NFC-T electric switch

1.NFC-T electric switch mainly applied to the impact load , 2 it need to quikly switching the electrical load site of capacitor

 NFC-T electric switch  mainly applied to the impact load , it need to quikly switching the electrical load site of the capacitor , such as : welding machine , steel rolling , port suspended , elevator , inverter frequency furnace and other load change site .

This capacitor switch has the high following speed , and can be effective compensation the impact load , the response time is 10~20miliseconds , effective saving the energy , it is the irreplaceable product of AC contactor and combination switch .

The capacitor switch modual is using high-speed CPU , pulse transformer triggering , it has multiple protection schemes and 20ms fast switching technology , to enssure the trigger modual controlled thyristor is voltage zero-crossing connected , current  zero-crossing broken , and do not produce switching surge .

Technology parameter

Voltage  220V±20%  50Hz  

Response time ≤20ms

Control method

Manual control: the passive nodes input(No 3,4 terminal of the machine)

Automatic control 12V/DC,10mA(input the No 5,6,7 terminal of the machine)

Auxiliary contacts  5A,250V     the passive nodes output(the indicator used to control capacitor)

Communication interface RS 485  MODBUS protocol

Terminal description  

Terminal	Functions	Conditions	Description
1	Power supply	Input	1.L line(live wire) 2.Nline (null wire).
2
3	Manual control	Input	Passive nodes output,to use manual switching the switch .
4
5/6	Automatic control	Input	No5/6 terminal point short circuit ,is 12V+ input. No 7 terminal is 12V—input , connected the output part of compensation controller .
7
8	Auxiliary contacts	Output	output is used to control the indicator of controller in the distribution board. And it needs to connect the outlet supply power.
9
10	485 communication	Output	A
11			B
12			485 signal ground

NFC-T electric switch