Redundant power supply
Duplex DC power supply system

The PCSR-150 series power supplies are modular DC power supplies for use in 
computer and RAID systems. Its modular architecture allows you to build a redundant 
power supply system, PCSR-150-R2H/R2V, by duplex (parallel) operation of two 
PCSR-150-S2S plug-in modules. Both of lateral mounting system PCSR-150-R2H and 
longitudinal mounting system PCSR-150-R2V accommodate two PCSR-150-S2S 
modules.

The paralleled PCSR-150-S2S modules automatically share the output current equally 
between them. Thus, undesired imbalance of the output currents is avoided. 
If either PCSR-150-S2S module fails, the other module solely feeds a load current. 
The PCSR-150-R2H/R2V is capable of outputting a maximum of 300 W compared to 
the rated output power of 150 W (because each PCSR-150-S2S shares the rated output 
power with the other module). To ensure accurate output voltages, the DC outputs are 
compensated for the voltage drop across the output current summing diodes.

Each PCSR-150-S2S module can be replaced with new one without shutting down 
the system. This "hot-swappable" module design facilitates ease of maintenance and 
reduces your total cost of ownership (TCO).

PCSR-150 series Power Supply Configuration and Selection Guide