GE Mark VIeS System Manual page 402

Output Data
Parallel Operation
Current Sharing
N + 1
Redundancy
Performance Requirements
Derating
Switching Frequency
Turn on Delay After Applying Input Power
Min Output Load
Ripple and Noise (20 MHz Bandwidth)
Item
Mean-time-between-failure (MTBF)
Item
Mounting Position
Mounting Location
Recommended Clearance Around Power
Supply for Full Power Output
Vertical Stacking of Power Supplies Operating at
Full Power
Dimensions
402 GEH-6855_Vol_II
Outputs
Specification
For n parallel connected devices, the output current can be increased to n x I
maximum of five devices can be connected in parallel.
If a fault occurs in the primary circuit of the first power supply unit, the second device
automatically takes over the entire power supply, without interruption, and vice versa.
Fully redundant with external decoupling Diode module
Refer to the curve in the applicable section,
Derating Curve or FET-OR Module Output Derating
Variable with load – resonant switching
< 0.5 s (typical)
< 1 s (typical) for P480W48 and P960Wxx
None
P120Wxx: < 40 mV pp
P240Wxx: < 50 mV pp
P480W24, P480W28: < 30 mV pp
P480W48, P400W40: < 80 mV pp
P960Wxx: < 100 mV pp
Reliability
Specification
Power Supply: > 500,000 h, according to IEC61709 (SN29500)
FET-OR Module: > 1,000,000 h at 40°C (104 °F)
Mounting
Phoenix Specification
Horizontally on all DIN-rails, according to EN 60715
Attention
25 mm (1 in) on either side, 127 mm (5 in) above and 76 mm (3 in) below
Not recommended. The convection cooling path is through the bottom and out the top. The
difference between inlet and exhaust air can be as high as 28°C (82 °F) at full power.
Refer to the specific power supply or redundancy module section in this chapter for unit
dimensions.
GEH-6855_Vol_II Mark VIeS Functional Safety Systems Volume II
Public Information
Power Supply Power Boost and Output
Curve.
It is very important that each supply is
mounted in a location with adequate
space for free convective airflow and
away from other heat sources.
. A
rated