Your location：Home → High voltage electrical appliances → High voltage isolation switch → Outdoor isolation switch → GW7A series outdoor high-voltage isolation switch |
Product name： | GW7A series outdoor high-voltage isolation switch | |||||
| specification： |   Zoom in on the image |
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| Category： | High voltage electrical appliances -- Outdoor isolation switch | ||||||
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Price： | factory price | |||||
| Brand： | Shanghai | ||||||
| Place of Origin： | China | ||||||
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Available Quantity： | batch | |||||
| delivery cycle： | Spot goods (or inquire by telephone) | ||||||
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The GW7A series isolation switch is a three-phase AC 50Hz outdoor high-voltage electrical appliance with a three column horizontal double break structure. Used for switching high-voltage lines under no-current conditions and electrically isolating high-voltage busbars, circuit breakers, and other electrical appliances under maintenance from voltage carrying lines.
The GW7A series outdoor high-voltage isolation switch is operated by a CJ6-XG motor mechanism, the attached Type I grounding switch is operated by a CS17-G manual operating mechanism, and the Type II grounding switch is operated by a CS9-G manual operating mechanism. The grounding switch (Type II) of GW7A-500D is operated by CJ6-XG electric motor mechanism or CS9-G manual mechanism. CS17-G manual mechanism operation. 145 and 220KV are three-phase linkage; 330 and 500KV are single-phase operations, and when equipped with an electric mechanism, three-phase electrical linkage can be achieved through a control box.
The GW7A series outdoor high-voltage isolation switch can be equipped with grounding switches on one or both sides. The switch body is equipped with a mechanical interlocking device, which can ensure the correctness of the operation sequence of the isolation switch and the grounding switch. GW7A-220D (W) passed the three-phase dynamic thermal stability test at KEMA in the Netherlands.
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serial number |
Project parameters | ||||||||
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one |
Rated voltage kV |
two hundred and twenty | |||||||
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two |
Maximum working voltage kV |
two hundred and fifty-two | |||||||
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three |
Rated current A |
six hundred and thirty |
one thousand one thousand two hundred and fifty |
one thousand and six hundred two thousand two thousand and five hundred |
three thousand one hundred and fifty | ||||
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four |
Rated thermal stability current (effective value) kA |
twenty |
thirty-one point five |
40/40/50 |
fifty | ||||
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five |
Rated thermal stability time S |
three |
three |
three |
three | ||||
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six |
Rated dynamic stability current (peak value) kA |
fifty |
eighty |
100/100/125 |
one hundred and twenty-five | ||||
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seven |
1-minute power frequency voltage (effective value) kV |
to the ground |
395(460) |
four hundred and sixty | |||||
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fracture |
460(530) |
five hundred and thirty | |||||||
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eight |
Lightning impulse withstand voltage (peak) kV |
to the ground |
950(1050) |
one thousand and fifty | |||||
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fracture |
1050(1200) |
one thousand and two hundred | |||||||
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nine |
Rated terminal mechanical load N |
1000 or 1500 |
three thousand | ||||||
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ten |
Disconnect capacitor current A |
zero point six |
zero point five | ||||||
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eleven |
Electric opening and closing time S |
6±1 |
6.4±1 | ||||||
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twelve |
Creepage distance mm |
ordinary |
three thousand seven hundred and forty |
three thousand seven hundred and forty | |||||
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anti-fouling |
five thousand and five hundred |
five thousand three hundred and sixty | |||||||
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thirteen |
grounding switch |
Dynamic stability current (peak value) KA |
Type I |
twenty-three |
twenty-three |
twenty-three |
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Type II |
fifty |
eighty |
100/125 |
one hundred and twenty-five | |||||
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Thermal stability current (effective value) KA |
Type I |
10(1S) |
10(1S) |
10(1S) |
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Type II |
20(3S) |
31.5(3S) |
40/50(3S) |
50(3S) | |||||
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fourteen |
Supporting organization |
disconnecting switch |
CJtwo-G or CS17-G |
CJtwo-G |
CJtwo-XG CJtwo-GIV |
CJtwo-GⅡ | |||
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grounding switch |
Type I |
CS17-G or CS17-II |
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Type II |
CSnine—G |
CSnine—G | |||||||
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fifteen |
Weight kg |
not grounded |
five hundred and sixty |
five hundred and eighty-five |
six hundred and twenty |
one thousand and five hundred | |||
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Single grounding |
six hundred and fifty |
six hundred and seventy-five |
seven hundred and ten |
one thousand five hundred and seventy | |||||
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Double grounding |
seven hundred |
seven hundred and twenty-five |
seven hundred and sixty |
one thousand six hundred and forty | |||||
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