Motor Protection

GE's advanced motor thermal model provides optimized protection to ensure maximum process uptime

Typical applications

Select a typical application to view the associated one line diagram, functions, and product order codes.

Typical diagram
Large Motor

Two sets of CT's for differential protection

Typical Functions

87S 
49
49RTD 
49S 
38 
51R 
50P/G 
51P/G 
50BF
66 
46 
47 
27P 
59P/N 
67P/N 
32 
81U 
81O
Stator Differential 
Thermal Overload 
RTD Biased Thermal Overload 
Stator RTD 
Bearing RTD 
Mechanical Jam 
Instantaneous Overcurrent 
Time Overcurrent 
Breaker Failure
Starts per hour 
Current Unbalance 
Phase Reversal 
Undervoltage 
Overvoltage 
Directional Overcurrent 
Directional Power 
Underfrequency 
Overfrequency
FunctionsTypical Product Order Code
Typical FunctionsM60-E00-HCH-F8L-H6P-M8N-P5C-UXX-WXX
Ethernet  CommunicationsCopperM60-N00-HCH-F8L-H6P-M8N-P5C-UXX-WXX
FiberM60-G00-HCH-F8L-H6P-M8N-P5C-UXX-WXX
LockoutStandaloneHEA61-A-RU-220-X2
IntegratedM60-E00-HPH-F8L-H6P-M8N-P5C-U4L-WXX

Typical diagram
Large Motor

Two sets of CT's for differential protection

Typical Functions

87S 
49
49RTD 
49S 
38 
51R 
50P/G 
51P/G 
50BF
66 
46 
47 
27P 
59P/N 
14
55
Stator Differential 
Thermal Overload 
RTD Biased Thermal Overload 
Stator RTD 
Bearing RTD 
Mechanical Jam 
Instantaneous Overcurrent 
Time Overcurrent 
Breaker Failure
Starts per hour 
Current Unbalance 
Phase Reversal 
Undervoltage 
Overvoltage 
Speed Switch 
Power Factor
Functions Typical Product Order Code
Typical Functions469-P5-HI-A20-E
CommunicationsCopper469-P5-HI-A20-T
DeviceNet469-P5-HI-A20-D
LockoutStandaloneHEA61-A-RU-220-X2
IntegratedM60-E00-HPH-F8L-H6P-M8N-P5C-U4L-WXX

Typical diagram
Large or medium motor

Typical Functions

49
49RTD 
49S 
38 
51R 
50P/G 
51G 
66 
46 
47 
27P 
59P/N 
37
Thermal Overload 
RTD Biased Thermal Overload 
Stator RTD 
Bearing RTD 
Mechanical Jam 
Instantaneous Overcurrent 
Time Overcurrent 
Starts per hour 
Current Unbalance 
Phase Reversal 
Undervoltage 
Overvoltage 
Undercurrent

Typical diagram
Medium Motor

Typical Functions

49Thermal Overload 
49RTD RTD Biased Thermal Overload 
49S Stator RTD 
38Bearing RTD
51RMechanical Jam
50P/G Instantaneous Overcurrent 
51G Time Overcurrent 
66 Starts per hour
46Current Unbalance
37Undercurrent
Functions Typical Product Order Code
Typical Functions369-HI-R-M-0-0-0 
269Plus-SV-1-1-100P-HI 
239-RTD-AN
Ethernet
Communications
Ethernet369-HI-R-M-0-E-0
DeviceNet369-HI-R-M-0-D-0
Profibus369-HI-R-M-0-P-0
LockoutStandaloneHEA61-A-RU-220-X2
Harsh environment369-HI-R-M-0-0-H   
239-RTD-AN-H

Small Motor

Typical Functions

49
49RTD
49S
38
51R
50P/G
46
27P
37
Thermal Overload
RTD Biased Thermal Overload
Stator RTD
Bearing RTD
Mechanical Jam
Instantaneous Overcurrent
Current Unbalance
Phase Undervoltage
Undercurrent
FunctionsTypical Product Order Code
Typical FunctionsMM300-B-E-H-S-S-C-A-G
239-RTD-AN
MM2-PD-2-120
LockoutStandaloneHEA61-A-RU-220-X2
Harsh environment369-HI-R-M-0-0-H
239-RTD-AN-H