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Wago 787-881
Features:Capacitive buffer module bridges short duration voltage drops or load fluctuations.For an uninterruptible power supplyInternal diode between input and output enables operation with a decouple…
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Description
Features:Capacitive buffer module bridges short duration voltage drops or load fluctuations.For an uninterruptible power supplyInternal 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
Specification
Technical data - Input
| Nominal input voltage U<sub>i nom</sub> | 24 VDC |
|---|---|
| Input voltage range | 20 … 30 VDC |
| Nominal mains frequency range | 0 Hz |
| Input current I<sub>i</sub> | ≤ 0.06 A (no load); ≤ 1 A (charging); ≤ 22 A |
Technical data - Output
| Nominal output voltage U<sub>o nom</sub> | 24 VDC |
|---|---|
| Output voltage range | Ui – 1 VDC (rated operation); 20.4 … 24 VDC (buffer mode) |
| Nominal output current I<sub>o nom</sub> | 20 A |
| Current limitation | 1.1 x Io nom (typ.) |
Technical data - Energy storage systems
| Buffer time | 0.17 … 16.5 s depends on load current and switch-on threshold |
|---|---|
| Switch-on threshold | DC 20 … 24 V (adjustable) |
| Memory type | Supercaps |
| Charging time (typ.) | 5 min |
Technical data - Signaling and communication
| Signaling | 1 x DC OK LED (green), 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) |
Technical data - Efficiency/power losses
| Power loss P<sub>l</sub> | ≤ 1.5 W; ≤ 15 W (nominal load) |
|---|
Safety and protection
| Isolation voltage (connectors – housing) | 0.5 kVDC |
|---|---|
| Protection class | III |
| Protection type | IP20; per EN 60529 |
| Reverse voltage protection | yes |
| Resistance to reverse feed | ≤ 35 VDC |
| Pollution degree | 2 |
| Parallel operation | Yes |
| Series operation | No |
| MTBF | typ. 87,600 h (at 25 °C); typ. 30,500 h (at 40 °C) |
Connection data - Connection 1
| Connection type | 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 inches |
Connection data - Connection 2
| Connection type | Relay |
|---|---|
| Connection technology | CAGE CLAMP® |
| WAGO connector | WAGO 231 Series |
| Solid conductor | 0.08 … 2.5 mm² / 28 … 12 AWG |
| Fine-stranded conductor | 0.08 … 2.5 mm² / 28 … 12 AWG |
| Strip length | 8 … 9 mm / 0.31 … 0.35 inches |
Physical data
| Width | 57 mm / 2.244 inches |
|---|---|
| Height | 181 mm / 7.126 inches |
| Depth from upper-edge of DIN-rail | 179 mm / 7.047 inches |
| Note (dimensions) | Height with connector |
Mechanical data
| Mounting type | DIN-35 rail |
|---|
Material data
| Fire load | 0.432 MJ |
|---|---|
| Weight | 1000 g |
Environmental requirements
| Ambient temperature (operation) | -10 … +50 °C |
|---|---|
| Ambient temperature (storage) | -10 … +60 °C |
| Relative humidity | 5 … 96 % (no condensation permissible) |
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 ELECTRONIC) |
|---|---|
| PU (SPU) | 1 pcs |
| Packaging type | box |
| Country of origin | DE |
| GTIN | 4045454909826 |
| Customs tariff number | 85049017000 |
Product Classification
| UNSPSC | 39121006 |
|---|---|
| eCl@ss 10.0 | 27-04-07-01 |
| eCl@ss 9.0 | 27-04-07-01 |
| ETIM 9.0 | EC002540 |
| ETIM 10.0 | EC002540 |
| ECCN | NO US CLASSIFICATION |
Environmental Product Compliance
| RoHS Compliance Status | Compliant,No Exemption |
|---|
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