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 stop working to avoid excessive cooling. This usually occurs in low-temperature environments, such as in winter or in air-conditioned environments.
3. Lubricating oil is dry: it may be that the lubricating oil is dry, try to rotate the fan by hand, if there are signs of slight movement or feel that the rotation resistance is very large, it means that the fan is no problem, but the lubricating oil is dry, at this time, the fan will be removed, generally there are stickers on the reverse side, take him off, you can see the shaft of the fan, add some lubricating oil such as engine oil or something, and then rotate the fan several times by hand, feel that there is no resistance or the resistance is very small, and then install it back to almost solve the problem.
4. The speed does not reach the normal speed required for work
5. Fan controller failure: Some advanced cooling fans are equipped with a controller, if the controller fails, such as the circuit board is burned out or the circuit components are damaged, etc., it will cause the fan to stall.
6. Overload protection: When the cooling fan is working, if the load is too large, such as overclocking or overvoltage, the fan power supply current may exceed the rated value, then the overload protection will be triggered, and the fan will stop to protect the circuit.
7. Do not pay attention to cleaning and maintenance: because the environment in which the cooling fan is located is relatively dusty, or used for a long time, and we do not clean it much, it is very likely that the cooling fan power supply cannot rotate because of too much dust, which is mainly due to the fact that with more and more dust, the heat accumulation inside the cooling fan is also increasing, and there will be poor internal heat dissipation of the power supply, resulting in unstable power supply and unstable fan speed, so we should pay attention to the maintenance of the cooling fan and clean it regularly.
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Rittal cabinets – Q&A on the basics of high and low voltage distribution cabinets
Power distribution circuits?
Answer: From the regional substation to the substation of the electricity unit or the power supply line of the city and township, it is the line used to distribute electric energy.
Power lines can be divided into according to the erection method?
A: Overhead power lines and cable lines.
...
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As a commonly used box in Rittal, many users do not understand the material and structure of this series of boxes.
Now I would like to introduce the Rittal explosion-proof enclosure
Apply:
– Zones 1 and 2 or Zones 21 and 22 according to 94/9/EG
– Ambient temperature range: -30°C.
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With the help of continuous favorable policies, China's new energy vehicles have maintained rapid growth this year. According to data from the China Association of Automobile Manufacturers, the production and sales of new energy vehicles reached a new high in October, with a year-on-year increase of 87.6% and 81.7% to 762,000 and 714,000 units, respectively.
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The Rittal cabinet principle
Rittal is a Germany company that specializes in the manufacture of all kinds of cabinets. It is famous for its reasonable design and guaranteed quality. Now there are many imitations in China, and imitation Rittal is also popular.
The working principle of the Rittal cabinet is to cut off the inrush current of the wire itself.
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What factors need to be taken into account when choosing a Rittal cabinet – outdoor enclosure?
1. Safety: As the carrier of electrical equipment, the outdoor cabinet must have excellent structural design, solid materials, and firm bottom fixation to meet the requirements of strong typhoons, strong rainstorms, and even strong earthquakes. At the same time, the cabinet should have anti-leakage, anti-short circuit, anti-cut and other requirements.
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What are the common cable management methods for Rittal cabinets – network cabinets?
1. The network cabinet distribution frame is fixed in place, the panel paper is loaded into the distribution frame on the front, and the tray is installed on the back.
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Rittal enclosures – what should I consider when choosing a cabinet?
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With...
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▲ GGD AC low-voltage distribution cabinet:
(1) Use
GGD type AC low-voltage distribution cabinet is suitable for substations, power plants, factories and mining enterprises and other power users AC 50Hz, rated working voltage 380V, rated working current 1000-3150A distribution system, as a power ...
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What are the main problems in the practical application of Rittal cabinet air conditioners on the client?
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The solution to the A17 fault reported by the Rittal cabinet air conditioner
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Check that the power supply voltage is 220V, normal; Detect that the battery voltage of the remote control is 3V, which is normal; Measure the fuse resistance value of the air conditioner compressor with a multimeter as infinity, which is normal.
2. The Rittal air conditioner does not start when it is turned on, and the display is not started.
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Conductor material code - not marked as copper (can also be marked as CU), L- (aluminum);
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Rittal cabinets – Q&A on the basics of high and low voltage distribution cabinets
What are the main technical parameters of the fuse?
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Rittal outdoor cabinet + temperature control solutions for you to provide comprehensive protection
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