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In HVT (Hollywood Technology), any voltage above 11 kilo-volts is considered to be inside the high profile range. It may be either alternating or direct current. Most of industries are provided using this array of voltages from the national grid although some generates their very own high voltage power using generators. Higher than normal voltages are generally stepped into some specific lower voltages, to perform their electrical machinery for example motors, heaters, HVAC systems, and others. For these industries, regular checks must be conducted by authorized personnel to gauge the condition of their equipment. Equipment testing is very crucial in determining the soundness of your machine so as to avoid equipment breakdown and large production losses. These tests also help in determining if a newly purchased devices are worth, before installing it. Most manufacturers use high voltage testing to test the insulation of these equipment before supplying them to their customers.

The advantages of applying high voltage insulation testing are likely to be looked down upon by a lot of industries, like a strategy of discovering the conditionality of these electrical equipment. This is often greatly due to the fact that much pressure and emphasis is usually placed on production activities on the tariff of proactive repair off the device. A reliable and efficient insulation with an electrical machine is most important for the correct operation each time. Since insulation of equipment degrades after a while, the respective electrical department for any industry should be regularly conducting regular check-ups for machines in their normal working schedule. Do this to even low and medium voltage systems.

Typically, a four stage process is followed. The stages are briefly described below:

In-process testing

Here is the most elementary process which can be done even about the readily installed equipment, so long as it’s not running. This procedure involves the use of a meggering instrument to evaluate the insulation integrity in the coils before it’s connected to phases, neutral, and earth. Sometimes, a multimeter doubles. Inter-winding and winding-to-body resistances are checked at this point. Therefore, the dielectric withstanding voltage and insulation resistance in the coil can be determined.

Ancillary Equipment Testing

This implies testing for insulation resistance and dielectric withstanding voltage for interconnecting cables, high profile bushings, busbars, and terminations. This could be conducted in the event the components are interconnected or separated.

Generator Assembly Test

In this case the generator is visually inspected. Cleaning is done along with the machine’s stability is additionally assessed. The pulse in the machine is observed at close range employing a special display instrument. The device is additionally meggered for insulation resistance and dielectric withstanding voltage test.

One of the factors to consider in testing equipment are; voltage and right testing equipment. For the most dependable results testing voltage needs to be sufficient to effectively measure the insulating resistance. However, it should not be too high to overstress the device insulation. The proper testing equipment which may effectively store results allows them to be held in your personal computer for archiving and analysis. This action saves serious amounts of reduces the likelihood of error.

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