The ITD 7100 series of relay are protection devices consisting of an overcurrent relay, an angle phase relay and a time-relay unit grouped in the same case. The angle relay allows the timer to be started by the time-delay unit (or, conversely, prevents this).

ITD series includes:

• ITD7111: definite time directional phase overcurrent relay
• ITD7112: definite time directional earth overcurrent relay
• ITD7211: inverse time directional phase overcurrent relay
• ITD7202: inverse time directional earth overcurrent relay

All models are supplied in type R2 plug-in modular cases which may be mounted either as separate relay, flush or projection mounting, or as an element in a standard 19" rack cradle.

PROTECTION   FUNCTIONS

• Directional phase overcurrent relay [67]
• Directional earth overcurrent relay [67N]