24V DC Modular Rectifier Module — Hot-Swap N+1 Redundant (25A–100A)
HMR-24V-25…100A
The Hannibal HMR-24V is a 24VDC modular rectifier and battery charger that delivers stabilized DC power from 25A up to 100A through high-frequency commutated (IGBT) switch-mode modules.
- Nominal DC output
- 24 VDC (field-adjustable)
- Battery charging
- Temperature-compensated, intelligent BMS
- Communication
- RS485, TCP/IP, SNMP, GSM, dry contacts
- Output current
- 25A to 100A (modular)
- Redundancy
- Hot-swap, N+1 redundant
- Peak efficiency
- > 96%
Overview
The Hannibal HMR-24V is a 24VDC modular rectifier and battery charger that delivers stabilized DC power from 25A up to 100A through high-frequency commutated (IGBT) switch-mode modules. Its compact, fully digital design packs high power density into a 19” rack or cabinet, supplying clean 24V DC to communication and industrial control systems while keeping a stand-by battery charged for a continuous, uninterrupted DC supply.
Built for high reliability and a long design life, the HMR-24V uses hot-swappable rectifier modules in an N+1 redundant configuration, so a single module can be replaced live without interrupting the load — maximising availability and minimising mean time to repair (MTTR). With peak efficiency above 96%, active current sharing within ±5%, temperature-compensated battery charging and built-in intelligent battery management, it is an energy-efficient 24V DC power supply for telecom, instrumentation and process-control loads. A user-friendly front-panel HMI handles all parameters and calibrations, while RS485, TCP, SNMP and GSM communication enable full remote monitoring.
Key features
- 0124VDC modular output, scalable from 25A to 100A by adding high-frequency rectifier modules.
- 02Hot-swappable modules with N+1 redundancy for live replacement and maximum uptime.
- 03High-frequency commutated (IGBT) switch-mode conversion with fully digital control.
- 04Peak efficiency > 96% with active current sharing within ±5% from 20% to 100% load.
- 05Temperature-compensated battery charging and built-in intelligent battery management.
- 0619” rack and cabinet mount configurations with high power density and small footprint.
- 07User-friendly HMI for front-panel setting and calibration of all parameters.
- 08Remote monitoring via RS485, TCP/IP, SNMP, GSM, serial port, Ethernet and dry contacts.
Technical specification
| Nominal DC output | 24 VDC (field-adjustable) |
|---|---|
| Output current | 25A to 100A (modular) |
| Peak efficiency | > 96% |
| Current sharing | ≤ ±5% (20%–100% load) |
| Static voltage regulation | ≤ ±0.6% |
| Battery charging | Temperature-compensated, intelligent BMS |
|---|
| Communication | RS485, TCP/IP, SNMP, GSM, dry contacts |
|---|
| Rectifier technology | High-frequency commutated (IGBT), switch-mode (SMR) |
|---|---|
| Redundancy | Hot-swap, N+1 redundant |
| Mounting | 19” rack / cabinet |
| Cooling | Forced ventilation, front-to-back airflow |
Applications
- Telecom and signalling power systems.
- Industrial control, PLC and instrumentation DC supply.
- Broadband access and access-network equipment.
- Substation and switchgear auxiliary 24V supplies.
- Backup and uninterrupted DC supply for critical 24V loads.
Options, standards & platform
Battery compatibility
HMR Series modular rectifiers provide temperature-compensated charging and intelligent battery management for standby battery banks, with built-in LVD protection and battery test:
- Valve-regulated lead-acid (VRLA), AGM and Gel batteries.
- Vented lead-acid and other lead-acid chemistries.
- Compatible with leading battery brands including EnerSys and Exide.
- Battery low-voltage disconnect (LVD), battery test function and room temperature probe as standard.
Options & accessories
- Voltage drop diode unit and digital or analog voltage / current meters.
- Earth leakage current sensor (positive and negative) and door-open sensor.
- Internal cabinet lighting, anti-condensation heating resistance and redundant fans.
- Fusible surge suppression (AC/DC) and removal of input neutral on site.
- Cabinet colour to any RAL code, flexible cable entry (top / side / bottom / rear).
- Ingress protection up to IP66 for outdoor and harsh-environment installations.
- RS485, TCP, SNMP and GSM communication and an automatic battery test option.
Standards & compliance
- Electrical safety: EN / IEC 62368-1.
- EMC: ETSI EN 300 386 V2.1.1 and EN 61000-6-1 / -2 / -3 / -4.
- AC harmonics, flicker and fluctuations: EN 61000-3-2 / EN 61000-3-3.
- CE marked and RoHS compliant.