Eaton Power Xpert C445 - Figure 40. Motor Connections for Standard Overload Control Using Potential Transformers with C445 BA

Chapter 3—Installation and Wiring
Power Xpert C445 Global Motor Management Relay MN042003EN—January 2019 www.eaton.com 33
Motor Connections with Potential Transformer(s)
Figure 40. Motor Connections for Standard Overload Control Using Potential Transformers with C445BA…
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... C445BA...
CH1
CH2
CH1
C445U...
C D0 D1
CH2
1 2 3 4 5 6 7 8
PTC
MOTOR
3~
L2
L3
PE
L1
Optional Modbus
Q11
Q1
POTENTIAL
TRANSFORMER
I1 I2 I3 I4 IC IC IC Q1 Q1 Q2 Q2 Q3 C Q3 PE N L
(+) Us
(-) Us
120-240 VAC
L1