Uninterruptible power supply effective power 865 w apparent power 1 500 va outputs 6 x schuko inputs 1 x schuko interfaces usb rs 232 nominal voltage 230 v bridging time 37 min bridging time at minimum load 685 minutes frequency range 47 63 hz yield in 988 input voltage 176 294 output voltage 230 v battery technology lead acid number of batteries 1 battery charging time 8 h protective measures power failure protection surge protectio