Product Overview:GW22B outdoor HV AC disconnect switch
GW22B disconnect switch is a kind of outdoor HV electricity transmission equipment three-phase AC frequency of 50Hz/60Hz.It is used for breaking or connecting HV lines under no loads so that these lines can be changed and connected and the way the electricity runs is changed. in addition, it can be used to exercise safe electrical insulation for such HV electric apparatuses as bus and breaker, The switch can open and close inductance/capacitance current and is able to open and close the bus to switch current.
This product is in the single-post single arm vertical telescopic structure. The contact is of the forceps-type. Vertical insulating breaks will be formed after the opening. The product can be used as an disconnect switch for bus. It is directly installed directly under the bus and only occupies a small space. JW10 earthing switch can be attached for grounding the bus at the lower layer, The grounding for the bus at the upper layer requires an independent earthing switch, 363kV and 550kV disconnect switch and earthing switch are equipped with the sRcJ2 motor actuator for the single pole operation. Mean while, the tri-pole linkage can be achieved. The 128 and 252kV isolating switches adopt sRcJ7 and sRcJ3 motor-based actuators to realize the tri-pole linkage. The grounding switch adopts cs11 and sRcs manual actuators to actualize tr-pole linkage.
Specifications and Parameters:
| Item | unit | parameters | |||||||
| Product model | GW22B-126D(G-W) | GW22B-145D(G-W) | GW22B-252D(G-W) | GW22B-363D(G-W) | GW22B-420D(G-W) | GW22B-550D(G-W) | |||
| Rated voltage | kV | 126 | 145 | 252 | 363 | 420 | 550 | ||
| Rated insuiating level | Rated Power Frequency With-stand Voltage(1min) | To earth / phase to phase | kV | 230 | 275 | 460 | 510 | 520 | 550 |
| Across isolating device | 230+(70) | 315 | 460+(145) | 510+(210) | 610 | 740 | |||
| Rated Lightening impulse with-stand vollage | To earth / phase to phase | 550 | 650 | 1050 | 1175 | 1425 | 1675 | ||
| Across isolating device | 550+(100) | 750 | 1050+(200) | 1175+(295) | 1425(+240) | 1675(+450) | |||
| Rated operating impulse with-stand voltage (peak) | To earth / phase to phase | —— | —— | —— | 950/1425 | 1050/1575 | 1300/1950 | ||
| Across isolating device | —— | —— | —— | 850(+295) | 900(+345) | 1175(+450) | |||
| Rated Frequency | Hz | 50/60 | |||||||
| Rated Current | A | 2000.3150.4000 | 2500 | 2000.2500.3150 4000.5000 |
4000.5000 | 3150 | 4000.5000 | ||
| Rated peak withstand current | 125 | 125 | 125/160 | 160 | 160 | 160 | |||
| Rated short-time wilhstand current | 50 | 50 | 50/63 | 63 | 63 | 63 | |||
| Rated duration of short circuit | S | 3 | 3 | 3 | 3 | 2 | 3 | ||
| Rated terminal Mechanical load | horizontal-longitudinal | N | 1250 | 1250 | 2000 | 2500 | 4000 | 4000 | |
| horizontal-lateral | 750 | 800 | 1500 | 2000 | 1600 | 2000 | |||
| Vertical force | 1000 | 1000 | 1250 | 2000 | 1500 | 2000 | |||
| Bus-transfer current switching capability of disconnectors | 100V,1600A, 100times |
100V,1600A, 100times |
100V,1600A, 100times |
435V,2400A, 100times |
300V,1600A, 100times |
435V,2400A, 100times |
|||
| Rated contact area | longitudinal displacement of guidewires (hard guidewire/soft guidewires) | mm | 100/100 | 100/100 | 150/200 | 150/200 | 150/200 | 175/200 | |
| Horizonial offset in total (hardguidewire/soft guidewire） |
100/350 | 100/350 | 150/500 | 150/200 | 150/500 | 175/600 | |||
| Vertical offset (hard guidewire/soft guidewire) | 100/200,300 | 100/200,300 | 150/250,450 | 150/300 | 150/300 | 175/400 | |||
| Disconnect switch small Current opening/closing copacity | Capacitive current | A | 1 | 1 | 1 | 1 | 1 | 2 | |
| Inductive current | A | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 1 | ||
| radio interference vollage | μv | ≤500 | ≤2500 | ≤500 | |||||
| Creepoge distance | mm | 3150/3906 | 3625/4495 | 6300/7812 | 9450 | 10500/13020 | 13750 | ||
| Mechanical endurance (M1) | times | 10000 | |||||||
| Applicable altitudes | m | ≤2000 | ≤1000 | ||||||
| Motor operating mechanism | Model | SRCJ7 | SRCJ7 | SRCJ3 | SRCJ2 | ||||
| Motor voltage | V | AC380/DC220 | |||||||
| Control circuit's voltage | V | AC220/DC220/DC110 | |||||||
| Opening time and closing time | S | 12±1 | 16±1 | ||||||
| Output shaft rotation | 135⁰ | 180⁰ | |||||||
| Manual operating mechanism | Model | SRCS | |||||||
| Control circuit's voltage | V | AC220,DC220,DC110 | |||||||
Product Features:
State-of-art structure
The disconnect switch is in the single-arm, foldable and telescopic structure. The driving elements and balancing springs are sealed within the conductive tube to reduce their adverse effects on natural environment and render the appearance compact and simple.
The drive base adopts a link lever. Compared with angular wheels, the product is simpler and easier to adjust.
Superior conductance system
The conductive part made of Al-alloy of high conductance rate is characteristic of good conductance, high mechanical strength, light weight and strong corrosion resistance.
The current will pass through the foldable area of the conductive arm via soft connection (without recourse to any movable contacts) to ensure reliable conductance, few maintenance, no examination, and long-term reliable operation.
Stable static contact structure
The hanging fixed contact is fixed with a pure alloy conductor ring to realize high degree of current flow capacity. The fixed contacts are hanged and fixed with the steel wires in the triangle shape to ensure the adjustment friendliness, stability and the reduction in vertical displacement.
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