
ZN85-40.5 Vacuum Circuit Breaker
Production Introduction
ZN85-40.5 Vacuum Circuit Breaker is suitable for three-phase AC 50hz, 40.5kv power system, used by industrial and mining enterprises, power plants and substations to divide and combine load current, overload current and fault current. And suitable for frequent operation occasions.
The ZN85-40.5 indoor high voltage vacuum circuit breaker adopts the upper and lower arrangement structure, which effectively reduces the depth of the circuit breaker.
The ZN85-40.5 Vacuum Circuit Breaker adopts a composite insulation structure, which meets the requirements of air distance and creepage distance under normal working conditions, and effectively reduces the volume of the circuit breaker.The main circuit vacuum interrupter and the dynamic and static conductive connectors are installed in the insulating cylinder, and the phase spacing is only 300mm.The electrical connections of the main circuit are all fixed connections. That the reason why the ZN85-40.5 Vacuum Circuit Breaker has smaller size and more reliable system than previous products.
ZN85-40.5 Vacuum Circuit Breaker is a variety of customizable products,the installation form of the circuit breaker in the cabinet is a drawable handcart type, and there are also fixed installation circuit breakers arranged on the side of the mechanism.
REQUIREMENTS FOR USE ENVIRONMENT:
Normal operating conditions:
Ambient temperature: no more than 40℃; not lower than -15℃; the average daily temperature should not exceed 35℃;
Air relative humidity: the daily average is not more than 95%, the monthly average is not more than 90%;
Water vapor pressure: the daily average value is not more than 2.2kPa; the monthly average value is not more than 1.8kPa;
The surroundings are not obviously polluted by dust, smoke, corrosive gas, flammable gas, steam or salt mist;
Vibration or ground motion from outside the switchgear and control equipment is negligible;
The magnitude of the electromagnetic interference induced in the secondary system shall not exceed 1.6kV.
Special operating conditions:
According to the National Standard GB/T11022-1999 "Common technical requirements for high-voltage switchgear and control equipment standards", the circuit breaker should operate under the Normal operating conditions.
If the working conditions used by the user are different from the normal use conditions, such as:The installation site is more than 1000m above sea level, where the ambient air temperature exceeds the limit specified in normal use conditions or where high humidity is prone to condensation. It should be negotiated and agreed with the manufacturer, the company will provide customized products that to meet the requirements.
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 | 630 / 1250/ 1600 / 2000 / 2500 | ||
| 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 | F | 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 Operating Voltage | V | AC110 / AC 220 / DC110 / DC 220 | ||
| 13 | Rated Working Current of Closing and Opening Coil | / | 1.05(110V) / 0.96(220V) | ||
| 14 | Phase Center Distance | mm | 300±1.5 / 380±1.5 / 440± 1.5 | ||
| 15 | Allowable Wear Thickness of Contacts | mm | ≤3 | ||
| 16 | Main Circuit Resistance for Each Phase | μΩ | ≤80 (≤1250A)/ ≤60 (≥1600A) | ||
| 17 | Mechanical Lifetime | F | 10000 | ||
Mechanical characteristic parameters:
| No. | Item | Unit | Data | ||
| 1 | Contact Distance | mm | 20±2 | ||
| 2 | Overtravel | mm | 4±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 | 35 ~ 100 | ||
| 6 | Opening Time | ms | 20 ~ 70 | ||
| 7 | Closing Contact Bounce Time | ms | ≤3 | ||
| 8 | Three-phase Closing and Opening in Different Phases | ms | ≤2 | ||
| 9 | Buffer Stroke | mm | 17 | ||
Prodection details
Product Outline and Installation Dimensions:
(Unit:mm)


Other information:
Cabinet width 1.4m; Propulsion mechanism stroke 610mm;
Left ground, Light knife ground interlock;
The middle outlet, The secondary socket is 58 cores, and The secondary hose is 1.4m;
Operating voltage: DC 200V;
Other requirements are based on purchase orders;
The technical parameters are subject to the instruction manual.
Company Profile
Shaanxi Huadian Electric Co., Ltd. is located in Baoji High-tech Development Zone, Shaanxi Province.
Shaanxi Huadian Electric Co., Ltd. has built a domestic leading production system of modern power distribution system equipment based on the national project of "intelligent manufacturing mode of medium and low voltage power transmission and distribution equipment". The company now has high-efficiency transformer production lines, insulation parts production lines, circuit breaker automatic production lines, 12kV switchgear assembly automation production lines, 40.5kV switchgear assembly automation production lines and world-class intelligent sheet metal processing production lines. The company has passed ISO9001 quality management system, ISO14001 environmental management system, ISO45001 occupational health and safety management system certification.
Shaanxi Huadian Electric series products are widely used in the national grid, electric power engineering, iron and steel metallurgy, petrochemical industry, rail transportation, energy and water conservancy, construction engineering, environmental protection engineering, new energy and other fields, and sell well in more than 30 domestic provinces (municipalities and autonomous regions).
And exported to Cambodia, Vietnam, Egypt, Bangladesh, Tanzania, the Philippines, Congo (Kinshasa), Kazakhstan, Indonesia, Russia and other countries, has been praised and praised by the majority of users.

Production Workshop
The company consciously abides by national laws and regulations, establishes and implements sound management systems for production and operation management, and operates with integrity and compliance.
All employees follow the concept of "product quality is the life of an enterprise, and quality management is the lifeline of an enterprise", and all types of personnel at all levels actively participate in the whole process of product and service quality formation






Prodect qualification



Certifications



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