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  • Improve security of sensitive, high speed digital status inputs
  • Provides capacitor discharge protection for solid state status inputs to ENA TS 48-4
  • Transient noise withstand to IEC60255 standards
  • Compact and easy to fit and retrofit
  • Instantaneous burden turn-on with ~50ms fixed dwell time
  • Wide voltage operating range
  • Thermal cut out protection
  • Operation check LED
  • Status input pick-up LED
  • M4 screw terminals or optional flying leads
  • ABMZ version with minimum voltage pick-up threshold
  • Made in Australia

The ABM Active Burden Module is designed for application with solid state status inputs wherever high security signaling is required.

The ABM is intended to be used with digital relays and related products such as RTU’s as an aid to improve electrical transient and noise immunity.  In particular, for added immunity against infrequent and irregular transientssuch as represented by the capacitor discharge test as defined in standardENA TS 48-4.

In normal operation, the ABM imposes a short term increased burden to the operate signal which is then removed after approximately 50 ms.

The ABMZ version is a special version that provides a minimum voltage pick-up threshold.

Use the ABM Demonstrator to check status input susceptibility and compare improvements using an ABM or a shunt resistor.

‘Screw terminal’ and ‘Flying lead’ versions are available as depicted.