Product Description
A switchgear is an electrical device used for controlling, protecting and distributing electricity.
Function: In the process of power generation, transmission, distribution and energy conversion in the power system, the switch cabinet can open and close, control and protect the electrical equipment, and also play the role of receiving and distributing electrical energy.
Structural composition: It mainly consists of the outer shell, electrical components and operating mechanism. The casing is usually made of metal and is used to protect the internal electrical components. Electrical components are the core components, including circuit breakers, contactors, relays, etc., which can achieve the control and protection functions of the circuit. The operating mechanism is used to control the operation of electrical components, and it has two modes: manual control and remote control.
Classification method: 1. According to voltage level: It can be divided into high-voltage switch cabinets (above 1000V AC), medium-voltage switch cabinets (10kV voltage level), and low-voltage switch cabinets (1000V AC and below). 2. According to the installation method of circuit breakers: they are divided into withdrawable switch cabinets and fixed switch cabinets. 3. According to the structure of the cabinet body: they can be classified as open-type switch cabinets, metal enclosed switch cabinets, and metal enclosed armored switch cabinets, etc. 4. According to function: It can be divided into incoming cabinet and outgoing cabinet. Meter cabinets, compensation cabinets, etc.
Main electrical components:
1.Circuit breaker: Can interrupt normal load current and short-circuit current, used for circuit isolation and connection.
2.Isolating switch: Has an obvious break, mainly used for isolating high-voltage power supply to ensure safe maintenance of lines and equipment, cannot interrupt under load.
3.Load switch: Has a simple arc extinguishing device, can connect and interrupt a certain current, but cannot interrupt short-circuit current, often used in conjunction with fuses.
4.Fuse: When the current reaches or exceeds the set value for a certain period of time, the fuse melts and cuts off the circuit, used for short-circuit protection.
5.Transformer: Includes current transformer and voltage transformer, used for measuring current and voltage in the circuit.
Application scope: Covers various fields such as industry, commerce, and residences. In the industrial field, it is used for the control and protection of large mechanical equipment or process flows; in the commercial field, it is used for the power distribution system of buildings; in the residential field, it is used for the power distribution system of households.
Development trend: Modern switch cabinets usually have intelligent and networked characteristics, capable of realizing remote monitoring and control of electrical equipment. In addition, they are gradually developing towards miniaturization, modularization, and integration to meet the needs of different scenarios.
Working principle of switch cabinet
The core working principle of the switch cabinet is to achieve the control of power circuit connection and disconnection, fault protection, status monitoring and power distribution through the coordinated actions of internal electrical components. Essentially, it is a set of automated electrical control units that respond to changes in the power system according to preset logic.
To understand its working principle, one must first clarify its core task logic: normal operation is to stably distribute power, abnormal situations require rapid circuit disconnection, and during maintenance, the power supply should be isolated. Let's explore this from three parts: "Basic Logic → Coordinated Principle of Core Components → Typical Scenario Working Process", and explain the principle by combining the functions of specific components.
Three Major Basic Logics of Switch Cabinet Operation
All actions are designed around the following three core goals, which are the prerequisite for understanding the principle:
Control Logic: Based on requirements (manual / automatic instructions), control the "connection" or "disconnection" of the main circuit to achieve the start and stop of power supply for downstream equipment (such as motors, lighting, other distribution cabinets).
Protection Logic: Real-time monitoring of parameters such as current and voltage in the circuit. When short circuits, overloads, leakage, overvoltage / undervoltage, etc. occur, automatically and quickly cut off the circuit to prevent the expansion of faults (such as burning equipment, causing fires).
Isolation Logic: During maintenance, through components with obvious break points (such as disconnect switches), completely isolate the equipment to be maintained from the live power supply to ensure the safety of maintenance personnel.
Our Advantages
1.The insulation performance is excellent, which can reduce the insulation distance and lower the cost.
2.The transformer oil has a low viscosity and good heat transfer performance.
3.It can effectively protect the core and windings from the influence of moisture in the air.
4.It protects the insulating paper and insulating paperboard from the action of oxygen, reduces the aging of insulating materials, and extends the lifespan of the transformer.
5.Low maintenance cost and low noise level
Product Parameters
| Item |
|
Unit |
Data |
| Rated voltage |
|
kV |
40.5/36/35/33 |
| Insulation level |
Rated power frequency withstand voltage (1min) |
kV |
95/118(phase to earth/across open contacts) |
| Rated lightning impulse withstand voltage |
kV |
185/215 (phase to ground/open contact) |
| Rated frequency |
|
Hz |
50/60 |
| Rated main bus bar current |
|
A |
630/1250/1600/2000/2500 |
| Rated branch bus bar current |
|
A |
630/1250/1600/2000 |
| 4s short-time withstand current (rms) |
|
kA |
16/20/25/31.5 |
| Peak withstand current (peak) |
|
kA |
40/50/63/80 |
| Protection degree |
|
|
Enclosure: IP4X,
Between compartments: IP2X |
NOTICE!
Important: To ensure we tailor our product to perfectly suit your requirements, please provide the following information before placing your order. This enables us to deliver a product that aligns seamlessly with your specifications:
1. Type of prefabricated substation;
2. Transformer model and its capacity;
3. Main wiring scheme for high and low voltage circuits;
4. Specific types and parameters of any required electrical components;
5. Desired shell color;
6. Names, quantities, and any additional requirements for spare parts and accessories;
Two-year warranty
More than three certifications
15 years of accumulated experience
Packaging & Shipping
Product Recommendation
Company Profile
Golden Triangle Power Technology Co., Ltd.(stock name: Golden Trianglestock code: 837424) was established in November 2009. lt is a company specializingin the research and development, production, sales, and technical services of powerproducts such as three-dimensional coil core transformers, amorphous alloy coretransformers,amorphous three-dimensional coilcore transformers, photovoltaicsubstations, energy storage equipment, high and low voltage switchgear, European,American, Chinese outdoor box substations,intelligent substations, etc A productionservice oriented enterprise integrating construction EPC. The products are widelyused in fields such as State Grid, Southern Power Grid, railways, mines, infrastructure, metallurgy, roads and bridges, and real estate management system
The company has passed ISO9001:2015 quality management system certification, ISO14001:2015 environmental management system certification, ISO45001:2008 occupational health and safety management system certification, PCCC energy-saving product certification, national mandatory product"CCC"certification, CQC China quality certification, AAA credit rating certification, etc. The company has been rated as a national high-tech enterprise, a provincial "specialized. special and new" small and medium-sized enterprise, one of the top 100 scientific and technological enterprises with the most growth potential in the province, a provincial small and medium-sized scientific and technological enterprise, and a municipal green factory. The company has provincial high-tech enterprise research and development center academician workstation, doctor innovation workstation, 3 invention patents and 51 utility model patents.
The company's products have been recorded in the promotion catalog of the"Energy Saving and People Benefiting Project" and the "Recommended Catalog of Energy Saving Electromechanical Equipment" of the Ministry of Industry and Information Technology, the Ministry of Finance and the National Development and Reform Commission.lt is the first power industry enterprise in Wenzhou to receive direct subsidies from the Ministry of Finance for product sales. The company's products have won honorary titles such as the national industrial energy saving technical equipment products, the first set of products in key fields of provincial equipment manufacturing, and the provincial excellent new industrial products. The production standards of the main products "SCB13-RL solid triangle ironcore dry-type transformer" and "SBH16-RL solid triangle rolled iron core amorphous transformer" are listed as "Zhejiang manufacturing quality standard". The company led the drafting of 10 standards, including "GB/T32825-2016 National Standard for Three phase Dry type Three dimensional Wound Core Distribution Transformer","NB/T 10483-2020 Standard for Three phase Dry type Amorphous Alloy Three dimensional Wound Core Distribution Transformer" and "T/CEElA 251-2016 Standard for Composite Transformers for Photovoltaic Power Generation", making positive contributions to energy conservation and emission reduction in China's powerindustry and the development of green energy technology.
THE HONOR OF COMPANY
In the ever-evolving and fiercely competitive market landscape, Golden Triangle upholds an unwavering philosophy that 'quality is the enterprise life.' By implementing the comprehensive ISO9001:2000 international quality management system, we have solidified a quality policy of 'quality excellence, service perfection, continuous quality improvement' to guarantee customer satisfaction. The company's commitment to energy efficiency was highlighted by our inclusion in the 'energy-saving and Huimin engineering energy-efficient distribution transformer' initiative, led by the National Development and Reform Commission, Ministry of Finance, and Ministry of Industry and Information Technology during its inaugural enterprise promotion.
The exhibition we attended
Display area
SEVERAL PICTURES ABOUT COMPANY AND PRODUCTION
Office area
FAQ
FAQ
- Q: Are you manufacturer?
A: Yes, we are manufacturer. Our factory is in Wenzhou China
- Q: Can I get guarantee of products?
A: Yes, every product is 1 year quality warrantee under customer correct using the products.
- Q: Do you have any Certificate?
A: Yes. Each of our unit has CCC, ISO9001 certificate. All the electric parts with CE certificate, If you need any other Certificate, we can help you to get it.
- Q: How to buy it? What about the delivery?
A: Please contact me by email or online, let me know your situation, I will give you professional solution. We have shipping agent can choosing the cheapest and fastest delivery. FOB, CIF, C&F or EXW are no problem for us.
- Q: What's the payment terms?
A: For small testing orders, we can accept Waster union, T/T and Credit card.
For mass orders, we accept t/t and L/C.
- Q: What about the production?
A: Produce time is 4~6weeks.
- Q: Could you offer some spare parts?
A: Yes, no problem.
- Q: What about the maintenance?
A: All the goods past the test, maintenance is very easy.
The company adheres to the quality policy of "quality first, honestservice, strict management, and striving for perfection", and gives back tothe majority of users with first-class technology, first-class quality, and first-class service. We warmly welcome people from all walks of life to visit us forguidance and negotiation, to seek common development, to jointly build a'win-win" and to create a better future with you !
Audited Supplier 
){kind=link}