Electronic Motor Protection Relay 100M Series

The 100M Series electronic motor protection relay is a compact relay ideally suited for fitting into gate-end boxes for protecting underground coal cutting machinery and transformers.

Warning LEDs indicate when the respective threshold settings are exceeded. In the event of a trip, the respective LED and the main trip LED are latched in order to assist maintenance personnel in identifying the cause for the trip.

Available in ampere calibration from 5 to 360A, split over three ampere ranges, or in percentage calibration. Selectable motor starting curves from 2 to 10s as well as a thermal envelope that exactly accommodates the duty design parameters of the motor are available. This is achieved by selecting thermal lock-out periods ranging from 30s (120 stop - starts per hour) to 10 minutes (6 stop - starts per hour)

The main trip relay comprises 1 n/o and 1 n/c contact. The short circuit protection trip contact is a dedicated n/o designed to operate a shunt trip on a back-up circuit breaker.