Delta MM300 Instruction Manual Page 35

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2–16 MM300 MOTOR MANAGEMENT SYSTEM – INSTRUCTION MANUAL
ELECTRICAL INSTALLATION CHAPTER 2: INSTALLATION
2.2.3.3 Phase voltage inputs (IO_B module)
The MM300 has three channels for AC voltage inputs. There are no internal fuses or ground
connections on the voltage inputs. Polarity is critical for correct power measurement and
voltage phase reversal operation.
Figure 19: Wye voltage connection
Figure 20: Delta voltage connection
A
C
B
Contactor
+
FUSES - 100 ma typical
E1
E2 E4E3
Phase voltage inputs
MM300
Motor Management System
To switchgear
ground bus
853735A2.CDR
E5
E6 E7
VT1 VT2 VT3
Control power
LN
E8
N/C
A
C
B
Contactor
+
FUSES
E1
E2 E4E3
Phase voltage inputs
MM300
Motor Management System
To switchgear
ground bus
853736A2.CDR
E5
E6
VT1 VT2 VT3
Control power
LN
E7 E8
N/C
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