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Editor to share with you what the meaning of UPS input and output distribution cabinet, I believe most people do not understand, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to understand it!

What is a power distribution box?

Power distribution box is a kind of distribution box, which generally refers to the power distribution of 380v voltage. the distribution box is divided into power distribution box and lighting distribution box, which is the last equipment of the distribution system. According to the electrical wiring requirements, the distribution box assembles the switchgear, measuring instruments, protective appliances and auxiliary equipment in a closed or semi-closed metal cabinet or screen to form a low-voltage distribution device.

In normal operation, the circuit can be turned on or off with the help of manual or automatic switches, and in case of fault or abnormal operation, the circuit can be cut off or alarm with the help of protective appliances, various parameters in operation can be displayed by measuring instruments, and some electrical parameters can be adjusted to prompt or signal deviation from the normal working state, which is often used in each generator, distribution and substation.

Classified according to the requirements of the power supply system:

(1) first-class distribution equipment, collectively referred to as power distribution center. They are centrally installed in enterprise substations and distribute electricity to subordinate distribution equipment in different locations. This level of equipment is close to the step-down transformer, so the requirements of electrical parameters are higher, and the capacity of the output circuit is larger.

(2) Secondary power distribution equipment is the general name of power distribution cabinet and motor control center. The power distribution cabinet is used in the situation where the load is scattered and the circuit is less, and the motor control center is used in the situation where the load is concentrated and there are many circuits. They distribute electricity from a circuit of the upper-level distribution equipment to the nearest load. This level of equipment should provide protection, monitoring and control of the load.

(3) the final power distribution equipment is always called the lighting power distribution box. They are far away from the power supply center and are scattered small-capacity distribution equipment.

Classified by structural features and uses:

(1) fixed panel switchgear, often called switchboard or power distribution panel. It is a kind of open switchgear with panel screen, the front has protective effect, the back and side can still reach the live part, and the protection level is low, so it can only be used in industrial and mining enterprises with low requirements for power supply continuity and reliability.

(2) Protective (that is, closed) switchgear refers to a low-voltage switchgear in which all sides are closed except the installation surface. The electrical components of the cabinet, such as switch, protection and monitoring control, are installed in a closed shell made of steel or insulating material and installed reliably or off the wall. There can be no isolation measures between each circuit in the cabinet, or grounded metal plates or insulating plates can be used for isolation. There is usually a mechanical interlock between the door and the main switch. In addition, there are protective table-type switchgear (that is, console), the panel is equipped with control, measurement, signals and other electrical appliances. The protective switchgear is mainly used as the power distribution device in the process site.

(3) drawer type switchgear. This kind of switchgear is made of steel plate to make a closed shell, and the electrical components in and out of the circuit are installed in an extractable drawer to form a functional unit that can complete a certain kind of power supply task. The functional unit is separated from the bus or cable by a grounded metal plate or a function board made of plastic to form three areas: the bus, the functional unit and the cable. There are also isolation measures between each functional unit. Drawer-type switchgear has high reliability, safety and interchangeability, is a more advanced switchgear, the production of switchgear, most of the drawer-type switchgear. They are suitable for industrial and mining enterprises and high-rise buildings that require high reliability of power supply as centrally controlled distribution centers.

(4) Power and lighting distribution control box. Most of them are closed vertical installation. Due to different occasions of use, the level of shell protection is also different. They are mainly used as power distribution devices in the production site of industrial and mining enterprises.

The use of power distribution box

The main results are as follows: (1) it is easy to manage and is beneficial to maintenance when a circuit failure occurs.

(2) Distribution box, distribution cabinet, distribution panel, distribution panel, etc., are complete sets of equipment for centralized installation of switches, instruments and other equipment.

(3) the commonly used distribution boxes are made of wood and iron plate.

(4) the use of the distribution box: of course, it is convenient to stop and transmit electricity, and plays the role of measuring and judging the stopping and sending of electricity.

What is the UPS I / O switchboard?

