XT40.721, XT40.722

– X-Series

Jan. 2007 / Rev. 1.0 DS-XT40.72x-EN All parameters are specified at 72V 13.3A, 3x400Vac (XT40.721) or 3x480Vac (XT40.722),

25°C ambient and after a 5 minutes run-in time unless otherwise noted.

www.pulspower.com Phone +49 89 9278 0

Germany

19/19

Mounting orientations other than input terminals on the bottom and output on the top require a reduction in

continuous output power or a limitation in the max. allowed ambient temperature. The amount of reduction defines

the lifetime expectancy of the power supply. Therefore, two different derating curves for continuous operation can

be found below:

Curve A1

Recommended output current to achieve a minimum lifetime expectancy of 50 000h at 40°C ambient.

Curve A2

Max allowed output current for a safe operation (results approx. in half the lifetime expectancy of A1).

Fig. 25-2

Mounting

Orientation A

Standard

Orientation

Power

Supply

OUTPUT

INPUT

Output Current

0

10

20

30

40

60°C

3.3

6.7

10

13.3A

50

A1

Ambient Temperature

Fig. 25-3

Mounting

Orientation B

(Upside down)

Output Current

0

10

20

30

40

60°C

3.3

6.7

10

13.3A

50

A2

Ambient Temperature

A1

Fig. 25-4

Mounting

Orientation C

(Table-top

mounting)

Output Current

0

10

20

30

40

60°C

3.3

6.7

10

13.3A

50

Ambient Temperature

A1

A2

Fig. 25-5

Mounting

Orientation D

(Horizontal cw)

Output Current

0

10

20

30

40

60°C

3.3

6.7

10

13.3A

50

Ambient Temperature

A1

A2

Fig. 25-6

Mounting

Orientation E

(Horizontal ccw)

Output Current

0

10

20

30

40

60°C

3.3

6.7

10

13.3A

50

Ambient Temperature

A1

A2