Friday 28 June 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.

Sometimes the current is lost if the insulating sheath is made from imperfect materials. Machinery and electric circuits are greatly affected when there is leakage of current due to imperfect cladding. Such a case can be controlled by frequently testing the insulating material to determine its perfectness. Testing the material frequently can help to catch problems in advance before injuries or device failure happens because of loss of current.

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 the same as the first burst of water that flows out of a hose when the tap is first opened. The flow of water is usually very high initially, but it rapidly drops as the hose becomes fully filled with water. In this case, it is the conductor becoming fully charged that leads to the drop in the 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.

There is a wide range of cladding testers in the market today. The various models of these products are made by manufacturers located in various countries. The quality of individual testers depends on the manufacturer of the equipment. Also, the various models of these devices in the market are used in different applications. There are testers that are meant for residential testing and those that are meant to be used in industries.




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