Datasheet

PRELIMINARY
UB20.241
U–Series
24V, 20A, DC-UPS
16. RELIABILITY
Lifetime expectancy min. t.b.d. At 20A output current, 40°C
min. t.b.d. At 10A output current, 40°C
min. t.b.d. At 20A output current, 25°C
min. t.b.d. At 10A output current, 25°C
MTBF SN 29500, IEC 61709 t.b.d. At 20A output current, 40°C
t.b.d. At 20A output current, 25°C
MTBF MIL HDBK 217F t.b.d. At 20A output current , 40°C, ground benign GB40
t.b.d. At 20A output current , 25°C, ground benign GB25
The Lifetime expectancy shown in the table indicates the operating hours (service life) and is determined by the
lifetime expectancy of the built-in electrolytic capacitors. Lifetime expectancy is specified in operational hours.
Lifetime expectancy is calculated according to the capacitor’s manufacturer specification. The prediction model allows
a calculation of up to 15 years from date of shipment.
MTBF stands for Mean Time Between Failure, which is calculated according to statistical device failures and indicates
reliability of a device. It is the statistical representation of the likelihood of a unit to fail and does not necessarily
represent the life of a product.
17. EMC
The unit is suitable for applications in industrial environment as well as in residential, commercial and light industry
environment without any restrictions. The CE mark indicates conformance with EMC directive 2004/108/EC and the
low-voltage directive (LVD) 2006/95/EC.
A detailed EMC Report is available on request.
EMC Immunity
EN 61000-6-1, EN 61000-6-2
Generic standards
Electrostatic discharge EN 61000-4-2 Contact discharge
Air discharge
8kV
15kV
Criterion A*)
Criterion A *)
Electromagnetic RF field EN 61000-4-3 80MHz-2.7GHz 10V/m Criterion A
Fast transients (Burst) EN 61000-4-4 Out- and input lines 4kV Criterion A
Surge voltage EN 61000-4-5 Output + Æ -
Input + Æ -
+ / - Æ earth(housing)
500V
500V
1kV
Criterion A
Criterion A
Criterion A
Conducted disturbance EN 61000-4-6 0,15-80MHz 10V Criterion A
*) DIN-Rail earthed
**) Tested with coupling clamp
EMC Emission
EN 61000-6-3, EN 61000-6-4 Generic standards
Radiated emission EN 55011, EN 55022 Class B
This device complies with FCC Part 15 rules.
Operation is subjected to the following two conditions: (1) this device may not cause harmful interference, and (2) this
device must accept any interference received, including interference that may cause undesired operation.
*) Informative measurement with voltage probe
Switching frequencies
The DC-UPS has three converters with one switching
frequency included.
Switching frequency of buck-boost converter and battery
chargers
100kHz Constant frequency
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
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