32
Every component relative to the configurable RCB1200, has undergone extensive testing, including HALT and Environmental
testing.
Their reliability has been calculated according to Telcordia Issue 1 standard and the following operating conditions:
Nominal input voltages (110 – 230 V
RMS
),
80% maximum load (960 W)
40 °C ambient temperature
50% operation duty.
Power chassis including 2x fans, 2x input boards, 2x winding boards:
4 FPMH (Failure Per Million Hours)
Output modules:
1 FPMH
Configured power supply reliability prediction:
MTBF = 10
6
* 1 / Total FPMH
Where Total FPMH is the sum of the FPMH relative to each component of the configured power supply.
Example:
It is required to predict the reliability of the power supply configured as follow, RCB1200-AABBCD00, operating in a 40 °C
environment, at 80% maximum load and a 50% duty cycle.
1200 W power chassis: 4.0 FPMH
A module: 1.0 FPMH
B module: 1.0 FPMH
C module: 1.0 FPMH
D module: 1.0 FPMH
Total FPMH 10.0 FPMH
Therefore, MTBF = 1000000 / 10.0 = 100000 hours
Reliability data is collected on an ongoing basis. Please contact ROAL Electronics or your distributor for the most up-to-date
reliability data or to get reliability prediction for a specifically configured power supply in certain operating conditions.
R
ELIABILITY
Roal Electronics, S.p.A. may change product specifications and accordingly the information presented in this document.
Customers are responsible for their products and applications using Roal Electronics, S.p.A. products. Roal Electronics,
S.p.A. assumes no liability from the use of its products outside of specifications. No license is granted to any intellectual
property rights by this document. ROAL ELECTRONICS, S.P.A. DISCLAIMS ALL REPRESENTATIONS AND WARRANTIES OF
ANY KIND, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF NONINFRINGEMENT,
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
Eu and RoW
ROAL Electronics S.p.A
Via Jesina 56/A
60022 – Castelfidardo (AN) - Italy
Tel: + 39 071 721461
Fax: + 39 071 72146 480
North America
ROAL Electronics USA, Inc.
701, Main St. Suite 405
Stroudsburg, PA18360
Phone: + 1 570 421 5750
Fax: +1 570 421 5687
Rev. 00 _ July 27
th
2012
DISTRIBUTED BY TEXIM EUROPE