In these new redundancy modules, for the first time traditional diodes have been replaced by MOSFETs. The benefits of the MOSFET are clear. The low on-resistance of the MOSFETs causes a considerably lower heat generation and voltage drop than when using diodes. At 40A output current, only 2.7W losses and a 50mV voltage difference is present between the input and output terminals with the YR80.241. With a traditional diode module, at least a drop of 500mV and losses of 20W will occur in a 40A scenario.
The modules are short-circuit proof, protected against reverse polarity and can be operated with full power between -40°C and +70°C. The units are self-supporting and do not need an auxiliary voltage even in case of a short on the output load or cabling. The narrow width (36mm for the 40A and 46mm for the 80A module) and the built-in distribution terminals for the negative poles makes a system integration easy. For global usage, a comprehensive international approval and safety package is available including ATEX certification.
For the first time, only one redundancy module is now required to build a 40A redundant system. It will be no longer necessary to have two separate modules for each power supply in this power range. PULS can now fit a 3-phase 40A 1+1 redundancy system in a smaller space than one of the existing SL40 3-phase supplies.
Redundancy Modules Click here for more information