GE 269Plus Motor Management Relay

GE 269Plus Motor Management Relay

DESCRIPTION

The GE Multilin model 269 Plus Motor Management Relay® is a modern microcomputer-based product designed to provide complete, accurate protection for industrial motors and their associated mechanical systems. The 269 Plus offers a wide range of protection, monitoring, and diagnostic features in a single, integrated package. All of the relay setpoints may be programmed in the field using a simple 12-position keypad and 48- character alphanumeric display. A built-in “HELP” function can instruct the user on the proper function of each of the programming keys and on the meaning of each displayed message.

PROTECTION FEATURES

• Overloads 

• Stator Winding Overtemperature (Alarm, High Alarm and Trip) 

• Multiple Starts 

• Short Circuit 

• Locked Rotor 

• Rapid Trip/Mechanical Jam 

• Unbalance/Single Phasing 

• Ground Fault (Alarm and Trip) 

• Bearing Overtemperature (Alarm and Trip) 

• Undercurrent (Alarm and Trip) 

• Variable Lock-Out Time 

• Phase Reversal (Meter Option)

OPERATIONAL FEATURES

• Microcomputer controlled 

• Keypad programmable 

• 48 character alphanumeric display 

• Built-in "HELP" function 

• Eight selectable standard overload curves  

• User-defined custom overload curve capability, FlexCurve™ 

• Continual relay circuitry self-check

MONITORING AND DISPLAY FEATURES

• Negative sequence phase current unbalance measurement 

• Ground fault (earth leakage) current measurement 

• Up to six stator RTD inputs 

• Four additional RTD inputs 

• Monitoring of motor ambient air temperature 

• Display of all SETPOINTS or ACTUAL VALUES upon request 

• Display of relay TRIP/ALARM and HELP messages

COMMUNICATIONS AND CONTROL FEATURES

• One latched, main trip relay 

• One alarm relay 

• Two auxiliary relays  

• Emergency restart capability 

• Pre-trip alarm warnings 

• 4-20mA output of motor current as a percentage of full load, motor thermal capacity, hottest stator RTD temperature, percentage of phase CT secondary current, or bearing RTD 

• Optional single-shot restart on running overload trip 

• Speed switch, differential relay, and spare input 

• RS485 port for connection to programmable controllers and computers.