| 摘要 |
FIELD: instrument engineering. ^ SUBSTANCE: device has high-voltage sound frequency signal generator, dc double-rowed potentiometer, high- and low-voltage compensation measurement units which are brought into circuits of primary and secondary windings of instrument voltage transformer to be calibrated. Measurement units have diodes and capacitors for working voltages. Dc dividers and sources are connected through galvanometers. ^ EFFECT: widened test voltage range. ^ 1 dwg |
