Overview:
L&R developed LW-40.5/72.5/126/145 series of outdoor SF6 gas circuit breaker using modern processing technology and comper-aided design techniques, combined with the latest generation of spring bodies and the advantages of a permanent institution,.Its pursuit of high reliability, easy to maintain design concepts to create a generation of L&R all series switches meet the following criteria.
ANSI/IEEE G37.60/IEC 62271-100( GB1984-2003 China standard)
GBT11022-11
IEC 60255-21-1 Class I
IEC 60255-21-2 Class I
IEC 60255-21-3 Class I
IEC 60255-22-1 Class III
IEC 60255-22-2 Class IV
IEC 60255-22-3 Class III
IEC 60255-22-4 Class IV
Main features
1, molecule sieva 2. porcelain insul. ator
3, nozzle 4 pressure cylinder
5, valve disc 6. piston
7, moving contact pedestal 8. pull rod
9, moving contact finger 10. main contact
10, moving arc contact 12. fixed arc contact
13, fixed contact finger
14, fixed contact pedestal
L&R developed LW-40.5/72.5/126/145 series of outdoor SF6 gas circuit breaker using modern processing technology and comper-aided design techniques, combined with the latest generation of spring bodies and the advantages of a permanent institution,.Its pursuit of high reliability, easy to maintain design concepts to create a generation of L&R all series switches meet the following criteria.
ANSI/IEEE G37.60/IEC 62271-100( GB1984-2003 China standard)
GBT11022-11
IEC 60255-21-1 Class I
IEC 60255-21-2 Class I
IEC 60255-21-3 Class I
IEC 60255-22-1 Class III
IEC 60255-22-2 Class IV
IEC 60255-22-3 Class III
IEC 60255-22-4 Class IV
Main features
1, molecule sieva 2. porcelain insul. ator
3, nozzle 4 pressure cylinder
5, valve disc 6. piston
7, moving contact pedestal 8. pull rod
9, moving contact finger 10. main contact
10, moving arc contact 12. fixed arc contact
13, fixed contact finger
14, fixed contact pedestal
| Name | Unit | parameter | ||||
| reted voltage | kv | 40.5 | 72.5 | 126 | 145 | |
| rated frequency | Hz | 50/60 | ||||
| rated current | A | 1250,......4000 | ||||
| 1min power frequency withstand voltage | KV | 95/118 | 140 | 230 | 265 | |
| lightning impulse withstand voltage | KV | 215 | 325 | 550 | 650 | |
| 5min power frequency voltage at zero gas pressure | KV | 40.5 | 55 | 95 | 109 | |
| rated short circuit breaking current | KV | 63,.80 | 80,..100 | 80,..100 | 80,..100 | |
| rated short breaking current | KV | 21,...31.5 | 31.5,...40 | 31.5,...40 | 31.5,...40 | |
| rated out-of-phase breaking current | KV | 8/10 | 10 | 10 | 10 | |
| rated cable(line) charging breaking current | A | 31.5 | 10 | 31.5 | 50 | |
| rated gas pressure | Mpa | 0.4/0.15 | 0.4 | 0.5 | 0.5 | |
| main loop resistance | μΩ | ≤80 | ≤40 | ≤45 | ≤45 | |
| operation sequence | O-0.3s-CO-180s-CO | |||||
| SF6 gas leakage rate (per year) | % | ≤1 | ||||
| moisture content(v/v) | ppm | ≤150 | ||||
| creepage distance | across the open contacts | mm | 1256 | 2300 | 3950 | ≥3950 |
| to earth | 1256 | 2300 | 3950 | ≥3950 | ||
| mechanical life | times | 10,000 | ||||