BACK
Low and over voltage protector
Three - phased with phase sequence
detection
(to be used with a contactor)
Code x1109
3 N x 220 Volt 60 Hz
Dimensions (mm) (W x H x D)


Function:
- Together with a contactor, it stops the electrical supply to which it is connected, when the circuit network voltage has alterations that may damage the appliances or the equipment connected to the electrical circuit. Once the voltage gets normal again, the supply returns automatically (with some delay).
- It monitors the phase sequence permanently. Should the sequence get inverted, it does not connect the outlet.
- Suitable to be used for the overall protection of the industrial electrical circuit equipment.
Operation:
- The disconnection of supply is fully automated. there are two ways to connect the supply again:
- Automatic reconnection: the front switch is pressed upwards. Reconnection takes 2.5 minutes.
- Manual reconnection: by pressing the switch downwards, there is no reconnection. In case the phase voltage gets back to normal values, green leed
( Normal) flashes. For reconnection purposes, the switch should be pressed upwards and then downwards again.
- In case of inversion in the phase sequence, the unit is not reconnected and it shows the failure through a light signal in the front ( flashes between red and yellow of the tree leds that show phase). Taking 2 phases at random and inverting the connections between them (for protection inputs as well as for the contactor) the sequence gets normal again.
Installation:
- Install inside to a box with DIN rail conbined with a contactor ( with current capacity suitable for the load to be controlled).
- Take special precautions not to connect wrongly the same phase sequence at the imput of the contactor and the protector so that the correct operation of the load matches with the correct signal and operation of the protector.
- To be used indoors only.
- Before carrying out the installation,the general electric power switch of the entire premises must be shut off.
Wiring diagrams:
3 N 220 V - 60 Hz 3 N 220 V - 60 Hz
Technical features: 

• Supply voltage: 3 N 220 V - 60 Hz
• Protection range: 127 V ~ + 10 % ( 140 V ~) - 60 Hz. ( between each phase and neutral ).
- 127 V ~ - 20 % ( 101 V ~) - 50 Hz. ( between each phase and neutral ).
- Accuracy: 3 V ~.
- Over - voltage desconnection delay: maximum 10 miliseconds .
- Low - voltage desconnection delay: 1 second second.
- Reconection delay: It can be selected 2.5 minutes (automatic) or without reconnection (manual).
-Indicators:
- "Over" or "Low" voltage, 3 bicolor led (Red = over voltage; Yellow = under voltage ).
- “Normal” voltage ( on “Normal” green led ).
- A waiting reconnection, in "automatic" or "manual". Mode: green led flash for "normal".
- Incorrect phase sequence: three leds flash rancing from red and yellow.
- Oulet to triac ( terminals 2 and 4, NO ) ( terminals 2 and 1, NC ), I maximum = 2,5 A.
• class II device
• Indoore use
• Weigth: 130 gr.
• Rail DIN support.

Downloads: