuse.

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 role of transmission system and distribution system in power grid: The power load center is more concentrated in the industrial zone and the big city,

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:An introduction to the interpretation of flexible AC transmission systems: The series compensation device such as thyristor controlled series capacitor (TCSC), thyristor controlled reactor (TCSR), static synchronous series compensator (SSSC), active power flow is mainly used to change the system of distribution, improve the system transmission capacity and transient stability etc.;

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:Main equipment of high voltage direct current transmission: The utility model comprises a converter, a converter transformer, a smoothing reactor, an AC filter, a DC lightning arrester and a control protection device.

Q:Difference between distribution voltage and supply voltage: A distribution within the cell, the high voltage side is 10KV, the low voltage side is 220V or 380V.

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