Selec 900VPR-2-280 / 520V数字电压保护继电器，自供电

Measuring Parameter: Under Voltage, Over Voltage, Under Frequency, Over Frequency, Phase Asymmetry, Phase Failure, Phase Sequence

Electrical Connection: 3Ø-3W, 3Ø-4W

Display 3 Digits Liquid Crystal Display Without Backlight

Time Delay: 0-99.9 sec

Unbalance Voltage:   5 - 99.9%

Under/Over Frequency: 45 - 65 Hz

Output Contact: 2 x 1C/O (SPDT)

Output Rating: NC: 3A@250V AC, NO: 5A@250V AC (Res)

Operating Voltage: 280 to 520V AC (L-L), 161 to 300V AC (L-N)