Low Voltage Switchgear Working Principle
The working principle of low - voltage switchgear is based on circuit fundamentals and electrical control logic. It functions in low - voltage power systems for power distribution, circuit on - off control, and equipment protection.
Power Distribution: Power from sources like transformers enters via busbars. Then, circuit breakers and disconnectors distribute it to each branch according to load needs.
Circuit Control: Operators use switches and buttons to control circuit breakers' on - off, meeting equipment operation demands.
Protection: Over - current relays, leakage protectors, etc., monitor current, voltage, and leakage in real - time. When parameters exceed limits, they trip the breaker to protect against overloads, short - circuits, and leakage.
Cabinet Shell
The metal enclosure of the low - voltage switchgear, which provides support and protection, prevents internal components from being exposed, and ensures safety.
Busbar System
Consisting of copper or aluminum busbars, it is used to collect and distribute electrical energy, and its specifications are selected according to parameters such as rated current.
Circuit Breaker
A key component that can normally connect and disconnect the circuit, and automatically cuts off the circuit in case of faults to protect equipment and lines. There are types such as molded - case circuit breakers and frame circuit breakers.
Disconnector
Used to isolate the power source. When maintaining, it cuts off the connection between the circuit and the power source to form a visible disconnection point, and is often used in conjunction with circuit breakers.
Fuse
A simple and effective short - circuit protection device. When there is a short - circuit or overload, the fuse element melts to cut off the circuit.
Current and Voltage Transformers
The current transformer transforms large currents into small currents suitable for measurement and protection; the voltage transformer transforms high voltages into low voltages for use by measurement, protection and other devices.
| Name |
Control cabinet/panel |
| Product type |
One control by one |
| Box/cabinet size |
Customizable |
| Funtion |
Start Stop |
| Box/cabinet thickness |
0.8/1.2/1.5mm |
| Instal type |
wall mounting/console mode |
About
Fujian Guozhiyun Information Technology Co., Ltd. is a professional company engaged in electrical automation, dedicated to providing customers with overall power distribution and automation solutions for high and low voltage electrical control cabinets, distribution cabinets, explosion-proof cabinets, network design, production, and PLC programming.Our products and services are widely used in manufacturing, energy, transportation, petrochemical and other industrial fields. We have an experienced and skilled R&D team that can tailor the most suitable solutions for customers according to customer needs and project characteristics.If you have any requirements or questions, please feel free to contact us, we will serve you wholeheartedly! Sincerely hope that we can establish a good cooperative relationship in the near future, and promote common development and achieve mutual benefit.
Q: Are you a manufacturer? If yes, where is your factory?
Yes, we are manufacturer. Our factory and headquarters are located in Minhou County, Fuzhou City, Fujian Province, China, about 60 minutes' drive from Changle Airport and 30 minutes' drive from Fuzhou Railway Station. Mawei Harbor is the closest to us.
Q: What can I buy from you?
Complete sets of distribution boxes, distribution panels, control panels, control boxes, power supply cabinets, electrical cabinets, etc. We have 15 years of experience in the electrical automation industry and are committed to providing customers with high and low voltage electrical control cabinets, distribution cabinets ,explosion-proof cabinets, etc. Design, production and PLC programming of integrated power distribution and automation solutions.
Q: How can I place an order with you?
You should first provide us with detailed technical specifications or SLD (single line diagram) or related drawings, etc. via email, WeChat, whatsapp, phone, etc. You can contact any of our sales staff at any time for quotation and further communication.
Q: How long does it take to get a quote? What is the lead time?
After receiving the details, we will give you a quotation within 2 days. Generally speaking, it takes about 15 days for samples and about 26 days for mass production. The specific delivery time depends on the items and quantity of your order.
Q: What are your payment terms?
We accept any flexible and fast payment method.Irrevocable letter of credit at sight.Pay 30% in advance as deposit + 70% of the balance after the goods are ready (support T/T, Paypal, Apple Pay, Google Pay, Western Union, WeChat, etc.)
Q: Do you have an overseas technical team?
Yes, if you need it, our technical team can go to the site to guide installation, testing, debugging, maintenance, etc., and we can discuss it in detail.
Q: If we want to visit your factory, can you book a good hotel near the factory and pick us up from the airport or train station?
No problem at all. If you need an invitation letter before coming to China, we can provide it to you.
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