GW8 Outdoor High Voltage AC Neutral Point Disconnector

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Introduction
The GW8 outdoor high voltage disconnector is a single-phase AC switching device used for breaking transformer neutral point earthing in an energized, no-load power system with the maximum voltage of 126kV and frequency of 50 or 60 Hz.

This disconnector is composed of the post insulator, porcelain insulator, and the conductive part. On top of the post insulator, there are fixed contacts and connecting plate for connection bus. Between the post insulator and the porcelain insulator, there is the metal base, connecting lever, and operating insulator. A switch blade is mounted on the base. The CS8-5 manual operating mechanism is connected with the switch blade through the connecting rod, operating insulator, and connecting lever. A CJ6 motor drive mechanism can also be adopted.

Features
1. Adopting a clapper type structure, this neutral point disconnector occupies a small area.
2. The rotating part of this product is designed according to the requirement of freedom from maintenance. A cooperative structure of stainless steel shaft pin and oil-free self-lubricating bearing is adopted. All steel parts are hot-dip galvanized, so as to ensure that the disconnector is flexible and reliable to operate and it never rusts.
3. Our product is available in two types, ordinary type and anti-pollution type.

GW8 Outdoor High Voltage AC Neutral Point Disconnector

Service Conditions

Altitude	≤ 1000m (we can also provide products capable of serving in places above 1000m as per customer needs)
Ambient temperature	-25℃~ 40℃
Wind pressure	≤ 700Pa, corresponding to the win speed of 34m/s
Earthquake intensity	≤ VIII
Maximum ice thickness	10mm
Environment contamination level	Class 0 for ordinary type; Class II or III for anti-pollution type

Order Notice
When ordering, please pay attention to the following items:
1. Type and designation
2. Rated voltage
3. Ambient conditions
4. Type of operating mechanism and number of contact finger in the auxiliary switch
5. For the motor operating mechanism, the rated voltage of the motor is 380V and the control circuit voltage is AC 220V or 380V.

Main Technical Parameters of Neutral Point Disconnector

Item		Units	(H)GW8-40.5	(H)GW8-72.5	(H)GW8-126
Rated voltage		kV	40.5	72.5	126
Rated current		A	400, 630, 1250
Rated short time withstand current (4s)		kA	8, 20, 31.5
Rated peak withstand current		kA	20, 50, 80
1min power frequency withstand voltage (RMS)		kV	80	140	185
Rated lightning impulse withstand voltage (Peak)		kV	185	325	450
Mechanical life		times	2000	2000	2000
Rated terminal mechanical load	Vertical	N	800	800	800
Rated terminal mechanical load	Horizontal	N	200	200	200
Leakage distance per unit withstand voltage		Mm/kV	16, for one pole 20, for two poles 25, for three poles
Operating torque of manual mechanism		Nm	≤200	≤200	≤200
Weight of single pole		Kg	120	160	200
Operating mechanism			CS8-5 manual operating mechanism or CJ6 horizontal type motor drive mechanism

Related Names
Pole Mounted Isolator Switch | Air Break Disconnect Switch | High Voltage Ground Switch

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