Qingdao Hengfengyou Electrical Engineering Co., Ltd.
| Payment Terms | LC T/T |
| Supply Ability | 20000 pieces/year |
| Delivery Time | 15 days |
| Packaging Details | wood |
| Brand Name | HENGFENGYOU |
| Model Number | ZW7 |
| Place of Origin | China |
| Certification | IEC CB COC KEMA SNI SABS CCC |
View Detail Information
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Product Specification
| Payment Terms | LC T/T | Supply Ability | 20000 pieces/year |
| Delivery Time | 15 days | Packaging Details | wood |
| Brand Name | HENGFENGYOU | Model Number | ZW7 |
| Place of Origin | China | Certification | IEC CB COC KEMA SNI SABS CCC |
| High Light | vcb circuit breaker ，vacuum circuit switch | ||
Introduction info
ZW7-40.5 model outdoor high voltage vacuum circuit breaker was used to AC 50Hz, 40.5kV 3-phase electric system as breaking, linking load current, overload current and short current.
Normal service condition
| Altitude | ≤1000m | |
| Ambient temperature | Max | +40℃ |
| Min | -15℃ | |
| Ambient humidity: Maximum average humidity | 24 hour ≤95% | |
| 1 month ≤90% | ||
| Maximum water vapor pressure | 24 hours ≤2.2kpa | |
| 1 month ≤1.8kpa | ||
The ambient air has no obvious pollution of dust smoke, corrosive or combustible gases, steams or smog
Technical Parameters
| No. | Specifications | Unit | Value | ||
| 1 | Rated Voltage | kV | 40.5 | ||
| 2 | Rated current | A | 1600 | ||
| 3 | Rated short-circuit breaking current | kA | 31.5 | ||
| 4 | Rated short-circuit switching current (peak) | 80 | |||
| 5 | Rated short time withstand (thermal stability) current | 31.5 | |||
| 6 | Rated short time withstand (dynamic stability) current | 80 | |||
| 7 | Rated short-circuit duration time | s | 4 | ||
| 8 | Rated insulating level | Power frequency withstand voltage (1 min) | Dry-type | kV | 95 |
| Wet-type | 80 | ||||
| Lightning impulse withstand voltage (peak) | kV | 185 | |||
| 9 | Rated operating sequence | O-0.3s-CO-180s-CO | |||
| 10 | Breaking time of rated short-circuit breaking current | Times | 20 | ||
| 11 | Breaking time (with spring operating mechanism) | ms | ≤80 | ||
| 12 | Mechanical life | times | 10000 | ||
| 13 | Rated operating voltage | V | AC220 DC220 | ||
| 14 | Clearance between contacts | mm | 20+30 | ||
| 15 | Over stroke of contacts | mm | 5±1 | ||
| 16 | Bounce time | ms | ≤5 | ||
| 17 | Loop DC resistance of each phase | μΩ | 120 | ||
| 18 | Outline dimension of breaker (L*W*H) | mm | 2200*700*2500 | ||
| 19 | Total weight of breaker (with operating mechanism) | kg | 1100 | ||
About us
Qingdao Hengfengyou Electrical Engineering Co. , Ltd. is one of the large-scale electric complete
sets of manufacturers in China, specializing in oil-immersed transformers, dry-type transformers,
high-voltage Cabinets, low-voltage cabinets and substation manufacturing specialized electrical
enterprises. The company is located in the beautiful coastal city of china-qingdao. The company
has a registered capital of 10 million yuan, 20 senior technical personnel, more than 500 employees,
and a sound sales and service system, annual output value of US $1 billion, the products sell well
at home and abroad.
Company Details
Business Type:
Manufacturer,Exporter,Trading Company,Seller
Year Established:
2008
Total Annual:
3000-5000
Employee Number:
100~200
Ecer Certification：
Active Member
Qingdao Hengfengyou Electrical Engineering Co., LTD., subordinate to Hengfengshuai Group, is an export-oriented enterprise with transmission and distribution industry as its main business, integrating product research and development, manufacturing and trade. Its main product... Qingdao Hengfengyou Electrical Engineering Co., LTD., subordinate to Hengfengshuai Group, is an export-oriented enterprise with transmission and distribution industry as its main business, integrating product research and development, manufacturing and trade. Its main product...
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