1. The impact of lightning
The armor components of the control cable are all metal conductors, and if the power line is short-circuited or lightning hits the metal parts, a strong current will be generated to destroy the optical cable line equipment, and even casualties will occur in serious cases.
2. The insulation of the optical cable line is not good
If the control cable line is not insulated, the operation strength of the optical cable will be greatly reduced due to stress corrosion and static fatigue after the splice box enters the water or is in the case of moisture, and the optical cable will be broken in serious cases.
3. The influence of external forces
In many cases, line faults are caused by external forces. Because many communication optical cable lines are laid in the field, the general burial standards are deep below the formation, so it can not effectively avoid the damage of many external factors to the optical cable lines.
4. Fault at the line joint
It is easy to fail at the place of the line joint, because the optical fiber at the joint has no protection force for the original optical cable structure or the protection force has been significantly weakened, so the daily operation protection work can only rely on the splice closure to carry out, which leads to an increase in the probability of failure.
|
More on that
|
What do you need to pay attention to when grounding the electrical control cabinet?
1. Make sure that all equipment in the electrical control cabinet is well grounded, and use short and thick grounding wires to connect to the common grounding point or grounding busbar. Any control equipment connected to the inverter should be co-grounded with it, and likewise ground with short and thick wires;
2. Flat conductors are used, e.g. ...
|
|
Description of the models of Rittal cabinet air conditioners
Here are some of the models of Rittal cabinet air conditioners:
SK3368220 air conditioner RBT3368220 300 W, 220V
SK3368320 air conditioner RBT3368320 500 W, 220V
SK3368520 air conditioner RBT3368520 1000W, 220V
SK3368620 air conditioning RBT3368620 ...
|
|
How to set the temperature of the Rittal cabinet air conditioner SK 3332540
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 ...
|
|
Introduction to the process characteristics of Rittal cabinets
1. The cabinet door is off the ground 25. 5mm
2、2. The 5mm thick mounting plate has 23mm wide U-shaped curved edges on both sides, which makes the mounting plate stronger and easier to handle
3. The three cable introduction cover plates at the bottom of the box can be replaced by each other, which is easy to move, easy to import cables, and easy to open holes into the line
...
|
|
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.
2. Positioning of the cable management board, the direction of the cable management board should be determined before threading when positioning the cable management board, so that the cable management board does not need to twist the direction in the process of line management, and it can enter the ...
|
|
Rittal cables – common causes of cable failure
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 ...
|
|
Rittal Cables – What do you need to pay attention to when wiring industrial control cables?
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 ...
|
|
Rittal's enclosure – seven common faults in the distribution cabinet and their failure analysis
1. The circuit breaker cannot be closed
Causes:
1. The undervoltage coil does not work (the voltage is normal). Solution: Replace the undervoltage coil.
2. Press the closing button, and the closing coil will not work when it is powered up. Solution: Replace the undervoltage coil.
3. Cooperation...
|
|
What are the classifications of Rittal cabinets? What is the difference with a general cabinet?
1. What are the classifications of Rittal cabinets?
1. According to the function, it can be divided into: fireproof and anti-magnetic cabinet, power cabinet, monitoring cabinet, shielding cabinet, safety cabinet, waterproof cabinet, safe, multimedia console, file cabinet, wall-mounted cabinet.
2. According to the scope of application, it can be divided into: outdoor cabinets, ...
|
|
Some precautions should be taken in the installation and setting of Rittal air conditioning
The arrangement of the electronics in the cabinet
Note:
Condensation is dangerous! When the electronics are arranged in a Rittal cabinet, the cold air from the air conditioner must not flow directly to the live device. Cold air must not be allowed to flow directly to a hot exhaust gas stream from a live device such as a frequency converter. Because this will lead to ...
|
|
Rittal cabinets – daily maintenance methods for high and low voltage distribution cabinets
Complete set of electrical maintenance knowledge:
1. Low-voltage distribution cabinet
1. Regularly check whether there are traces of pest activity in each cabinet, and carry out trapping regularly.
2. Check whether the warning signs and maintenance signs are placed correctly.
3. Check whether the emergency tools and lamps are in order.
|
|
How do I set the temperature of my Rittal aircon by remote control or panel?
The temperature setting of the Rittal air-conditioner can be operated via a remote control or a panel. The specific steps are as follows:
1. Turn on the power of the air conditioner and press the "on/off" button on the remote control or the power switch on the panel.
2. Press the "Mode" button on the remote control or the ...
|
|
Reliability ceiling - Rittal and the maritime industry talk about China's "ship talk"
The Age of Discovery, which began at the end of the 15th century, linked the world and was one of the most important historical steps in the process of human civilization.
In the 21st century, in the development trend of global interconnection and China's intelligent manufacturing, the shipbuilding industry has ushered in high-energy development prospects.
Smart ships, low...
|
|
Air conditioner shows H1 fault code solution – Rittal
1. The air conditioner displays the H1 fault code - the reason
When the outdoor temperature is low and the humidity is high, the heat exchanger of the outdoor unit will be frosted after the air conditioner runs for a period of time, then the automatic defrost function will be activated, and the heating operation will be temporarily stopped for 5-10 minutes. Air conditioner heating defrost shows H1 which is normal ...
|
|
Rittal cabinet air conditioner fault code
The fault codes for Rittal cabinet air conditioners are: F1, F2, F3, FF, EH, EP, EL, SF, HC.
F1, F2, F3 represent improper use or failure of internal components;
FF stands for Regulation Circuit Fault;
EH stands for High Temperature Fault;
EP stands for Actuator Failure; ...
|
|
Rittal X Kongsberg | Smart ship "Wei" can be expected
Smart ships are a key area clearly supported by national policies. Driven by policy guidance and innovation, China has achieved phased results in the research and construction of smart ships. As the world's leading provider of enclosure systems, Rittal has a wide range of applications in the marine and port sectors.
|
|
Rittal cabinets – Q&A on the basics of high and low voltage distribution cabinets
What are the types of electric shocks?
Answer: Direct electric shock, indirect contact electric shock, induced voltage electric shock, lightning electric shock, electrostatic electric shock.
What are the organizational measures to ensure safety when working on electrical equipment?
Answer: work ticket system, operation ticket system, inventory site and comprehensive ...
|
|
Rittal cables – the difference between power cables and control cables
The power cable is used to transmit and distribute large-scale electrical energy in the main line of the power system, and the control cable directly transmits the electric energy from the distribution point of the power system to the power connection line of various electrical equipment and appliances. The rated voltage of power cables is generally 0.6/1KV and above, and the control cables are mainly 4 ...
|
|
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 ...
|
|
How to set the temperature of the Rittal air conditioner
1. Set the target temperature: the default temperature of the original factory is 35°C, you can press and hold the set button for more than 1 second after starting, the parameters start to flash, complete the temperature adjustment by pressing the UP and DOWN buttons, and after adjusting to the target temperature, press the set button to store the set parameters.
2. High temperature alarm: ...
|
|