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High and Low Voltage Switchgear

Your Professional High And Low Voltage Switchgear Supplier

Our goal is to become your true partner in the field of high and low voltage switchgear in China. Shaanxi Sefon Electrical Equipment Co., Ltd. is a high-tech enterprise integrating research and development, design, production, sales, service, and power engineering general contracting. The company has strong technical foundation, advanced production equipment, exquisite manufacturing technology, rich project experience, and perfect service support. Our company is committed to applying advanced manufacturing technology and strict quality control standards to every product. The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.

10kV KYN28 High Voltage Switchgear
Product Description - KYN28-12 medium voltage switchgear is suitable for 3.6/7.2/12kV three-phase AC 50/60Hz power grid, used for receiving and distributing electric energy, and controlling,...
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GGD Low Voltage Switchgear
- Used as power receiving, feeding, busbar, lighting, motor control and power compensation in low-voltage power distribution system
- Includes the functions of power center (PC) and motor...
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GCS Low Voltage Draw-out Switchgear
Low-voltage complete power distribution device mainly used for power distribution, centralized motor control, and reactive power compensation in power generation and power supply systems
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MNS Low Voltage Draw-out Switchgear
There are three types of cabinets: power distribution center cabinet (PC), motor control center cabinet (MCC) and power factor automatic compensation cabinet
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35kV KYN61 High Voltage Switchgear
Sefon Electric's KYN61-40.5 high voltage switchgear (35kV) is designed for power receiving/distribution in substations, power plants & industrial sites. Supports 50/60Hz, 40.5KV rated voltage,...
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Why Choose Us

Production equipment

Our company has WR horizontal winding machine; ZBR-1000 fully automatic wire arrangement machine; ZBR-1000 shearing machine; ZY-50 vacuum oil filter and other equipment.

Our certification

Our company has passed ISO9001:2008 quality management system certification, ISO14001:2015 environmental management system certification, OHSAS18001:2007 occupational health and safety management system certification.

Production market

Our products are sold to most provinces in the country, including Heilongjiang, Shanxi, Qinghai, Xinjiang, Tibet, Sichuan, Henan, Hunan, Hubei, Yunnan, etc.

Our service

The company wholeheartedly provides customers with meticulous and professional consulting services, has professional technical personnel, follows standard specifications, clarifies customer needs, strictly controls quality plans, quantifies the implementation effects of plans, and solves customers' actual problems.

Advantages of High And Low Voltage Switchgear

Safety

High and low voltage switchgear systems provide protection against electrical faults, reducing the risk of fires, equipment damage, and personal injury.

Flexibility

High and low voltage switchgear systems can be customized to meet the specific needs of different applications, allowing for greater flexibility in electrical system design.

Reliability

By ensuring the continuous operation of electrical systems, high and low voltage switchgear contributes to the reliability of power supply, which is critical in industrial environments.

Efficiency

Properly designed and maintained high and low voltage switchgear can improve the efficiency of electrical distribution, minimizing energy losses and reducing operational costs.

Applications of High And Low Voltage Switchgear

Firstly, high and low voltage switchgear is widely used in the industrial field. In the process of industrial production, a large number of electric equipment and facilities are usually required to support production operation. High and low voltage switchgear can effectively manage these equipments and achieve precise control and protection of the power system.

Secondly, high and low voltage switchgear is also widely used in commercial buildings and public facilities. In commercial buildings, high and low voltage switchgear is used to control the lighting, heating, air conditioning and other equipment inside the building to ensure the comfort and safety of the building environment.

In addition, high and low voltage switchgear also plays an important role in the energy industry. In electric power plants, substations and transmission lines, high and low voltage switchgear is used to control and protect electric equipment to ensure the safe and stable operation of the power system.

Specification Parameters of High And Low Voltage Switchgear

Number	Project name		Unit	Parameter Value
1	Rated voltage		KV	12
2	Rated frequency		HZ	50
3	Rated insulation level	Lightning impulse withstand voltage	KV	42
3	Rated insulation level	1min power frequency withstand voltage	KV	75
4	Main busbar rated current		A	630,1250,1600,2000,2500,3150,4000** 4000﹡﹡
5	Divided busbar rated current		A	630,1250,1600,2000,2500, 3150.4000.**
6	4S thermal stability current (effective value)		KA	20,25,31.5,40
7	Rated dynamic stability current (peak value)		KA	50,63,80,100
8	Protection level		The housing is IP4X, and the isolation room and circuit breaker room doors are IP2X when opened.

