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

Thermal function: Due to the existence of thermal expansion and contraction, we should also pay attention to the thermal function of industrial control cables, that is, the temperature resistance level of industrial control cables, the heating and heat dissipation characteristics of cables for power transmission at working temperatures, current carrying capacity, short circuit and overload capabilities, the thermal deformation and thermal impulse resistance of the constituent materials.

1. Flashover fault: The industrial control cable is in a good insulation state at low voltage and will not have a fault. However, as long as the voltage value rises to a certain range, or a certain voltage continues to rise after a period of time, then it will instantly break through the insulator and cause flashover fault. 2. Long-term ...

1. It occupies a small area. Generally, it is buried in the soil or laid indoors, ditches, tunnels, with a small insulation distance between lines, no towers, less land occupation, and basically no land on the surface. 2. High reliability. It is less affected by climatic conditions and surrounding environment, and the transmission performance is stable and the reliability is high. ...

How much is the external design of domestic power distribution equipment products? Answer: Front panel type, cabinet type and box type, but also indoor type, fixed type and component fixed assembly, some products use drawer cabinets. Transmission circuits? Answer: Erected in the power plant step-up substation and ground ...

51 What are the factors that affect the degree of harm to the human body caused by electric shock? Answer: Factors such as the magnitude of the current, the duration of the current, the path of the current, the resistance of the human body and the frequency of the current. 52 Types of electric shock? Answer: Direct electric shock, indirect electric contact, inductive ...

1. Avoid light The server is required to operate in a constant temperature environment, and direct sunlight will increase the temperature in the computer room, which will damage the display and shorten its service life. When operating in IDC and ISP data centers, it is impossible to see a ray of sunshine. So, in ...

Usage code - not marked as power cable, K- (control cable), P- (signal cable); Conductor material code - not marked as copper (can also be marked as CU), L- (aluminum); Inner Sheath Code – Q-(Lead Packed), L- (Aluminum Cladding), H- (Rubber Jacket), V-(Polyvinyl Chloride ...

1. It can meet the needs of many electrical appliances, and relatively speaking, in the process of making industrial control cables, the relevant standards of various information in the process of dissemination are fully considered. In this way, it can ensure that the industrial control cable can meet the performance of many electrical appliances in daily work.

Closing faults can be divided into electrical faults and mechanical faults. There are two types of closing methods: manual and electric. Failure to close manually is generally a mechanical failure. Manual can be closed, electric can not close is an electrical fault. 1. Protection action: The protection action has been analyzed in front to trip the switch. ...

1. Maintenance content (1) Check the heat dissipation of the controller It is strictly forbidden to cover the controller with plastic or other materials; Leave enough space behind and on the sides of the controller (> 120mm); It is strictly forbidden to position the controller close to the heat source; It is strictly forbidden to put sundries on the top of the controller; Avoid over-the-top ...

1. The weight of the cable in the industrial control cable drag chain should be evenly distributed, so as to avoid accidents caused by uneven weight during operation, and the principle of distributing the cable is that the heavier one is located on both sides and the lighter one is located in the middle. All industrial control cables must be securely fastened to one end of the energy chain, so that ...

The development of sheet metal cabinet and chassis processing industry is getting bigger and bigger, which is due to the rapid development of society, the popularity of high-tech products, server cabinets, computer main chassis, equipment shells, etc. What are the advantages of sheet metal cabinet enclosures? 1. Cabinet and chassis products provide space for ...

11. What is the definition and classification of secondary circuits? Answer: The secondary circuit is used to monitor the measuring instrument, control the operation signal, all the low-voltage circuits of the relay and automatic devices are called the secondary circuit, and the secondary circuit can be divided into (1) current circuit according to the power supply and use; (2) Electricity ...

1. Press and hold the H4 button for 5 seconds to enter programming mode and ST will be displayed on the screen. 2. Click the H4 button to display 35 on the screen, then click the H2 button to display Cod on the screen, and then click the H2 button continuously to display from 0 to 22 on the screen. 3. Click H2/H3 and press ...

Rittal's products are: Rittal control cabinets: small cabinets (polycarbonate cabinets PK, junction boxes KL, compact control boxes EB, bus cabinets BG), compact control cabinets, plastic control cabinets KS, cabinet systems (subdivided into TS 8/SE 8 family), parallel cabinet systems...

What are the precautions for using current transformers? Answer: 1. The secondary side shall not be open when working; 2. One end of the secondary side must be grounded; 3. The polarity of the terminal should be paid attention to when connecting. What are the precautions for using voltage transformers? A:1. When working, its secondary side shall not be short-circuited ...

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. ...

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. Reliable quality assurance Choosing the right server and cabling cabinet is important, and the slightest negligence can lead to huge losses. No matter which brand of product it is, quality is the first thing that users should consider. 2. Load-bearing guarantee With...

1. Power failure: The power supply of the fan fails, such as the power cord is disconnected, the power plug is loose, etc., which will cause the current to fail to transmit normally, resulting in the fan stopping and rotating. 2. The temperature is too low: Some heat dissipation windbreakers have a temperature protection function, when the temperature is too low, the fan will automatically ...