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Item no. 787-1634/000-070

Switched-mode power supply; Classic; 1-phase; 24 VDC output voltage; 20 A output current; TopBoost; DC OK contact

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Description

Features:
  • Switched-mode power supply
  • Natural convection cooling when horizontally mounted
  • Enclosed for use in switchgear cabinets
  • Contact (DC O K)
  • Suitable for both parallel and series operation
  • Electrically isolated output voltage (SELV) per EN 60950-1/UL 60950-1; PELV per EN 60204
  • Coated PCBs (coating: Bectron PL 1104 or Voltatex 2010), resistant to flowing mixed gas per ISA S71.04:1985, G3 Group A

Product details

Details

Technical Data

Input
Phases 1
Nominal input voltage Ui nom AC 100 … 240 V
Input voltage range AC 85 … 264 V; DC 120 … 372 V
Input voltage derating -1.8 %/V (< 105 VAC)
Nominal mains frequency range 44 … 66 Hz; 0 Hz
Input current Ii ≤ 2.23 A (230 VAC); ≤ 5.56 A (100 VAC)
Discharge current ≤ 1 mA
Inrush current ≤ 30 A
Power factor correction (PFC) Active
Mains failure hold-up time ≥ 20 ms (230 VAC); ≥ 8 ms (100 VAC)
Output
Nominal output voltage Uo nom DC 24 V (SELV)
Output voltage range DC 23 … 28.5 V (adjustable)
Factory preset DC 24 V
Nominal output current Io nom 20 A (24 VDC)
Nominal output power 480 W
Adjustment accuracy ≤ 1 %
Residual ripple ≤ 70 mV (peak-to-peak)
Current limitation 1.1 x Io nom typ.
Overload behavior Constant current
Signaling and communication
Signaling 1 x LED DC OK (green)
1 x DC OK contact (make contact; max. 30 V AC/DC, 1 A)
Operation status indicator LED green (Uo)
Efficiency/Power losses:
Power loss Pl ≤ 7.2 W (230 VAC; no load); ≤ 42.4 W (230 VAC; nominal load)
Max. power loss Pv max. 68.3 W (100 VAC / 24 VDC; 20 A)
Efficiency (typ.) 92 %
Fuse protection:
Internal fuse T 10 A / 250 VAC
External fuse (required) an external DC fuse required for DC input voltage
External fuse (recommended) Circuit breakers 10 A, 16 A, characteristic: B or C
Safety and protection:
Insulation voltage (PRI-SEC) DC 4.242 kV
Isolation voltage (PRI-GND) DC 2.2 kV
Insulation voltage (SEC-GND) DC 0.7 kV
Protection class I
Protection class IP20 (per EN 60529)
Feedback voltage ≤ DC 35 V
Overvoltage category II
Transient protection, primary Varistor
Overvoltage protection, secondary Internal protective circuit
≤ 40 VDC (in case of an error)
Short circuit protection Yes
No-load proof Yes
Parallel operation Yes
Series connection Yes
MTBF > 500,000 h (per IEC 61709)

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