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Chapter 6—Motor Protection
116
Power Xpert C445 Global Motor Management Relay
MN042003EN—January 2019
www.eaton.com
Application Configuration
Basic Parameters
Application dependent parameters need to be configured so
that the monitoring and protection functions can be
implemented.
The C445UM Monitoring User Interface and Power Xpert
in
Control software tool both walk users through an easy
Setup Wizard for these parameters.
Table 24. Basic Parameters
Notes
1
These values may change depending on MM selection.
2
These values may change depending on MM use.
Advanced Parameters
Application dependent parameters are required for some
advanced applications. Users must set PT or CT Ratios if
external CTs or PTs are used. Additionally, users who want
to utilize motor torque and efficiency monitoring should set
Motor Rated Speed and Motor Rated Stator Resistance for
higher accuracy.
Table 25. Advanced Parameters
Parameter
Units
Increment
Minimum
Maximum
Default
Notes
FLA Motor1
amps
1
1
1
65535
1
101
1
ModBus Register = 900
FLA Motor2
amps
1
1
2
65535
2
101
2
ModBus Register = 901
Trip Class
1
5
40
5
ModBus Register = 1004
Rated Voltage
volts
1
100
5000
480
ModBus Register = 903
HP Motor1
hp
1
1
500000
2000
ModBus Register = 909
HP Motor2
hp
1
1
500000
2000
ModBus Register = 911
Rated Frequency
Hz
1
50
60
60
ModBus Register = 904
Phase Order
ABC
ACB
ABC
Watts Motor1
watts
Watts Motor2
watts
Parameter
Units
Increment
Minimum
Maximum
Default
Notes
CT Ratio – Primary
amps
1
1
1
Modbus Register = 918
CT Ratio – Secondary
amps
1
1
1
Modbus Register = 919
PT Ratio Primary
V
1
1
1
Modbus Register = 920
PT Ratio Secondary
V
1
1
1
Modbus Register = 921
Motor Rated Speed Motor1
RPM
1
300
3600
1750
Modbus Register = 914
Motor Rated Speed Motor2
RPM
1
300
3600
1750
Modbus Register = 915
Motor Rated Stator Resistance
ohms
1
1
0
280
Modbus Register = 917