PIC480.241C, PIC480.241C-C1
PIANO-Series
24V,
20A,
480W,
S
INGLE
P
HASE
I
NPUT
Mar. 2021 / Rev. 1.2 DS-PIC480.241C-EN
All parameters are typical values specified at 24V, 20A output, 230Vac input , 25°C ambient and after a 5 minutes run-in time
unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
8/19
9.
E
FFICIENCY AND
P
OWER
L
OSSES
Efficiency
typ.
95.7%
at 24V, 20A, 230Vac
Average efficiency
*)
typ.
95.2%
25% at 5A, 25% at 10A, 25% at 15A. 25% at 20A
Power losses
typ.
1.35W
at 24V, 0A, 230Vac
typ.
10.7W
at 24V, 10A, 230Vac
typ.
21.6W
at 24V, 20A, 230Vac
*) The average efficiency is an assumption for a typical application, where the power supply is loaded with 25% of the nominal load for
25% of the time, 50% of the nominal load for another 25% of the time, 75% of the nominal load for another 25% of the time and with
100% of the nominal load for the rest of the time.
Fig. 9-1
Efficiency vs. output current at 24V,
typ.
Fig. 9-2
Losses vs. output current at 24V, typ.
Efficiency
4
93
95
96
91
97%
20A
8
14 16
12
Output Current
18
10
6
94
92
Power Losses
0
4
8
16 18 20A
0
4
12
16
24W
8
12
20
14
10
6
2
Output Current
10.
L
IFETIME
E
XPECTANCY AND
MTBF
Lifetime expectancy
*)
93 000h
at 24V, 10A and 40°C, 230Vac
264 000h
*)
at 24V, 10A and 25°C, 230Vac
51 000h
at 24V, 20A and 40°C, 230Vac
144 000h
*)
at 24V, 20A and 25°C, 230Vac
MTBF
**)
SN 29500, IEC 61709
482 000h
at 24V, 20A and 40°C, 230Vac
894 000h
at 24V, 20A and 25°C, 230Vac
MTBF
**)
MIL HDBK 217F
207 000h
at 24V, 20A and 40°C, 230Vac;
Ground Benign GB40
279 000h
at 24V, 20A and 25°C, 230Vac;
Ground Benign GB25
45 000h
at 24V, 20A and 40°C, 230Vac;
Ground Fixed GF40
57 000h
at 24V, 20A and 25°C, 230Vac;
Ground Fixed GF25
*) The
Lifetime expectancy
shown in the table indicates the minimum operating hours (service life) and is determined by the lifetime
expectancy of the built-in electrolytic capacitors. Lifetime expectancy is specified in operational hours and is calculated according to the
capacitor’s manufacturer specification. The manufacturer of the electrolytic capacitors only guarantees a maximum life of up to 15 years
(131 400h). Any number exceeding this value is a calculated theoretical lifetime which can be used to compare devices.
**)
MTBF
stands for
M
ean
T
ime
B
etween
F
ailure, 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.
The MTBF figure is a statistical representation of the likelihood of a device to fail. A MTBF figure of e.g. 1 000 000h means that
statistically one unit will fail every 100 hours if 10 000 units are installed in the field. However, it can not be determined if the failed unit
has been running for 50 000h or only for 100h.
