PISA11.CLASS2
PISA11-Series
P
ROTECTION
M
ODULE
24V,
4
O
UTPUTS
13.
P
OWER
L
OSSES
PISA11.CLASS2
No-load losses
typ.
1.0W
Losses at typical output loads
*)
typ.
1.6W
*)
Typical value when all output channels are loaded with 50% of its nominal current.
14.
R
ELIABILITY
The PISA protection modules are extremely reliable and use only the highest quality materials. The number of critical
components such as electrolytic capacitors have been reduced.
PISA11.CLASS2
Applied load
4x1.9A
Lifetime expectancy
*)
220 000h *)
at 40°C
622 000h *)
at 25°C
MTBF
**)
SN 29500, IEC 61709
2 198 000h
at 40°C
3 784 000h
at 25°C
MTBF
**)
MIL HDBK 217F, GB
734 000h
at 40°C
1 009 000h
at 25°C
*) The Lifetime expectancy shown in the table indicates the minimum operating hours (service life) and is determined by the lifetime
expectancy of the built-in electrolytic capacitors. Lifetime expectancy is specified in operational hours and is calculated according to the
capacitor’s manufacturer specification. The manufacturer of the electrolytic capacitors only guarantees a maximum life of up to 15 years
(131 400h). Any number exceeding this value is a calculated theoretical lifetime which can be used to compare devices.
**)
MTBF
stands for
M
ean
T
ime
B
etween
F
ailure, which is calculated according to statistical device failures, and indicates reliability of a
device. It is the statistical representation of the likelihood of a unit to fail and does not necessarily represent the life of a product.
The MTBF figure is a statistical representation of the likelihood of a device to fail. A MTBF figure of e.g. 1 000 000h means that
statistically one unit will fail every 100 hours if 10 000 units are installed in the field. However, it can not be determined if the failed unit
has been running for 50 000h or only for 100h.
Feb. 2012 / Rev. 1.3 DS-PISA11.CLASS2 - data sheet -
All parameters are specified at 24Vdc input, 25°C ambient temperature and a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278-0 Germany
11/19
