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Basic Info.
Product Description
Product Information
The switchgear has the functions of overhead inlet and outlet line, cable inlet and outlet line, and busbar connection. It is mainly used in power plants, substations, petrochemical industry, metallurgical steel rolling, light textile industry, factories and mining enterprises, residential areas, high-rise buildings and other different places.
The high and low voltage switchgear is an important part of the power system, which is mainly used to break the circuit, protect the power equipment and control the power system. The following is the main role of high and low voltage switchgear:
1. Disconnect the circuit
The high and low voltage switchgear can successfully perform the switching operation of the circuit breaker, that is, the switchgear can separate or connect the power supply by controlling the switch, and ensure the continuity of power transmission while maintaining the safety of the circuit and equipment.
2. Protect power devices
In the power system, the transmission process of high-voltage power supply will produce various faults, such as overload, short circuit and ground fault. The high voltage switchgear can choose the appropriate protection device according to the actual situation, detect and deal with these faults in time, and ensure the normal operation of the power equipment.
3. Control the power system
The high and low voltage switchgear can control the switch and state of the power equipment according to the actual needs of the power system. For example, when controlling the power system in real time, it is necessary to precisely adjust the transmission and distribution of power, and the high and low voltage switchgear can achieve this by controlling the switch.
Product Details
High/Low voltage switchgear is usually composed of switchgear, meters, control appliances, insulating parts, connecting parts, mechanisms, enclosures and bases. Switchgear is the core component of high voltage switchgear, it is to achieve high voltage line switching, disconnecting and load switching equipment, according to different uses can be divided into circuit breakers, load switches, combined electrical appliances, grounding switches and so on. Instrument is used to display the operating status of the switch cabinet equipment, such as ammeter, voltmeter, indicator light, etc. Control appliances are devices used to control the operation of the switch cabinet, such as control buttons, relays, remote controls, etc. Insulation parts are used to isolate the parts between electrical equipment, such as insulation board, insulation column, etc. Connecting parts are used to connect electrical equipment between the parts, such as conductive strips, patch panels, etc. A mechanism is a component used to realize the action of a switching device, such as a manual mechanism, an electric mechanism, etc. The shell is used to protect the parts of the equipment inside the switch cabinet, such as the steel plate shell, protective cover, etc. The base is used to support the switch cabinet components, such as steel plate base, Angle iron base, etc.
The main materials used are as follows:
1.Cold-rolled steel or Angle steel (for welding cabinets);
2.Aluminum coated zinc steel or galvanized steel (for assembly cabinets).
3.Stainless steel plate (non-magnetic).
4.Aluminum plate ((non-magnetic).
5.The functional unit of the cabinet
6.Main bus room (General main bus layout according to the "product" shape or "1" shape of two structures
7.Breaker room
8.Cable house
9.Relay and instrument room
10.Cabinet top small bus room
Product Parameters
High/Low voltage switchgear quality control:
The manufacturing of high/low voltage switchgear needs to be carried out in strict accordance with national standards, and quality control is required.
In manufacture in the process, materials, components, assembly, welding, insulation treatment, electrical testing and commissioning are required quality control.
At the same time, it is also necessary to carry out inspection, testing and acceptance.
