Item no. 787-881

capacitive buffer module; 24 VDC input voltage; 24 VDC output voltage; 20 A output current; 0.17 … 16.5 s buffer time; communication capability; 10,00 mm²

Stock item
Features:
  • Capacitive buffer module bridges short duration voltage drops or load fluctuations.
  • For an uninterruptible power supply
  • Internal diode between input and output enables operation with a decoupled output.
  • Buffer modules can be readily parallel-connected to increase buffer time or load current.
  • Potential-free contact for charge condition monitoring

Product details

Details
Technical Data
Input
Nominal input voltage Ui nom DC 24 V
Input voltage range DC 20 … 30 V
Nominal mains frequency range 0 Hz
Input current Ii ≤ 0.06 A (No load); ≤ 1 A (Charging); ≤ 22 A
Output
Nominal output voltage Uo nom DC 24 V
Output voltage range Ui – 1 VDC (rated operation); 20.4 … 24 VDC (buffer mode)
Nominal output current Io nom 20 A
Current limitation 1.1 x Io nom (typ.)
Energy storage system
Buffer time 0.17 … 16.5 s (depends on load current and switch-on threshold)
Switch-on threshold (adjustable) DC 20 … 24 V
Charging time (typ.) 5 min
Signaling and communication
Signaling 1 x LED DC OK (green)
1 x Charge LED (yellow)
1 x DC not OK LED (red)
1 x Isolated relay contact (max. 30 VDC; 1 A)
Operation status indicator Green LED (Uo > 20 V)
Yellow LED (charging)
Red LED (Uo < 20 V)
Efficiency/power losses
Power loss Pl ≤ 1.5 W (No load); ≤ 15 W (Nominal load)
Safety and protection
Isolation voltage (connectors – housing) DC 0.5 kV
Protection class III
Protection type IP20 (per EN 60529)
Reverse voltage protection yes
Resistance to reverse feed ≤ DC 35 V
Parallel operation Yes
Series operation No
MTBF typ. 87,600 h (at 25 °C); typ. 30,500 h (at 40 °C)
Connection data
Connection type (1) Input/Output
Connection technology CAGE CLAMP®
WAGO Connector WAGO 231 Series
Solid conductor 0.5 … 10 mm² / 20 … 8 AWG
Fine-stranded conductor 0.5 … 10 mm² / 20 … 8 AWG
Strip length 13 … 15 mm / 0.51 … 0.59 inch
Connection type 2 Relay
Connection technology 2 CAGE CLAMP®
WAGO Connector 2 WAGO 231 Series
Solid conductor 2 0.08 … 2.5 mm² / 28 … 12 AWG
Fine-stranded conductor 2 0.08 … 2.5 mm² / 28 … 12 AWG
Strip length 2 8 … 9 mm / 0.31 … 0.35 inch
Physical data
Width 57 mm / 2.244 inch
Height 181 mm / 7.126 inch
Depth from upper edge of DIN-rail 179 mm / 7.047 inch
Note (dimensions) Height with connector
Mechanical data
Mounting type DIN-35 rail
Material Data
Weight 1000 g
Environmental Requirements
Surrounding air temperature (operation) -10 … 50 °C
Surrounding air temperature (storage) -10 … 60 °C
Relative humidity 5 … 96 % (no condensation permissible)
Pollution degree 2
Standards and specifications
Conformity marking CE
Standards/Specifications EN 60950; UL 508; EN 61000-6-2; EN 61000-6-3
Commercial data
Product Group 6 (Interface Electronics)
Packaging type BOX
Country of origin DE
GTIN 4045454909826
Customs tariff number 85049019000
Approvals / Certificates
UL-Approvals
Approval
Additional Approval Text
Certificate name
Language
Approval: UL
Underwriters Laboratories Inc.
Additional Approval Text UL 508
Certificate name: E255817
Downloads
Documentation
Bid Text
Instruction Leaflet
CAD/CAE-Data
CAD data
2D/3D Models 787-881
CAE data
EPLAN Data Portal 787-881
WSCAD Universe 787-881
ZUKEN Portal 787-881
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