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Product Overview
Partial discharge monitoring is now an internationally recognized and widely used technical means to diagnose the insulation condition of equipment. It is mainly used for routine inspection or on-site testing of high-voltage equipment in substations. It is used to monitor and analyze the partial discharge signals inside the gas-insulated switchgear (GIS) equipment, analyze them centrally through the data analysis system, display and output alarms, and then monitor and evaluate the operation status of the GIS equipment, so as to effectively avoid sudden accidents of the GIS high-voltage equipment. The large amount of local discharge data and the complexity of the site make its real-time monitoring a challenging task.
When local discharge occurs inside the cable, high-frequency current will propagate along the ground wire to the earth, and local discharge detection is realized by installing a high-frequency local discharge sensor on the ground wire to detect the high-frequency current signal. High-frequency local discharge sensors use the Rogowski coil method, in the toroidal core material around a multi-turn conductive coil, high-frequency current through the center of the core and the high-frequency alternating electromagnetic field caused by the coil will produce induced voltage. There is no electrical connection between the measurement loop of the sensor and the current under test, which is a non-intrusive detection method and does not require the equipment under test to be shut down. By using a localized line monitoring system to monitor monitoring and localized discharge trend activity, its development over time can be continuously observed so that high-voltage cables or cable accessories can be replaced in a timely manner before a fault occurs.
Product Features
* Good linearity and high precision; fast response speed, which can reach ns level.
* Frequency bandwidth, can work in the range of 100kHz ~ 50MHz.
* Opened and closed structure, easy to install.
* The waterproof level can reach IP68, which can be used indoors and outdoors.
Application
* Partial discharge online monitoring system, SF6 circuit breakers of various voltage levels, gas-insulated combined electrical appliances (GIS) equipment, cabinet switches, column switches, transformer equipment and primary high-voltage transformers.
Product Overview
Partial discharge monitoring is now an internationally recognized and widely used technical means to diagnose the insulation condition of equipment. It is mainly used for routine inspection or on-site testing of high-voltage equipment in substations. It is used to monitor and analyze the partial discharge signals inside the gas-insulated switchgear (GIS) equipment, analyze them centrally through the data analysis system, display and output alarms, and then monitor and evaluate the operation status of the GIS equipment, so as to effectively avoid sudden accidents of the GIS high-voltage equipment. The large amount of local discharge data and the complexity of the site make its real-time monitoring a challenging task.
When local discharge occurs inside the cable, high-frequency current will propagate along the ground wire to the earth, and local discharge detection is realized by installing a high-frequency local discharge sensor on the ground wire to detect the high-frequency current signal. High-frequency local discharge sensors use the Rogowski coil method, in the toroidal core material around a multi-turn conductive coil, high-frequency current through the center of the core and the high-frequency alternating electromagnetic field caused by the coil will produce induced voltage. There is no electrical connection between the measurement loop of the sensor and the current under test, which is a non-intrusive detection method and does not require the equipment under test to be shut down. By using a localized line monitoring system to monitor monitoring and localized discharge trend activity, its development over time can be continuously observed so that high-voltage cables or cable accessories can be replaced in a timely manner before a fault occurs.
Product Features
* Good linearity and high precision; fast response speed, which can reach ns level.
* Frequency bandwidth, can work in the range of 100kHz ~ 50MHz.
* Opened and closed structure, easy to install.
* The waterproof level can reach IP68, which can be used indoors and outdoors.
Application
* Partial discharge online monitoring system, SF6 circuit breakers of various voltage levels, gas-insulated combined electrical appliances (GIS) equipment, cabinet switches, column switches, transformer equipment and primary high-voltage transformers.
