Test & Measurement
Carlo Gavazzi releases DEA71 and DEB71 earth leakage monitoring relays
November 27, 2018 by Manufacturing AUTOMATION
November 27, 2018 – Carlo Gavazzi recently launched two earth leakage monitoring relays, the DEA71 and DEB71.
When used in conjunction with a CTG Series core balance current transformer and appropriate circuit breaker, the relays provide machine protection against fault currents, and help to reduce fire hazards. These earth leakage relays react to small changes in current, which can occur due to insulation or grounding failures.
Two models, each offering choices of threshold ranges, allow users to find the right solution for their requirements. DEA71 features fixed trip levels with a reliable tripping level and safety against tampering. DEB71 provides the ability to adjust trip levels and includes an adjustable time delay. A lockable front cover provides further tamper protection.
Both DEA71 and DEB71 avoid nuisance tripping in the circuit, in accordance with the EN 60947-2 Annex M norm. Two separate alarm outputs allow for a warning signal to be generated before a shutdown is necessary. Their compact (35mm wide) housing preserves valuable panel space.
The DEA71 and DEB71 from Carlo Gavazzi perform crucial monitoring of earth leakage, prolonging machine life by limiting damage from ground faults as well as reducing fire risk. They conform to global standards such as UL 508, CSA C22.2 and EN 60947-2 Annex M.