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: also called feed cabinet or distribution cabinet, is used to distribute electrical energy equipment (from the bus bar to each outlet), generally installed with circuit breakers, CT, PT, isolation knives and other components.
Bus contact cabinet: also called bus disconnection cabinet, is used to connect two sections of bus equipment (from bus bar to busbar), in the single bus segment, double bus system often use bus contact, to meet the user's choice of different operation mode requirements or to ensure that there is a selective removal load in the event of a fault.
PT cabinet: voltage transformer cabinet is generally installed directly on the bus to detect the bus voltage and realize the protection function. The internal voltage transformer PT, isolation knife, fuse and lightning arrester are mainly installed.
Isolation cabinet: It is used to isolate the bus at both ends or to isolate the power receiving equipment and power supply equipment, which can provide a visible endpoint for the operator to facilitate maintenance and overhaul operations. Because the isolation cabinet does not have the ability to break and turn on the load current, it cannot push or pull the handcart of the isolation cabinet when the circuit breaker is closed. In general applications, it is necessary to set up the interlock between the auxiliary contact of the circuit breaker and the isolation handcart to prevent the misoperation of the operator.
Capacitor cabinet: also known as compensation cabinet, is used to improve the power factor of the power grid, or for reactive power compensation, the main device is a group of capacitor banks connected in parallel, switching control loops and fuses and other protective appliances. Generally, it is installed in parallel with the inlet cabinet, and one or more capacitor cabinets can be operated in parallel. After the capacitor cabinet is disconnected from the power grid, because the capacitor bank takes a period of time to complete the discharge process, the components in the cabinet cannot be directly touched by hand, especially the capacitor bank; For a certain period of time after the power failure (depending on the capacity of the capacitor bank, such as 1 minute), it is not allowed to re-close, so as not to cause overvoltage and damage to the capacitor. When using the automatic control function, it is also necessary to pay attention to the reasonable distribution of the switching times of each group of capacitor banks, so as to avoid the situation that one group of capacitors is damaged and the other groups are rarely switched.
Metering cabinet: mainly used for metering electric energy (kWh), and high voltage, low voltage, generally installed with isolation switch, fuse, CT, PT, active energy meter (traditional meter or digital meter), reactive energy meter, relay, and some other auxiliary secondary equipment (such as load monitor, etc.).
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Rittal takes you through the efficient and accurate configuration of your enclosure system
In the recent Winter Olympics, short track speed skating star Wang Meng helped lock the first gold medal of the Chinese team in the Winter Olympics in advance with "My eyes are rulers". So what is the "magic weapon" that can help engineers refine the "sharp eye" of error-free assembly in the assembly of Rittal cabinet systems? ...
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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.
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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.
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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 ...
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Rittal Cables - What are the main contents of cables?
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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 ...
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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...
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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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Rittal cabinets – the operation process of power outages in low-voltage distribution cabinets
1. Normal power transmission operation process of low-voltage distribution cabinet:
1. All load switches are disconnected, confirm that the switches have at least one breakpoint;
2. Confirm that the power switch is in the disconnected position;
3. Send the power supply to the operation circuit, and the status indication is normal;
4. The incoming switch is - isolated ...
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The Rittal plastic handle replaces the standard lock with or without a secure semi-circular cylinder
Product Model 2485.100
Replace standard locks with or without a secure semicircular cylinder.
Type::C
Color: RAL 9011
A note on the order number: Not suitable for AE 1018.600
Lock: Cylinder: No safety cylindrical cylinder
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Rittal Cables – the scope of application for wires and 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, which are basically replaced by plastic power cables), rubber sheathed cables, overhead insulated cables, branch cables (replacing part of the busbars), ...
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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?
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Rittal cabinets – what are the common cabinet cable management processes?
First, the waterfall shape
This is one of the older wiring patterns that can sometimes be seen. It adopts the artistic image of "Huaguo Mountain Water Curtain Cave", and directly hangs the twisted pair from the module of the patch panel, and there is a very beautiful sense of hierarchy when it is neatly distributed (24-48 per layer).
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Rittal cabinets – Q&A on the basics of high and low voltage distribution cabinets
What are the advantages of microcomputer automatic monitoring?
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What is overvoltage?
Answer: Put the pair of insulated ...
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Rittal cables – the common code for cables
Usage code - not marked as power cable, K- (control cable), P- (signal cable);
Conductor material code - not marked as copper (can also be marked as CU), L- (aluminum);
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Rittal wall-mounted air conditioner with high energy efficiency Blue e+ 1.6-5.8 kW with an average energy saving of 75%
Rittal wall-mounted air conditioner Blue e+ 1.6-5.8 kW
Product model 3185.830
The energy-efficient Blue e+ wall-mounted cooling unit with capacities ranging from 1600 W to 5800 W. Energy savings of 75% on average due to the use of speed control components and heat pipe technology. There are carbon steel and ...
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What factors need to be taken into account when choosing a Rittal cabinet – outdoor enclosure?
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Rittal cables – the key point of TPE technology in wire and cable
1. TPE material has soft touch, high elasticity, mild texture, adjustable surface gloss and fog brightness, low smoke and halogen-free, phosphorus-free, excellent oil resistance, weather resistance, aging resistance, flex resistance, ozone resistance and chemical resistance.
2. The old TPE material can be simply recycled and recycled.
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What is the daily maintenance method of the air conditioner? - Rittal air conditioning
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Causes and solutions of low-voltage distribution cabinet alarms
1. It is not displayed at that time. Solution: Check whether the sample signal cable is not connected.
2. Whether the fuse core of the controller in the cabinet is burned out. Solution: Remove the burned out fuse core and replace it with a new one.
3. The voltage of the distribution cabinet is too high, and the overvoltage alarm. Workaround: Re...
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