1) Fault phenomenon: The cause of this failure is the protection action. The high-voltage cabinet is equipped with protection against overcurrent, quick cut-off, gas and temperature.
2) Judgment method: The cause of the fault can be judged according to the relay card drop, remote signaling information, etc. In the high-voltage cabinet, there is a corresponding signal relay drop indication after the gas and temperature protection action. The overcurrent relay (GL type) cannot be operated to distinguish between overcurrent and quick break. In time-limited protection circuits, overcurrent and quick break are protected by two (JL type) current relays. When the relay is operating, the red light-emitting diode lights up, and the cause of the operation can be clearly determined.
3) Solution: The overcurrent relay action trips the switch because the line is overloaded. Before power transmission, the user should be negotiated to reduce the load and prevent it from tripping again after power transmission. When the quick break trips, the bus, transformer, and line should be checked. Find the short-circuit fault point and troubleshoot it before sending power. The over-current and quick-break protection actions allow the relay to be reset after the switch trips, which can be distinguished from temperature and gas protection by using this feature. Gas and temperature protection in the event of an internal fault or overload of the transformer. If the internal fault of the transformer causes heavy gas action, the transformer must be overhauled. If a new moving, refueling transformer has a light gas operation, the internal gas can be discharged and put into operation. The temperature protection action is because the transformer temperature exceeds the setting value. If the setting is correct, you must try to reduce the temperature of the transformer. It can reduce the ambient temperature by ventilation, and can also reduce the load and reduce the temperature rise of the transformer. If the setting value is small, you can increase the setting value. Through the above methods, the temperature contact is opened, and the switch can be powered.
|
More on that
|
Rittal cabinets – what do you need to pay attention to when tidying up your cabinets?
1. In principle, the power cord and network cable of the cabinet should be sorted out separately;
2. The placement of the equipment should be appropriate, avoid squeezing each other, avoid being too high or too low, and avoid being too close to each other;
3. If there are too many devices in the cabinet, the equipment should be numbered;
4. For each line ...
|
|
Common faults and solutions for Rittal cabinet air conditioners
If the indoor temperature is higher than the outdoor one, or the indoor temperature is higher than the set temperature, the air conditioner will not start;
Solution: Test the temperature comparison between indoor and outdoor to check whether the indoor temperature is too high.
The voltage of the air conditioner is unstable, and the compressor cannot be started normally.
|
|
Rittal cabinet - knowledge quiz of high and low voltage distribution cabinet (11-20)
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 ...
|
|
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
...
|
|
Rittal RBT side-mounted cooling unit cabinet air conditioning
Rittal RBT cooling units – the most economical option for you! If a limited budget makes you extremely cost-conscious, then RBT is the choice for your ambition. After large-scale assembly line production, as well as the excellent functions of the cooling unit itself, the RBT has achieved a very high ...
|
|
Rittal cabinets - judgment and handling of common faults in high-voltage switchgear
1. Judgment and treatment of sudden tripping fault of high-voltage switchgear during operation
1) Fault phenomenon: The cause of this failure is the protection action. The high-voltage cabinet is equipped with protection against overcurrent, quick cut-off, gas and temperature.
2) Judgment method: judging the cause of the fault can be based on the relay off, remote ...
|
|
Rittal cables – type descriptions for power cables
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...
|
|
Rittal cabinets – Q&A on the basics of high and low voltage distribution cabinets
Why use transformers to measure high voltage and high currents?
Answer:
(1) Expand the scope of use of the instrument. As long as the transformer with different transformer ratios and converter ratios is used in conjunction with a voltmeter with a full voltage of 100V and an ammeter with a full current of 5A, it will be ...
|
|
Rittal cabinets – the difference between racks, cabinets, and servers?
1. a rack
Rack: Installed in a standard cabinet, it is a functional server, so the standard cabinet is also called a "19-inch" rack. Rack is a more professional academic term, and most of the current policy documents mention "rack", and clarify the indicators such as single rack power and average shelf rate ...
|
|
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.
...
|
|
Rittal cabinets – precautions for high and low voltage distribution cabinets
1. The elevation or verticality of the distribution box (panel) exceeds the allowable deviation: it is caused by inaccurate measurement and positioning or uneven ground, and should be corrected in time.
2. The iron frame of the distribution box is not square: the iron frame is not straightened and aligned before the installation of the iron frame, or the position of the fixed point is deviated during installation.
|
|
Rittal presents a number of green and innovative sanitary cabinets at CBST
On April 7, 2023, the 11th CBST China International Beverage Industry Technology Exhibition was grandly held at the Shanghai New International Expo Center.
As a practitioner of the concept of "intelligent manufacturing" in Germany, Rittal brings many green and innovative sanitary cabinet systems and temperature control solutions.
|
|
Rittal cabinets – the composition and function of low-voltage distribution cabinets
The power distribution panel is mainly composed of incoming cabinets, outgoing cabinets, capacitor cabinets, metering cabinets, etc.
Incoming cabinet: also known as the receiving cabinet, is a device used to receive electrical energy from the power grid (from the incoming line to the busbar), generally installed with circuit breakers, CT, PT, isolation knives and other components.
Outlet cabinet: ...
|
|
Rittal cables support factory assembly and cabling
Imagine you walk into a large, well-maintained room with many cabinets and mounting plates waiting to be machined. Several staff members focus on assembly and wiring work. Another thing that will surprise you is the complete absence of paper – no folders crammed with circuit diagrams, and no work orders. This ...
|
|
Rittal enclosures – considerations for control cabinet transfers
First, the assembly process
The assembly process is the guarantee of the assembly work, because only the assembly according to the process can ensure the quality of the assembly work. The process is the standard and requirement of assembly, and only the assembly according to the process can ensure the safety of assembly. However, before the assembly, the technical ...
|
|
Rittal cabinets – what electrical components are included in the electrical cabinet?
1 Circuit breaker
Low-voltage circuit breakers, also known as automatic air switches, can be switched on and off manually, and can be used to distribute electrical energy, start asynchronous motors infrequently, and protect power lines and motors. In the event of a severe overload, short circuit, or undervoltage fault, the circuit can be automatically shut down.
2 Contactors
...
|
|
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 ...
|
|
Cable management components for Rittal's IT cabinets
An IT cabinet generally needs to arrange a lot of cables, including strong current cables for power supply equipment, optical fibers used for communication, and weak current cables for signal transmission. So many cables in a cabinet if not well packed up form a clutter of cables in the cabinet, and then ...
|
|
Rittal enclosures – how to choose the size of the cabinet?
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...
|
|
How to use Rittal cabinets
1. Tie the cable tie at the beginning of the root of the cable with a cable tie, if there are too many cables, the number of the network cable is divided into two or many parts from the center, but the demand ensures that each part of the network cable is connected, because the next step is simple.
2. According to ...
|
|
Contact
working hours
