26
STANDARD SINGLE INPUT POWER CONFIGURATION
LEGEND
NOTES:
1. Each main power source must be supplied from a field-supplied fused
electrical service with a (factory-installed or field-installed) disconnect
located in sight from the unit.
2. Control circuit power must be supplied from a separate source through
a field-supplied disconnect. An optional control transformer may be
used to provide control circuit power from the main unit power supply.
3. Maximum instantaneous current flow (ICF) during start-up is the point
in the starting sequence where the sum of the LRA for the start-up
compressor, plus the total RLA for all running compressors is at a
maximum.
4. Maximum incoming wire size for each terminal block is 500 kcmil.
5. Maximum allowable phase imbalance is: voltage, 2%; amps, 5%.
6. Use copper conductors only.
7. The MOCP is calculated as follows:
MOCP = (2.25) (largest RLA) + the sum of the other RLAs. Size the
fuse one size down from the result. The RLAs are listed on the
nameplate.
The recommended fuse size in amps (RFA) is calculated as follows:
RFA = (1.50) (largest RLA) + the sum of the other RLAs. Size the fuse
one size up from the result. The RLAs are listed on the nameplate.
30XW
UNIT
SIZE
UNIT VOLTAGE
NO. POWER
SUPPLY
CONDUCTORS
MCA MOCP
ICF
REC FUSE
SIZE
CONTROL CIRCUIT
V-Ph-Hz
Supplied
V-Ph-Hz
MCA and
MOCP
Min Max WD XL
325
200-3-60 187 220 9 920.3 1200 1347.0 — 1200 115-1-60 20
230-3-60 207 253 9 799.0 1000 1171.1 — 1000 115-1-60 20
380-3-60 342 418 6 487.6 700 710.7 1753.7 600 115-1-60 20
460-3-60 414 506 6 401.0 500 586.2 1448.2 450 115-1-60 20
575-3-60 518 633 3 317.3 450 467.0 1157.0 400 115-1-60 20
325
HM
200-3-60 187 220 12 1168.2 1600 1848.2 — 1600 115-1-60 20
230-3-60 207 253 9 1018.4 1200 1608.6 — 1200 115-1-60 20
380-3-60 342 418 6 614.5 800 973.1 2452.1 700 115-1-60 20
460-3-60 414 506 6 510.8 700 805.0 2027.0 600 115-1-60 20
575-3-60 518 633 6 406.8 500 642.8 1620.8 450 115-1-60 20
350
200-3-60 187 220 9 920.3 1200 1347.0 — 1200 115-1-60 20
230-3-60 207 253 9 799.0 1000 1171.1 — 1000 115-1-60 20
380-3-60 342 418 6 487.6 700 710.7 1753.7 600 115-1-60 20
460-3-60 414 506 6 401.0 500 586.2 1448.2 450 115-1-60 20
575-3-60 518 633 3 317.3 450 467.0 1157.0 400 115-1-60 20
350
HM
200-3-60 187 220 12 1168.2 1600 1848.2 — 1600 115-1-60 20
230-3-60 207 253 9 1018.4 1200 1608.6 — 1200 115-1-60 20
380-3-60 342 418 6 614.5 800 973.1 2452.1 700 115-1-60 20
460-3-60 414 506 6 510.8 700 805.0 2027.0 600 115-1-60 20
575-3-60 518 633 6 406.8 500 642.8 1610.8 450 115-1-60 20
400
200-3-60 187 220 9 1041.3 1200 1400.8 — 1200 115-1-60 20
230-3-60 207 253 9 902.9 1200 1217.3 — 1200 115-1-60 20
380-3-60 342 418 6 545.2 700 736.3 1779.3 700 115-1-60 20
460-3-60 414 506 6 452.9 600 609.3 1471.3 600 115-1-60 20
575-3-60 518 633 3 366.3 500 488.8 1178.6 450 115-1-60 20
400
HM
200-3-60 187 220 12 1329.8 1600 1920.0 — 1600 115-1-60 20
230-3-60 207 253 12 1156.7 1600 1670.1 — 1600 115-1-60 20
380-3-60 342 418 6 700.9 1000 1011.5 2490.5 800 115-1-60 20
460-3-60 414 506 6 579.8 800 835.7 2057.7 700 115-1-60 20
575-3-60 518 633 6 464.4 600 668.4 1646.4 600 115-1-60 20
ICF — Maximum Instantaneous Current Flow
HM — Heat Machine Units
LRA — Locked Rotor Amps
MCA — Minimum Circuit Ampacity (for wire sizing)
MOCP — Maximum Overcurrent Protection
RLA — Rated Load Amps
WD — Wye-Delta Start
XL — Across-the-Line Start
Electrical data
