Electrical data, connections and wiring
Three phase electrical
characteristics
The MCC is the current at which the motor
protection trips under maximum load and
low voltage conditions. This MCC value is the
maximum at which the compressor can be
operated in transient conditions and out of
the application envelope. Above this value, the
internal motor protection or external electronic
module will cut-out the compressor to protect
the motor.
Locked Rotor Amp value is the higher average
current as measured on mechanically blocked
compressor tested under nominal voltage. The
LRA value can be used as rough estimation for
the starting current. However in most cases, the
real starting current will be lower. A soft starter
can be applied to reduce starting current.
MCC (Maximum Continuous
Current)
LRA (Locked Rotor Amp)
The max. operating current is the current when
the compressors operates at maximum load
conditions and 10% below nominal voltage
(+15°C evaporating temperature and +68°C
condensing temperature).
Max Oper. A can be used to select cables and
contactors.
In normal operation, the compressor current
consumption is always less than the Max Oper. A.
value.
Max. operating Current
Compressor model
LRA
MCC
Max Operating
current
Winding
Resistance
A
A
A
Ω
Motor voltage code 3
200-230V / 3ph / 60 Hz
WSH090
203
43
42
0.39
WSH105
267
51
48
0.27
WSH120
267
61
54
0.27
WSH140
304
64
59
0.24
WSH161
315
69
68
0.22
WSH184
351
75
78
0.20
Motor voltage code 4
380-400 V / 3ph / 50 Hz
460V / 3ph / 60hZ
WSH090
98
22
18
1.47
WSH105
142
25
21
1.05
WSH120
142
29
23
1.05
WSH140
147
30
27
0.92
WSH161
158
33
30
0.83
WSH184
197
39
34
0.83
Motor voltage code 7
500 V / 3ph / 50 Hz
575 V / 3 ph / 60 Hz
WSH090
84
18
15
2.34
WSH105
103
23
17
1.57
WSH120
103
24
19
1.57
WSH140
122
26
21
1.38
WSH161
136
29
23
1.32
WSH184
135
34.7
27
1.32
Motor voltage code 9
380 V / 3ph / 60 Hz
WSH090
124
26
22
1.05
WSH105
160
33
25
0.72
WSH120
160
35
28
0.72
WSH140
168
37
32
0.62
WSH161
177
41
35
0.57
WSH184
239
50.8
40
0.57
12
FRCC.PC.028.A5.02
Application Guidelines
