Trane Optimus RTHD, Installation, Operation And Maintenance Manual

Page: 40 / 96

Installation Electrical
40 RTHD-SVX01K-EN
Electrical Data Table Information
Compressor motor electrical data is provided in Table 11,
p. 39 and Table 12 for each compressor size. Rated load
amperes (RLA), locked rotor wye amperes (LRA) and
expected inrush for the Wye-delta configurations are
shown.
Although the terms “LRA” and “expected inrush” are
often used interchangeably, the distinction applied here is
that LRA is the rated inrush for the motor, but expected
inrush is that allowed by the starter, based on the specific
configuration. Selecting starters in the Wye-delta
configuration lowers expected inrush vs. the Delta (or
“across-the- line”) configuration.
The RLA is based on the motor’s performance when
reaching full rated horsepower. The kW rating of the motor
will equal or exceed the kW requirement indicated by the
TOPSS™ selection program at design conditions. If motor
kW draw at design conditions is less than the kW rating of
the motor, the RLA at design conditions is determined by
multiplying the motor RLA (at the desired voltage) by this
ratio: design kW/ motor kW rating. This calculation is
performed within the computer selection program,
making RLA available as part of the design predictions.
Predicted values include power factor variation from point
to point.
Optimus™ chillers are designed to operate satisfactorily
over a utilization range of ±10 percent of the standard
design voltages: (a) 200V, 230V, 380V, 460V, and 575V for
60 Hertz, 3- phase, and (b) 380V, 400V, 415V for 50 Hertz,
3-phase.
Units with AFD Option
Installer-Supplied Components
Customer wiring interface connections are shown in the
electrical schematics and connection diagrams that are
shipped with the unit. The installer must provide the
following components if not ordered with the unit:
• Power supply wiring (in conduit) for all field-wired
connections.
• All control (interconnecting) wiring (in conduit) for
field supplied devices.
• Fused-disconnect switches or circuit breakers.
Table 12. Compressor motor electrical data (50 Hz) —
standard units (wye-delta starter)
Compressor
Code
(a)
(a) Unit model number digits 6 & 7.
Voltage
(b)
(b) Voltage utilization ranges: 380V (342-418), 400V (360-440), 415V
(374-457).
Max kW
RLA @
Max
kW
(c)
(c) The RLA @ Max k@ is based on the performance of the motor developing
full rated horsepower.
LRA
(Wye)
LRA
(Delta)
B1, B2
380 139 233 391 1229
400 145 233 412 1296
415 148 233 428 1348
C1, C2
380 201 349 456 1414
400 209 349 480 1488
415 213 349 498 1544
D1, D2, D3
380 271 455 711 2303
400 280 455 748 2424
415 284 455 776 2515
E3
380 288 488 711 2303
400 301 488 748 2424
415 306 488 776 2515
Table 13. Electrical data — units with AFD
Voltage
Applied Range
(Model Number
digits 56-58)
Estimated Power
Loss (W)
575V 60 Hz
0 - 126 1739
127 - 150 2099
151 - 185 2646
186 - 234 3071
235 - 279 3719
280 - 316 4460
317 - 366 5023
460V 60 Hz
0 - 176 2257
177 - 223 2719
224 - 280 3622
281 - 335 3561
336 - 411 4558
412 - 455 5703
380V 60 Hz
0 - 197 2555
198 - 241 2949
242 - 292 3764
293 - 367 4109
368 - 446 5129
447 - 549 6663
380V 50 Hz
400V 50 Hz
415V 50 Hz
0 - 197 2555
198 - 241 2949
242 - 292 3764
293 - 367 4109
368 - 446 5129
447 - 549 6663
Note:
AFD input amps are shown in the RLA field of the unit nameplate.