•24 V DC, 36 W output
78.12....2400 78.12....1200 78.36
Range of modular DC power supplies
•High efficiency (up to 91%)
•Low (< 0.4 W) stand-by power absorption
•Thermal protection: internal, with Vout shutdown
•Short circuit protection: hiccup (auto-recovery)
mode
•Input protection: replaceable internal fuse plus
spare (78.36)
•Overvoltage protection: varistor
•Flyback topology
•Compliant to EN 60950-1 and EN 61204-3
•Parallel working for automatic redundancy:
with OR-IN diode
•Dual and series connection permissible
•Small dimensions: 17.5 mm (1 module) or
70 mm (4-modules) wide, 60 mm deep
•35 mm rail (EN 60715) mount
0.63 1.25 1.7
0.50 1 1.5
24 12 24
12 12 36
15 15 40
238
———
< 1 % < 1 % < 1 %
< 200 < 200 < 200
< 10 < 10 < 20
< 90 < 90 < 100
110...240 110...240 110...240
220 220 220
100...265*** 100...265*** 100...265***
140...370 140...370 140...370
28.2 32 57.5
14.2 17.2 43
< 0.4 < 0.4 < 0.4
0.50 0.53 0.74
0.25 0.30 0.6
10 10 12
— — 1 A - T
85 87 86
> 400.000 > 400.000 > 600.000
< 1 < 1 < 1
2,500 (class II) 2,500 (class II) 3,000 (class II)
———
–20...+60 –20...+60 –20...+70
IP 20 IP 20 IP 20
1
•24 V DC, 12 W output •12 V DC, 12 W output
Output specification
Output current (–20...+40°C, 230 V AC input) A
Rated current IN(50°C, full input operating range)A
Rated voltage V
Rated power W
Output power (–20...+40°C, 230 V AC input) W
Peak current capability for 3 ms * A
Output voltage adjust V
Voltage variation (from no-load to full-load)
Voltage ripple @ full load ** mV
Hold-up time@full load: with 100 V AC input ms
with 260 V AC input ms
Input specification
Nominal voltage (UN) V AC (50/60 Hz)
V DC (not polarized)
Operating range V AC (50/60 Hz)
V DC
Max power absorption VA
(@ 100 V AC, 50 Hz) W
Stand-by power absorption W
Power factor
Max current absorption (@ 88 V AC) A
Max. inrush current (peak @ 265 V) for 3 ms A
Replaceable protection fuse
Technical data
Efficiency (@ 230 V AC) %
MTTF H
Start-up delay s
Dielectric strength between input/output V AC
Dielectric strength between input/PE V AC
Ambient temperature range **** °C
Protection category
Approvals (according to type)
Features
78 Series - Switch mode power supplies
Screw terminal
* (see diagrams L78)
** peak to peak, 100 Hz component, with 100 V AC input
*** 88...100 V AC with output current limited to 80 % IN
**** (see derating diagrams P78)
For outline drawing see page 8
XII-2012, www.findernet.com