Datasheet

PRELIMINARY
UB20.241
U–Series
24V, 20A, DC-UPS
18. ENVIRONMENT
Operational temperature -40°C to +70°C Reduce output current above 60°C with
0.5A/°C
Battery charging between -10°C to +50°C*)
Storage temperature -40°C to +85°C Storage and transportation, except battery
Humidity 5 to 95% r.H. IEC 60068-2-30
Do not energize while condensation is present
Vibration sinusoidal
2-17.8Hz: ±1.6mm; 17.8-500Hz: 2g
2 hours / axis
IEC 60068-2-6
Shock
30g 6ms, 20g 11ms
3 bumps / direction, 18 bumps in total
IEC 60068-2-27
Over-voltage category III EN 50178
II EN 50178 above 2000m altitude
Degree of pollution 2 EN 50178, not conductive
*) Please be aware about battery specification.
19. PROTECTION FEATURES
Output protection Electronically protected against overload, no-load and short-circuits
Output over-voltage protection
in buffer mode
typ. 32Vdc
max. 35Vdc
In case of an internal defect, a redundant circuitry
limits the maximum output voltage. The output
automatically shuts-down and makes restart attempts.
Degree of protection IP20 EN/IEC 60529
Penetration protection > 3.5mm E.g. screws, small parts
Reverse battery polarity protection yes Max. –35Vdc;
Wrong battery voltage protection yes Max. +35Vdc
Battery deep discharge protection yes The limit is battery current dependent
Over temperature protection yes Output shut-down with automatic restart
Internal input fuse no
20. SAFETY
Output voltage SELV IEC/EN 60950-1
PELV EN 60204-1, EN 50178, IEC 60364-4-41
Max. allowed voltage between any input, output or signal pin and ground:
60Vdc or 42.4Vac
Class of protection III PE (Protective Earth) connection is not required
Isolation resistance > 5MOhm Power port to housing, 500Vdc
September 2012 / Rev. 1.3 DS-UB20.241-EN preliminary
All parameters are specified at an input voltage of 24V, 20A output load, 25°C ambient and after a 5 minutes run-in time
unless otherwise noted. It is assumed that the input power source can deliver a sufficient output current.
www.pulspower.com Phone [phone] Germany
12/23