Datasheet

787-1014/072-000
DC/DC Converter
EPSITRON
®
COMPACT Power
Similiar to pictured device
IN+
DC+
DC+
DC -
DC -
IN-
• Primary switch mode power supply unit
• Natural convection cooling when horizontally mounted
• Stepped profile, ideal for distribution boards or distribution boxes
• Suitable for both parallel and series operation
• Electrically isolated output voltage (SELV) per EN 60950-1/UL 60950-1
• Adjustment accuracy: ± 1 % (± 10 % subject to the application range of
EN 50121-3-2)
Description
Item No.
Pack.
Unit
DC/DC Converter,
72 VDC / 24 VDC; 2.0 A
787-1014/072-000 1
Technical Data
Input:
Nominal input voltage V
i nom
72 VDC
Input voltage range 40 … 90 VDC
Frequency 0 Hz
Input current I
i
0.79 A at 72 VDC
Inrush current < 30 A, NTC
Mains failure hold-up time > 8 ms at 72 V DC
Output:
Nominal output voltage V
o nom
24 VDC, SELV
Factory preset 24 VDC
Output current I
o
2.0 A at 24 VDC
max. 1.6 A in any mounting position
Residual ripple < 100 mV (peak-to-peak) up to 20 MHz
Current limitation 1.1 x I
a
typ.
Overload behavior Constant current
Operational indication Green LED (V
o
)
Efficiency/Power losses:
Efficiency 84 % typ.
Power loss P
V
2.0 W (72 VDC/no load),
9.0 W (72 VDC/nominal load)
Max. power loss P
V
10,5 W typ. (40 VDC/24 VDC, 2 A)
Fuse protection:
Internal fuse 4 AT (125 V DC)
External fuse 6 A, 10 A power circuit breakers,
B, C characteristics
Environmental requirements:
Ambient operating temperature -40°C … +70°C
Storage temperature -40 °C … +85 °C
Relative humidity 5 % … 96 % (coated PCB)
Derating -1.5 %/K (> 55 °C)
Degree of pollution 2 (per EN 50178)
Climatic category 3K3 (per EN 60721)
Shock and vibration Category 1, class B
(per EN 61373:2010)
Technical Data
Safety and protection:
Enclosure Plastic, light gray,
Flammability class V0 per UL94
Test voltage PRI–SEC 4.2 kV DC
Protection class II
Degree of protection IP20 per EN 60529
Overvoltage category II
Overvoltage protection Varistor (input side); internal protective
circuit, < 40 VDC (output side in case of
an error)
Short circuit protection Yes
No-load proof Yes
Feedback voltage Max. 35 VDC
Parallel operation Yes
Series connection Yes
MTBF > 500000 h
Fire load 7 MJ
Connection and mounting type:
Wire connection Input/Output: WAGO 740 Series
Cross sections Input/Output:
0.08 … 2.5 mm²/28 … 12 AWG
Strip lengths Input/Output:
6 … 7 mm/0.24 … 0.28 in.
Mounting type DIN-rail-mount (EN 60715)
Dimensions and weight:
Dimensions (mm) W x H x L 72 x 89 x 59
Length: 55 mm, from upper-edge of DIN-
Weight 250 g
Standards and specifications:
Standards/specifications EN 60950, EN 61204-3, EN 50121-3-2,
EN 50125*, UL 60950*, UL 508*, GL*
(*pending)
WAGO Kontakttechnik GmbH & Co. KG
Subject to design changes
24.02.2016
Postfach 2880 - D-32385 Minden
Hansastr. 27 - D-32423 Minden
Tel.: [phone] E-Mail: [e-mail]
Fax: [phone] www.wago.com