The 169PLUS-120N-125VDC is a highly configurable motor protection system manufactured by General Electric Multilin.

The relay comes with basic setpoints programmed for large motor systems, which can be further adjusted by the user upon receipt of the relay or as they become more familiar with the data generated by the relay.

While users can manage their motor systems with fairly minimal connection to GE Multilin’s 169PLUS-120N-125VDC.

However, the unit does offer a wide range of ports to diversify and customize the function of the relays.

Some of these connections include:

. Auxiliary Relay Contacts: these two contacts provide an additional NO/NC connection and operate independently of the other contacts.

The relays can be configured as non-fail-safe or fail-safe, and latching or non-latching.

They can be used for active alarm or trip functions and can trigger devices that are not just motors.

RTD Sensor Connections: The user can connect up to 6 resistance temperature detectors.

This is used to monitor values such as stator motor temperature, historical hottest temperature and ambient air temperature.

The relay then uses the data obtained from these connections to schedule the optimal cooling process.

. Analog output terminals: These two terminals can be configured using the relay’s setpoint system.

It can be connected to chart recorders, remote meters, programmable recorders and/or computer loads.

. Emergency Restart Terminal: This connection type overrides trips within the system and forces a restart of the motor.

These connections add to the overall versatility of the system and can further protect motor components from damage during operation.