Thread Links Date Links
Thread Prev Thread Next Thread Index Date Prev Date Next Date Index

RE: 48V bus topics

Title: RE: 48V bus topics


If you have a converter after the battery, I have no doubt that it can be designed for an input voltage of 36 V to 72 V. Unfortunatrely, your typical 24-cell VRLA battery (floating at 54 V +/- 1% rectifier regulation) can typically (and safely) be discharged only to an end voltage of 1.75 V/cell x 24 cells = 42.00 V. For very short reserve times (such as 15 minutes), the end voltage could go to about 1.65 x 24 = 39.6 V. Any discharge below this voltage will damage the battery, the supplier will consider it abuse and outside his warranty.

Best regards,

Nick Tullius
Astec Advanced Power Systems
Tel 613 763-2359

Fax 613 763-7155