| 摘要 |
THE INVENTION IS BASED ON A VOLTAGE SENSOR FOR MEASUREMENT AND PROTECTION PURPOSED, FOR USE WITH MEDIUM-VOLTAGE SWITCHGEAR, WITH A RESISTIVE VOLTAGE DIVIDER POTTED IN CASTING RESIN, AND WITH A SURGE VOLTAGE PROTECTOR CONNECTED THERETO AND WITH AN EARTH CONNECTION. THE VOLTAGE SENSOR IS DEVELOPED IN SUCH A WAY THAT IT CAN BE USED IN DIFFERING MEDIUM-VOLTAGE RANGES, IS OF A COMPACT DESIGN AND IS EASY TO ASSEMBLE. THE PROPOSED SENSOR COMPRISES A VOLTAGE DIVIDER (2) FORMED BY A HIGH-RESISTANCE HIGH-VOLTAGE RESISTOR (R1) AND A PLURALITY OF LOW-VOLTAGE DIVIDER RESISTORS (R2; R3) WHICH ARE SERIES-CONNECTED THERETO, EACH OF THE RESISTORS BEING CONNECTED ON THE OUTPUT SIDE TO A CONTACT (7.1, 7.2, 7.3) DISPOSED ON THE OUTSIDE OF THE VOLTAGE SENSOR, IN WHICH THE SURGE VOLTAGE PROTECTOR (3) IS ALSO DISPOSED PARALLEL TO THE LOW-VOLTAGE DIVIDER RESISTORS (R2 AND R3).(FIG. 1)
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