Product Description
The ZW32-12/24/36kV outdoor vacuum circuit breaker and recloser is widely used for switching control and fault protection in urban and rural medium-voltage distribution networks, industrial parks, mining areas, and overhead transmission and distribution lines.
The ZW32-12/24/36kV Outdoor Vacuum Circuit Breaker + Recloser (rated for 12kV, 24kV, or 36kV) an outdoor high-voltage switchgear unit designed for medium-voltage distribution networks, suitable for systems with rated voltages of 12kV, 24kV, or 36kV.
The ZW32-12/24/36kV Outdoor Vacuum Circuit Breaker + Recloser (rated for 12kV, 24kV, or 36kV) utilizes vacuum arc-extinguishing technology and features High-Temperature Vulcanized (HTV) silicone rubber insulation. Designed specifically for outdoor environments, it offers excellent resistance to dust, moisture, UV radiation, and weathering. Anti-corrosion and specialized insulation configurations are available to meet project requirements for coastal areas with high salt-mist levels, mining sites, and industrial locations.
Depending on the configuration, the unit can integrate current transformers (CTs), voltage transformers (PTs), and an intelligent feeder controller. By monitoring operating parameters such as line current and voltage, the control system detects overcurrent, short-circuit, and earth faults, executing tripping, reclosing, or fault isolation operations based on preset protection settings. In the event of a transient fault - such as one caused by a lightning strike or contact with tree branches - the automatic reclosing function attempts to restore power supply, provided protection logic conditions are met. In cases of sustained short-circuits or permanent faults, the device executes a protective trip to isolate the faulty section, thereby minimizing the impact of the fault.
The controller supports multiple communication protocols and integrates with distribution automation systems, enabling remote switching, protection parameter configuration, fault record retrieval, and equipment status monitoring. It is well-suited for smart grid applications and distribution automation upgrade projects.
Main Technical Parameter
|
No. |
Name |
Unit |
Value |
|
1 |
Rated voltage |
KV |
12; 24; 40.5 |
|
2 |
Rated current |
A |
630, 1250, 2500; 1250, 1600; 1250, 1600, 2000 |
|
3 |
Rated frequency |
HZ |
50, 60 |
|
4 |
1 min power frequency withstand voltage |
KV |
42/48; 65/95; 95/118 |
|
5 |
Lightning impulse withstand voltage (creepage) |
KA |
75; 95; 125/145; 200/315 |
|
6 |
Rated short-circuit breaking current |
KA |
20, 25; 31.5; 40 |
|
7 |
Rated short-circuit current (peak) |
KA |
50, 63; 80 |
|
8 |
Rated peak withstand current |
KA |
50, 63; 80 |
|
9 |
As 4s short-time withstand current |
KA |
20, 25; 31.5; 40 |
|
10 |
Rated operating cycle |
- |
O-0.3S; CO; 180S-CO; O-0.3S; CO-15S-CO; 4S-CO |
|
11 |
Rated short-circuit current breaking time |
ms |
≤ 60 |
|
12 |
Mechanical life |
times |
30000; 20000 |
|
13 |
Secondary circuit 1min power frequency withstand voltage |
KV |
2 |
|
14 |
Clearance between open contacts |
MM |
9 ± 1; 12 ± 1; 15 ± 1 |
|
15 |
Over contact distance |
MM |
2.5; 2.5; 3 |
|
16 |
Average making speed |
MS |
1.2 ± 0.2 |
|
17 |
Average breaking speed |
MS |
0.8 ± 0.2 |
|
18 |
Making contact bounce time |
MS |
≤ 2 |
|
19 |
Circuit resistance |
μΩ |
≤ 80 |
|
20 |
Breaking time |
MS |
25-40; 16-45 |
Our Product Advantage
Comprehensive High-Voltage Specifications
Supports all common voltage ratings (12 kV / 24 kV / 40.5 kV), with rated currents up to 2000 A and short-circuit currents up to 31.5 kA. Suitable for diverse applications - including urban and rural distribution networks, mining operations, and PV/wind power plants - and specifically designed to meet grid requirements in regions such as Africa, the Middle East, and South Asia.
Eco-friendly Design
Features silicone rubber insulators offering superior UV, aging, and pollution resistance. The equipment includes anti-corrosion protection and withstands extreme temperatures, high humidity, dust, and salt-mist environments; the wide operating temperature range (-40°C to +55°C, suitable for desert climates) makes it an ideal choice for countries like Saudi Arabia.
Robust and Reliable Arc-Extinguishing Mechanism
Utilizes a high-performance vacuum interrupter with a mechanical lifespan of up to 30,000 operations and supports 30 rated-load breaking operations. Contact bounce time is ≤2 ms, and circuit resistance is ≤80 μΩ; opening and closing speeds fully comply with IEC standards, ensuring efficient fault clearing and extended maintenance intervals.
Intelligent Processing and Configuration Options
Offers a choice between spring-operated and permanent-magnet operating mechanisms. Supports integration with voltage transformers and FTU controllers to enable remote signaling, telemetry, and remote control functions. Compatible with DNP3 protocols and IEC 60870-5-104 standards to meet smart grid application requirements.
Easy Installation
Equipped with mounting brackets supporting single-pole or double-pole installation. Features a standardized dimensional design and strategically placed lifting points. Connection to an external control cabinet via cables simplifies the installation process.
Rigorous Factory Testing
Every unit undergoes comprehensive Factory Acceptance Testing (FAT) in accordance with international standards, including power-frequency withstand voltage tests, lightning impulse withstand voltage tests, circuit withstand tests, and mechanical characteristic verification.
Environmental Conditions
- Wide working temperature range: -40℃ ~ +40℃, suitable for cold and hot outdoor climates.
- Applicable for installation altitude up to 2000 meters.
- Earthquake resistance: withstand seismic intensity ≤ Grade 8.
- Wind load capacity: resistant to wind pressure ≤700Pa, strong against strong wind.
- Suitable for normal outdoor environments, free of flammable, explosive, heavily polluted, chemically corrosive conditions and severe vibration.
FAQ
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