Gang Operated Air Break Switches
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Quick Details
Product Details
• Designed and manufactured to meet or exceed the requirements of IEC 62271
• Accommodates many customer specific requirements where they differ from IEC
• Silicone insulators with minimum of 25mm/kV creepage
• Plated HDHC copperwork for longevity of life
• Available in 12/15.5 kV, 24 kV and 36 kV voltage ranges
• Standard current ratings of up to 1250 A
• Short time withstand current of 25 kA rms for 3 seconds with 62.5 kA peak
• Standard fault make capacity of 3 kA rms with 7.5 kA peak
• Compact and robust construction
• Suitable for horizontal and vertical mounting
• Suitable for mounting pole top (above the line) or underslung (below the line)
Accessories
• Low level operating handle, high level hookstick mechanism or Independent Manual Spring (IMS) operating mechanism
• 10k A rms 25k A peak fault make capacity when combined with IMS mechanism
• Load break devices with breaking capacity of 630 A for on-load use
• Can be fitted with motor drive/RTU for remote operation
• Earth blades rated at 25 kA 3 sec for fitting to either side
• Self-latching shootbolt on hookstick mechanism can be fitted with safety lock flap for lockoff and point of isolation
• Mounting steelwork to suit single or double pole construction
• Can be fitted with drop out expulsion fuses to form a combination switch fuse
Main Technical Specification
Sheet 1
No. | Item | Unit | Data | |||
1 | Rated voltage | kV | 12 | 24 | 36 | |
2 | Rated frequency | Hz | 50/60 | |||
3 | Rated current | A | 200/400/630 | |||
4 | Rated short circuit withstand current (1S) | kA | 20 | |||
5 | Rated peak withstand current (1S) | kA | 50 | |||
6 | Rated making current | kA | 31.5-50 | |||
7 |
Rated insulation level(HV) |
lightning impulse | kV |
75/85 | 125/145 | 170/195 |
Power frequency withstand | 45 | 55/75 | 75/100 | |||
8 |
Rated short circuit breaking capacity cos. Φ(0.7) Without maintenance of contacts |
—————————— | ||||
– for active circuits |
20 breakings | A |
630 | 630 | 400 | |
30 breakings | 400 | 400 | 300 | |||
40 breakings | 300 | 300 | 250 | |||
50 breakings | 250 | 250 | 170 | |||
75 breakings | 170 | 170 | 160 | |||
120 breakings | 110 | 110 | 110 | |||
200 breakings | 65 | 65 | 65 | |||
280 breakings | 50 | 50 | 50 |
Sheet 2
No. | Item | Unit | Data | ||
1 | Rated voltage | kV | 12 | 24 | 36 |
9 | For ring circuits breaking capacity | A | 630 | 400 | 250 |
10 | Rated breaking capacity of transformer | A | 50 | ||
11 | Rated breaking capacity of cable charging | A | 11 | ||
12 | Rated breaking capacity of earthing fault | A | 56 |
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