Siemens 400 V / 210...590 A operating instructions Derating curves

Technical Data 01.2004

Permissible rated output voltage in % acc. to VDE 0110 / IEC 664-1

(not necessary acc. to UL / CSA)

100
75
50	1000	2000	3000	4000
0

Installation altitude above sea level in m

Permissible rated current in %

100
						Temp	Derating
75						[°C]	factor K2
						50	0.76
50						45	0.879
						40	1.0
25						35	1.125 *
						30	1.25 *
0
						25	1.375 *
0	10	20	30	40	50

Cooling-medium temp. in °C

Permissible rated current in %

100				Altitude	Derating
90				[m]	factor K1
				1000	1.0
80				2000	0.9
70				3000	0.845
				4000	0.8
60	1000	2000	3000	4000
0
	Installation altitude above sea level in m

*See the following Note

	Fig. 17-3	Derating curves
	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 = Deratingaltitude x Deratingambient temperature
	K = K1 x K2
NOTE
	It must be borne in mind that total derating must not be greater than 1!
	Example:	Altitude: 3000 m	K1 = 0.845
		Ambient temperature: 35 °C	K2 = 1.125

→Total derating = 0.845 x 1.125 = 0.95

17-6	6SE7087-6CX86-2BA1 Siemens AG
	Operating Instructions SIMOVERT MASTERDRIVES AFE