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136 Cooling and heating
Specifications
Temperature limits
Ambient temperature:
See chapter
on page
Minimum coolant inlet temperature:
Condensation or frost is not allowed. The minimum
coolant temperature to avoid condensation (at an atmospheric pressure of 1 bar /
100 kPa) is shown below as a function of the relative humidity (
φ
) and the ambient
temperature (
T
air
). To avoid all kind of condensation inside the converter: ABB highly
recommends to maintain / heat up the cooling 10 °C (+50 °F) above the ambient
temperature (ie, air temperature outside the converter), within the limits that the cooling
liquid minimum temperature is +5 °C (41 °F) and maximum temperature is +50 °C
(122 °F).
Maximum coolant inlet temperature:
50 °C (122 °F) without derating of the converter
output capacity. Range above 50 °C (122 °F) is allowed as follows:
Maximum temperature rise:
13 °C (55.4 °F); depends on mass flow.
Pressure limits
Base pressure:
100…150 kPa (recommended); 200 kPa (maximum). Base pressure
denotes the pressure of the system compared with the atmospheric pressure when the
cooling circuit is filled with coolant.
Maximum design pressure:
500 kPa
Recommended design maximum pressure:
380 kPa.
Note:
Contact ABB if you need to
rise the pressure over this limit. The pressure difference must be within given limits to
avoid malfunction due to excessive coolant flow.
T
air
(°C)
Min.
T
coolant
(°C)
φ
= 95%
φ
= 80%
φ
= 65%
φ
= 50%
φ
= 40%
5
4.3
1.9
-0.9
-4.5
-7.4
10
9.2
6.7
3.7
-0.1
-3.0
15
14.2
11.5
8.4
4.6
1.5
20
19.2
16.5
13.2
9.4
6.0
25
24.1
21.4
17.9
13.8
10.5
30
29.1
26.2
22.7
18.4
15.0
35
34.1
31.1
27.4
23.0
19.4
40
39.0
35.9
32.2
27.6
23.8
45
44.0
40.8
36.8
32.1
28.2
50
49.0
45.6
41.6
36.7
32.8
55
53.9
50.4
46.3
42.2
37.1
Not allowed as standard but the coolant temperature must be 5 °C (41 °F) or above.
Consult an ABB representative if operation below coolant temperature 5 °C (41 °F) is
required.
Example:
At an air temperature of 45 °C (113 °F) and relative humidity of 65% the coolant
temperature may not be below +36.8 °C (98.2 °F).
Range
Converter output current derating
50 … 55 °C
(122 …131 °F)
2.5% per 1 °C (1.8 °F) temperature increase
Summary of Contents for ACS880-87LC-4000A/4021A-7
Page 4: ......
Page 10: ...10 ...
Page 17: ...Safety instructions 17 1 3 2 4 5 6 7 ...
Page 18: ...18 Safety instructions 8 9 ...
Page 28: ...28 Introduction to the manual ...
Page 52: ...52 Mechanical installation ...
Page 66: ...66 Planning the electrical installation ...
Page 74: ...74 Electrical installation Diagrams for the customer connections are presented below ...
Page 75: ...Electrical installation 75 optional Fast shutdown ...
Page 85: ...Maintenance 85 b c a Air flow direction 2 3 4 6 ...
Page 87: ...Maintenance 87 2 5 4 ...
Page 88: ...88 Maintenance 7 Arrow indicating the air flow direction 5 6 6 ...
Page 90: ...90 Maintenance Air flow circulation b a ...
Page 106: ...106 Maintenance ...
Page 124: ...124 Control units of the converter ...
Page 126: ...126 Dimension drawings ...
Page 127: ...Dimension drawings 127 ...
Page 128: ...128 Dimension drawings ...
Page 142: ...142 Cooling and heating ...