Rittal cabinets – Q&A on the basics of high and low voltage distribution cabinets

The model of the power cable 1. Use the capitalization of the first letter of Hanyu Pinyin to indicate the type of insulation, conductor material, inner sheath material and structural characteristics. For example, Z is used to represent paper (zhi); L stands for Aluminum (LV); Q is for lead (qian); F stands for fen; ZR stands for Flame Retardant (zura...

One. The nature is different Distribution box: There is a large amount of parameter data in the distribution box. It generally constitutes a low-voltage distribution box. Control cabinet: The control cabinet is to assemble the switch cabinet, measuring instruments, protection devices and auxiliary equipment in a closed or semi-enclosed metal cabinet or screen according to the requirements of electrical wiring.

First, the construction process Equipment unpacking inspection→ equipment handling, → cabinet (plate), basic installation, → above the cabinet (plate), bus preparation, → cabinet (plate), secondary circuit wiring, → cabinet (plate) test adjustment, → power transmission operation acceptance Second, the construction process 1. Equipment unpacking inspection, installation ...

1. External force damage. Judging from the operation analysis in recent years, especially in Haipudong, which is developing rapidly, a considerable number of cable failures are caused by mechanical damage. For example, the cable laying and installation is not standardized, which is easy to cause mechanical damage; Engage in direct burial on cables ...

1. Determine the size of the server, such as depth size, height size (how many U), and whether it is a 19-inch rack-mounted installation. 2. Choose a cabinet according to the installation space: If the server is a 19-inch rack-mounted installation, then a standard cabinet can be used. Root...

1. When the cables cross each other, the high-voltage cable should be below the low-voltage cable. If one of the cables is protected by a pipe or separated by a partition within 1m before and after the intersection, the minimum allowable distance is 0.25m. 2. When the cable is close to or crosses the thermal pipeline, if there are thermal insulation measures, the flat ...

How many types of protection devices are there for transformers? A: Overcurrent protection, current quick break protection, differential protection and gas protection. What are the requirements for relay protection? Answer: In order to be able to remove the fault correctly and quickly, it is required that the relay protection has sufficient selectivity ...

1. Check whether the filter screen of the Rittal air conditioner is blocked, if it is blocked, clean the lower filter in time. 2. Check whether there is any remaining freon in Rittal air conditioner, and if not, inform the professional maintenance personnel of the air conditioner to add fluoride in time. 3. Check the function of Rittal air conditioner.

External damage: In the process of storage, transportation, laying and operation of cables, they may suffer external damage, especially the directly buried cables that have been run, and are prone to damage in the ground construction of other projects. Such accidents often account for 50% of cable accidents. In order to avoid such accidents, in addition to strengthening the cable ...

The control cable has the characteristics of moisture-proof, anti-corrosion and anti-damage, and can be laid in tunnels or cable trenches. Power cables are used to transmit and distribute high-power electric energy in the main line of the power system, and the control cable transmits the electric energy directly from the distribution point of the power system to the power supply of various electrical equipment and appliances.

What is the material of the busbar? A: Copper busbar, aluminum busbar and steel busbar. What is the significance of busbar coloring? Answer: It can increase the radiation capacity, which is conducive to heat dissipation, and the allowable load current can be increased by 12-15% after coloring. ...

1. Buried laying The laying method of laying the cable immediately underground is called buried laying. The buried cable must be armored cable and anti-corrosion coating protection cable, and the bare cable cannot be buried. Generally, the depth of the cable trench shall not exceed 0.9m, and the buried laying shall be paved ...

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The Rittal compact AE cabinet with its new internal expansion rails –Supplementary internal expansion for machining – Can be done in a time-saving manner in the side, bottom and top cover areas Installation – Two rows of adjustable TS 8 system holes for installation capacity Outer space...

What are the main technical parameters of the fuse? Answer: A. Rated voltage, B. Rated current, C. Breaking capacity, D. Melting characteristics, E. Overvoltage. What are the main products of low-voltage power distribution equipment? Answer: Low-voltage distribution panels, switch cabinets, switch boards, lighting boxes, power boxes and electrical ...

What is a busbar? Answer: In the voltage distribution devices at all levels of power plants and substations, the wires connecting engines, transformers and various electrical appliances are called busbars. What is the classification of busbars? Answer: soft bus (mostly used in outdoor power distribution room with high voltage) and hard bus (low ...

Alarm code: A01 System message: Open the cabinet door The cause of the Rittal air conditioner: the opening and closing of the door is not in the correct position Diagnostic method: Check the changing position of the door and, if necessary, the connection status Alarm code: A02 System message: The temperature in the cabinet is too high ...

1. Determine the material of the distribution box First of all, from the material selection, the distribution box on the market is divided into plastic and metal two materials, metal material is durable, strong resistance, but it is easy to rust and corrode when encountering water stains; Although plastic is light and cheap, it is not very durable. Therefore the root ...

What is a protective relay? Answer: It can reflect the failure or abnormal operation of electrical equipment in the power system, and act on the device that trips the switch or sends out a signal. What are the commonly used relays? A: Current Relay, Voltage Relay, Signal ...

What is eddy current? What are the harms of eddy currents? Answer: When an alternating current is passed through a wire, an alternating magnetic field is created around the wire. An induced current is generated inside the whole conductor in an alternating magnetic field, and because this induced current forms a closed loop inside the whole conductor, ...