Ceramic Pillar High-Voltage AC Circuit Breaker
As a professional and high-quality manufacturer of Ceramic pillar high-voltage AC circuit breakers, you can rest assured to purchase Ceramic pillar high-voltage AC circuit breakers from our factory. We will provide you with the best after-sales service and timely delivery.
Ceramic pillar high-voltage AC circuit breaker is equipped with CT20 spring operating mechanism, adopts self-arc extinguishing principle, and has single-break structure. The three poles of each circuit breaker are installed on a frame to realize three-phase mechanical linkage through transmission mechanism. The electric control can realize remote and local operation.
Main technical parameters of the product
Item No. LW36-72.5
1 Rated voltage kV72.5
2 Rated current A 1250 3150
3 Rated short-circuit breaking current kA 31.5
4 Rated short-time withstand current kA31.5 (4s)
5 Rated peak withstand current kA 80
6 Rated lightning impulse withstand voltage kV break 350+60 to ground 350
7 Rated 1 min power frequency withstand voltage kV break 160+42 to ground 160
8 Mechanism model CT20 spring operating mechanism
Ceramic pillar high-voltage AC circuit breaker product performance features
1Excellent breaking performance
2Long electrical life
3Reliable insulation performance
4Long mechanical life
5Safe and reliable operation, low maintenance workload
Ceramic pillar high-voltage AC circuit breaker main technical parameters
| Rated voltage | NAME | NUITV | LW36-72.5 | LW25-126/145 | LW25-252 | LW15B-252/LW15-252 | |||||||
| 66 | 126/145 | 252 | 252 | ||||||||||
| Rated frequency | Hz | 50 | 50 | 50 | 50 | ||||||||
| Rated current | A | 125,031,504,000 | 20,003,150 | 4000 | 31,504,000 | ||||||||
| Rated breaking current | kA | 25,31.5 | 40/31.5 | 40 | 50 | ||||||||
| Rated closing current | kA | 80 | 100/80 | 100 | 125 | ||||||||
| Rated short-time withstand current and duration | kA | 31.5(4s) | 40(4s)/31.5(4s) | 40(4s) | 50(4s) | ||||||||
| Rated peak withstand current | kA | 80 | 100/80 | 100 | 125 | ||||||||
| Near-zone fault breaking current | kA | lex 90%le x75% | |||||||||||
| Rated out-of-step breaking current | kA | lex 25% | |||||||||||
| Creepage distance | cm/kV | 3.1 | 2.5,3.1 | ||||||||||
| Break | kV | 160+42 | 315 | 395+145 | |||||||||
| Dry Test | To ground | kV | 160 | 275 | 460 | ||||||||
| 1 minute power frequency withstand voltage | Between electrodes | kV | 160 | 275 | 一一 | - | |||||||
| 1 minute power frequency withstand voltage | Break | kV | 160+42 | 275 | 395+145 | ||||||||
| Wet test | To ground | kV | 160 | 275 | 460 | ||||||||
| Between electrodes | kV | 160 | 275 | 一 | 一 | ||||||||
| Break | kV | 410 | 650/750 | 950+206 | |||||||||
| Rated lightning impulse withstand voltage | To ground | kV | 350 | 550/650 | 1050 | ||||||||
| Between electrodes | kV | 350 | 550/650 | 一 | - | ||||||||
| 5-minute zero gauge pressure power frequency withstand voltage | 5-minute zero gauge pressure power frequency withstand voltage | kV | 84 | 95/124 | 189 | 189 | |||||||
| Closing time | Closing time | ms | <150 | w150 | 50 | w100 | |||||||
| Opening time | Opening time | ms | w30 | w30 | w30 | w25 | |||||||
| Breaking time | Breaking time | ms | w60 | w60 | w60 | w60 | |||||||
| Closing and opening time | Closing and opening time | ms | 40-60 | 40-60 | 50-70 | 40-60 | |||||||
| Operation time difference | Operation time difference | Separation | ms | w2 | w2 | w2 | w2 | ||||||
| Inter-pole | Inter-pole | combination | ms | w4 | |||||||||
| Rated reclosing operation cycle | Rated reclosing operation cycle | 0.3s--180s-O-0.3S-CO- 180s-CO | |||||||||||
| Gas rated pressure | Gas rated pressure | MPa | 0.5;0.4 | 0.5 | 0.6 | 0.6 | |||||||
| SF6 gas alarm/locking pressure | SF6 gas alarm/locking pressure | MPa | 0.45/0.40,0.35/0.30 | 0.45/0.40 | 0.55/0.50 | 0.55/0.50 | |||||||
| NUIT | LW36-72.5 | LW25-126/145 | LW25-252 | LW15B-252/LW15-252 | |||||||||
| % | w0.5 | 1w0.5 | w0.5 | wO.5 | |||||||||
| 个 | 1 | 1 | 1 | 1 | |||||||||
| 次 | 3000 | 3000 | 3000 | 3000 | |||||||||
| N | 790 | 1250 | 1500 | 1500 | |||||||||
| N | 750 | 750 | 1000 | 1000 | |||||||||
| N | 750 | 1000 | 1250 | 1250 | |||||||||
| M Q | W50 | w45 | w45 | w42 | |||||||||
| Spring operating mechanism | Spring operating mechanism构 | Spring mechanism or hydraulic机构 | Hydraulic or pneumatic | ||||||||||
| kg | 4 | 6 | 30 | 30 | |||||||||
| kg | 1000 | 1400 | 3500 | 4000/4500 | |||||||||
| GB/T1984.IEC60056 | |||||||||||||
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No. 196-16, Wei 12th Road, Leqing Economic Development Zone, Leqing County, Wenzhou City, Zhejiang Province, China
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