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Siemens SIMOVERT MASTERDRIVES Operating Instructions Manual Page 76

Motion control, frequency inverter dc-ac compact plus type.
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Technical Data
NOTE
Rating plate
Date of manufacture
11-6
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
K = K
x K
1
2
It must be borne in mind that total derating must not be greater than 1!
Example:
Altitude: 3000 m
Ambient temperature: 35 °C
⇒ Total derating = 0.845 x 1.25 = 1.056 (= 1)
Fig. 11-2
Rating plate
The date of manufacture can be derived as follows:
Character
Year of manufacture:
J
K
L
M
Table 11-4
Assignment of characters to the month and year of manufacture
x Derating
altitude
ambient temperature
K
= 0.845
1
K
= 1.25
2
Character
1997
1 to 9
1998
O
1999
N
2000
D
Operating Instructions
10.99
Unit designation
List of unit options
Year of manufacture
Month of manufacture
Technology functions
released,
if cross is entered here
Month of manufacture
January to September
October
November
December
6SE7087-6KP50
Siemens AG
SIMOVERT MASTERDRIVES

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