GW7-330/550 Series Disconnector
is manufactured according to IEC standards with high current rating,
It passed serial tests in KAMA and in inside China test institute, and
approved by China Machinery Association and National Power Company
with a conclusion that the disconnector is of world level of construction
and technique. Additionally, the disconnector has been granted patent on construction
2. Main Features
- High current rating
- Reliable operation, long mechanical & electric endurance, small operation force needed
- Good current conducting capacity.
- Good performance switching capacitive, inductive and busbar transfer current.
- High pollution-proof capacity
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3. Technical Data
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Description
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Unit
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Data
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Rated voltage
|
kV
|
330
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550
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Rated current
|
A
|
3150
|
4000
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Rated frequency
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Hz
|
50
|
50
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Peak withstand current for
main and earthing contacts
|
kA
|
125
|
160
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Short time withstand current
for main and earthing contacts 3S
|
kA
|
50
|
63
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1 min pf withstand
voltage(rms)
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To earth
|
kV
|
567
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680
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Across break
|
644
|
800
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Impulse lightning
withstand voltage (1.2/50¦Ìs)
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To earth
|
kV
|
1306
|
1550
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Across break
|
1306(+228)
|
1550(+315)
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Switching impulse
withstand voltage (peak 250/2500¦Ìs)
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To earth
|
kV
|
1056
|
1175
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Across break
|
889(+328)
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1050(+450)
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Bending strength, insulator(upper insulator)
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N
|
8000
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12000
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Bending strength, insulator(mid insulator)
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N
|
16000
|
24000
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Bending strength, insulator(lower insulator)
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N
|
16000
|
37715
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Operating mechanism
for main contact
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Type
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CJ7A(motor operation)
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Voltage rating
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V
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AC380/DC220/110
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Control voltage
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V
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AC380/AC220/DC220/110
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Motor power
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W
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550
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Output angle
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90¡ã
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Weight
|
kg
|
110
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Operating mechanism
for earthing contact
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Type
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CJ7A/CSA(manual)
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Weight
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kg
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25
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