Eaton Power Xpert C445 - Power Xpert inControl Commissioning Software Tool

Chapter 3—Installation and Wiring
32 Power Xpert C445 Global Motor Management Relay MN042003EN—January 2019 www.eaton.com
Figure 39. Motor Connections for Standard Overload Control Using Potential Transformers with C445BD…
Legend
Q1 = Cable and motor protection.
Q11 = Run contactor.
External CT = External Current Transformer, connect in
accordance with manufacturer’s instructions.
PTC = Positive Temperature Coefficient (PTC) sensor.
CH1
T1 T2
V1 V2 V3
C445M...
I1 I2
C445BD...
CH1
CH2
CH1
C445U...
I3 I4 C 0V 24V Q1 Q1 Q2 Q2 Q3 C Q3 24V 0V PE
C D0 D1
CH2
1 2 3 4 5 6 7 8
PTC
MOTOR
3~
L2
L3
PE
L1
(+) Us
(-) Us
24 VDC
Optional Modbus
Q11
Q1
POTENTIAL
TRANSFORMER