In general terms Partial Discharges or 'PD' are minute electrical pulses or discharge occurring in a gas filled void or on a dielectric surface of a solid or liquid insulation system. The pulse or discharge only partially bridges the gap between phase to ground insulation. By using state of the art measurement equipment we are able to detect and locate the source of discharge.
The number of catastrophic failures of MV electrical switchgear is small in relation to the installed population. However, when a failure does occur, the consequences are often serious with respect to injury to personnel, damage to equipment and loss of availability of electrical supply.
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Electromagnetic
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Radio up to 80 MHz
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Light |
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Heat
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| Acoustic |
Ultrasonic |
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| Gases |
Various |
- Locates sources of potential failure
- Provides confidence in the continuing safety/reliability of the equipment
- Provides a technical basis for making financial decisions on 'replacement vs refurbishment'
