Arrester online monitor function and performance
The arrester on-line monitor (hereinafter referred to as the monitor) is an instrument for on-line monitoring of the operating state of the arrester in the AC high-voltage power system. It integrates the mA meter, discharge counter, and fault alarm in one, and is connected in series in the surge arrester high voltage or ground loop. The meter's mA meter is used to monitor the full current (IO.rms) of the arrester under continuous operating voltage (UC). The arrester on-line monitor determines whether the arrester is damp or the internal components are abnormal or not; the discharge counter records the arrester. The number of actions at overvoltage. Effectively improve the operating reliability of lightning arresters and the stability of power grid operation.
The arrester on-line monitor complies with the provisions of JB/T10492 "Monitors for Intermittent Metal Oxide Surge Arrester". It is suitable for the supporting use of surge arresters with voltage levels of 500kV and below. The capacity of the arrester on-line monitor is compatible with other applicable conditions and the arrester used.
The monitor is mainly composed of signal sampling input, current measurement, action counting and protection circuit.
Under normal working conditions, the leakage current of the arrester under UC is directly indicated by the mA meter, and the measurement range is 0 to 5 or 0 to 6 mA. The non-linear indication scale of the mA meter facilitates a clear observation of minute current changes, clear readings, high resolution, and resistance to vibrations, etc.; there are different color segments of the current display area on the mA meter dial and red and green indicators on both sides for convenience. Determine the operating status of the arrester. The green light is on, and the arrester on-line monitor is working live. If the mA meter pointer is in the green area, it indicates that the current flowing through the arrester is within the normal range and the arrester is working properly; if the red lamp is flashing, the mA meter pointer is in the red area. If the weather is clear, the current flowing through the arrester exceeds the normal range. The surge arrester may malfunction at this time and need to be repaired or replaced.
The arrester on-line monitor (hereinafter referred to as the monitor) is an instrument for on-line monitoring of the operating state of the arrester in the AC high-voltage power system. It integrates the mA meter, discharge counter, and fault alarm in one, and is connected in series in the surge arrester high voltage or ground loop. The meter's mA meter is used to monitor the full current (IO.rms) of the arrester under continuous operating voltage (UC). The arrester on-line monitor determines whether the arrester is damp or the internal components are abnormal or not; the discharge counter records the arrester. The number of actions at overvoltage. Effectively improve the operating reliability of lightning arresters and the stability of power grid operation.
The arrester on-line monitor complies with the provisions of JB/T10492 "Monitors for Intermittent Metal Oxide Surge Arrester". It is suitable for the supporting use of surge arresters with voltage levels of 500kV and below. The capacity of the arrester on-line monitor is compatible with other applicable conditions and the arrester used.
The monitor is mainly composed of signal sampling input, current measurement, action counting and protection circuit.
Under normal working conditions, the leakage current of the arrester under UC is directly indicated by the mA meter, and the measurement range is 0 to 5 or 0 to 6 mA. The non-linear indication scale of the mA meter facilitates a clear observation of minute current changes, clear readings, high resolution, and resistance to vibrations, etc.; there are different color segments of the current display area on the mA meter dial and red and green indicators on both sides for convenience. Determine the operating status of the arrester. The green light is on, and the arrester on-line monitor is working live. If the mA meter pointer is in the green area, it indicates that the current flowing through the arrester is within the normal range and the arrester is working properly; if the red lamp is flashing, the mA meter pointer is in the red area. If the weather is clear, the current flowing through the arrester exceeds the normal range. The surge arrester may malfunction at this time and need to be repaired or replaced.
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