MOV-20D182KTR

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TVS (Transient Voltage Suppressors) includes varistors, MOVs (metal oxide varistor) and thyristors. MOV-20D182KTR is an MOV (Metal-Oxide Varistor) which mainly trades with lightning-surge and can bear voltage up to 400V. It is utilized to protect electronic circuits from damages caused by sudden and extreme voltage changes.

MOV-20D182KTR is an ideal equipment for any routine device that requires protection of circuit against unexpected power fluctuations, spike or transits. This MOV is wide used in various products such as lightning protectors, power-line interface, power supplies and other communication appliances.

Overview of MOV-20D182KTR Application:

• An MOV-20D182KTR device is capable to bear a standard maximum surge current of 20,000 Amps and possesses energy ratings of 10 Joules, thus protecting the circuit from voltage transients and spike.
• MOV-20D182KTRsuitable to provide protection against AC-DC-transients for long-term.
• As a voltage clamping device, it uses a physics phenomenon known as dielectric absorption in which the energy of an incoming surge is absorbed by the dielectric material, preventing it from passing through and damaging the circuit.
• MOV-20D182KTR is usually connected across two conductors of an electrical circuit, thus protecting it from voltage transients.

Working Principles of MOV-20D182KTR:

• The MOV-20D182KTR utilizes a two-part construction – a variable resistance element consisting of zincoxide mixed with a binders, connected in parallel with a spark gap mechanism.
• The spark gap mechanism kicks in when the current level passes its holding current level; this triggers the operation of the device, and it quickly diverts the current path away from the protected circuit.
• MOV-20D182KTR can be used to redirect surge/transients to the ground or neutral line in the AC power line.
• MOV-20D182KTR generally connects between hot and neutral phase lines or between hot and ground line, depending upon its voltage ratings.
• In the event of large impulse voltage, spark gap mechanism redirects the current away from the protected circuit and then MOV element takes the remaining surge current.

Realizing the working principle of MOV-20D182KTR requires a brief understanding of its structure as well. It consists of two layers of thick zinc-oxide disks firmly placed in a ceramic case. To improve its performance, special mixture of polymers and varistors is also added between the plates. It also includes a spark gap mechanism, which is the combination of parallel connected electrodes and dielectric material, which operate as a shorting path and thereby redirects the surge current from the protected circuit.

In conclusion, MOV-20D182KTR utilizes a spark gap mechanism in order to protect electronic components from damaging voltage transients and surge. It is commonly found in lighting protectors, power/line interfaces, communication appliances and power supplies. Understanding and realizing the working principle of the device are important in comprehending its use and application.

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