The DFY-6 phase sequence protection counter is a multifunctional monitoring and protection instrument for three-phase power systems or three-phase electrical equipment. Integrating timing and counting, three-phase voltage display, overvoltage protection, undervoltage protection, phase loss protection (phase failure protection), and phase sequence protection (phase mismatch protection). Adopting Chinese LCD display, it has the characteristics of complete functions, stable performance, and easy operation.
The DFY-6 phase sequence protection counter can display the three-phase power supply voltage in real time, and can protect the contact control signal output by the circuit through relay output in case of overvoltage, undervoltage, phase loss, or phase error faults in the power supply, providing protection. It is a high-tech product that replaces traditional phase sequence relays and voltage relays.

Main functions
Display voltage: Display the current working voltage value.  
Overvoltage protection: When the voltage is too high or too low, cut off the power supply of the equipment.  
Phase loss protection: Cut off the power supply of the equipment when the three-phase power supply loses phase.  
Wrong phase protection: Cut off the equipment power supply when the phase sequence of the three-phase power supply is incorrect.  
Counting and timing: Record the number of times the device is started and the cumulative working time.  
Fault record: Record the number of occurrences and cumulative time of faults.

Main technical parameters
Rated control voltage Us: phase voltage AC-220V, line voltage AC-380V
Power supply voltage error: -15%~+10%
Output contact capacity: 2A/250VAC
Working environment: Temperature -10C~50C
Humidity 85%, no condensation
Frequency: 50/60HZ
Weight: 85 grams
Data retention time: 10 years
Maximum counting capacity: 999999 times
Maximum timing capacity: 9999 hours and 59 minutes
Maximum counting speed: 5 times/second
Input signal: AC/DC voltage signal
Dimensions: 48 × 48 × 90mm (length × width × height)

Outline dimension diagram: