| 摘要 |
The system for analysing the state of resistance of an alternating voltage insulation containing a condenser connected serially with the analysed insulation resistance through a resistor, a source of direct measurement voltage connected serially with a measurement resistor, a voltage measuring unit and a comparing unit connected to reference voltage. The system is distinctive in that terminals of the measurement resistor (Rp), which is connected serially with the source of direct measurement voltage (Up) located in a condenser (C) shunting branch, are connected with inputs of the voltage polarisation control (1); this unit is at the same time connected with the opposite pole of the direct measurement voltage (Up); the terminals are also connected with the voltage measuring unit (2), while outputs of the voltage polarisation control (1) and the voltage measuring unit (2) are connected to appropriate inputs of the comparing unit (3) linked with the reference voltage (Uo); the output of the comparing unit (3) is the output of the whole circuit.<IMAGE>
|
