18
Table 9 – Electrical Data — 38AUD*16--25 50 Hz Units
UNIT
V-Ph-Hz
VOLTAGE
RANGE‡
COMPRESSOR 1
COMPRESSOR 2
OFM (ea)
MCA
FUSE
SIZE
MIN
MAX
RLA
LRA
RLA
LRA
WATTS
FLA
SIZE
38AUD*16
400---3---50
380
420
12.2
101
12.2
101
325
0.7
29.6
40
38AUD*25
400---3---50
380
420
16.7
111
16.7
111
325
0.7
40.4
50
Legend and Notes for Table 9
LEGEND:
FLA
--- Full Load Amps
LRA
--- Locked Rotor Amps
MCA
--- Minimum Circuit Amps
LRA
--- Locked rotor amps
NEC
--- National Electrical Code
RLA
--- Rated Load Amps
‡
Units are suitable for use on electrical systems where voltage
supplied to the unit terminals is not below or above the listed
limits.
NOTES
:
1. The MCA values are calculated in accordance with the NEC.
Article 440.
2. Motor RLA and LRA values are established in accordance
with Underwriters’ Laboratories (UL). Standard 1995.
3.
Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply
voltage is greater than 2%. Use the following formula to
determine the percentage of voltage imbalance.
Example: Supply voltage is 400-3-50
% Voltage Imbalance
= 100 x
max voltage deviation from average voltage
average voltage
AB = 394 v
BC = 401 v
AC = 396 v
Average Voltage =
(394 + 401 + 396)
=
1191
3
3
=
397
Determine maximum deviation from average voltage.
(AB) 397 – 394 = 3 v
(BC) 401 – 397 = 4 v
(AC) 397 – 396 = 1 v
Maximum deviation is 4 v.
Determine percent of voltage imbalance.
% Voltage Imbalance
= 100 x
4
397
= 1.00%
This amount of phase imbalance is satisfactory as it is below the
maximum allowable 2%.
IMPORTANT
: If the supply voltage phase imbalance is more than
2%, contact your local electric utility company immediately.
38A
U
D
Summary of Contents for 38AUD 16 Series
Page 21: ...21 CIRCUIT 1 CIRCUIT 2 C10946 Fig 16 38AUD 16 Charging Chart Novation 38AUD...
Page 22: ...22 C10949 Fig 17 38AUD 16 Charging Chart RTPF 38AUD...
Page 23: ...23 CIRCUIT 1 CIRCUIT 2 C10950 Fig 18 38AUD 25 Charging Chart RTPF 38AUD...
Page 24: ...24 C10084A Fig 19 Typical 38AUD 16 Wiring Diagram 38AUD...
Page 25: ...25 C10085A Fig 20 Typical 38AUD 25 Wiring Diagram 38AUD...