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NOMINAL
POWER
UNIT
SUPPLY
(V-Ph-Hz)
208/230-3-60
CHS183
460-3-60
575-3-60
e
208/230-3-60
CHS243
460-3-60
575-3-60
e
NOMINAL
POWER
UNIT
SUPPLY
(V-Ph-Hz)
208/230-3-60
CHS183
460-3-60
575-3-60
e
208/230-3-60
CHS243
460-3-60
575-3-60
e
NOTE(S):
a
Unbalanced 3-Phase Supply Voltage: Never operate a motor where a phase imbalance in supply voltage is greater than 2%. Use the formula below to determine the
percentage of voltage imbalance.
b
Motor RLA and LRA values are established in accordance with Underwriters Laboratories (UL), Standard 1995.
c
The MCA values are calculated in accordance with the NEC Article 440.
d
In compliance with NEC requirements for multimotor and combination load equipment (refer to NEC Articles 430 and 440), the overcurrent protective device for the unit
shall be fuse. Canadian units may be fuse or circuit breaker.
e
The 575-v units are UL, Canada-listed only.
max voltage deviation from average voltage
% Voltage
= 100 x
Imbalance
Example: Supply voltage is 230-3-60
AB = 224 v
A
B
C
BC = 231 v
AC = 226 v
MOTOR
(224 + 231 + 226)
Average Voltage =
Determine maximum deviation from average voltage.
(AB) 227-224 = 3 v
(BC) 231-227 = 4 v
(AC) 227-226 = 1 v
Maximum deviation is 4 v.
Determine percent of voltage imbalance.
% Voltage Imbalance = 100x
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.
16
Table 9 — Electrical Data — CHS183-243 60 Hz Units
COMPRESSOR
VOLTAGE
RANGE
No. 1
Min
Max
RLA
a
187
253
26.8
414
506
12.0
518
633
9.0
187
253
32.5
414
506
14.8
518
633
11.1
COMPRESSOR
VOLTAGE
RANGE
No. 1
Min
Max
RLA
a
187
253
26.8
414
506
12.0
518
633
9.0
187
253
32.5
414
506
14.8
518
633
11.1
average voltage
681
=
=
227
3
3
4
= 1.78%
227
Specifications subject to change without notice.
b
No. 2
OFM (ea)
LRA
RLA
LRA
Qty
164
25.0
164
3
94
12.2
100
3
65
9.9
78
3
240
28.2
240
4
130
14.7
130
4
94
11.3
94
4
b
No. 2
OFM (ea)
LRA
RLA
LRA
Qty
164
25.0
164
3
94
12.2
100
3
65
9.9
78
3
240
28.2
240
4
130
14.7
130
4
94
11.3
94
4
LEGEND
BRKR — Circuit Breaker
FLA
— Full Load Amps
LRA
— Locked Rotor Amps
MCA
— Minimum Circuit Amps Protection
NEC
— National Electrical Code
RLA
— Rated Load Amps
WITHOUT POWERED CONVENIENCE OUTLET
Power Supply
Fuse or
FLA
MCA
HACR
c
Brkr
d
1.5
67.8/67.8
90/90
0.8
31.9
40
0.7
25.2
30
1.5
79.6/79.6 100/100
0.8
38.6
50
0.7
29.7
40
WITH POWERED CONVENIENCE OUTLET
Power Supply
Fuse or
FLA
MCA
HACR
c
Brkr
d
1.5
63/63
80/80
0.8
29.7
40
0.7
23.5
30
1.5
74.8/74.8 100/100
0.8
36.4
50
0.7
28.0
35
CHS-180-240-01SI Rev. A
Disconnect Size
FLA
LRA
70/70
342/342
33
202
26
151
82/82
497/497
40
270
31
198
Disconnect Size
FLA
LRA
65/65
337/337
31
200
24
149
77/77
492/492
38
268
29
196
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