Voltage and fast impulse overvoltage relay

The ALP series detects fast impulse overvoltages harmful to switching or transformation equipment insulation. These phenomena are invisible to conventional relays because digital filtering slows down their detection.

  • Detects fast impulse overvoltages of as little as 130us of duration.
  • DNP3 and IEC61850 GOOSE communication
  • Cybersecure to help meet NERC CIP requirements

Hardware configurations

  • ALP-2000 : Combination of twelve (12) current and voltage inputs, six (6) digital inputs, four (4) relay outputs, two (2) high-speed power outputs, up to four (4) fiber Ethernet ports

 

  • ALP-4000: Combination of twenty-four (24) current and voltage inputs in a single device, sixteen (16) digital inputs, sixteen (16) relay outputs, eight (8) high-speed power outputs, up to four (4) fiber Ethernet ports

Main characteristics and advantages:

  • Fast impulse overvoltage detection
  • Includes ANSI functions 27, 50, 50N, 51, 51N, 59, 67, 81, 81R and LOV
  • Programmable logic
  • DNP3 and IEC61850 GOOSE communication
  • Cybersecure to help meet NERC CIP requirements
  • Secured WEB server for easy and safe access to the relay settings, real-time measurements and oscillography recordings.