Product Overview:GW23B outdoor HV AC isolating switch
GW23B disconnect switch is a kind of outdoor HV electricity transmission equipment at 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, t 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 double-post horizontal telescopic structure, with the plug-type contact, After the opening, a horizontal insulating break will be formed. The product can be used as an disconnect switch at the 110kV to 550kV substation. The JW10 earthing switch can be attached at one or two sides, When two GW23B disconnect switches are combined into a fixed contact, half of the line for a switch can be cutoff and the land coverage can be saved. 363kV and 550kV disconnect switch and earthing switch are equipped with the SRCJ8 motor actuator for the single pole operation. Meanwhile, the tri-pole linkage can be achieved. The 126kV and 252kv disconnect switches adopt SRCJ7 and SRCJ3 motor-based actuators to realize the tri-pole linkage. The earthing switch adopts CS11 and SRCS manual actuators to actualize tri-pole linkage.
Specifications and Parameters:
| Item | unit | parameters | |||||||
| Product model | GW23B-126D(GW) | GW23B-145D(GW) | GW23B-252D(GW) | GW23B-363D(GW) | GW23B-420D(GW) | GW23B-550D(GW) | |||
| 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 | kA | 125 | 104 | 125/160 | 160 | 160 | 160 | ||
| Rated short-time wilhstand current | kA | 30 | 40 | 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 | 600 | 1500 | 2500 | 2000 | 4000 | |
| horizontal-lateral | 750 | 200 | 1500 | 2000 | 660 | 2000 | |||
| Vertical force | 1000 | 1000 | 1250 | 1500 | 1500 | 2000 | |||
| Bus-transfer current switching capability | 100V,1600A,100times | 100V,1600A,100times | 100V,1600A,100times | 435V,2400A,100times | 300V,1600A,100times | 435V,2400A,100times | |||
| 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:
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 any movable contacts) to ensure reliable conductance, few maintenance, no examination, and long-term reliable operation.
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.
Simple and superior grounding switch
363kV earthing switch is in the single-arm standing and openable structure, with the structurally simple plug-type contact. The conductive rod for grounding will move in two steps at the moments of opening and closing. At the moment of opening, the conductive rod will rotate vertically and rise up to the static contact, and then automatically plug itself into the star-shaped contact, By doing so, the contact will be made reliable and be able to sustain heavy short-circuit current.
We offer the most advanced engineering design solutions and product technology solutions to global power customers, and continue to create value for the commercial success of global power customers.
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