Product details

Overview of ZN85-40.5 Indoor High Voltage Vacuum Circuit Breaker:

The Z N 8 5 series indoor high-voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker) is suitable for three-phase AC 50 Hz, rated voltage 40 In a 5kV power system, it can be used for dividing and combining load current, overload current, and fault current in industrial and mining enterprises, power plants, and substations. The circuit breaker and operating mechanism are arranged vertically, effectively reducing the depth of the circuit breaker.

The three-phase arc extinguishing chamber and associated charged body are isolated by three independent epoxy resin insulation cylinders, forming a composite insulation structure. The circuit breaker meets the requirements of air distance and creepage distance under normal operating conditions, and effectively reduces the volume of the circuit breaker. The main electrical circuit vacuum arc extinguishing chamber and the dynamic and static conductive connection are installed inside an insulating cylinder, with a phase spacing of only 300mm. All electrical connections in the main circuit are fixed and have high reliability. The insulation cylinder is installed above the circuit breaker frame.

The spring operated mechanism specially designed for this innovative circuit breaker is installed inside the circuit breaker frame, and its structural characteristics are more suitable for the upper and lower layout of the circuit breaker, becoming an integral part of the overall structure 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 40.5kV vacuum circuit breakers.

The overall layout is reasonable, beautiful, and concise. Small size, flexible operation, reliable electrical performance, long service life, easy maintenance, and maintenance free mechanism.

This circuit breaker is suitable for frequent operation, various occasions, and places with harsh operating conditions.

ZN85-40.5 Indoor High Voltage Vacuum Circuit Breaker Execution Standard:

1. GB1984-2003 High Voltage AC Circuit Breakers;

2. GB/T11022-1999 "Common Technical Requirements for High Voltage Switchgear and Control Equipment Standards";

3. IEC62271-100 High Voltage AC Circuit Breakers;

Normal operating environment for ZN85-40.5 indoor high-voltage vacuum circuit breaker:

1. Surrounding air temperature: not exceeding 40 ℃; The daily average temperature does not exceed 35 ℃; The lower limit of the surrounding air temperature is -15 ℃;

2. Relative humidity of the air: daily average not exceeding 95%, monthly average not exceeding 90%; The daily average value of water vapor pressure shall not exceed 2.2kPa; The monthly average value is not greater than 1.8kPa;

3. Altitude: not exceeding 1000m;

4. There is no obvious pollution from dust, smoke, corrosive and/or flammable gases, steam or salt spray around;

5. Vibration or ground motion from outside the switchgear and control equipment can be ignored;

6. The amplitude of electromagnetic interference induced in the secondary system shall not exceed 1.6kV;

7. Special usage conditions: The installation location should be at an altitude exceeding 1000m, where the surrounding air temperature exceeds the limit specified for normal usage conditions, or where high humidity is prone to condensation. Please consult with us for customization.

Technical features of ZN85-40.5 indoor high-voltage vacuum circuit breaker product:

The overall performance of the circuit breaker is excellent:

The overall structure of the circuit breaker is simple and reasonable, and the arc extinguishing chamber, interlocking, and operating parts are arranged vertically;

Specialized spring operated mechanism, no need for adjustment, stable and reliable action;

The installation form is free and flexible, including installation inside the pull-out handcart cabinet and fixed installation with side mechanism layout;

◆ High reliability insulation cylinder:

The insulation cylinder is made of reliable electromechanical epoxy resin through mature vacuum casting technology;

The vacuum arc extinguishing chamber is arranged inside a closed insulation cylinder, which significantly improves the insulation performance, avoids the influence of harsh external environments, and effectively prevents dust and foreign objects from entering the main circuit part;

◇ Significantly reduce the overall size of the circuit breaker.

Innovative vacuum arc extinguishing chamber:

The primary WL-35855X vacuum arc extinguishing chamber comes with quality assurance from Cutler Hammer Company in the United States;

◇ Optional coil type vertical strong magnetic field structure vacuum arc extinguishing chamber, using ceramic shell, copper chromium contact material, small external dimensions, high insulation level, strong arc extinguishing ability, long electrical life, excellent performance in breaking and closing short-circuit current;

◆ Optional sealing process:

The main electrical circuit of the circuit breaker adopts solid sealing technology, and the vacuum arc extinguishing chamber is poured into the insulation cylinder;

The insulation strength is greatly improved.