Danfoss DSH090 Application Manual page 40

Scroll compressors, DSH090 to DSH600 | Electrical connections
Table 21: Motor voltage
Frequency Motor voltage code
50 Hz Nominal voltage
60 Hz Nominal voltage
 NOTE:
Voltage range: Nominal voltage ± 10%. The voltage range indicates where the compressor can run in the majority
of the application envelope. A boundary voltage supply which accumulates under specific conditions such as high
ambiance, high superheat, or map boundary conditions, may lead to a compressor trip.
Voltage imbalance
The maximum allowable voltage imbalance is 2%. Voltage imbalance causes high amperage over one or several
phases, which in turn leads to overheating and possible motor damage. Voltage imbalance is given by the formula:
% voltage imbalance =
Vavg Mean voltage of phases 1, 2, 3.
V1-2 Voltage between phases 1 and 2.
V1-3 Voltage between phases 1 and 3.
V2-3 Voltage between phases 2 and 3.
IP rating
The compressor terminal box according to IEC60529 is IP54 for all models when correctly sized IP54 rated cable
glands are used.
First numeral, level of protection against contact and foreign objects
5 - Dust protected
Second numeral, level of protection against water
4 - Protection against water splashing
Terminal box temperature
The temperature inside the terminal box must not exceed 70°C (158°F). Consequently, if the compressor is installed
in an enclosure, precautions must be taken to avoid that the temperature around the compressor and in the
terminal box would rise too much. A ventilation installation on the enclosure panels may be necessary. If not, the
electronic protection module may not operate properly. Any compressor damage related to this will not be covered
by Danfoss warranty. In the same manner, cables must be selected in a way that ensures the terminal box
temperature does not exceed 70°C (158°F).
Three phase electrical characteristics
Table 22: Motor voltage code 3
Compressor model
DSH090
DSH105
DSH120
DSH140
DSH161
DSH184
DSH240
DSH295
DSH381
DSH485
© Danfoss | Climate Solutions | 2022.10
Code 3
-
208-230V-3ph
| Vavg − V1−2 | + | Vavg − V1−3 | + | Vavg − V2−3 |
LRA
A
203
267
267
304
315
351
485
560
717
761
Code 4
380-415V-3ph
460V-3ph
2 × Vavg
RLA Max. operating current
A
31
36
44
46
49
54
75
87
110
143
Code 7 Code 9
-
575V-3ph 380-400V-3ph
× 100
Winding resistance
A Ω
38 0.39
45 0.27
48 0.27
56 0.24
64 0.22
71 0.22
103 0.16
112 0.13
152 0.09
185 0.10
AB288965961751en-001402 | 40
-