Page 281 - Wagp_InterfaceElectronic_Volume4_2015_US.pdf

787-840

Switched-Mode Power Supply, 3-Phase 5

®
EPSITRON PRO Power 279

Stand-by
L1
DC O.K.
L2 DC+
DC+
DC -
L3 DC -

• Primary switch mode power supply unit with PowerBoost and TopBoost Pack.
• Stand-by input for switching off the output and minimizing power Description Item No. Unit
consumption Switched-Mode Power Supply, 787-840 1
• DC OK contact for output monitoring 24 V DC / 10 A
• Parallel operation, series connection possible 5
• Prepared for class I equipment
• Natural convection cooling when horizontally mounted
• Enclosed for use in switchgear cabinets
• Electrically isolated output voltage (SELV) acc. to EN 60950-1/UL 60950

Technical Data Technical Data

Input: Environmental requirements:
Nominal input voltage Vi nom 3x (2x) 400 ... 500 VAC Ambient operating temperature -25 °C ... +70 °C
Input voltage range 340 ... 550 VAC; 480 ... 780 VDC Storage temperature -25 °C ... +85 °C
Frequency 50 - 60 Hz Rel. humidity 30 % ... 85 % (no condensation)
Input current Ii 3 x 0.6 A at 340 VAC and 10 ADC Derating -3 % / K (> 50 °C)
Discharge current 1mA typ. Degree of pollution 2 (acc. to EN 50178)
Inrush current < 30 A Climatic category 3K3 (acc. to EN 60721)
Mains failure hold-up time 22 ms typ. at 3 x 400 VAC Safety and protection:
Output: Test voltage pri.-sec./ pri.-gr. / sec.-gr. 4.2 kV DC / 2.2 kV DC / 0.7 kV DC
Nominal output voltage Vo nom 24 VDC (SELV) Protection class Prepared for class I equipment
Output voltage range 22.8 ... 28.8 VDC adjustable Degree of protection IP20 acc. to EN 60529
Output current Io 10 A at 24 V DC Overvoltage protection via varistor at primary circuit
PowerBoost 20 ADC (for 4 s); 15 ADC (for 16 s) Short circuit protection yes
TopBoost 70 ADC (for 50 ms) No-load proof yes
Factory preset 24 VDC Feedback voltage max. 35 VDC
Adjustment accuracy 1% Parallel operation yes
Residual ripple < 70 mV (peak-to-peak) Series connection yes
Current limitation 1.1 x Io typ. Connection and type of mounting:
Overload behavior Constant current Wire connection Input/Output: WAGO 231 Series
Operational indication LED green (DC O.K.), LED red (error) Cross sections Input/Output:
Efficiency / power losses: 0.08 ... 2.5 mm² / AWG 28 ... 12
Efficiency 91.7 % typ. Strip lengths Input/Output: 8 ... 9 mm / 0.33 in
7.9 W (stand-by) / 19.9 W (rated load) Type of mounting DIN-rail mounting (EN 60715) in
Power loss P V
Fuse protection: 2 positions
Internal fuse 3 x T 1.6 A / 250 V Dimensions and weight:
External fuse 3 x circuit breakers 6 A, 10 A, 16 A, Dimensions (mm) W x H x L 57 x 163 x 179
characteristic: B or C; Height from upper-edge of DIN 35 rail
or motor circuit breakers, Weight 1000 g
setpoint: 1.6 A, setting range: 1.6 ... 2.5 A Standards and approvals:
An external DC fuse is required for the DC Standards/Specifications EN 60950, EN 61204-3,
input voltage UL 60950, UL 508