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Complete low-voltage equipment MNS 4000-6300A
Inflatable annular network cabinet
The inflatable ring main unit uses the insulating and ardent properties of the SF6 gas to form an insulating environment between the high -voltage components, which allows you to safely transmit current between high -voltage components under voltage.
Description
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The principle of work
The inflatable ring main unit uses the insulating and ardent properties of the SF6 gas to form an insulating environment between the high -voltage components, which allows you to safely transmit current between high -voltage components under voltage. If a malfunction occurs in the chain, such as a short circuit, overload, etc., high -voltage components are quickly triggered, turning off the faulty chain and ensuring the safety of equipment and lines. At the same time, elegaz will decompose under the influence of arcs with the formation of arcening gas, which accelerates the extinguishing of the arc and increases the disconnecting capacity of the equipment.
Structural composition
1. An air reservoir
This is the main component of an inflatable ring network cabinet. It is made of high -strength metal materials or other suitable materials. It has good tightness, withstands the internal pressure of the gas and prevents gas leakage. The insulating gas filled inside the gas tanker is usually the gas -hexftoride gas (SF6), which has excellent insulating properties and ardent properties, which can ensure the normal operation and safety of high -voltage components under voltage.
2. Great components
Including circuit breakers, load switches, insulating switches, fuses, etc. These components are installed in the air tank and, thanks to a reasonable layout and connection, provide control of the circuit, protection and turning on-off.
3. The drive mechanism
It is used to manage the process of delaying high -pressure components, usually located outside the air tank and connected to the components in the air tank through the transmitting device. There are two types of control mechanisms: manual and electric. The electric control mechanism can carry out remote control and automated control, which increases the efficiency of operation and reliability of equipment.
4. Corps
Being a corps of all equipment, it plays an important role in protecting, supporting and fixing internal components. The material of the case usually has good mechanical strength and protective properties and is able to withstand external blows, clashes and the effects of harsh environmental conditions.
Advantage
1. Khoor isolation properties
SF6 gas has excellent insulating properties, which can significantly reduce the distance between the high -voltage components, making a network cabinet with an inflatable ring more compact and occupying a small area, which is especially suitable for places with limited space.
2. General reliability
The sealed design of the air tank allows you to effectively prevent dust, moisture, salt spray and other pollution into the external environment, avoid corrosion and damage to high -pressure components and provide long -term stable equipment. And internal high -voltage components are reliably protected from external environmental influences, which reduces the frequency of refusal2.
3. does not require maintenance
Due to the stable chemical properties of the SF6 gas, it does not easily decompose and deteriorates, and the air tank has good tightness, so the inflatable ring network cabinet practically does not need to maintain and overhaul during normal operation, which reduces operational costs and loading for equipment maintenance ..
4. E highs safety indicators
The air reservoir is completely closed, and the high -voltage livestock parts are placed inside, which cannot be accidentally touched, which avoids electric shock. At the same time, the equipment is equipped with perfect protective devices, such as protection from overloading, overvoltage, grounding, etc., which further increases the safety indicators of the equipment.
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