Our eternal pursuits are the attitude of “regard the market, regard the custom, regard the science” and the theory of “quality the basic, trust the first and administration the advanced” for ODM Manufacturer China Indispensable Electrical Component Circuit Breaker with a Long Lifetime, Thanks for taking your useful time to go to us and look ahead to have a nice cooperation with you.
Our eternal pursuits are the attitude of “regard the market, regard the custom, regard the science” and the theory of “quality the basic, trust the first and administration the advanced” forChina Vacuum circuit breaker,Vcb, We focus on providing service for our clients as a key element in strengthening our long-term relationships. Our continual availability of high grade products and solutions in combination with our excellent pre-sale and after-sales service ensures strong competitiveness in an increasingly globalized market.
ZW7-40.5 outdoor HV vacuum circuit breaker is a 3-phase AC 50Hz 40.5kV outdoor switch equipment.
♦ Installation way: foundation installation;
♦ Operating mechanism: spring operating mechanism and electromagnetic operating mechanism;
♦ Pole material: silicone rubber, ceramic;
♦ Application: outdoor 33kV substation, power plant.
♦ Current transformer: in-buit installation, external installation.
Product Standards
♦ IEC62271-100 High Voltage Switchgear and Controlgear Part 100: AC Circuit-breakers
♦ GB1984 High Voltage AC Circuit-breakers
♦ GB/T11022 Common Specifications for High-voltage Switchgear and Controlgear Standards
♦ JB/T 3855 High Voltage AC Vacuum Circuit-breakers
♦ DL/T402 Specification of High-voltage AC Circuit-breakers
Environmental Conditions
♦ Ambient temperature: -40°C~+40°C;
♦ Altitude:
♦ Maximum wind speed is 10km/h, minimum wind speed for the rated level (132/230kv) is 3.2km/h;
♦ Earthquake intensity:
♦ Minimum nominal creepage distance: 31mm/kV;
♦ Air pollution degree: Class IV.
Main Technical Parameters
| No | Item | Unit | Value | |
| 1 | Rated voltage | kV | 40.5 | |
| It is | Ratedinsulationlevel | 1 min power frequencyDry test (fracture, inter-phase, to earth)Wet test (to earth, external insulation) | kV | 95 85 |
| Lightning impulse withstand voltage(peak) | 185 | |||
| 3 | Rated current | A | 1250, 1600, 2000, 2500 | |
| 4 | Rated short circuit breaking current | kA | 20, 25, 31.5 | |
| No | Item | Unit | Value |
| 5 | Rated short circuit making current (peak) | kA | 50, 63, 80 |
| 6 | Rated peak withstand current | kA | 50, 63, 80 |
| 7 | Rated short time withstand current | kA | 20, 25, 31.5 |
| 8 | Rated operating sequence | O-0.3S-CO-180S-CO | |
| 9 | Rated short circuit breaking current breaking number | times | 20 |
| 10 | Rated short circuit duration | s | 4 |
| 11 | Breaking time | s | ≤0.09 |
| 12 | Mechanical life | times | 10000 |
| 13 | Newly manufactured vacuum interrupter | Ps | ≤1.33×10-3 |
| Vacuum interrupter during 20-year storage time | -2 | ||
| 14 | Circuit breaker net weight | kg | 800 |
| 15 | Clearance between open contacts | mm | 22±2 |
| 16 | Contact travel | mm | 4±1 |
| 17 | Average opening speed | m/s | 1.4-1.7 |
| 18 | Average closing speed | m/s | 0.4-0.7 |
| 19 | Contact closing bounce time | ms | ≤3 |
| 20 | Inter-phase opening and closing synchronism | ms | ≤2 |
| twenty one | Closing time | ms | 50≤t≤200 |
| twenty two | Opening time | ms | 30≤t≤60 |
| twenty three | Each phase main circuit DC resistance (not includeCT internal resistance) | mΩ | ≤100 |
| twenty four | Dynamic and fixed contact cumulative thickness allowed to wear | mm | 3 |
| 25 | Rated contact pressure | N | 2500±200 |
General Structure Drawing and Installation Size (unit: mm)
♦Side-mechanism type
♦Mid-mechanism type
Our eternal pursuits are the attitude of “regard the market, regard the custom, regard the science” and the theory of “quality the basic, trust the first and administration the advanced” for ODM Manufacturer China Indispensable Electrical Component Circuit Breaker with a Long Lifetime, Thanks for taking your useful time to go to us and look ahead to have a nice cooperation with you.
ODM Manufacturer China Vacuum Interrupter,Vcb, We focus on providing service for our clients as a key element in strengthening our long-term relationships. Our continual availability of high grade products and solutions in combination with our excellent pre-sale and after-sales service ensures strong competitiveness in an increasingly globalized market.
