Delta MM300 Instruction Manual Page 30

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CHAPTER 2: INSTALLATION ELECTRICAL INSTALLATION
MM300 MOTOR MANAGEMENT SYSTEM – INSTRUCTION MANUAL 2–11
Figure 12: Core balance ground CT installation, shielded cable
Figure 13: Core balance ground CT installation, unshielded cable
POWER CABLE
TO MOTOR
TO STARTER
GROUND BUS
CABLE LUGS
TO SOURCE
TERMINATION
(TWISTED PAIR)
SPLIT-BOLT CONNECTOR
853712A1.CDR
CORE BALANCE CT
SECONDARY CONNECTION
TO MM300 IED
IMPORTANT: FOR SHIELDED
CABLE, THE GROUND WIRE
MUST PASS THROUGH THE
CT WINDOW.
50:0.025 CORE BALANCE CT
FOR GROUND SENSING
STRESS CONE
SHIELD GROUND
CONNECTION
BOTTOM OF
MOTOR STARTER
COMPARTMENT
POWER CABLE
TO MOTOR
50:0.025 CORE BALANCE CT
FOR GROUND CT SENSING
TO STARTER
GROUND BUS
(TWISTED-PAIR)
853713A1.CDR
GROUND CONDUCTOR DOES
NOT PASS THROUGH CT, AS THE
CT IS NOT MOUNTED OVER
GROUND WITHIN THE CABLE
JACKET.
BOTTOM OF
MOTOR STARTER
COMPARTMENT
CORE BALANCE CT
SECONDARY CONNECTION
TO MM300 IED
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