EQUIPMENT technical condition of grounding devices of traction substations DC

摘要

The invention relates to the field of electrical measurements and can be used to assess the state of grounding devices railway traction substations, DC electrified. Apparatus for determining the technical state of grounding traction substations DC device comprising a master oscillator, current and potential electrodes and the DVR with the meter voltage and blocks the microcontroller, ADC, keyboard, display, data storage, data transfer, the matching device, sensors of electric and magnetic field, a voltage meter, characterized in that it comprises a current sensor, whose output is connected to the microcontroller registrar. By recording the current in the drain installation elements determined current is closed through the grounding device to minus source. Multiple measuring device grounding potential and current in the drain installation are determined by the resistance values ​​of the grounding device with small and large currents. The proposed device makes measurements of resistance grounding traction substations DC device at various currents automatically calculates grounding devices resistance values ​​at different currents, transmits data to a PC, which enables to determine the resistance of the grounding device when flowing large currents without the use of additional measuring current source, therefore, improve accuracy and reduce costs in the determination of the resistance of the grounding device.