The UPS I / O distribution cabinet is used in the center of the power room, and it has the characteristics of perfect function, compact structure, stability and reliability. UPS is actually an uninterruptible power supply, and UPS I / O cabinet is a tailor-made equipment for the characteristics of UPS uninterruptible power supply. It can control power distribution units, rack distribution units and central power distribution, and can be easily managed.

UPS I / O cabinets cable tray series: metal trough type, ladder type, tray type cable tray, hot-dip galvanized cable tray, FRP cable tray.

The UPS input and output distribution cabinet includes an input distribution cabinet, an UPS and an output distribution cabinet. The output is stored by the cable input UPS,UPS alignment and becomes a stable three-phase power output. The output is outputted to the external load for power supply through the cable through the output distribution cabinet.

The utility model is characterized in that the connecting cable includes a neutral wire, and the cross section of the inner conductor of the UPS output cable is larger than that of the conductor in the phase cable. The in-and-out circuit breakers installed by the internal functional units are arranged in layers in order. The molded case circuit breaker adopts fixed installation, and the miniature circuit breaker adopts guide rail card installation. To ensure safe and convenient operation and maintenance, coupled with a highly modular design, for fast and simple installation and fault maintenance provides great convenience.

Characteristics of UPS input and output Distribution Cabinet

(1) Reliability: all components are standardized and tested by the manufacturer

(2) Safety: the front and rear panels are isolated to prevent personnel from coming into contact with the live parts.

(3) simplicity: due to the use of prefabricated components, the design and installation are very simple.

(4) easy to manage: with a perfect monitoring system, the computer room manager can control the running status of the equipment in real time, which is convenient for management.

Conditions of use:

(1) the ambient air temperature is not higher than + 40 ℃ and not lower than-5 ℃. The average temperature within 24 hours should not be higher than + 35 ℃.

(2) for indoor installation and use, the altitude of the use site shall not exceed 2000m. (3) the relative humidity of the surrounding air shall not exceed 50% when the high temperature is + 40 ℃, and a larger relative humidity is allowed at the lower temperature. (for example, 90% at + 20 ℃) consideration should be given to the occasional effect of condensation due to temperature changes.

(4) when the equipment is installed, the inclination with the vertical plane shall not exceed 5%. The equipment shall be installed in a place where there is no severe vibration and shock, and where the electrical components are not corroded.

Power distribution cabinet in power room

1. Input: city power access

2. Output: distribution cabinets in network computer room, UPS input, backup battery power supply, power facilities in power room

3. Fire protection linkage

Distribution cabinet in network computer room

1. Input: city power input, UPS output

2. Output:

UPS output: PDU of each cabinet, fire mainframe, monitoring video head

City power output: cabinet PDU, lighting, wall plug, precision air conditioning, cabinet air conditioning, exterior wall TV

Enter the empty capacity calculation method:

(1) three in and three out: phase current I=P/ (3mm 220V). The capacity of the main input empty open and output empty open is generally 1.3 million I, and the capacity of the bypass input switch is 1.5 million I. For example, for the host of 100KVA, the size of the main input null and output null is 1.3 "151" 196.3, then select 200A empty open and 250A bypass switch. Sometimes for convenience, the main input and output switches and bypass input switches all choose the empty open of the same capacity, and its value is the empty open capacity of the bypass.

(2) single input and single output: phase current I=P/ (220V). Input and output null is calculated in the same way as three-in-three-out, which is not discussed here.

(3) three-in-single-out: in the three-in-single-out UPS host, although the three-phase current of the main input is evenly divided, that is, the power of each phase is 1/3 of the total power of the UPS, considering the UPS fault, the UPS works in the bypass state, that is to say, the load is all hung on a certain phase of the three-phase input line. Therefore, for the triple-in-single-out UPS, the choice of the empty size of the input and output and bypass is the same as that of three-in-three-out.

General characteristic Table of UPS input and output Distribution

Standard technical parameter table of UPS input power distribution system

The above is all the content of this article "what is the meaning of UPS input and output switchboard?" Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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