Differential relay

urn:mrn:iala:dic:5-4-0190

A relay having two windings so connected that when these windings are energized simultaneously their magnetic effects neutralize each other.

Reference: I.E.C.

Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)

English

ampere

charge current

Intensity

Illuminance

Energy

Contrast

Celsius (previously Centigrade)

Capacitance

International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM