SIEMENS
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Siemens D 35 · 2017
4
SINAMICS G120P built-in and wall-mounted units
PM330 Power Modules, 160 kW to 630 kW
PM330 Power Modules
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Characteristic curves
Derating data
The PM330 Power Modules and the associated system compo-
nents are rated for an ambient temperature of 45
°C (113 °F) and
installation altitudes of up to 1000 m (3281 ft) above sea level.
At ambient temperatures of > 45 °C (113 °F), the output current
must be reduced. Ambient temperatures above 55 °C (131 °F)
are not permissible.
At installation altitudes > 1000 m (3281 ft) above sea level, it
must be taken into account that the air pressure, and therefore
air density, decreases as the height increases. As a conse-
quence, the cooling efficiency and the insulation capacity of the
air also decrease. Due to the reduced cooling efficiency, it is
necessary, on the one hand, to reduce the ambient temperature,
and on the other hand, to lower heat loss in the built-in unit by
reducing the output current.
As additional measure for installation altitudes from 2000 m
(6562 ft) up to 4000 m (13124 ft), an isolating transformer is
required in order to reduce transient overvoltages according to
EN 60664-1.
Automatic adjustment of pulse frequency
In the factory setting, the drive starts with a pulse frequency of
4 kHz and reduces the pulse frequency automatically to the
associated required frequencies when loaded. When the load
decreases, the pulse frequency is increased automatically up to
4 kHz. The values of the rated current apply to a pulse frequency
of 2 kHz and an ambient temperature of 45 °C (113 °F) and are
reached at any time by the automatic adaptation of the output
pulse frequency.
Current derating as a function of the installation altitude and the
ambient temperature
At installation altitudes above 1000 m (3281 ft), the permissible
output current can be compensated to a certain extent using the
ambient temperature.
Current derating as a function of the installation altitude and the ambient temperature for Power Modules PM330
frame size GX
Current derating as a function of the installation altitude and the ambient temperature for Power Modules PM330
frame sizes HX and JX
Note:
The connected motors and power elements must be considered
separately.
Note:
The operating temperature ranges of the Control Units must be
taken into account
(see technical specifications of Control
Units)
.
Installation altitude
above sea level
Current derating factor (in % of the rated output current) at an ambient temperature of
m (ft)
20 °C (68 °F)
25 °C (77 °F)
30 °C (86 °F)
35 °C (95 °F)
40 °C (104 °F)
45 °C (113 °F)
50 °C (122 °F)
55 °C (131 °F)
0 ... 1000 (0 ... 3281)
93 %
85 %
1001 ... 1500 (3284 ... 4921)
96 %
89 %
81 %
1501 ... 2000 (4925 ... 6562)
100 %
99 %
92 %
85 %
78 %
2001 ... 2500 (6565 ... 8202)
94 %
88 %
81 %
74 %
2501 ... 3000 (8206 ... 9843)
96 %
90 %
83 %
77 %
71 %
3001 ... 3500 (9846 ... 11483)
97 %
91 %
85 %
79 %
73 %
67 %
3501 ... 4000 (11487 ... 13123)
98 %
92 %
86 %
81 %
75 %
69 %
64 %
Installation altitude
above sea level
Current derating factor (in % of the rated output current) at an ambient temperature of
m (ft)
20 °C (68 °F)
25 °C (77 °F)
30 °C (86 °F)
35 °C (95 °F)
40 °C (104 °F)
45 °C (113 °F)
50 °C (122 °F)
55 °C (131 °F)
0 ... 1000 (0 ... 3281)
93 %
85 %
1001 ... 1500 (3284 ... 4921)
97 %
89 %
82 %
1501 ... 2000 (4925 ... 6562)
100 %
93 %
86 %
79 %
2001 ... 2500 (6565 ... 8202)
97 %
90 %
83 %
76 %
2501 ... 3000 (8206 ... 9843)
94 %
87 %
80 %
74 %
3001 ... 3500 (9846 ... 11483)
96 %
90 %
84 %
77 %
71 %
3501 ... 4000 (11487 ... 13123)
98 %
92 %
86 %
80 %
74 %
68 %
© Siemens AG 2017