Through continuous big data analysis of 200,000 cabinet air conditioners installed and operated on the market, Rittal found that the main problems in the actual application of air conditioners on the client are as follows:
1. Lack of maintenance, resulting in the blockage of the air conditioner filter, and then the air conditioner stops running or leads to secondary failures such as copper pipe fracture and compressor damage.
2. The operating ambient temperature of the air conditioner is too high. For example, on the driving of an aluminum plant, the operating temperature of the air conditioner is about 60 degrees, and the ambient temperature of the driving electrical cabinet of the aluminum plant is sometimes higher in summer, which will cause the air conditioner to go down, which will bring great safety hazards to the operation of the vehicle and the safety production of the aluminum plant.
3. If the three-phase power supply of the air conditioner is reversed, if the air conditioner does not have the phase sequence protection function, it will cause the circuit board of the air conditioner to burn out.
4. The energy consumption of air conditioning is too high, and air conditioning is a high energy consumption unit in the workshop, which has huge room for improvement in reducing costs and increasing efficiency of the factory.
5. The drain pipe is clogged or too long, resulting in condensate leakage of the air conditioner, which in turn will cause the risk of short circuit in the electrical circuit in the cabinet.
6. The cabinet is not well sealed, resulting in a large amount of condensate water generated by the air conditioner, if the condensate water is too strong in the case of excessive wind pressure, it will produce flying water, and it is extremely easy to produce short circuits in the electrical circuit, and the risk of fire and shutdown will occur.
7. The temperature of a hot spot in the cabinet is too high, resulting in the accumulation of heat in the hot spot and the surrounding area, causing equipment or component failure.
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Rittal cabinets – Q&A on the basics of high and low voltage distribution cabinets
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.
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Rittal cabinets – maintenance methods for low-voltage distribution cabinets
1. The purpose is to ensure the normal and safe operation of the low-voltage distribution cabinet and the control cabinet of each equipment.
Second, the scope is suitable for the low-voltage distribution room distribution cabinet, and the control cabinet of each equipment shall be implemented with reference to the relevant provisions according to the specific situation.
Third, the responsibility of the mechanical and electrical installation and maintenance engineering department maintenance team every six months ...
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Rittal cabinets – the specifications of server cabinets
Server cabinets have requirements in terms of depth, height, and load-bearing capacity. There are three heights of 2.0 meters, 1.8 meters and 1.6 meters; The width is 800mm, 700mm or 600mm; There are three depths: 700mm, 800mm and 900mm.
Can be configured: special fixed pallet, special ...
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A basic introduction to a very popular explosion-proof box in Rittal
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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Rittal cabinets – Q&A on the basics of high and low voltage distribution cabinets
What are the relay protections of small and medium-sized substations?
A: A overcurrent protection; B. Current quick-break protection; C. Time-limited current quick break protection; D Low voltage protection.
What is the classification of substation monitoring system?
A: Manual monitoring, automatic monitoring of telecontrol devices and micro-...
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Common faults and troubleshooting methods of oil coolers - Rittal cabinets
Fault symptom 1: insufficient cooling capacity
Cause analysis
(1) The room or box is not sealed or the thermal insulation performance is poor
(2) The evaporator frost is too thick
(3) The efficiency of the compressor deteriorates
(4) The expansion valve is too large or too small
(5) There are more ...
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What is the difference between a control cabinet and a distribution box?
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.
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The solution to the A17 fault reported by the Rittal cabinet air conditioner
1. The Rittal air conditioner does not start when it is turned on, and the A17 is faulty.
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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Some advantages of the Rittal compact AE enclosure
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...
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Rittal cables – common faults in power cables
Short-circuit fault: There are two-phase short circuits and three-phase short circuits, which are mostly caused by hidden dangers left in the manufacturing process.
Grounding fault: one or more cores of the cable break down to the ground, and the insulation resistance is lower than 10kΩ is called low-resistance grounding, and higher than 10kΩ is called high-resistance grounding. Mainly due to cable corrosion, lead ...
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Rittal cables – what are the common cable faults?
Wire surface marking - according to the national standard, the wire surface should have the manufacturer name, product model and rated voltage continuous marking. This is conducive to finding the manufacturer in time when problems occur during the use of wires, and consumers must pay attention to this when purchasing wires. At the same time consume ...
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Analysis of the causes of the alarm code of the Rittal cabinet and how to deal with it
A01--- Rittal cabinet control cabinet door opens
View: Look at the door switches in the Rittal cabinet.
Solution:
(1) Adjust the position of the door switch.
(2) Check whether the wiring method is correct (passive normally closed point at 1.2 points).
A03 --- Filter Monitor ...
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How many fault codes does a Rittal cabinet air conditioner have?
There are a total of 9 fault codes for Rittal cabinet air conditioners,
They are: F1, F2, F3, FF, EH, EP, EL, SF, HC.
Among them, F1, F2, and F3 represent improper use or failure of internal components;
FF stands for Regulation Circuit Fault; EH stands for High Temperature Fault;
E ...
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Rittal cabinets – Q&A on the basics of high and low voltage distribution cabinets
What are the classifications of different electrical experiments according to their roles and requirements?
A: It can be divided into insulation test and characteristic test.
What are the factors that affect the degree of harm to the human body of electric shock?
Answer: The magnitude of the current, the duration of the current, the path of the current, the resistance of the human body, and the ...
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Rittal enclosures – classification of HVAC functions and system parameters
Heating, also known as heating, refers to the supply of heat to a building, insisting on a certain indoor temperature.
Ventilation – the process of feeding and removing air into a space by natural or mechanical means.
Air conditioning - (referred to as air conditioning) is to meet the requirements of production and life, improve labor ...
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Rittal cabinets - knowledge quiz on high and low voltage distribution cabinets (31-40)
31. How many modes are there for the three-phase neutral point operation of China's power system?
Answer: 1. Three-phase system with no grounding (insulation) at the neutral point; 2. Three-phase system in which the neutral point is grounded through the arc suppression coil; 3. Three-phase system with direct grounding at the neutral point.
32. Use current transformers ...
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How do Rittal cabinets be combined?
1. The power cords of the two cabinets are connected to the power socket at the rear of the cabinet.
2. The RS232 interface of the two cabinets is connected together with a communication cable.
3. Lock the door of the main cabinet, and turn on the power from the cabinet and the main cabinet in turn.
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The principle and use of Rittal cabinets
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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Rittal cabinets – Q&A on the basics of high and low voltage distribution cabinets
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 ...
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Rittal cabinets – Q&A on the basics of high and low voltage distribution cabinets
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 ...
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