| HXGN -12 High Voltage Switchgear | ||
| Item | Unit | Data |
| Rated Voltage | kv | 12 |
| Rated Frequency | Hz | 50 |
| Rated Current of Main Busbar/Maximum Rated Current of Fuse | A | 630,125 |
| Rated Short-time Withstands Current of Main Loop and Grounding Loop | KA/s | 20, 3 |
| Rated Peak Withstand Current of Main Loop and Grounding Loop | KA | 50 |
| Rated Shot-circuit Closing Current of Main Loop and Grounding Loop | KA | 50 |
| Breaking Times of Load switch with Full Capacity | times | 100 |
| Fuse Breaking Current | kA | 31.5, 40 |
| Rated Closed Loop Breaking Current | A | 630 |
| Rated Transfer Current | A | 1600 |
| Mechanical Life | times | 2000 |
| 1min Power Frequency Voltage (Peak Value) (Phase to phase and Phase to Earth/Isolating Fracture | kv | 42, 48 |
| Lightning Impluse Withstand Voltage (Peak Value) (Phase to phase and Phase to Earth/Isolating Fracture | kv | 75,85 |
| 1min Power Frequency Voltage of Secondary Loop | kv | 2 |
| Protection Degree | IP3X | |
| GGD AC Low Voltage Switchgear | ||||||
| Type | Rated voltage(V) | Rated current(A) | Rated short-circuit breaking current(kA) | rated short time current(1s)(kA) | Rated peak withstand current(kA) | |
| GGD1 | 380 | A | 1000 | 15 | 15 | 30 |
| B | 600(630) | |||||
| C | 400 | |||||
| GGD2 | A | 1500(1600) | 30 | 30 | 63 | |
| B | 1000 | |||||
| C | 600 | |||||
| GGD3 | A | 3150 | 50 | 50 | 105 | |
| B | 2500 | |||||
| C | 2000 | |||||
| GGJ Low Voltage Switchgear | |
| Rated voltage | 0.38-0.66KV |
| Rated frequency | 50HZ |
| Rated capacity | 1-600Kvar |
| Applicable voltage range | (0.85-1.1) times rated voltage |
| maximum permissible current | 1.3 times rated current |
| Control loop | Loop 1-16 |
| Switching time | 1-150S/times |
| Working mode | Automatic, continuous operation |
| ATS Low Voltage Switchgear | |||
| Item | Unit | Data | |
| Rated voltage of main circuit | V | AC380 | |
| Rated voltage of auxiliary circuit | V | AC220,AC380 | |
| Rated frequency | HZ | 50 | |
| Nominal insulation voltage | V | 660 | |
| Rated current | A | ≤800 | |
| GCS Low Voltage Switchgear | |||
| Item | Unit | Data | |
| Rated voltage of main circuit | V | 380/400/660 | |
| Rated voltage of auxiliary circuit | V | 220/380(400) 110/220 | |
| Rated frequency | HZ | 50(60) | |
| Nominal insulation voltage | V | 660(1000) | |
| Rated current | A | ≤4000,1000 | |
| generation line | A,B,C,PEN/A,B,C,PE,N | ||
| Power frequency test voltage | V | 2500/1760 | |
| level of protection | IP30/IP40 | ||
| MNS Low Voltage Switchgear | |||
| Rated frequency(Hz) | 50/60 | ||
| Rated voltage of auxiliary circuit(V) | 380,660 | DC110/220 | |
| Nominal insulation voltage(V) | 660/1000 | ||
| Rated operational current(A) | Horizontal bus-bar | ≤4000 | |
| Vertical bus-bar(MCC) | 1000 | ||
| Bus-bar | Three-phase four-wire system | A.B.C PEN | |
| Three-phase five-wire system | A.B.C.PE.N | ||
| Power frequency test voltage(V/1min) | Main circuit | 2500 | |
| Auxiliary circuit | 1760 | ||
| Rated voltage of main circuit(V) | AC 380/400/660 | ||
| Rated short-time withstand current of bus-bar(kA/1s) | 10 | ||
| Rated peak withstand current of bus-bar(kA/0.1s) | 105,176 | ||
| Protect level | IP40, IP30 | ||
| Kyn61-40.5 Armored Type Movable AC Metal-Enclosed Switchgear | ||
| Item | Unit | Data |
| Rated voltage | kV | 36kV, 40.5kV |
| Rated frequency | Hz | 50/60 |
| Rated current | A | 630, 1250, 1600, 2000, 2500, 3150, 4000 |
| Branch busbar rated current | A | 630, 1250, 1600, 2000, 2500, 3150, 4000 |
| Main busbar rated current | A | 630, 1250, 1600, 2000, 2500, 3150, 4000 |
| 1 min power frequency withstand voltage(wet/dry) | kV | 70/95 |
| Lightning impulse withstand voltage | kV | 170/185 |
| Rated short circuit breaking current(peak) | kA | 20/25/31.5/40 |
| Short time withstand current(4s) | kA | 40/50/63/100 |
| Protection type | IP4X for housing | |
| Kyn28A-12 Indoor withdrawout Metal-Clad and Metel-Closed Switchgear | ||
| Item | Unit | Data |
| Rated Voltage | kV | 3.6,7.2,12 |
| Rated Frequency | Hz | 50 |
| Rated Current of Circuit Breaker | A | 630,1250,1600,2000,2500,3150 |
| Rated Voltage of Switchgear | A | 630,1250,1600,2000,2500,3150 |
| Rated short-time withstand current (4s) | kA | 16,20,25,31.5,40,50 |
| Rated Peak Withstand Current (Peak Value) | kA | 40,50,63,80,100,125 |
| Rated Short-circuit Breaking Current | kA | 16,20,25,31.5,40,50 |
| Rated Short- circuit Closing Current | kA | 40,50,63,80,100,125 |
| 1min Power Frequency Withstands Voltage | kV | 24, 32, 42 |
| Lightning Withstands Voltage , Rated Insulation Leve | kV | 40, 60, 75 |
| Protection Grade | Shell is IP4X, Shell is IP2X when compartment and circuit breaker doors are open | |
High/Low voltage switchgear manufacturing process
1. Material preparation: The manufacture of high voltage switchgear requires a large number of metal materials, and it is necessary to prepare materials according to the requirements design drawings accurate cutting, bending, stamping and drilling.
