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GE Power Management
369 Motor Management Relay
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GE Power Management
369 Motor Management Relay
Offering optimum motor protection in situations
where other relays cannot, the 369 Motor
Management Relay possess the unique feature of
its ability to learn individual motor
parameters, giving it the flexibility to adapt to
each application by learning values of motor
inrush current, negative sequence current K
factor, cool down rates, start thermal capacity
and acceleration time.
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GE Power Management
369 Motor Management Relay
Presentation Overview

• Applications

• User Interface

• Metering and
• Monitoring

• Inputs and
• Outputs

• Protection and
• Control

• Typical Wiring

• Ordering

• Communications

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GE Power Management
369 Motor Management Relay
Applications
MAIN
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GE Power Management
369 Motor Management Relay
369 FUNCTIONAL BLOCK DIAGRAM
MAIN
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GE Power Management
369 Motor Management Relay
DEVICE
PROTECTION
Induction Synchronous Motors

• Large Induction Motors
• Synchronous Motors

MAIN
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GE Power Management
369 Motor Management Relay
Protection

• Stator winding
• overtemperature
• (R option)
• Bearing over-temperature
• (R option)
• Multiple starts
• Overloads
• 15 standard overload
• curves

• Phase reversal
• (M option)

• User defined overload
• FlexCurveTM

• Ground fault

• Locked rotor

• Undercurrent

• Rapid trip/mechanical jam

• Unbalance/single phasing

• Variable lock out time

• Learns individual
• motor parameters

• Short circuit

• Backspin Detection
• (B option)

MAIN
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GE Power Management
369 Motor Management Relay
Motor Protection

• Thermal modeling of stator and rotor
• RTD (resistance temperature unit) and negative
  sequence feedback (R option)
• Overload protection (15 standard curves plus
  custom FlexCurve)

• Adapts for hot or cold starts
• Power factor with time delays (M option)
• Backspin detection for protection of downhole
  pumps

MAIN
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GE Power Management
369 Motor Management Relay
Start and Running

• Motor is protected under both Acceleration and
  Running
• conditions

The 369 can trigger an alarm or trip the motor
based on

• normal acceleration time
• number of starts per hour
• multiple starts
• time between starts
• motor overload conditions

MAIN
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GE Power Management
369 Motor Management Relay
Overload

• One of 15 standard overload curves may be
  programmed based on
• motor manufacturers locked rotor time
  capability.
• Alternately the user may program in a custom
  curve using the built-in
• FlexCurve function.

View 15 Standard Overload Curves
MAIN
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GE Power Management
369 Motor Management Relay
15 Standard Overload Curves

• The motors service factor value is
• entered as the overload pickup level

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GE Power Management
369 Motor Management Relay
FlexCurve
When a FlexCurve is programmed, the 369 develops
a smooth custom overload curve within a selected
range.
FlexCurve can be used to protect motors which
have different rotor and stator damage, allowing
total motor design capacity with complete
protection.
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GE Power Management
369 Motor Management Relay
Thermal Modeling
The Thermal Model within the 369 has the ability
to compute the motor I2t value based on actual
motor load current.

• thermal model calculates value in terms of
  thermal capacity used
• RTDs (resistance temperature units) measuring
  stator temperature
• act as a thermal capacity check to confirm
  value calculated by
• thermal model. RTDs may be used for monitoring
  stator, bearing,
• ambient, or other temperature monitoring.
• thermal capacity used is then updated to reflect
  the higher of the
• two values

MAIN
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GE Power Management
369 Motor Management Relay
Motor Match
MotorMatch modifies the initially entered relay
parameters to match actual measured motor
characteristics. The key elements include

• accumulated I2t in the memory
• RTD input to the memory
• learned cooldown time from run to stop
• learned cooldown time from run-
• overload to run-normal
• learned acceleration time
• learned negative sequence contribution (K-factor)

MAIN
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GE Power Management
369 Motor Management Relay
RTD Hot Motor Compensation
When hot motor compensation is enabled (R option)

• RTD feedback from actual stator temperature
• checks the thermal capacity model
• User has the capability to match the motor
• thermal characteristics with a dual slope RTD
• bias curve
• The two part curve allows for easy fitting of
  hot
• and cold motor damage curves to the RTD
• bias feature

MAIN
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GE Power Management
369 Motor Management Relay
User Interfaces

• PC Software for setting, monitoring
• Flash Memory for Future Upgrades or
• industry modifications
• 40 character alpha-numeric backlit LCD display
• Five Target LED indicators
• 3 RS485 com port (ModBus RTU)
• Front Panel RS232 port
• Optional Fiber Optic Port
• Optional Profibus Port

