NEN EN 116000-2 : 1997

Gives additional test and measurement procedures which, together with those in Part I may be used by specification writers, in conjunction with relevant sectional and blank detail specifications to prepare detail specifications for time delay relays of assessed quality. Part II also provides relevant terminology. The time delay relays (TDRs) covered can have either electromechanical or solid state outputs, and their time characteristics may be achieved by electronic (solid state), thermal or mechanical means, or may be inherent in relay construction. Relays having following types of time characteristics are covered: delay on operate, delay on release, interval and repeat cycle.