Zw7-40.5 1250A 2000A 2500A Outdoor High Voltage Smart Electrical Vacuum Circuit Breaker for Power Substation

Product Description

Product Description

Product Features

1. Optimized Structure, Suitable for Confined Spaces: Utilizing a centrally located mechanism box design, the overall length is shortened, making it suitable for outdoor installations in confined spaces and various power distribution scenarios.
2. Excellent Insulation Performance, Safe and Environmentally Friendly: Employing new composite insulation filling materials, it is oil-free, leak-free, and free of toxic media, eliminating potential hazards and ensuring safe and pollution-free operation.
3. Modular Structure, Convenient Maintenance: The current transformer features an external, independent structure with clearly defined partitions for the mechanism, arc-extinguishing chamber, and insulation components. Transformer maintenance and component replacement can be completed without complete disassembly, significantly reducing maintenance costs.
4. Stable Mechanical Performance, Long Lifespan: Core transmission components undergo anti-corrosion and reinforcement treatment, achieving a mechanical lifespan of up to 10,000 cycles and a rated short-circuit breaking capacity of 30 cycles. Long-term operation is free from jamming and malfunctions.
5. Strong Environmental Adaptability: It can operate stably in normal environments from -30℃ to +40℃. The high-altitude cold-weather version can withstand temperatures as low as -40℃ and can withstand wind pressures of 700Pa and Class IV pollution environments, making it suitable for harsh outdoor conditions.

Core Advantages

1. Strong adaptability to medium and high voltage: Specifically designed for 35kV high-voltage power distribution scenarios, with large insulation redundancy and strong resistance to high-voltage impacts. It can stably carry the load of substation main lines, and its high-voltage operating safety far exceeds that of ordinary pole-mounted circuit breakers.
2. Extremely low operation and maintenance costs: Modular split structure with independent layout of instrument transformers, operating mechanisms, and arc-extinguishing chambers. Fault diagnosis and component replacement do not require complete disassembly of the entire unit, resulting in long maintenance cycles and extended maintenance-free operation.
3. High operating stability: Targeted optimization of high-voltage insulation design, preventing condensation and pollution flashover, suitable for long-term continuous operation scenarios such as outdoor substations and industrial high-voltage power distribution, with no frequent fault risks.
4. Preferred upgrade and replacement: A perfect replacement for traditional oil circuit breakers, completely eliminating the risks of oil leakage, fire, and explosion. Environmentally friendly and safe, it complies with current power equipment safety regulations and environmental standards.

No.	Item			Unit	Data
1	Rated voltage			kV	40.5
2	Rated insulation level	1min 1 min Power frequency withstand voltage	Dry		95
			Wet		80
		Lightning shock withstand voltage (peak)			185
3	Rated current			A	1250,1600,2000
4	Rated short–circuit breaking current			KA	20,25,31.5
5	Rated operation sequence				open–0.3s–closeopen–180s–close open
6	Rated short–circuit current breaking time			Times	12
7	Rated short–circuit closing current (peak)			KA	50,63,80
8	Rated peak withstand current			KA
9	Rated short–time withstand current			KA	20,25,31.5
10	Rated short circuit duration			s	4
11	Contact opening distance			mm	22 ± 2
12	Contact overstroke			mm	4 ± 1
13	Average opening speed			m/s	1.5 ± 0.2
14	Average closing speed			m/s	0.7 ± 0.2
15	Contact closing bounce time			ms	≤ 2
16	Three–phase closing (opening) synchronous time difference			ms	≤ 2
17	Closing time			ms	≤ 150
18	Opening time			ms	≤ 60
19	Mechanical life			Times	10000
20	Auxiliary circuit rated voltage under rated operating voltage			V	DC110/220, AC110/220
21	DC resistance per phase circuit (excluding transformers)			μ Ω	≤ 100
22	Weight			kg	800

1. Incoming and outgoing line switches and busbar sectional protection switches for 35kV outdoor substations in urban and rural areas;

2. 35kV high-voltage power distribution systems for large industrial and mining enterprises, steel, chemical, and mining plants;

3. Power distribution protection for 35kV step-up substations of new energy power plants such as wind power, photovoltaic, and hydropower;

4. 35kV dedicated power supply lines for highways, railways, and large public buildings;

5. Upgrading and replacement projects for traditional and outdated 35kV oil circuit breaker equipment.

Company Profile

Lugao Power Co., Ltd. is a professional manufacturer specializing in high-voltage, medium-voltage, and low-voltage power transmission and distribution equipment. With years of experience in the electrical industry, our company is committed to providing reliable, safe, and high-quality products and solutions for global customers.

 

Our main products include high-voltage disconnectors, vacuum circuit breakers, load break switches, switchgear, ring main units (RMU), indoor and outdoor circuit breakers, distribution cabinets, power distribution equipment, and related electrical accessories. These products are widely used in power generation systems, substations, industrial plants, infrastructure construction, renewable energy projects, commercial buildings, and utility distribution networks.

 

The company integrates research and development, manufacturing, quality control, sales, and technical services. We own advanced production equipment, modern assembly lines, and complete testing facilities to ensure stable product performance and product consistency. During the production process, strict quality management standards are implemented from raw material selection to final inspection.

 

Our technical team continuously focuses on product innovation and technology improvement to satisfy changing market requirements and customer expectations. We are committed to improving product performance, operational safety, and service life while maintaining cost efficiency.

 

Quality is the foundation of our business development. We strictly control every manufacturing process and conduct comprehensive testing before shipment to ensure that every product meets international quality standards and customer requirements. We continuously improve our manufacturing capability and management system to provide reliable products and stable performance.

 

With a customer-oriented philosophy, we provide professional technical support, efficient communication, flexible customization services, and responsive after-sales service. OEM and ODM services are available according to customer specifications and project requirements.

Certifications

Exhibition

Packaging & Shipping

FAQ

Q1: What products does your company manufacture?

A: We mainly manufacture high-voltage, medium-voltage, and low-voltage electrical equipment, including disconnect switches, vacuum circuit breakers, switchgear, load break switches, distribution equipment, and related products.

Q2: Can you provide customized products?

A: Yes. OEM and ODM services are available according to customer drawings, technical requirements, and specifications.

Q3: What standards do your products comply with?

A: Our products are manufactured according to international standards and customer requirements. Product specifications can be adjusted based on project needs.

Q4: Can I get samples before placing a large order?

A: Yes. Samples can be provided depending on product type and availability.

Q5: What is your production lead time?

A: Lead time normally depends on product type and order quantity. Usually production takes around 15–35 working days after order confirmation.

Q6: What payment methods do you accept?

A: We usually accept T/T, L/C, and other payment methods after negotiation.

Q7: How do you ensure product quality?

A: We conduct strict quality inspections from raw materials to finished products and perform testing before shipment.

Q8: What transportation methods are available?

A: Sea shipment, air shipment, railway transportation, and express delivery are available according to customer requirements.

Q9: How about after-sales service?

A: We provide technical support, installation guidance, and responsive after-sales service.

Q10: Which countries do you export to?

A: Our products have been supplied to customers in various regions worldwide and are widely used in different power projects.