ZN39-40.5 Vacuum Circuit Breaker
Production Introduction
Overview:
ZN39-40.5 Vacuum Circuit Breaker is an indoor high-voltage power distribution device with three-phase AC 50Hz and rated voltage of 40.5kV. The product is used with JYNl-35 and GBC35 switchgear. It meet the requirements of GBl984 "AC High Voltage Circuit Breaker". Ancillary products include: isolation handcart and PT handcart, etc.
The circuit breaker adopts air insulation, and the circuit breaker meets the requirements of air distance and creepage distance under normal working conditions. Reasonable layout, stable structure, easy installation and adjustment.
The operating mechanism of ZN39-40.5 Vacuum Circuit Breaker adopts the electromagnetic mechanism CDl0-Ⅲ or the spring mechanism CTl9N.The circuit breaker has a set of interlocking device, which is used together with the switchgear, and adopts the forced mechanical interlocking method to meet the "five-proof" function requirements of the switchgear.
Environmental conditions:
Ambient temperature: -25 degrees to +40 degrees. (It is allowed to store and transport at 30 degrees)
Altitude: 1000m.
Air relative humidity: the daily average ≤ 95%.
The monthly average ≤ 90%.
The daily average value of saturated vapor pressure ≤ 2.2x10-3MPa.
The monthly average ≤ 1.8x10-3MPa.
The earthquake intensity ≤ 8 degrees.
No fire, explosion, serious pollution, chemical corrosion and violent vibration places.
Structure and Features：
ZN39-40.5 series indoor high-voltage vacuum circuit breaker is an indoor device of power system.The main part of the product is designed as a handcart-type structure, and each arc extinguishing chamber is supported by two insulators and an insulating plate, which is easy to install in a handcart-type switch cabinet.The circuit breakers operation inside can be equipped with electromagnetic and spring-operated mechanisms.The handcart is equipped with a ground contact to ensure that the product can be reliably grounded when it is in the working position or the test position.
Specification
The main technical parameters of circuit breakers：
| No. | Item | Unit | Data | ||
| 1 | Rated Voltage | Kv | 40.5 | ||
| 2 | Rated Insulation(1min power frequency withstand voltage) | Kv | 95 | ||
| 3 | Rated Insulation(Rated lightning impulse withstand voltage) | A | 185 | ||
| 4 | Rated Frequency | Hz | 50 | ||
| 5 | Rated Current | A | 1000 / 1250 / 1600 | ||
| 6 | Rated Short-circuit Breaking Current | Ka | 25 / 31.5 | ||
| 7 | Rated Peak Withstanding Current | Ka | 63 / 80 | ||
| 8.a | Rated short-circuit making current | Ka | 63 / 80 | ||
| 8.b | Rated Short-circuit Current Breaking Times | t | 20 | ||
| 9 | Breaking Time | ms | ≤80 | ||
| 10 | Rated Thermal Stabilization Time | s | 4 | ||
| 11 | Rated Sequence of Operations | / | O-0.3s-CO-180s-CO | ||
| 12 | Rated Breaking Time of Single Capacitor | A | 400 | ||
| 13 | Rated Capacitor Combination Switching Inrush Current | kA | 8.0 | ||
| 14 | Breaking Time | ms | ≤8.0 | ||
| 15 | Allowable Wear Thickness of Contacts | mm | ≤3 | ||
| 16 | Main Circuit Resistance for Each Phase | μΩ | ≤80 | ||
| 17 | Mechanical Lifetime | F | 10000 | ||
Mechanical characteristic parameters：
| No. | Item | Unit | Data | ||
| 1 | Contact Distance | mm | 25±2 | ||
| 2 | Overtravel | mm | 6±1 | ||
| 3 | Average Closing Speed | m/s | 0.6±0.2 | ||
| 4 | Average Opening Speed | m/s | 1.6±0.3 | ||
| 5 | Closing Time | ms | ≤200 | ||
| 6 | Opening Time | ms | ≤70 | ||
| 7 | C-O Time | ms | ≤90 | ||
| 8 | Three-phase Closing and Opening in Different Phases | ms | ≤2 | ||
| 9 | Buffer Stroke | mm | 10 | ||
Prodection details
Product Appearance and Installation Dimensions:
（Unit: mm）
Company Profile
Shaanxi Huadian Electric Co., Ltd. is located in Baoji High-tech Development Zone, Shaanxi Province. It is a modern high-tech enterprise specializing in the production of vacuum circuit breakers integrating R&D, manufacturing and sales.
On the one hand Shaanxi Huadian has a circuit breaker production workshop of nearly 10,000 square meters, a fully automatic control assembly line and a full set of imported circuit breaker testing equipment, with an annual production capacity of 20,000 units.On the other hand the company maintains a good cooperative relationship with domestic scientific research institutions and colleges in the research and development of new products.
Production Workshop
Prodect qualification
Certifications
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