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The basic introduction of High and Low Voltage Power Distribution Cabinet

As the name suggests, the High and Low Voltage Distribution Cabinet is the power supply system used for power distribution, control, measurement and connection of cables, the general power supply bureau, substation are using high voltage switchgear, and then led to the Low Voltage Distribution Cabinet through the transformer step-down low voltage side.

Low Voltage Distribution Cabinet in each power distribution board, control box, switch box, which is through some switches, circuit breakers, fuses, buttons, indicators, meters, wires and other protective devices assembled into one to achieve the design function requirements of the distribution device equipment. Commonly known as: High and Low Voltage Switchgear or high and low voltage electrical equipment.

The role of High and Low Voltage Distribution Cabinet

High voltage inlet cabinet, metering cabinet, high voltage outlet cabinet, low voltage inlet cabinet, capacitor cabinet, low voltage outlet cabinet, these distribution cabinets are the conventional configuration of the distribution room, whether high or low voltage are combined according to a certain function.

1.High voltage inlet cabinet: it is a high voltage cabinet that breaks the high voltage inlet power supply, in fact, it is not a real inlet cabinet, and the inlet line is generally not connected to this cabinet, but to the isolation cabinet, but it has a circuit breaker (vacuum) that can break the inlet line power supply so it is called the inlet line cabinet.

2.Metering cabinet: As the name suggests is used to install the meter, accurately measure how much electricity you use the cabinet, the cabinet in addition to PT, CT will not have any large components.

3.High-voltage outlet cabinet: its role is used to distribute and transport electrical energy, he generally brings transformers or high-voltage electrical equipment (motor) and high-voltage compensation equipment.

4.Low voltage line cabinet: generally from the transformer down the first cabinet, also known as the low main cabinet, used to control all the electrical equipment below, his main switch is generally used frame circuit breaker.

5.Capacitor cabinet: His role is to compensate for the quality of electricity consumption and improve the power factor.

6.Low voltage outlet cabinet: its role is used to distribute and transmit electrical energy, he and high voltage is different from the basic direct to the electrical equipment, the switch is generally used plastic-case circuit breaker.

Selection of High Voltage Distribution Cabinet

For the choice of High Voltage Switchgear, including the contents of the cabinet type choice of high voltage switchgear (fixed or hand-car type), the series choice of high voltage switchgear (including the choice of less oil circuit breaker or vacuum breaker type), and the choice of high voltage electrical appliances.

1.Cabinet type selection

The selection of equipment for the communication office (station) should be based on domestic products (domestic or joint venture), requiring advanced technology, reliable quality, safe operation, easy maintenance, and small size.

2.Protection class standard for cabinets

At present, there are two types of protection levels of high voltage switch cabinet:

①　IP3X: Prevent solid foreign bodies larger than 2.5mm in diameter from entering the cabinet.

②　IP4X: Prevent solid foreign bodies larger than 1mm in diameter from entering the cabinet.

3.The choice of high voltage appliances

The basic requirement for the selection of high voltage appliances is to ensure the safe operation of electrical equipment under normal operation or fault conditions. Rated voltage and rated current of electrical appliances must meet the requirements of power supply.

4.High voltage circuit breaker selection

The main parameters of the high voltage circuit breaker are rated voltage and rated current.

The rated voltage of the circuit breaker is not less than the operating voltage of the device, and the most important parameters are the rated short-circuit breaking current ld,max and rated short-circuit closing current.

The price of High and Low Voltage Distribution Cabinet

The price of the High and Low Voltage Distribution Cabinet changes due to the customer's requirements for accessories and supporting, and there is no fixed price. If you would like to know the latest prices, please contact us to make an inquiry.

High and Low Voltage Distribution Cabinet supplier

Shunzhi Electric Power Equipment Co., LTD. (SHZPower) is a high-tech enterprise specializing in the research and development, design, production and service of intelligent power distribution, automatic control and other products and systems. The main products of the company are electrical automation, High and Low Voltage Distribution Cabinet, box-type substation, distribution box, control cabinet, control box and so on. The company can design and manufacture the control cabinet according to the actual needs and process requirements of users to meet the special needs of different industries and equipment, and is good at the design and production of high-protection products under high load, high temperature, high humidity and high corrosion environment. If you are looking for a safe, high quality, durable High and Low Voltage Distribution Cabinet, please feel free to contact us.