Appendix A
Specifications
©
National Instruments Corporation
A-15
NI PS-15 Power Supply User Manual
Switching Frequency
175 kHz to 225 kHz ........................ input voltage dependent 24 V,
2.5 A
100 kHz to 130 kHz ........................ input voltage dependent 24 V, 5 A
Notes
This device complies with FCC Part 15 rules.
Operation is subjected to following two conditions: (1) this device may not cause harmful
interference, and (2) this device must accept any interference received, including
interference that may cause undesired operation.
Above an average output current of 2.7 A, the harmonic current standard EN 61000-3-2 is
not fulfilled.
Mains voltage dips
EN 61000-4-11
0% of 100 V
AC
0 V
AC
, 20 ms
Criterion A
40% of 100 V
AC
40 V
AC
, 200 ms
Criterion C
70% of 100 V
AC
70 V
AC
, 500 ms
Criterion A
0% of 200 V
AC
0 V
AC
, 20 ms
Criterion A
40% of 200 V
AC
80 V
AC
, 200 ms
Criterion C
70% of 200 V
AC
140 V
AC
, 500 ms
Criterion A
Voltage interruptions
EN 61000-4-11
0 V
AC
, 5000 ms
Criterion C
Powerful transients
VDE 0160
Over entire load range
750 V, 1.3 ms
Criterion A
Criterions:
A
: Power supply shows normal operation behavior within the defined limits.
C
: Temporary loss of function is possible. Power supply might shut-down and restarts by itself. No damages or hazards for
the power supply occur.
EMC Emission
EN 61000-6-4
Generic standards
Conducted emission
EN 55011, EN 55022, FCC Part 15,
CISPR 11, CISPR 22
Class B, input lines
EN 55022
Class A, output lines
Radiated emission
EN 55011, EN 55022
Class B
Harmonic input current
EN 61000-3-2
>2.7 A output current not fulfilled
Voltage fluctuations, flicker
EN 61000-3-3
fulfilled
