What is a high voltage cabinet and what is a low voltage cabinet

High voltage cabinet refers to:Power systemIt plays the role of on/off, control or protection in power generation, transmission, distribution, power conversion and consumption

The high-voltage switchgear is rated as a voltage level.

In the electrical products, high-voltage isolation switches and grounding switches, high-voltage load switches, high-voltage automatic reclosing and sectionalizers, high-voltage operating mechanisms, high-voltage explosion-proof power distribution devices and high-voltage switchgear.

High-voltage cabinet and low-voltage cabinet use range

1. The high-voltage cabinet is mainly used for the power supply bureau.

Or substations, where the voltage and current that need to be used are relatively high. It is mainly used for power generation, transmission, power conversion, etc., and in the process of use, it also needs to be used to protect tripping.

This can better play a role in protection, and it is not easy to have dangerous things.

2. Low-voltage cabinets are mainly used in some high-rise buildings.

Or a small business.

The voltage and current required will be slightly lower. At present, the electricity consumption of some residential households is basically 220 volts, so the internal use of the community is basically low-voltage cabinets, and the low-voltage cabinets also need to be equipped with protection tripping, once there is a danger of short circuit or open circuit, it can protect household electricity well.

Hello, the Ministry of Electric Power issued the "Electrical Safety Operation Regulations" stipulates that the ground voltage of 250V and below is low voltage, remember that it is not a phase-to-phase voltage; The "Electric Power Safety Work Regulations" promulgated by the State Grid Corporation of China stipulates that electrical equipment of 1000V and above is called high-voltage electrical equipment! The most important thing for high-voltage cabinet and low-voltage cabinet is the switch contact, the contact of the high-voltage circuit breaker is to consider how to extinguish the high-voltage arc, although the voltage of the low-voltage circuit breaker is not high, the insulation level is not high, but the short-circuit current is very large, and the arc extinguishing equipment is also to study how to extinguish the high-current arc.

Simply speaking, low-voltage cabinet is a cabinet-type transmission and distribution device that distributes 400V and below voltage, and high-voltage cabinet is commonly used as a transmission and distribution device of 10kV and above.

1. Different properties: high and low voltage switchgear, as the name suggests, is a device connected to high-voltage or low-voltage cables. The low-voltage switchgear is a product that is included in the 3C certification and the first compulsory certification.

catalogue of products.

2. Look at the model of the distribution cabinet: the common models of the high-voltage cabinet are KYN series, XGN series, HXGN series, GG1A, JYNGBC and so on. The common models of low-voltage cabinets are GGD, MNS, GCS, GCK, XL, PZ, JXF and so on.

3. Look at the electrical components in the cabinet: the high-voltage cabinet is generally equipped with a vacuum circuit breaker.

Load switches, disconnectors.

sensors, etc. Low-voltage cabinets are generally equipped with universal circuit breakers, molded case circuit breakers, knife switches, C45 and so on.

First, the characteristics are different.

1. Low-voltage switchgear: the design is reasonable, and the unitized design is carried out according to the characteristics of various switch electrical, and it is combined into a functional unit; The structure is universal, the assembly is flexible, and the C-shaped profile meets various structural forms. i. Requirements for the level of protection and the conditions for the use of surrounds; The standard module can be composed of standard unit modules such as protection, operation, conversion, and control, and the module structure can be selected arbitrarily; Safety protection, the isolation between areas and the mutual isolation between the inlet and outlet lines of the functional unit are adopted to effectively strengthen the safety protection performance; Technical Parameters:

The main technical parameters are at the international leading level.

2. Low-voltage distribution cabinet: it has the characteristics of strong breaking capacity, good dynamic and thermal stability, flexible electrical scheme, convenient combination, strong seriality and practicability, and novel structure.

2. The scope of application is different.

1. Low-voltage switchgear: Low-voltage switchgear is suitable for power plants, petroleum, chemical, metallurgy, textiles, high-rise buildings and other industries, as power transmission, distribution and power conversion.

