Schaefer B1592-28 | 27.6Vdc | 600W | AC/DC Battery Charger | Eurocassette / 19" Rack Mount
The Schaefer B1592-28 is a 27.6 Vdc, hot-swappable Eurocassette battery charger module designed for railway signalling and level crossing applications. Approved for deployment across the Queensland Rail network, it operates within the R1712 6U, 19-inch subrack (supplied separately), which is pre-wired to house up to two modules for increased ca...
Read MoreThe Schaefer B1592-28 is a 27.6 Vdc, hot-swappable Eurocassette battery charger module designed for railway signalling and level crossing applications.
Approved for deployment across the Queensland Rail network, it operates within the R1712 6U, 19-inch subrack (supplied separately), which is pre-wired to house up to two modules for increased capacity or redundancy.
As a plug-in module, the B1592-28 allows quick field replacement without disturbing fixed wiring, improving serviceability in trackside environments. The subrack incorporates the system decoupling diodes, reducing thermal stress on the charger module and enhancing long-term reliability.
Built for harsh Australian rail conditions, the B1592-28 features conformal-coated electronics, enhanced mechanical strength, and natural convection cooling for dependable performance in high-temperature equipment rooms. With comprehensive protection features and relay outputs for remote system monitoring, the B1592-28 provides a proven, maintainable power solution for critical signalling infrastructure.
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Features
- Queensland Rail Type Approval C0192 - validated for signalling and level crossing applications.
- Natural convection cooling – no fans, reducing potential failure points and increasing long-term reliability.
- High-temperature operation up to 75°C for stable performance in signalling and equipment huts.
- Conformal-coated electronics and reinforced chassis resist humidity, vibration, and contamination common within the rail corridor.
- Supports parallel and redundant operation with active current sharing for load balancing and system redundancy
- Eurocassette plug-in design for hot-swappable replacement in the R1712 subrack (supplied separately).
- High transient protection, reverse polarity protection, and monitoring via Charger Fail and DC OK relay outputs.
Specifications
| INPUT | |
|---|---|
| Voltage Range | 115V AC ±20% or 230V AC +15%/-20%, unit switches off at under- and overvoltage |
| Frequency | 50/60Hz |
| Recommended Input Fuse / MCB | External, 16A time lag / K-characteristic related to MCB`s manufactured by ABB |
| No-load Input Power | Approx. 6W |
| Switch-on Time | 300ms typical |
| Inrush Current | Limiting by thermistor |
| OUTPUT | |
|---|---|
| Voltage | 27.6V DC (adjustable 24 … 32V DC) |
| Current | 18A |
| Recommended Output Fuse | External, 25A time lag / B-characteristic related tp fuses manufactured by ABB |
| Line Regulation (±10%) | 0.1 % |
| Load Regulation (10-90%) | < 2% |
| Efficiency at Full Load | Approx. 85% |
| Switching Frequency | Approx. 33 kHz |
| Ripple | ≤ 1% +30mVp-p |
| Load Transient (10-90-10%) | 6 % typical |
| Response Time to ±1 % | 2ms typical |
| Turn-on Rise Time | Softstart, 300ms typical |
| Overload Protection | Current limited to 70 ... 110 % of full load |
| Overvoltage Protection | OVP switches off the module at Uout = 35V (with automatic return to operation) |
| Remote Sensing | Sense lines have to be connected to the output or to the load under regard of polarity |
| Redundant Operation | Via externally installed decoupling diode in R1712 subrack |
| Parallel Operation | Includes Current Sharing with Interrupt in case of faulty unit in parallel operation |
| Reverse Polarity Protection | Via anti-parallel diode in the output (output fuse required) installed externally in R1712 subrack |
| Transient and Surge Protection | Varistor on Input and Output to meet 2kV transient/surge in accordance with EN61000-4-4 / EN61000-4-5 |
| MECHANICAL | |
|---|---|
| Mounting Type | Eurocassette via 19" Subrack (R1712). R1712 is pre-configured for 2 x B1592-28 Battery Charger Modules for use in parallel / redundant operation |
| Dimensions |
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| Weight |
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| Increased Mechanical Strength | For shock and vibration in accordance with EN61373 |
| Protection Category | Acc. to IP20 |
| Mounting Instructions | Only in provided position (cooling fin vertical). Above and below the unit at least 40mm distance to neighbouring parts. |
| ENVIRONMENTAL | |
|---|---|
| Cooling | Natural Convection |
| Humidity | Up to 99% RH, non-condensing due to additional Tropical Protection (Conformal Coating) applied to all PCBs |
| Temperature Coefficient | 0.02 %/°C typical |
| Operating Temperature | -20°C to +75°C |
| Internal Temperature | Switch 90°C heatsink temperature for emergency power off |
| Load Derating | 2.5 %/°C from +55°C |
| Storage Temperature | -40°C to +85°C |
| ALARMS / MONITORING | |
|---|---|
| Charger Failure | Indicating with relay |
| DC-OK with Relay (output voltage monitoring) | Switching threshold: UOUT>21.6VDC |
| RELIABILITY | |
|---|---|
| MTBF | Approx. 100.000 h at 40°C (in acc. to MIL-HDBK-217E Notice 1) |
| SAFETY & STANDARDS | |
|---|---|
| Safety / Construction | Acc. to to EN/IEC 61010-2-201 + EN/IEC 61010-1 |
| Earth Leakage | < 3.5mA, acc. to EN/IEC 61010-2-201 + EN/IEC 61010-1 |
| EMC Compatibility | Acc. to EN 61000-6-2 / EN 61000-6-4 / EN61000-4-4 / EN61000-4-5 |
| Safety Class | 1 (equipment with protective earth connection) |
| Overvoltage Category | II |
| Pollution Degree | 2 |
| Maximum Installation Altitude | 2000m |
| Isolation Resistance | > 10 MΩ at 500V DC |
| Isolation Test | Acc. to EN/IEC 61010-2-201 + EN/IEC 61010-1 |
Technical Drawings
Warranty & Returns
Warranty periods vary by product. Please refer to the Powerbox Warranty Policy for the applicable coverage period against manufacturing defects from date of purchase. For returns and RMA requests, please visit our RMA support page or contact our support team directly.