Applications
The Protector can be used to protect for :-
  • Under voltage
  • Over voltage
  • Start up standby generators
  • Operation of mains failure units
  • Switching standby hybrid supplies
  • Protecting computer supplies
  • Where close control is required. 
  • Gensets - To monitor correct operation of the AVR (Automatic voltage regulator) and excitation system.
  • Motors - Some electric motors are voltage sensitive, and can overheat and burn out when operated at low voltage
  • UPS supplies - When the main A. C. supply falls outside the acceptable operating voltage window, the relay can initiate a changeover to an alternate or standby supply
 
Features
  • Adjustable setpoint
  • Adjustable Time Delay
  • Internal differential ( factory Settable )
  • LED trip indication
  • 2 pole relay contacts
  • Energize/De-energize function swapping
  • Auto Reset
 
Product Function
Over Voltage models :When the monitored voltage exceeds the setpoint, the time delay is started. When the time has elapsed, the relay will energise and the red LED will illuminate to indicate the trip condition. The relay will automatically reset once the  monitored voltage falls below the setpoint minus the differential. When reset, the LED will extinguish and the relay de-energies. The time delay is not active when resetting.
 
Under Voltage models :When the monitored voltage falls below the setpoint, the time delay is started. When the time has elapsed, the relay will de - energies and the red LED will extinguish to indicate the trip condition. The relay will automatically reset once the monitored voltage rises above the setpoint plus the differential. When reset, the LED will illuminate and the relay energizes. The time delay is not active when resetting. On request, any product can be manufactured with the  energize / de - energize function swapped.