Time Over- / Undervoltage Relay

The training panel equipped with digital, over- and undervoltage relay (industrial model) is used to monitor single and three-phase power systems (ANSI 27 und 59). The pick-up values and release times for initiating the over- and undervoltage trip, are individually adjustable.

• Nominal voltage: 100V/110V/230V/400V
• Nominal frequency: 45-66Hz
• Power consumption: 3.5VA
• Thermal stability: 1.3x V_N (constant)
• Reset ratio: Adjustable, via the hysteresis
• Release time: 300ms
• Response time: 300ms, minimum
• Output relay:
  Switch-on current: 20A
  Nominal current: 5A
  Max. contact rating:
  1250 VA/DC; 120W/DC, ohmic
  500VA/AC; 75W/DC, inductive
• LED indicators:
  "V<" = Ready
  "V<" = Starting (flashing)
  "V<" = Release (off)
  "V>" = Release (permanently on)
• Potentiometer controls:
  for V</V_N 75%...100%
  for V>/V_N 95%...120%
  for t 0s...10s
  for differential 2%...10%
• Inputs/outputs: 4-mm safety sockets
• The integrated RS 485 interface is suitable for setting the relay parameters. It is also possible to store and transmit measured relay values to and from the PC. Optical signal transmission guarantees galvanic isolation.
• Indicators of the interface:
  1. LED, green = operation indicator
  2. LEDs, green = data transfer
• Dimensions: 297 x 114 x 125mm (HxWxD)
• Weight: 1.0 kg