Description

Application Scenarios

A mid-sized wastewater treatment plant faced recurring motor failures in its aeration blower system,caused by undetected overloads from clogged air filters.These failures led to 8-10 hours of unplanned downtime per month,costing the plant over$30,000 in repair and production losses.After installing the 369-LO-0-M-F-E-0-0 relays on each blower motor,the plant saw a dramatic shift.The 369-LO-0-M-F-E-0-0 continuously tracked motor current,alerting operators to rising loads 15-20 minutes before overload conditions.This early warning allowed filter cleaning before trips occurred,reducing motor failures by 90%and eliminating unplanned downtime.The relay directly solved the plant’s core pain point of reactive motor maintenance,shifting to a proactive safety model.

Parameter

Main Parameters

Value/Description

Product Model

369-LO-0-M-F-E-0-0

Manufacturer

GE Multilin(GE Industrial Solutions)

Product Category

Industrial Motor Overload Protection Relay

Rated Current Range

0.1A-50A(Adjustable via CT input,compatible with 5A/1A CTs)

Protection Functions

Overload protection(class 5-30 trip curve),phase loss/imbalance protection,undercurrent protection

Trip Configuration

Flexible trip settings(adjustable pickup current,time delay)via front-panel DIP switches

Control Output

1 normally open(NO)/1 normally closed(NC)relay output(AC250V/5A,DC30V/5A)

Communication Interface

RS-485(Modbus RTU protocol,9600-115200 bps baud rate)

Operating Voltage

120V AC/240V AC±10%(Dual voltage input for global industrial use)

Operating Temperature Range

-30°C to 70°C(Withstands extreme cold in outdoor cabinets and heat in industrial workshops)

Protection Rating

IP30(Enclosure-mounted design,dust and splash protection)

Installation Method

Panel-mounted(DIN rail adapter optional for 35mm rails)

Response Time

≤100ms(Fast fault detection for critical motor protection)

Display&Alarms

LED status indicators(power,trip,alarm)+local audible alarm(optional)

Physical Dimensions

96mm×96mm×120mm(Square panel design,fits standard control cabinet cutouts)

Certification

UL 508,CSA C22.2 No.14,IEC 60947-4-1(Complies with global industrial safety standards)

CT Compatibility

5A secondary CTs(standard),1A CTs(via software configuration)

Technical Principles and Innovative Values

Innovation Point 1:The 369-LO-0-M-F-E-0-0 features adaptive trip curve technology.Unlike traditional relays with fixed trip curves(which often cause false trips or delayed protection),this relay allows users to select 5-30 class trip curves to match specific motor types(e.g.,class 10 for centrifugal pumps,class 20 for compressors).In a chemical plant’s pump system,this flexibility reduced false trips by 85%compared to the previous fixed-curve relays,eliminating unnecessary production interruptions.

Innovation Point 2:It integrates predictive overload预警(POA)logic.By analyzing current trends over time,the 369-LO-0-M-F-E-0-0 can predict an impending overload 10-30 seconds in advance and send a pre-alarm to the control system—unlike conventional relays that only trip after overload occurs.A steel mill using this feature prevented a$50,000 motor burnout when the relay warned of a bearing failure-induced current rise,allowing maintenance before the motor reached critical temperature.

Application Cases and Industry Value

In a large automotive assembly plant,the GE 369-LO-0-M-F-E-0-0 was deployed to protect 24 conveyor motor systems across the paint shop.The paint shop’s motors operate in high-temperature(up to 65°C)and dusty conditions,making them prone to overheating and overloads.Before installing the 369-LO-0-M-F-E-0-0,the plant averaged 3 motor replacements per month,each costing

12,000inpartsandlabor.Afterintegration,therelays’phaseimbalanceprotectiondetectedafaultymotorstarterwithin2minutesofoperation,preventingacompletemotorfailure.Over12months,theplantreducedmotorreplacementstojust1,saving

372,000.Additionally,the relays’Modbus communication allowed remote monitoring via the plant’s SCADA system,cutting on-site inspection time by 60%.

Installation,Maintenance,and Full-Cycle Support

Installation of the GE 369-LO-0-M-F-E-0-0 is intuitive and requires minimal electrical expertise.Before installation,verify the motor’s rated current and CT ratio to set the relay’s pickup current correctly—this ensures accurate protection without false trips.Mount the relay in a panel cutout(96mm×96mm)or use the optional DIN rail adapter,ensuring it’s away from high-voltage components(e.g.,motor starters)to reduce electromagnetic interference.Connect the CT inputs,power supply,and control outputs per the wiring diagram,and test trip functions with a current injector to confirm operation.

For routine maintenance,inspect wiring connections quarterly to prevent loose contacts(a common cause of false alarms)and clean the relay’s front panel with a dry cloth to maintain LED visibility.The 369-LO-0-M-F-E-0-0’s self-diagnostic feature alerts users to internal faults(e.g.,power supply issues),simplifying troubleshooting.GE Multilin provides comprehensive support,including free online installation manuals,24/7 technical support,and on-site training for large deployments.Spare parts are stocked globally,ensuring delivery within 48 hours for urgent replacements.Whether you’re protecting small pumps or large industrial motors,our team can customize a protection solution tailored to your needs.Contact us today to enhance your motor safety and reduce operational risks with the 369-LO-0-M-F-E-0-0.

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