2. Parts manufacturing: After obtaining qualified materials, it is necessary to manufacture parts. Parts manufacturing includes hardware manufacturing, sheet metal manufacturing, casting manufacturing and processing, etc.
3. Assembly: After parts manufacturing, assembly is required. The assembly needs to be grouped according to the design drawing to ensure that each component is installed in the correct position.
4. Welding: After the assembly is completed, the switch cabinet needs to be welded to ensure that the structure of the switch cabinet is firm.
5. Insulation treatment: After the welding is completed, the switch cabinet needs to be insulated to prevent electrical equipment between there is a leak.
6. Electrical test: After insulation treatment, electrical test is required. Electrical testing ensures it is on
The electrical performance of the closed cabinet meets the design requirements.
7. Trial run: After the electrical test is completed, it is necessary to conduct trial run. Different scenarios need to be simulated during trial operation the operating status of the switchgear to ensure the normal operation of the switchgear.
8. Packaging and transportation: After the completion of the trial operation, the switch cabinet needs to be packaged, transported and installed.
High and low voltage switchgear in the power system has a wide range of applications, the following are some common application scenarios:
1. Power transmission and transformation station
In large power transmission and transformation stations, a number of high-voltage switchgear will be set up as the main control device of the power system. These switchgear can protect and control the entire power transmission and transformation station, and can detect and deal with various faults.
2. Industrial and mining enterprises
In industrial and mining enterprises, high-voltage power equipment, such as transformers, generators and motors, is often needed. The high voltage switchgear can protect and control these devices to ensure that the equipment operates in normal working conditions.
3. Buildings
In some large buildings, it is necessary to use high and low voltage power equipment, such as air conditioning, elevators and lighting. The high and low voltage switchgear can control these devices to meet the actual needs of the building.
In short, high and low voltage switchgear plays an important role in the power system, they can be applied to a variety of scenarios, protect and control power equipment, to ensure the safe and stable operation of the power system.
Hebei Leicheng Power Technology Co., LTD is a technology-oriented enterprise specializing in R&D, production, sales and services of power transformers, HV/LV switch cabinets and related products.
Since its inception, our company has been committed to the path of professional development. By virtue of its strong technical force, domestic and foreign advanced equipment, innovative ideas and extensive manufacturing experience, it has been certified by ISO9000 and adopts CAD to provide customers with environment-friendly, energy-saving, low-carbon and high-quality products suitable for regional characteristics to meet the market and the basic requirements of different customers.
Currently the company mainly produces HV/LV power distribution cabinets, pre-fabricated substations, power distribution transformers, HV/LV switches and other products.
Its products cover the national market of China. Also the products are exported to Central Asia, Africa, Southeast Asia, the Middle East, South America and other countries and regions.
You can rest assured that the packaging of the product, as the last link we strictly control!
Q: Are you a Manufacturer, factory or Trading company ?
A: Yes, We are engaging in the research and development, production and operation of transformer for over 10 years.
Q: What's your warranty terms?
A: We offer 12 months warranty time.
Q: Production Time?
A: In general, it take 4~6weeks and it depend on the different style.
Q: What's your payment terms?
A: Pay by T/T and L/C is acceptable.
Q: How do you conduct quality control in your factory?
A: We implement 100% QC inspection to ensure every product is qualified. We have over 10 times QC inspections during the manufacturing process from raw material to the final products.Each of our unit has 3C certificate. If you need any other Certificate, we can help you to apply it.
Q: Do you have the products in stock?
A: Normally no. All our products produce depending to your order quantity.
Q: What should provide to make custom transformer ?
A: Technical drawing and technical specification document are the best, or you can tell us some details technical specification date as below "Quotation and Ordering Required Information".
Q: Could I have your catalog and price list for trial order in MOQ quantity?
A: All of our products are showing on Made-in-China or official website, you are always welcome to ask us to get more information directly.
Our plants produce all types of transformers and related power equipment, including substations, capacitor cabinets, header cabinets, dry transformers and more. Related products can be found on our home page, or contact me directly, let me help you!
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