Ankerui APD300-L three in one wired partial discharge sensor collects ultrasonic waves, ground waves, ultra-high frequency partial discharge signals, etc. Magnetic installation

Product Overview

At present, metal enclosed switchgear is widely used in power systems, so the stability and reliability of switchgear operation are of paramount importance.ChineseDefects such as bubble gaps, impurities, spikes, etc. inside the insulation of piezoelectric equipment, under the action of strong electric fields, cause uneven distribution of electric fields inside the insulation of the switchgear. The electric field strength at the defect location will increase, which can easily lead to partial discharge that does not penetrate the entire insulation at that location. Partial discharge generally does not cause penetrative breakdown of the insulation inside the switchgear, but it can lead to local damage to the insulation medium. If it exists for a long time, it will cause damage to the electrical strength of the insulation device under certain conditions, ultimately leading to insulation breakdown inside the switchgear. For electrical equipment, partial discharge is one of the important causes of insulation aging, deterioration, and even damage, leading to equipment damage and power system accidentstimeIt is also a sign of equipment insulation integrity degradation. Therefore, monitoring and detecting partial discharge of electrical equipment is an important means to evaluate the insulation condition of the equipment, and it is also an effective measure to detect latent faults in the equipment, achieve fault warning, and avoid the occurrence of faults.APDseriesChineseThe partial discharge monitoring device of the pressure switch cabinet is achieved through the use of ultra-high frequency sensors（UHF）Ground wave sensor（TEV）And ultrasonic sensors（AE）Monitor and detect partial discharge signals during the operation of electrical equipment, in order to determine whether there are insulation hazards inside high-voltage electrical equipment and provide early warning，Ensure the safe and reliable operation of the power system.

technical indicators

Product installation and dimensions

APD300-LThe three in one wired partial discharge sensor adopts a strong magnetic adsorption installation method and is adsorbed on the cabinet wall in the cable room of the switchgear. The detailed dimensions of the product are shown in the figure, in unitsmm.

APD300-LSize chart

APD300-LThree in one wired partial discharge sensor

Wiring method

APD300-L

Three in one wired partial discharge sensorAPD300-LThe schematic diagram of the wiring terminal is as follows，Pin definition: port1Positive pole of power supply; Image port2: Negative pole of power supply; Image port3：RS485communicationA; Port4：RS485communicationB.communication interfaceRS485, baud rate9600.

AEThe amplitude exceedsAESimultaneously set the alarm valueAEThe number of discharges exceeds10Next time,AEAlarm flag position caused1；TEVThe amplitude exceedsTEVSimultaneously set the alarm valueTEVThe number of discharges exceeds10Next time,TEVAlarm flag position caused1；UHFThe amplitude exceedsUHFSimultaneously set the alarm valueUHFThe number of discharges exceeds10Next time,UHFAlarm flag position caused1.

APD300-Lterminal diagram