ZN85-40.5 indoor high voltage AC vacuum circuit breakerProduct overviewZN85-40.5 series indoor high-voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker) is suitable for thre
ZN85-40.5 indoor high voltage AC vacuum circuit breaker
ZN85-40.5 series indoor high-voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker) is suitable for three-phase AC 50HZ, rated voltage 40.5kV power system, and can be used as a switching load current, overload current, It is used for fault current and is suitable for frequent operation places.
The circuit breaker and operating mechanism are arranged in an upper and lower structure, which effectively reduces the depth of the circuit breaker. The mechanism design is simple, and the output curve and its performance are more suitable for the characteristics and requirements of the 40.5KV vacuum circuit breaker. The overall layout is reasonable, beautiful, simple, small in size and flexible in operation. It has the characteristics of reliable electrical performance, long service life, convenient maintenance and maintenance-free mechanism.
Standard
1.GB/T 11022-2011 Common specifications for high-voltage switchgear and controlgear standards
2.IEC 62271-2007 High-voltage switchgear and controlgear - Part 1: Common specifications
Operating conditions
1.Ambient temperature: - 40℃-+40℃ (below 35℃ within 24 hours)
2.Relative humidity:≤95% (daily average) or≤90% (monthly average)
3.Altitude: ≤1000m
| NO. | Item | Unit | data | |||
| 1 | Rated voltage | KV | 40.5 | |||
| 2 | insulation level | power frequency withstand voltage(1min) | KV | 95 | ||
| 3 | Rated lighting implus withstand voltage(peak) | 185 | ||||
| 4 | Rated frequency | HZ | 50 | |||
| 5 | Rated current | A | 1250 | 1600 | 2000 | |
| 6 | Rated short-time withstand current 4s | KA | 25 | 31.5 | ||
| 7 | Rated withstand current (peak) | KA | 63 | 80 | ||
| 8 | Rated short circuit breaking current | KA | 25 | 31.5 | ||
| 9 | Rated short-circuit closing current | KA | 63 | 80 | ||
| 10 | Rated operation ranking | O-0.3S-CO-180S-CO | ||||
| 11 | Rated short circuit breaking current breaking times | times | 20 | |||
| 12 | Rated capacitor bank breaking current | A | 20 | |||
| 13 | Mechnical life | times | 10000 | |||
| 1 | Rated contact stroke | mm | 18±1 | |||
| 2 | Contact travel | mm | 5±1 | |||
| 3 | opening time(rated voltage) | ms | 20-50 | |||
| 4 | closing time(rated voltage) | ms | ≤100 | |||
| 5 | contact ersion limit | mm | 3 | |||
| 6 | Average opening speed | m/s | 0.8±0.2 | |||
| 7 | Average closing speed | m/s | 1.8±0.2 | |||
| 8 | Contact bouncing duration at closing contact | ms | ≤3 | |||
| 9 | three-phase non-simultaneity of contact closing | ms | ≤2 | |||
| 10 | Dominant loop resistance | Rated current | μΩ | ≤60 | ||
Installation dimensions
Overall dimension of ZN85-40.5 isolating handcart(cabinet width: 1400mm)
1.1 Technical parameters
| Item | Unit | Reference value | |
| Rated voltage | kV | 40.5 | |
| Rated insulation level | Lightning impulse withstand voltage | kV | 185 |
| 1min power-frequency withstand voltage | kV | 95 | |
| Rated frequency | Hz | 50/60 | |
1.2 Drawing of linkage between the moving contact and the fixed contact
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Packing details
by strong wood box
OEM can be customized as required on the box.
Buy Guide
1.Determine the rated voltage
2.Determine breaking capacity
3.Determine the rated current
4.Determine the installation method (A: handcart type B: fixed type)
5.Determine installation size
Production Workshop
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Welcome to visit the factory for guidance at any time.
About Us
Hebei Liebang Electric Technology Co. LTD was established in 2000, located in Hebei, China, covering an area of 20,000 square meters, is a group integrating R&D, manufacturing, sales and service. Our products cover many fields such as transformers, switch cabinets, electricity meters, wires and cables, and are widely used in construction, energy, communication and other industries.The company has its own technology research and development team. All products can be individually designed according to structural, mechanical and electrical principles. With advanced production equipment, testing equipment, production line and computer network control system, it is a leading domestic power equipment manufacturer in terms of product production, component selection and assembly. It has also passed ISO9001, ISO14001, ISO45001, CQC, test report and other quality system certifications, and the credit rating AAA certificate.We sincerely invite you to visit our factory for guidance and negotiation, and to explore potential cooperation opportunities.
