The ZW32-36kV outdoor high-voltage AC vacuum circuit breaker, also known as an automatic recloser, employs vacuum arc-extinguishing technology for reliable operation in three-phase AC 50Hz/60Hz power distribution systems. Designed for 10-35kV distribution in both rural and urban grids, it efficiently handles load, overload, and short-circuit currents. The ZW32 series complies with GB 1984 "AC High-Voltage Circuit Breaker" and IEC 60056 "High-Voltage AC Circuit Breaker" standards, ensuring safety and performance.
This recloser utilizes advanced solid insulation technology, integrating the vacuum arc chamber, voltage sensor, current sensor, and zero-sequence current sensor within an insulated pole, creating a unified solid-insulated circuit breaker. Compatible with intelligent controllers, it supports functions required for reclosers, automatic sectionalizers, contact switches, and boundary switches in distribution networks. The unit can also connect to a central control system via various communication protocols, including GPRS, enabling full network automation.
The ZW32 recloser autonomously distinguishes between transient and permanent line faults, clearing transient faults and isolating permanently faulty sections, which ensures uninterrupted power supply to non-faulty areas and minimizes the risk of extended outages.
Constructed with pole-embedded technology, this recloser features a sealed vacuum bottle for fault interruption and utilizes epoxy resin and silicone rubber insulation. It includes a permanent magnet mechanism paired with a spring mechanism, enabling closing and opening operations even if the battery is depleted, ensuring continuous and reliable functionality.
First and Second Fusion Features
Primary Recloser Part:
1. The recloser adopts a three-phase pillar structure, which has the characteristics of stable and reliable breaking performance, no danger of combustion and explosion, maintenance-free, small size, light weight and long service life. The three-phase primary circuit is installed in the insulating sleeve of each phase. When a single-phase failure occurs, it will not cause a three-phase short circuit.
2. The recloser adopts a fully enclosed structure with good sealing performance, which helps to improve moisture-proof and anti-condensation performance. It is especially suitable for use in cold or humid areas.
3. The vacuum arc extinguishing chamber and current transformer are insulated with outdoor epoxy resin solid and covered with organic silicone, which are resistant to high and low temperatures, ultraviolet rays, and aging. It eliminates short circuit failures caused by condensation and is maintenance-free for 20 years. IP65 protection grade.
4. The operating mechanism adopts a permanent magnet mechanism, which has the characteristics of long electrical life, reliable breaking and maintenance-free, and has more than 30,000 switching operations. Utilizes magnetic actuators to provide a lifetime of trouble-free operation. Used in conjunction with the permanent magnet controller, it can be used as an automatic detection, isolation and alarm for ring network line segment and branch line faults, monitor the operation of the line, and has the function of automatically restoring non-fault power supply. Switch configuration measurement, protection, control and communication function modules , to meet the requirements of power distribution automation.
5. The recloser can be equipped with a three-phase current transformer of 600:1A or 800:1A for overcurrent or short-circuit protection. It is equipped with 6 capacitive sensors to collect voltage signals and the secondary output voltage is 3.25V/√3; It can also provide voltage and current collection signals to intelligent controllers;
6. The opening and closing operations of the recloser can be operated manually or electrically and remotely. When matched with an intelligent controller, it can realize recloser functions, as well as remote control, telemetry, remote signaling, and remote adjustment.
Secondary Intelligent Controller Part:
1. Comply with IEC 61850 standard to achieve plug and play.
2. It adopts high-performance digital signal processor and large-scale field programmable logic array, has powerful real-time data processing capabilities and rich memory resources, and meets the application requirements of advanced application software and communication, system management, human-computer interaction and other functions.
3. It can be flexibly configured according to needs to facilitate the realization of “two remote” or “three remote” functions.
4. Modular and standardized structure, using high-speed real-time serial bus, flexible expansion and easy maintenance.
5. Based on the real-time Linux operating system, it adopts a hierarchical and modular software structure. Applications access underlying resources and data through open interfaces, separate data from applications, and support dynamic loading and unloading of applications. Applications are plug-and-play. Provide a unified support platform for various smart distribution network applications.
6. Provide a PC-like software development environment, which can easily open new application software and add new application functions.
7. Software and hardware redundancy design, with strong fault tolerance, self-diagnosis and self-recovery capabilities.
8. The communication interface is standard and complete, meeting the needs of local interconnection, local maintenance and remote communication.
9. Industrial-grade chip, adaptable to a wide range of ambient temperatures (-40~+85℃).
10. Unique structural design, with good rainproof, moisture-proof, anti-fouling, anti-vibration and ventilation and heat dissipation capabilities.
11. Strict lightning protection and anti-electromagnetic interference design, the anti-interference ability meets the requirements of IEC standard IV.
Recloser Controller
The recloser controller integrates microprocessing technology and modern network communication technology. It supports a variety of communication protocols and allows the selection of multiple communication methods to form a communication network. The switch can be operated locally manually or remotely, or remotely controlled through the communication network. If equipped with corresponding recloser or segmentation control device, it can be used as a recloser or segmentation device.
Use Conditions
1. Normal usage conditions:
a, Ambient air temperature: -40℃～+60℃;
b. Altitude: no more than 2,000 meters;
c. The surrounding air may be contaminated by dust, smoke, corrosive gases, steam or salt spray;
d. The wind speed does not exceed 34m/s (equivalent to 700Pa on the cylinder surface);
e. Vibration or ground motion from switchgear and control equipment can be ignored;
f. Pollution level: Level III.
2. Special conditions of use:
The recloser can be used under normal usage conditions different from those specified above. In this case, the user’s requirements should be negotiated with the manufacturer and a consensus should be reached. If the above normal usage conditions are exceeded, the user shall negotiate with the manufacturer.