2. Low-voltage distribution cabinet: for power conversion and control of lighting and power distribution.

Third, the rated voltage is different.

1. Low-voltage switchgear: rated working voltage 380V, 660V.

2. Low-voltage distribution cabinet: the power distribution system with a rated voltage of 380V is used as the power.

Encyclopedia - low-voltage switchgear.

Encyclopedia - low-voltage distribution cabinet.

The high-voltage distribution cabinet is composed of two parts: the cabinet and the circuit breaker, and the cabinet is composed of the shell, electrical components (including insulators), various mechanisms, secondary terminals and wiring.

High-voltage distribution cabinet refers to the electrical products used in power system power generation, transmission, distribution, power conversion and consumption to play the role of on-off, control or protection, etc., and the voltage level is in.

It mainly includes high-voltage circuit breakers, high-voltage isolation switches and grounding switches, high-voltage load switches, high-voltage automatic reclosing and sectionalizers, high-voltage operating mechanisms, high-voltage explosion-proof power distribution devices and high-voltage switchgear. The high-voltage switchgear manufacturing industry is an important part of the power transmission and transformation equipment manufacturing industry, and occupies a very important position in the entire power industry.

High-voltage distribution cabinet "five defenses".

1. After the vacuum circuit breaker trolley in the high-voltage distribution cabinet is closed in the test position, the trolley circuit breaker cannot enter the working position. (Prevent mis-opening and closing of circuit breakers).

2. When the grounding knife in the high-voltage distribution cabinet is in place, the trolley circuit breaker cannot enter and close. (Prevent closing with grounding wire).

3. When the vacuum circuit breaker in the high-voltage distribution cabinet is closed, the back door of the cabinet is locked with the cabinet door with the machinery on the grounding knife. (Prevent inadvertent entry into the live interval).

4. The vacuum circuit breaker in the high-voltage distribution cabinet is closed during work, and the grounding knife cannot be put into operation. (Prevent live hooking of ground wire).

5. The vacuum circuit breaker in the high-voltage distribution cabinet cannot exit the working position of the trolley circuit breaker when it is working and closing. (Prevent load broach switches).

The high-voltage power supply sent from the line first goes to the high-voltage switchgear, and there is a circuit breaker in the high-voltage switchgear to close or disconnect the power supply of the power supply line, and there are meters such as electricity, voltage and current.

From the high-voltage switchgear feeder to the transformer, after the transformer step-down, it is sent to the low-voltage switchgear. There are also various meters in the low-voltage switchgear, and there are feed lines to the users of various loads. If it is civil electricity, the line from the low-voltage switchgear will be divided into multiple routes to each household through the distribution box.

The high and low voltage switchgear can be arranged together, but the high and low voltage switchgear should be arranged separately, with obvious respective areas. If a dry-type transformer is used, it can be arranged in a distribution room with the switchgear. If it is an oil-immersed transformer, a separate transformer room must be set up, which is arranged separately from the switchgear, and the door from the transformer room to the distribution room should be a fireproof partition door.

High voltage, low voltage, should refer to 10kV and, high-voltage cabinet is installed on the 10kV side, the power supply line below 10kV control and metering, high-voltage cabinet including transformer control cabinet, incoming cabinet, metering cabinet, PT cabinet, outlet cabinet and reactive power compensation cabinet.

The low-voltage distribution cabinet is to control the side of the 10kV transformer after transforming, including incoming cabinets, metering cabinets, feeder cabinets, outlet cabinets, and reactive power compensation cabinets.

High-voltage electricity comes out of the substation, first through the high-voltage cabinet (commonly speaking, it is a high-voltage main switch), and then through the transformer (commonly turning high-voltage electricity 10kV into low-voltage electricity 400V) and then to the low-voltage cabinet.

The next home of the high-voltage cabinet is the transformer, and the next home of the transformer is the low-voltage cabinet, which is the relationship between the three of them.

