Item Name: ZW7-40.5 series Outdoor Vacuum Circuit Breaker
The ZW7-40.5 Outdoor Vacuum automatic circuit braker are outdoor HV electrical equipments on three-phase AC 50Hz. It is used for contralling and protecting 24~40.5 KV transmission and distribution systems. It can also be used for network interconnecting breaker and switching capacitor bank matching with segmentation and reclose control of power systems.
Annexing a current transformer inside. It provides measurement and protection. Matching with spring or electromagnrtism operating mechanisms, the breaker has high reliability of mechanical property and can be operated frequently. It has no buming and explosion bazard. The breaker conforms to standards of GB1984-1989 AC HV Breaker and IEC 56, IEC62271-100 HV AC Breaker.
The breaker's main features: Excellent insulating property and strong anti soil performance. According to customer's requests, It can install current transformers inside. The measuring accuracy will be level of 0.2, And it realizes three-phase interaction protection.
The ZW7-40.5 Outdoor Vacuum automatic circuit braker are outdoor HV electrical equipments on three-phase AC 50Hz. It is used for contralling and protecting 24~40.5 KV transmission and distribution systems. It can also be used for network interconnecting breaker and switching capacitor bank matching with segmentation and reclose control of power systems.
Annexing a current transformer inside. It provides measurement and protection. Matching with spring or electromagnrtism operating mechanisms, the breaker has high reliability of mechanical property and can be operated frequently. It has no buming and explosion bazard. The breaker conforms to standards of GB1984-1989 AC HV Breaker and IEC 56, IEC62271-100 HV AC Breaker.
The breaker's main features: Excellent insulating property and strong anti soil performance. According to customer's requests, It can install current transformers inside. The measuring accuracy will be level of 0.2, And it realizes three-phase interaction protection.
| Item | Unit | Data | ||||
| Rated voltage | kV | 15 | 24 | 36 | 40.5 | |
| Rated insulation | 1min power frequency withstand voltage | kA | 50 | 60 | 70 | 95 |
| lightning impulse withstand voltage(peak) | 110 | 150 | 170 | 195 | ||
| Rated current | A | 630/1000/1250/1600/2000 | ||||
| Rated short-circuit breaking current | kA | 20/25/31.5 | ||||
| Rated operating order | time | O-0.3S-CO-180S-CO | ||||
| Breaking times of rated short-circuit breaking current | kA | 20 | ||||
| Rated short-circuit making current(peak) | kA | 50/63/80 | ||||
| Rated peak withstand current | kA | |||||
| Rated short-time withstand current | kA | 20/25/31.5 | ||||
| Rated short-circuit duration time | s | 4 | ||||
| Average switch off speed | 1.6± 0.3 | 1.5± 0.2 | 1.5± 0.2 | 1.6± 0.3 | ||
| Average switch on speed | 0.7± 0.2 | 0.7± 0.2 | 0.7± 0.2 | 0.8± 0.3 | ||
| Contact closing bounce time | ms | ≤ 5 | ≤ 5 | ≤ 5 | ≤ 5 | |
| Three-phase switch-on/off synchroneity time difference | ≤ 2 | ≤ 2 | ≤ 2 | ≤ 2 | ||
| Switch-off time | 20~60 | 20~60 | 20~60 | 20~80 | ||
| Switch-on time | 40~120 | 40~120 | 40~120 | 40~120 | ||
| Mechanical life | time | 10000 | ||||
| Rated operating voltage and auxiliary circuit rated voltage | v | DC220, 110 | ||||
| AC220, 110 | ||||||
| Each phase loop DC resistance | ≤ 100 | |||||
| Wearing thickness of moving & fixing contacts | mm | 3 | ||||
| Weight | kg | 400 | 600 | 750 | 800 | |
