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16
through control panels. Conduits are also factory provided to encase the power wiring as it is routed
between one chiller module and the next.
A = Single Point Power (5 kA Rating) + Phase and Voltage Monitor - This option includes the
single-point power distribution panel. A factory-installed phase/power monitor designed to protect
the chiller from premature failure and damage due to common voltage faults such as voltage
unbalance, over/under voltage, phase loss, reversal, incorrect sequencing and rapid short cycling is
included.
B = Single Point Power (100 kA Rating) - Short-circuit current ratings provide the level of fault
current that a component or piece of equipment can safely withstand (based on a fire and shock
hazard external to the enclosure). A 100kA SCCR can have significant impact in meeting safety and
insurance requirements.
C = Single Point Power (100 kA Rating) + Phase and Voltage Monitor - This option includes
the single-point power distribution panel and each unit is rate for 100ka SCCR. A factory-installed
phase/power monitor designed to protect the chiller from premature failure and damage due to
common voltage faults such as voltage unbalance, over/under voltage, phase loss, reversal, incorrect
sequencing and rapid short cycling is included.
D = Power Feed to Each Unit (5 kA Rating) – Power is field provided to each chiller module in
the array. This is beneficial in applications where redundancy or dual point power is desirable or to
allow for smaller electrical feeds instead of a large single electrical feed.
E = Power Feed to Each Unit (5 kA Rating) + Phase and Voltage Monitor - This option
includes field provided power and an additional factory-installed phase/power monitor designed to
protect the chiller from premature failure and damage due to common voltage faults such as voltage
unbalance, over/under voltage, phase loss, reversal, incorrect sequencing and rapid short cycling.
F = Power Feed to Each Unit (100 kA Rating) - Short-circuit current ratings provide the level of
fault current that a component or piece of equipment can safely withstand (based on a fire and shock
hazard external to the enclosure). A 100kA SCCR can have significant impact in meeting safety and
insurance requirements.
G = Power Feed to Each Unit (100 kA Rating) + Phase and Voltage Monitor - This option
includes field provided power and an additional factory-installed phase/power monitor designed to
protect the chiller from premature failure and damage due to common voltage faults such as voltage
unbalance, over/under voltage, phase loss, reversal, incorrect sequencing and rapid short cycling.
Digit 26 — Power Connection
0 = Terminal Block - Terminal Block to land incoming power wiring.
A = Non-Fused Disconnect Switch - Non-fusible disconnect switches do not incorporate fuses
into their enclosure and provide no circuit protection capability. The purpose of a non-fusible safety
switch is to provide an easy means to open and close a circuit.
B = Fused Disconnect Switch - Fusible disconnect switches combine fuses with the switch in a
single enclosure, providing an easy means to manually open and close the circuit while the fuses
protect against overcurrent.
C = High SCCR Fuse Block - Short-circuit current ratings provide the level of fault current that a
component or piece of equipment can safely withstand (based on a fire and shock hazard external to
the enclosure). A 100kA SCCR can have significant impact in meeting safety and insurance
requirements.
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