11.98 Technical data
Siemens AG 6SE7087-6AC85-0AA0 ENGLISH
14-3
Common Rectifier Operating instructions
14.1 Power reduction at increased coolant temperature
The rated current must be reduced according to Figure 14.2 for cooling medium temperatures exceeding 40°C.
Cooling medium temperatures > 50°C are not permissible.
100
90
80
70
60
10 20 30 40 50
permissible rated current
in %
Coolant temperature
in °C
75
Figure 14.2 Maximum permitted rated current depending on coolant temperature
14.2 Power reduction at altitudes > 1000m above MSL
The rated current must be reduced as shown in Figure 14.3 in the event of installation altitudes > 1000 m above
mean sea level. Installation altitudes > 2000 m above MSL (please enquire)
permissible rated current
in %
90
80
70
0 1000 2000 3000 4000
Installation altitude
in m above sea level
100
60
permissible rated current
in %
90
80
70
0 1000 2000 3000 4000
Installation altitude
in m above sea level
100
60
Figure 14.3 Maximum values for rated current and rated voltage depending on installation altitude
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