Installation manual

28 Magnitude™ Frictionless Centrifugal Chillers – Model WMC IM 1029-2
Case 6, WMC 145D – 150D Field Power Wiring
Refer to Case 5. Case 6 merely adds factory-mounted EMIs to the load side of the circuit breaker. The EMI
load side is wired out to the harmonic filter. In other words, the EMI is interposed between the breaker and the
filter
Figure 23, WMC 145D, 150D Case 6 Field Power Wiring
NOTES:
1. Optional EMI Filter
2. Remove standard line reactor when optional combination line reactor/harmonic filter assembly is used.
3. Circuit breakers shown in the diagram function exclusively as disconnect switches.
Case 7, WMC 145S Field Power Wiring
Case 7 adds an optional factory-mounted and wired EMI filter. The actual field wiring is to the disconnect
switch as in Case 1, Single-Point.
Case 8, WMC 145S Field Power Wiring
Case 8 adds a remote-mounted combo harmonic filter. Field wiring runs from the load side of the disconnect
switch to the power block in the remote harmonic filter.
The standard line reactors are shipped in the unit and are removed and discarded in the field. A shipped loose
power block is field mounted in their former location and one side is wired to the remote filter. The wires that
originally ran from the line reactor up to the compressor are now connected to the other side of the field
supplied power block.