30KVA/60KWH Regen Compatible Elevator & Lighting Battery Backup System (UL924)

The 30KVA elevator & lighting battery backup system provides 2 hours of backup power to standard elevators, elevators with regenerative power, & emergency lighting. It is UL924 listed for quick permitting in the United States.  When utility power is present, the backup system keeps the batteries at 100% charge and then dissipates any excess regenerative power through the resistor bank. Once UL 1741SA certification is complete (estimated Q2 2021), a simple software change will allow the backup system to pass the excess regenerative power back to the building main panel so the power can be used by other electrical loads in the building to enhance overall building energy efficiency.  When utility power is not present, the backup system first uses the regenerative power to recharge the batteries and passes any extra power to the resistor bank to be dissipated as heat. After the first 2-4 elevator cycles, the batteries are typically sufficiently drained so that all the regenerative