1. According to the voltage polarity, it can be divided into DC voltage sensor and AC voltage sensor. According to the applicable frequency range, AC voltage sensor can be divided into power frequency voltage sensor, variable frequency voltage sensor (or broadband frequency voltage sensor).
2. According to the measuring principle, it can be divided into resistance voltage divider, capacitance voltage divider, electromagnetic voltage transformer, capacitance voltage transformer, Hall voltage sensor and so on.
3. According to the output signal, it can be divided into analog output voltage sensor and digital output voltage sensor.