Types of High and Low Voltage Switchgear

Low voltage switchgear

Low voltage switchgears are typically used for the voltage range of 1000v and 1500v dc current. Hence, they collectively refer to low voltage circuit breakers, earth leakage circuit breakers, miniature circuit breakers, molded case circuit breakers, offload electrical isolators, hrc fuses, and switches. All these accessories are necessary to protect the low voltage system.

High voltage switchgear

High voltage switchgears are usually chosen for the voltage range beyond 36kv. Since the voltage level here is greater, the arcing that is generated during switching operation is also high. Therefore, extra care and consideration is necessary while constructing these high voltage switchgear devices. The essential component of this type of switchgear is the high voltage circuit breaker.

Precautions For Use High And Low Voltage Switchgear

Altitude shall not exceed 1000m. Ambient air temperature shall not be higher than +40 degrees and not lower than -10 degrees. Relative humidity: daily average value shall not exceed 95%, monthly average value shall not exceed 90%. Saturated vapor pressure: daily average value shall not exceed 2.2KPa, monthly average value shall not exceed 1.8KPa. The inclination with the vertical plane shall not exceed 5°, and the whole set of cabinets shall be relatively flat and meet the standard. Required to be in a place without severe vibration and impact, where electrical components will not be corroded and there is no conductive dust.

Packaging and Shipping of High And Low Voltage Switchgear

Packing	Wooden cases for export
Shipping	Container transport, by sea.
Selling Units	Single item

FAQ

Q: What are the basic functions of switchgear?

A: Switchgear can provide control, protection and conduct the isolation of electrical systems to make sure that operations are carried out in a safe and reliable way.

Q: How is switchgear different according to the type of voltage?

A: The main difference comes in the level of voltage each is capable of: Lv is up to 1kv, mv from 1kv to 35kv, and hv above 35kv. All of them have their fields of utilization, regarding requested power and system specifications.

Q: Can low voltage switchgear be used in industrial settings?

A: Yes, it is used in the small industrial set-U.S, and even the voltage here does not go above 1kv. However, in large industry applications, mv or hv switchgear May be needed.

Q: What are the safety features used in high voltage switchgear?

A: The hv switchgear has developed safety features such as arc-quenching mechanisms, insulation using gases, and the use of beefy circuit breakers to be able to manage high energy levels without any incidents.

Q: How often is the switchgear maintained?

A: Switchgear shall be maintained at periodic intervals for safe operation. This shall be performed, at maximum, every 12 months, or at such time as recommended by the manufacturer by inspection, cleaning, and making the necessary tests.

Q: What is the difference between LV and MV switchgear?

A: LV (Low Voltage) switchgear is used in systems operating at voltages up to 1,000 volts, while MV (Medium Voltage) switchgear is used in systems operating between 1,000 and 36,000 volts.

Q: Why is switchgear important in industrial settings?

A: Switchgear is crucial in industrial settings as it protects against electrical faults, ensures the reliability of power supply, and allows for safe isolation and control of electrical equipment.

Q: How often should LV and MV switchgear be maintained?

A: LV and MV switchgear should be inspected and maintained at least annually, with more frequent checks recommended in harsh environmental conditions or high-demand applications.

Q: What factors should be considered when choosing switchgear for an industrial application?

A: Factors to consider include the voltage level, fault current rating, environmental conditions, and compatibility with existing systems and control equipment.

Q: Can LV and MV switchgear be upgraded or expanded?

A: Yes, LV and MV switchgear systems can be upgraded or expanded to accommodate changes in electrical load or to integrate new technologies, provided that the existing infrastructure is compatible.

We're professional high and low voltage switchgear manufacturers and suppliers in China, providing high quality products with low price. We warmly welcome you to wholesale cheap high and low voltage switchgear made in China here from our factory. Contact us for customized service.

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