Technical Data 06.2006
6SE7087-6KP50 Siemens AG
11-4 Operating Instructions SIMOVERT MASTERDRIVES
The derating of the permissible rated current for installation altitudes of
over 1000 m and at ambient temperatures below 45 °C is calculated as
follows:
Total derating = Derating
altitude
x Derating
ambient temperature
K = K
1
x K
2
It must be borne in mind that total derating must not be greater than 1!
Example: Altitude: 3000 m K
1
= 0.845
Ambient temperature: 35 °C K
2
= 1.125
→ Total derating = 0.845 x 1.125 = 0.95
List of unit options
Unit designation
Year of manufacture
Month of manufacture
Fig. 11-2 Example of rating plate (applies only <22 kW)
The date of manufacture can be derived as follows:
Character Year of manufacture: Character Month of manufacture
U
V
W
X
2006
2007
2008
2009
1 to 9
O
N
D
January to September
October
November
December
Table 11-2 Assignment of characters to the month and year of manufacture
NOTE
Rating plate
Date of manufacture
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