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Cyprus Acrel APD100 UHF Partial Discharge Detector
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Product Description
Overview
At this stage, metal-enclosed switchgear is widely used in the power system, so the stability and reliability of the switchgear operation is the top priority. Defects such as bubble gaps, impurities, spikes and other defects in the insulation of medium-voltage electrical equipment make the electric field distribution inside the insulation of the switch cabinet uneven under the action of strong electric field, and the electric field strength in the defective part will increase, which will easily lead to the discharge of the part that does not penetrate the entire insulation, that is, partial discharge.
Partial discharge generally does not cause the penetrating breakdown of the internal insulation of the switchgear, but it can lead to local damage to the insulating medium. If it exists for a long time, it will cause the destruction of the electrical strength of the insulation device under certain conditions, and eventually cause the insulation breakdown inside the switchgear.
For electrical equipment, partial discharge of electrical equipment is one of the important reasons for the aging or deterioration or even damage of its insulation, resulting in equipment damage and power system accidents, and it is also a sign of degradation of equipment insulation integrity. Therefore, the partial discharge monitoring of electrical equipment is an important means to evaluate the insulation status of the equipment, and it is also one of the effective measures to find the latent fault of the equipment to achieve fault warning and avoid the occurrence of failure.
The APD series medium-voltage switchgear partial discharge detector device detects the partial discharge signal of the electrical equipment during operation through ultra-high frequency sensors (UHF), ground wave sensors (TEV) and ultrasonic sensors (AE), so as to judge whether there are hidden insulation hazards inside the high-voltage electrical equipment, give early warning, and ensure the safe and reliable operation of the power system.
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Dimension & Installation
The APD100 UHF partial discharge detector adopts a guide rail (DIN35mm) installation method and can be installed in the secondary instrument room of the switchgear; The UHF sensor adopts a magnetic suction installation method and is adsorbed on the wall of the switchgear cable room. The detailed dimensions of the product are shown in the figure, in mm.
APD100 Partial Discharge Detector
UHF Sensor
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