MAIN
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GE Power Management
369 Motor Management Relay
Control

• Full remote local control
• Power factor control
• Current and Voltage Sensing
• Two speed motor
• Testing Switch
• Emergency Restart

MAIN
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GE Power Management
369 Motor Management Relay
Monitoring

• Event Recorder (Last 40 Events)
• Trace Memory (16 Cycle Waveform Capture)
• Complete Self Checking

MAIN
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GE Power Management
369 Motor Management Relay
Metering

• Individual Voltages Currents
• Real, Reactive Apparent Power Demand
• Real Reactive Power Costs Usage
• Running Maximum Demand Levels
• Power Factor
• Temperatures
• Backspin Frequency and Predication Time

MAIN
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GE Power Management
369 Motor Management Relay
MAIN
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GE Power Management
369 Motor Management Relay
MAIN
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GE Power Management
369 Motor Management Relay
Communications

• Modbus protocol (Modicon, Bailey, Siemens,
  Allen Bradley, GE Fanuc, Square D, Honeywell,
  Foxboro, Intellution FIX/DMACS, Wonderware In
  Touch, etc. )

• Windows based
• Access all
• Actual Values
• Setpoints
• Status
• Event records

• Graphical trending
• Setpoint programming
• Setpoint files
• Download update
• firmware to Flash
• memory

• Oscillography

MAIN
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GE Power Management
369 Motor Management Relay
Metering
Actual Values

• average and individual phase currents
• RTD temperatures (hottest, individual, maximum)
  (R option)
• unbalance ratio
• ground leakage current
• thermal capacity remaining / estimated time to
  trip
• at present overload level
• motor load as a percent of full load
• phase to phase or phase to neutral voltage
  voltage
• (meter option)
• W, var, Mwhr, PF, Hz (M option)

MAIN
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GE Power Management
369 Motor Management Relay
Monitoring
Prior Alarms

• immediate overload/stall warning
• ground fault
• mechanical jam
• unbalance
• undercurrent
• RTD overtemperature, broken RTD sensor,
• low temperature RTD (R option)
• self-test-service
• under/overvoltage (M option)
• low power factor (M option)

MAIN
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GE Power Management
369 Motor Management Relay
Monitoring
Fault Diagnosis

• 369 displays the cause of the trip and
• will show the remaining lock-out time if
  applicable
• cause of the last trip and pre-trip values can
  be
• recalled for rapid fault diagnosis.

MAIN
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GE Power Management
369 Motor Management Relay
Monitoring
Statistical Data (StatTracTM)

• StatTracTM provides statistical data of motor
  use for
• operations monitoring, maintenance, and fault
  diagnosis.
• Using the Keypad, the user can display

• running hours and number of starts since last
  commissioning
• number of all trips
• number of specific types of trips
• total Watt-hours (M option)

MAIN
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GE Power Management
369 Motor Management Relay
Inputs

• General Switch and Digital Counters

• Any of the Switch inputs can be configured as a
  General or Digital Counter

• Speed Switch Input

• enables the user to use an external speed device

• Differential Relay Input

• provided terminals to accept contact closure
  from an external
• differential relay
• all protective functions grouped through one
  main relay

• Spare Input

• spare input terminals configurable to represent
  either a standard contact input
• (ie-pressure switch), or a specific contact
  input (circuit breaker/contactor status)
• 52a or 52b contact from a circuit breaker
  positive identification of the position of
• the breaker(open or closed)

MAIN
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GE Power Management
369 Motor Management Relay
Outputs

• 4 Output Relay Contacts

• Trip Relay as main latched output relay
• Alarm output relay (latched or unlatched)
• Auxiliary 1 output relay (latched or unlatched)
• Auxiliary 2 output relay

• 4 Fully Programmable Analog Outputs (M option)

• Used to indicate one of motor thermal capacity
  used,
• motor current, hottest stator RTD, bearing RTD,
  CT
• secondary current, or other various parameters

MAIN
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369 TYPICAL WIRING
MAIN
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GE Power Management
369 Motor Management Relay
Ordering
369





369 Basic Unit HI
50-300 VDC / 40-265 VAC control
power LO 20-60 VDC
/ 20-48 VAC control power R
Optional 12 RTD inputs
(built-in) 0 No optional
RTD inputs M
Optional metering package B
Optional backspin detection (incl. metering
0 No optional metering or
backspin detection F Optional Fiber
Optic Port 0 No Optional Fiber Optic
Port P Optional Profibus
protocol interface 0 No
optional Profibus protocol interface
MAIN
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GE Power Management
Contact Information
369 Motor Management Relay