Page 279 - Wagp_InterfaceElectronic_Volume4_2015_US.pdf

787-833

Switched-Mode Power Supply, 1-Phase 5

®
EPSITRON PRO Power 277

Stand-by
DC O.K.
L
DC+
N DC+
DC -
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, 787-833 1
• DC OK contact for output monitoring 48 V DC / 5 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 110 ... 240 VAC Ambient operating temperature -25 °C ... +70 °C
Input voltage range 85 ... 264 VAC; 120 ... 350 VDC Storage temperature -25 °C ... +85 °C
Input voltage derating -1.5 % / V AC < 110 VAC Rel. humidity 30 % ... 85 % (no condensation)
Frequency 50 Hz ... 60 Hz Derating -3 % / K (> +50 °C)
Input current Ii 1.2 A at 230 VAC and 5 ADC Degree of pollution 2 (acc. to EN 50178)
Discharge current 1 mA typ. Climatic category 3K3 (acc. to EN 60721)
Inrush current < 8 A (active inrush current limitation) Safety and protection:
Mains failure hold-up time 20 ms typ. at 230 VAC Test voltage pri.-sec./ pri.-gr. / sec.-gr. 4.2 kV DC / 2.2 kV DC / 0.7 kV DC
Output: Protection class Prepared for class I equipment
Nominal output voltage Vo nom 48 VDC (SELV) Degree of protection IP20 (acc. to EN 60529)
Output voltage range 33 ... 52 VDC adjustable Overvoltage protection via varistor at primary circuit
Output current Io 5 A at 48 V DC Short circuit protection yes
PowerBoost 10 ADC (for 4 s); 7.5 ADC (for 8 s) No-load proof yes
TopBoost 30 ADC (for 25 ms) Feedback voltage max. 63 VDC
Factory preset 48 VDC Parallel operation yes
Adjustment accuracy 1% Series connection yes
Residual ripple < 70 mV (peak-peak) Connection and type of mounting:
Current limitation 1.1 x Io typ. Wire connection Input/Output: WAGO 231 Series
Overload behavior TopBoost / PowerBoost /Constant current Signalising: WAGO 733 Series
Operational indication LED green (DC O.K.), LED red (error) Cross sections Input/Output:
Signaling Relay contact DC O.K. (changeover 0.08 mm² ... 2.5 mm² / AWG 28 ... 12
contact) Signalising:
Efficiency / power losses: 0.08 mm² ... 0.5 mm² / AWG 28 ... 20
Efficiency 91 % typ. Strip lengths Input/Output: 8 ... 9 mm / 0.33 in
0.8 W (stand-by) / 7.4 W (no load) / Signalising: 5 ... 6 mm / 0.22 in
Power loss P V
21.6 W (rated load) Type of mounting DIN-rail mounting (EN 60715) in
Fuse protection: 2 positions
Internal fuse T 6.3 A / 250 V Dimensions and weight:
External fuse Circuit breakers 6 A, 10 A, 16 A, Dimensions (mm) W x H x L 57 x 163 x 179
characteristic: B or C (incl. female connector)
An external DC fuse is required for the DC Length from upper-edge of DIN 35 rail
input voltage Weight 1475 g
Standards and approvals:
Standards/Specifications EN 60950, EN 61204-3,
UL 60950, UL 508