What are the main parameters of the transformer?
Answer: (1) rated voltage; (2) Rated current; (3) Rated capacity; (4) No-load current; (5) No-load loss; (6) Short-circuit loss; (7) Impedance voltage; (8) Winding connection diagram, phasor diagram and connection group number.
What is the thermal effect of a short-circuit current?
Answer: When a short circuit occurs in a circuit, a large short circuit current will cause the conductor temperature to rise rapidly, which is called the thermal effect of the short circuit current.
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Rittal cables – the main use of power cables
Power system: The wire and cable products used in the power system mainly include overhead bare wires, busbars (busbars), power cables (plastic cables, oil-paper power cables (basically replaced by plastic power cables), rubber cables, overhead insulated cables), branch cables, magnet wires and power equipment...
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Rittal cabinets – Q&A on the basics of high and low voltage distribution cabinets
What is the role of a DC system in a substation?
Answer: The DC system provides reliable DC power supply for control signals, relay protection, automatic devices and accident lighting in the substation, and also provides reliable operating power for operation. The reliability of the DC system has a significant impact on the ...
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What you need to pay attention to when choosing a Rittal-like cabinet and a Rittal-like electrical cabinet
In recent years, Rittal cabinets have been increasingly used in important equipment and projects at home and abroad. This brand from Germany Rittal cabinet has always been a tall image in the industry, the fine quality is fascinating, and the high price makes us prohibitive. With the agility of China's manufacturing industry...
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Rittal Temperature Control Portfolio – for new energy applications
With the continuous promotion of the dual carbon policy, the development of new clean energy such as wind power has been making great progress. China and United States are among the world's largest growing countries for wind energy equipment.
Wind turbines typically need to operate reliably for more than 20 years to deliver electricity to people. To this end ...
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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.
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Rittal cabinets – maintenance methods for motor control cabinets
1. Disconnect the power supply, check whether the rack of the control cabinet has reliable grounding, and make the grounding resistance not greater than 4Ω.
2. There are voltages of different properties on the control cabinet (DC 110V; Communication single-phase 220V; Three-phase communication), the circuit must be distinguished during maintenance to avoid short-circuit accidents.
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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.
2. Rainproof and dustproof ...
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Rittal cabinets – solutions for cooling network cabinets
1. Deliver the cold air to the network cabinet: Because the equipment in the cabinet needs the air conditioning the most.
2. Deliver the cold air to the front of the network cabinet: because the cold air can only enter the module server chassis from the front of the server to play a role in heat exchange.
3. Precisely adjust the ...
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Rittal cabinets – Q&A on the basics of high and low voltage distribution cabinets
What are the main differences between electronic control equipment and power distribution equipment products?
Answer: The function of electronic control equipment is mainly control, and the function of power distribution equipment is mainly transmission.
How much is the external design of domestic electronic control equipment products?
Answer: Control panel, control cabinet, control box and console ...
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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; ...
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Rittal cabinets – maintenance rules for network cabinets
1. Once a month (8 hours at the end of the month), and make a maintenance record.
2. Clean the gears of the whole machine to ensure the cleanliness and normal clearance of the gears.
3. Check the gap between the two gears at the punching device of the processing department and adjust the clearance.
4. Adjust the gap between each ink roller to ensure that ...
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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
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Rittal cabinet - judgment and treatment of sudden trip fault in operation of high-voltage switchgear
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. After the action of gas and temperature protection in the high-voltage cabinet ...
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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.
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 ...
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Rittal cabinets – an introduction to the installation steps and features of the control cabinet
The control cabinet is according to the requirements of electrical wiring to assemble switchgear, measuring appearance, maintenance appliances and auxiliary equipment in a closed or semi-closed metal cabinet or screen panel, and its arrangement should meet the requirements of the normal operation of the power system, easy to overhaul, and not to endanger the safety of people and surrounding equipment. Normal operation ...
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Rittal cabinet - judgment and treatment of high-voltage switchgear opening faults
Opening faults can also be divided into mechanical faults and electrical faults. Electrical faults mainly include open control loops, coil faults, auxiliary switch faults, etc.
1. Fault phenomenon: when the red light is not on, the electric cannot be opened, which is the fault of the auxiliary switch. When the opening coil burns out, there is smoke, odor, insurance ...
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Rittal cables - the key points for the purchase of wires and cables
1. Look at the packaging, the wires of the national standard are often better, neat, and have a sense of quality when you hold them.
2. To open the package and take a look at the wires inside, the wire requirements of the national standard wire 1.5——-6 square are required to be skin thickness (insulation thickness) is 0.7mm, and too thick is non-standard.
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Rittal enclosures – how to determine the quality of a sheet metal enclosure cabinet
1. Look at the material, you should choose a sheet metal chassis cabinet, and the steel plate must be thick, you can feel which ones are thick and which ones are thin when you knock them with your fingers. Its rugged enclosure protects the board, power supply and storage devices, and is resistant to voltage, shock, and dust.
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Rittal presents its modular data centre solutions
Now AI has been widely used in many fields, and while we enjoy the convenience brought by AI skills, we should also know that behind these AI skills are a huge amount of data processing and communication by weak servers, and then find the most efficient solutions.
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Five hidden details you didn't know about Rittal cabinets and common Q&A
Five details that are easy to overlook:
One of the hidden details: steel
The most basic thing of a cabinet is to look at the steel, the Rittal standard cabinet is made of section steel, there are many masters who understand the cabinet to understand, the steel plate must be thick, just knock it with your fingers. General ...
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