506 01 2303 01
15
Specifications are subject to change without notice.
Table 8 – Electrical Data — ChS072--121 60 Hz Units
UNIT
NOMINAL
POWER
SUPPLY
VOLTAGE
RANGE
}
COMPRESSOR
WITHOUT POWERED CONVENIENCE OUTLET
No. 1
No. 2
OFM (ea)
POWER SUPPLY
DISCONNECT SIZE
V---Ph---Hz
MIN
MAX
RLA
LRA
RLA
LRA
QTY
FLA
MCA
Fuse or
HACR
Brkr
FLA
LRA
CHS072*A/B
Units produced
on or after
02/09/2015
208/230---3---60
187
253
19.6
136
---
---
2
1.5
28/28
45/45
26/26
142/142
460---3---60
414
506
8.2
66
---
---
2
0.8
12
20
11
70
575---3---60
518
633
6.6
55
---
---
2
0.7
10
15
9
59
CHS072*A/B
Units produced
on or prior to
02/08/2015
208/230---3---60
187
253
19.0
123
---
---
2
1.5
26.8/26.8
45/45
25/25
129/129
460---3---60
414
506
9.7
62
---
---
2
0.8
13.7
20
13
66
575---3---60
518
633
7.4
50
---
---
2
0.7
10.7
15
10
54
CHS072*G/H
208/230---3---60
187
253
17.5
136
---
---
2
1.5
25/25
30/30
24/24
142/142
460---3---60
414
506
8.4
66
---
---
2
0.8
13
20
12
70
575---3---60
518
633
6.3
55
---
---
2
0.7
10
15
9
59
CHS091*A/B
208/230---3---60
187
253
25.2
164
---
---
2
1.5
35/35
50/50
32/32
170/170
460---3---60
414
506
12.7
100
---
---
2
0.8
18
30
16
104
575---3---60
518
633
11.0
78
---
---
2
0.7
16
25
14
82
CHS121*A/B
208/230---3---60
187
253
30.8
225
---
---
2
1.5
42/42
60/60
39/39
231/231
460---3---60
414
506
16.7
114
---
---
2
0.8
23
30
21
118
575---3---60
518
633
12.8
80
---
---
2
0.7
18
30
16
84
CHS121*G/H
208/230---3---60
187
253
15.9
110
15.6
110
2
1.5
39/39
50/50
40/40
226/226
460---3---60
414
506
7.7
52
7.7
52
2
0.8
19
25
20
108
575---3---60
518
633
5.7
39
5.8
39
2
0.7
15
20
15
82
Legend and Notes for Table 8
LEGEND:
BRKR
--- Circuit breaker
CO
--- Convenient outlet
FLA
--- Full Load Amps
LRA
--- Locked Rotor Amps
MCA
--- Minimum Circuit Amps
Protection
NEC
--- National Electrical Code
PWRD CO
--- Powered convenient outlet
RLA
--- Rated Load Amps
UNPWR CO
--- Unpowered convenient outlet
NOTES
:
1. 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 or HACR breaker. Canadian units may be fuse or circuit
breaker.
2. The MCA values are calculated in accordance with The NEC.
Article 440.
3. Motor RLA and LRA values are established in accordance
with Underwriters’ Laboratories (UL). Standard 1995.
4. The 575---v units are UL, Canada---listed only.
5.
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 de-
termine the percentage of voltage imbalance.
Example: Supply voltage is 230-3-60
% Voltage Imbalance
= 100 x
max voltage deviation from average voltage
average voltage
AB = 224 v
BC = 231 v
AC = 226 v
Average Voltage =
(224 + 231 + 226)
=
681
3
3
=
227
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
= 100 x
4
227
= 1.76%
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.
