Siemens simovert masterdrives Betriebsanleitung Seite 291

05.2006
The derating of the permissible rated current for installation altitudes of
over 1000 m and at ambient temperatures below 40 °C is calculated as
follows:
Total derating = Derating
K = K
It must be borne in mind that total derating must not be greater than 1!
NOTE
Example:
Rating plate
Fig. 11-2
The date of manufacture can be derived as follows:
Date of manufacture
Table 11-2
Siemens AG 6SE7087-6JK50
SIMOVERT MASTERDRIVES
altitude
x K
1 2
Altitude: 3000 m
Ambient temperature: 35 °C
⇒ Total derating = 0.845 x 1.125 = 0.95
Rating plate
Character Year of manufacture:
U 2006
V 2007
W 2008
X 2009
Assignment of characters to the month and year of manufacture
Operating Instructions
x Derating
ambient temperature
K = 0.845
1
K = 1.125
2
Unit designation
List of unit options
Year of manufacture
Month of manufacture
Character Month of manufacture
1 to 9 January to September
O October
N November
D December
Technical Data
11-3