Appendix A
Specifications
NI PS-16 Power Supply User Manual
A-10
ni.com
Dielectric Strength
Notes
The output voltage is floating and has no ohmic connection to ground.
To fulfill the PELV requirements according to EN60204-1 § 6.4.1, we recommend that
either the + pole, the – pole or any other part of the output circuit should be connected to
the protective earth system. This helps to avoid situations in which a load starts
unexpectedly or can not be switched off when unnoticed earth faults occur.
Table A-1.
Reliability Specifications
Minimum
Maximum
AC
100 V
AC
120 V
AC
230 V
Lifetime expectancy
Minimum
38,000 hours
50,000 hours
75,000 hours
40 °C, 24 V, 10 A
Minimum
27,000 hours
34,000 hours
53,000 hours
40 °C, 24 V, 12 A
Minimum
93,000 hours
99,000 hours
118,000 hours
40 °C, 24 V, 5 A
Minimum
108,000 hours
15 years
15 years
25 °C, 24 V, 10 A
MTBF SN 29500,
IEC 61709
—
612,000 hours
638,000 hours
821,000 hours
40 °C, 24 V, 10 A
520,000 hours
542,000 hours
698,000 hours
40 °C, 24 V, 12 A
1,019,000 hours
1,058,000 hours
1,393,000 hours
25 °C, 24 V, 10 A
MTBF MIL HDBK 217F
—
456,000 hours
447,000 hours
472,000 hours
40 °C, 24 V, 10 A,
Ground Benign
GB40
410,000 hours
402,000 hours
425,000 hours
40 °C, 24 V, 12 A,
Ground Benign
GB40
632,000 hours
628,000 hours
653,000 hours
25 °C, 24 V, 10 A,
Ground Benign
GB25