What is a protective relay?
Answer: It can reflect the failure or abnormal operation of electrical equipment in the power system, and act on the device that trips the switch or sends out a signal.
What are the commonly used relays?
A: Current Relay, Voltage Relay, Signal Relay, Time Relay, Intermediate Relay, Differential Relay, and Gas Relay, etc.
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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: ...
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Rittal air conditioner alarm code parsing
1. A01 system message: open the cabinet door Rittal air conditioner Cause: the position of the door opening and closing is incorrect;
2. A02 system message: the temperature in the cabinet is too high: the refrigeration capacity is too low or small;
3. A03 System Message: Filter Monitoring Cause: Dirty Filter Diagnosis ...
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How to deal with the A02 fault reported by Rittal air conditioner
1. Check whether the filter screen of the Rittal air conditioner is blocked, if it is blocked, clean the lower filter in time.
2. Check whether there is any remaining freon in Rittal air conditioner, and if not, inform the professional maintenance personnel of the air conditioner to add fluoride in time.
3. Check the function of Rittal air conditioner.
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Rittal Cables - Causes and countermeasures of line faults of power cables
External damage: In the process of storage, transportation, laying and operation of cables, they may suffer external damage, especially the directly buried cables that have been run, and are prone to damage in the ground construction of other projects. Such accidents often account for 50% of cable accidents. In order to avoid such accidents, in addition to strengthening the cable ...
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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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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 cables – the basic structure of industrial control cables
1. Conductor
It is the main component of the product to play its use function, and it is to transmit electricity or information, that is, to transmit electric current or electromagnetic waves on the conductor. The conductor is the basic and indispensable main component of the product for the transmission of electric current or electromagnetic wave information.
2. Insulation ...
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Precautions for the use of Rittal electrical cabinets
1. When the electrical cabinet is used, the shell should be reliably grounded, and the electrical parts should be comprehensively inspected to eliminate the phenomenon of leakage and open circuit that may be caused by long-distance transportation, and check whether the voltage is consistent with the working voltage.
2. The electric cabinet is a non-explosion-proof oven, so it is flammable, explosive, volatile and corrosive.
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Rittal cabinet - the introduction and function of network cabinets
What is a Network Cabinet?
The network cabinet is a kind of rectangular cabinet composed of two parts: frame and cover, which can install switches, optical fiber adapters, optical fiber distribution frames and other equipment in a cabinet, with electromagnetic barrier, noise blocking, ventilation and heat dissipation, anti-vibration, anti-corrosion, 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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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 ...
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Rittal enclosures – what are the functions of the enclosure?
The function of the cabinet is security
Packing mission-critical IT equipment into lockable cabinets makes it easier for network administrators to limit the number of people who can flip out the cabinets.
The function of the cabinet is heat dissipation
Estimate how much heat your device is ...
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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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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 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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What are Rittal cabinets used for?
1. The cabinet is generally made of cold-rolled steel plate or alloy to store the computer and related control equipment, which can provide protection for the storage equipment, shield electromagnetic interference, arrange the equipment in an orderly and neat manner, and facilitate the maintenance of the equipment in the future. Cabinets are generally divided into server cabinets, network machines, etc.
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Rittal! Guarding the cabinet system with a "core".
As the "guardian" of the cabinet, the lock system is also an important accessory choice in the cabinet system. Locking systems include fasteners, locks, keys, handles, and cylinders, among others. The lock cylinder refers to the module that is replaced for different locks and keys.
01. Personalized configuration ...
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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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Rittal and the Fraunhofer Institute in Germany explain the implementation of the digital twin
How to promote the further development of smart factories and smart production?
The Rittal Hager plant in Germany illustrates how the smart factory can be accelerated with a digital twin in manufacturing!
As one of the world's modern cabinet production bases, the Hager plant has a production capacity of 24,000 square meters.
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Rittal Cables – What are the causes of faults in wires and cables?
1. External force damage. Judging from the operation analysis in recent years, especially in Haipu East, 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 civil engineering on directly buried cables ...
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