Datasheet

787-742
Switched-Mode Power Supply, 3-Phase
EPSITRON
®
ECO Power
L1
L2
L3
DC+
DC+
DC -
DC -
DC -
DC O.K.
• Suitable for protection class I equipment
• Natural convection cooling when horizontally mounted
• Enclosed for use in switchgear cabinets
• Fast and tool-free termination via lever-actuated terminal blocks
• DC O.K. contact
• Parallel operation
• Electrically isolated output voltage (SELV) acc. to
EN 60950-1/UL 60950-1
Description
Item No.
Pack.
Unit
Switched-mode power supply,
24 VDC / 20 A
787-742 1
Technical Data
Input:
Nominal input voltage V
i nom
3 x (2 x) 400 V … 500 VAC
Input voltage range 325 V … 575 VAC; 460 V … 800 VDC
Frequency 47 Hz … 63 Hz
Input current I
i
3 x 2.05 A at 400 VAC and 20 ADC
Power factor ≥ 0.6
Discharge current < 3.5 mA
Inrush current < 30 A
Mains failure hold-up time > 17 ms at 3x 400 VAC
Output:
Nominal output voltage V
o nom
24 VDC (SELV)
Output voltage range 22 ... 28 VDC adjustable
Output current I
o
20 A at 24 VDC
Factory preset 24 VDC
Adjustment accuracy 1 %
Residual ripple < 80 mV (peak-to-peak)
Overload behavior Constant power
(in overload range: 1.15 ... 1.4 x I
o
);
shutdown and automatic restart in the event
of a short circuit
Operational indication Green LED (V
o
), Red LED (overload)
Signaling DC O.K. contact; Make contact
(max. 31.2 V / 20 mA)
Efficiency/Power losses:
Efficiency 90 % typ.
Power loss P
V
50 W
Max. power loss P
V
55 W
Fuse protection:
Internal fuse 3 x T 5 A / 250 V
External fuse 3 x circuit breakers 10 A, 16 A,
B or C characteristic,
or motor circuit breakers
External DC fuse required for DC input
voltage
Environmental Requirements:
Ambient operating temperature -25 °C … +70 °C
Storage temperature -40 °C … +85 °C
Rel. humidity 95% (no condensation permissible)
Technical Data
Environmental Requirements:
Derating -2 % / K (> +50 °C; 400 VAC)
Degree of pollution 2 (acc. to EN 50178)
Climatic category 3K3 (acc. to EN 60721)
Safety and protection:
Test voltage PRI-SEC/PRI-GND/
SEC-GND/SEC-DC OK
3 kV AC / 1.5 kV AC /
0.5 kV AC / 0.5 kV AC
Protection class Prepared for class I equipment
Degree of protection IP20 (acc. to EN 60529)
Overvoltage protection yes
Short circuit protection yes
No-load proof yes
Feedback voltage 30 V
Parallel operation yes
Series connection yes
MTBF > 250000 h
Connection and type of mounting:
Wire connection Input/Output: WAGO 2706 Series
Signaling: WAGO 2091 Series
Cross sections Input/Output:
0.5 mm² … 6 mm² / AWG 20 … 10
Signaling:
0.2 mm² … 1.5 mm² / AWG 24 … 14
Strip lengths Input/Output:
11 … 12 mm / 0.43 … 0.47 in
Signaling: 8 … 9 mm / 0.31 … 0.35 in
Type of mounting DIN-rail mount (EN 60715)
Dimensions and weight:
Dimensions (mm) W x H x L 110 x 130 x 151
Length from upper-edge of DIN 35 rail
Weight 1930 g
Standards and approvals:
Standards/Specifications EN 60950, EN 61204-3,
UL 60950*, UL 508*
(* pending)
WAGO Kontakttechnik GmbH & Co. KG
Subject to design changes
14.01.2015
Postfach 2880 - D-32385 Minden
Hansastr. 27 - D-32423 Minden
Tel.: [phone] E-Mail: [e-mail]
Fax: [phone] www.wago.com