DEVICE FOR INSULATION TESTING AND UNITIZED GENERATOR STATOR WINDING GROUND FAULT PROTECTION

摘要

Use: Increasing the reliability of the control and expansion capabilities. SUMMARY OF THE INVENTION: a device introduced stabilized source of alternating voltage coupled through a second shunt to the terminals connected to open delta secondary winding of the measuring transformer voltage, the first and second sample-and-storing device, a switch, and a measuring element additionally introduced connected to the second shunt transducer alternating voltage, the output of which through a series connection of a bandpass filter and shaper srednevypr straightening values ​​attached to input of the first sample-and-storing device, wherein the second sample-and-storing device input coupled to the output of the sensor constant current outputs of both sample and storage devices are connected via a switch to the input of an analog-digital converter, the two control inputs of sample-and-storing devices connected to the first a control output of the microcomputer, and the control input of the switch - to the second output of a control microcomputer which allows to calculate the value RH and Vi and tg 5. These values ​​are output from the computer to the executable sensitive element and a digital indicator. 1 yl. VJ VJ SP VI 8