Thursday, June 27, 2019

Useful And Essential Facts About Insulation Tester

By Barbara Morgan


In a perfect world, current that is sent along a conductive wire is supposed to reach the intended destination in full. However, this does not happen in the real world because some of the current is usually lost along the way. There are different reasons why the current gets lost along the way. In an attempt to prevent the loss of current, resistant sheathing is used to insulate conductive wires. Here are facts regarding Insulation tester.

In some cases, imperfections in cladding material allow current to leak and get lost to the surrounding. The leaking current can cause a lot of problems to the machinery and electrical circuits. That is why in order to maintain safety, the cladding needs to be tested on a regular basis. Doing this helps to identify problems before they cause equipment failure or harm people who handle the equipment through electrocution.

This testing process is done using a pieces of equipment referred to as an cladding tester. The equipment tests the integrity of the cladding by measuring its resistance to the flow of current across it. If the cladding is of high quality, it means that very little current will escape through it. On the contrary, if the cladding offers very little resistance, then a higher amount of current will flow across it.

Testers measure various kinds of current when they are used to measure the quality of cladding a material is made of. The three main kinds of currents measured are capacitive, absorption, and leakage currents. Capacitive current refers to the initial burst of current that happens when voltage gets first applied to conductors.

Capacitive current is similar to the first burst of water from a hose. The initial burst is usually very high, but it then reduces very fast. The drop is caused by the fact that the hose becomes filled with water after a sort while and the flow of water becomes steady. In the case of electricity, the conductor becomes fully charged, hence the drop in current flow.

Absorption current starts out very high and drops just in the same way capacitive current does. However, what differentiates the two kinds of current is the fact that absorption current drops much slowly. The storage of potential energy within the cladding is responsible for the gradual drop in absorption current. In cladding testing using time resistance method, absorption current is a very important part.

Leakage current is also referred to as conduction current. This is a small, steady current that is present both over and through the cladding. If the leakage current increases over time, it implies that the cladding is deteriorating over time too. Insulation test meter usually indicates these increase in leakage current as decrease in resistance.

Currently, different types of cladding testers are available in the market. Different manufacturers from different countries produce these devices. The manufacturer of the equipment largely influences its quality. Different models of cladding testers are used to perform different functions. For instance, some testers are designed to perform testing in residential settings while other testers are meant to be used for testing equipment in industries.




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