1 Display voltage 2 Display electric current 3 Overload protection 4Losting-phase protection 5Centralized control

NA1960 Specifications

Main functions:

1 Display voltage: display current power voltage value

2 Overload and under voltage: when power voltage is too low or too high, cut off all the equipment power, and overload and under voltage value can be set.

3 Display electric current: display average three-phase electric current, can display A,B,C three-phase’s electric current by pressing each key.

4 Overload protection: when average three-phase electric current is more than setting electric current, cut off load to protect circuit.

5 Losting-phase protection: when controller checks lacking phase or three-phase electric current doesn’t remain in equilibrium seriously , cut off load to protect circuit.

6 Phase sequence protection: when three-phase sequence is wrong, cut off power.

7 Centralized control: controller has an interfaceRS485,to be convenient for centralized control.

8 Automatic recovery function: after cutting off load, can set an auto recovery times and interval time, switch on load again after a while. If trouble still exits after switching on load again, repeat that attempt for several times, if it still doesn’t work, it will need to be recovered manually.

Main Technique Index:

Range of Voltage Display: 300~450V

Range of setting voltage: 295~445V

Range of current display: 2.5~40A

Range of setting current: 2.5~40A

Time of overload:       1~20 seconds can be adjusted

Time of wrong phase:     1~20 seconds can be adjusted

Time of losting-phase:     1~20 seconds can be adjusted

Power supply:           9V AC(primary voltage is 380V±10%)

Operation environment:   Temperature -10°C~45°C, humidity ≤85%

Output contact rating:       2A/250V AC

Executive standard:    Q/320585 XYK 01

 PICTURES:

 production process 

voltage appliance protector