The high-voltage cabinet is generally the control side of the transformer, and the low-voltage side is the outlet side of the transformer.

High-voltage cabinets are generally more than 10,000 volts.

Low-voltage cabinets are generally below 400 volts.

1. The high-voltage cabinet is an electrical switchgear necessary for the urban power grid to enter the household, including the main switchgear, metering cabinet and outlet cabinet.

2. There is a high-voltage outlet cabinet to the primary side of the transformer, and the secondary side of the transformer transforms a qualified low-voltage electricity, which is introduced into the low-voltage switchgear.

3. The low-voltage switchgear is the basic switchgear composed of the user's power grid, including the main switch, the metering cabinet (optional), the capacitor compensation cabinet, and the outlet cabinet (several).

Summary. Do you know what low-voltage cabinets and high-voltage cabinets are called in the world?

Good. Good.

Hello, Liang sells high and low voltage distribution cabinets, which is also known as "high and low voltage distribution cabinet" in the world

Ok thanks.

High and low voltage distribution cabinet, Song Xiao is the power supply system for power distribution, control, metering and connection of cables of the distribution of the field of electricity equipment. There is no difference between home and abroad

Will you change the high and low voltage distribution cabinet of Dongyun to English? In the international community, it is also called "high and low voltage distribution cabinet".

Yes, that's what it's called.

Good. There are some abbreviations, for you to see.

When power is transmitted: the power side is sent first, and then the load side is sent to the car.

Power Transmission High-voltage power supply--- high-voltage outlet--- ground pressing--- low-voltage outgoing line --- load.

Inlet cabinet: It is a switch cabinet that introduces power supply from the outside, generally from the power supply network to introduce 10kV power supply, and the 10kV power supply sends the electric energy to the 10kV bus through the switch cabinet, and this switch cabinet is the inlet cabinet.

Composition: vacuum circuit breaker, disconnector, three groups of three-coil current transformers, lightning arresters, live displays, voltage transformers, wires and other components.

1.Kaizhenye Closed Station: It is a combination of switchgear with an all-metal seal and a voltage level below 10kV that can operate outdoors;

The 10kV distribution room switch cabinet and its function, the power supply system is used to step down the high voltage through the transformer to the ridge level such as the voltage required by the user, and is equipped with an indoor integrated system of protection, metering and distribution.

Composition: incoming cabinet, metering cabinet, PT cabinet, outlet cabinet, contact cabinet, isolation cabinet.

Summary. Hello, dear, there is no electrical appliance that can replace the high and low voltage cabinet.

As the name suggests, the high and low voltage distribution cabinet is used in the power supply system for power distribution, control, metering and connection of power distribution equipment, the general power supply bureau, substation is used high-voltage switchgear, and then through the transformer step-down low-voltage side to the low-voltage distribution cabinet, low-voltage distribution cabinet and then to the distribution panel of each electricity, control box, switch box, which is through some switches, circuit breakers, fuses, buttons, indicator lights, instruments, A device that assembles a power distribution device such as a protection device such as a wire into a single device that meets the functional requirements of the design.

What kind of electrical appliances can replace high and low voltage cabinets?

Hello, very chain town is happy to have your question from me, I have seen your question, the current number of consultations is relatively large, and the answer is being sorted out, please wait a while

Hello, dear, there is no electrical appliances that can replace the high and low voltage cabinets, as the name suggests, is the power distribution equipment used in the power supply system for power distribution, control, virtual metering and connection cables, the general power supply bureau and substation are used to vibrate the high-voltage switchgear, and then lead out to the low-voltage distribution cabinet through the transformer step-down low-voltage side, and then the low-voltage distribution cabinet and then to the distribution panel of each electricity, control box, switch box, which is through some switches, circuit breakers, fuses, buttons, indicator lights, instruments, Wires and other protection devices are assembled into a single device to meet the functional requirements of the design of the power distribution device.

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