110–125V DC Rectifier Module — Hot-Swap N+1 for Substation & Switchgear (25A–100A)
Overview
The Hannibal HMR-110V is a 110–125VDC modular rectifier and battery charger that supplies high-reliability DC power to substations and switchgear from 25A to 100A. Using high-frequency commutated (IGBT) switch-mode modules in a hot-swap N+1 redundant configuration, it energises the protection relays, SCADA, control and tripping circuits of electrical substations while a stand-by battery guarantees power backup for substations during a total AC outage.
The modular design delivers high power density and a long design life, and hot-swappable modules keep mean time to repair extremely low — a faulty module is replaced live without disturbing the 110V DC bus. Built-in intelligent battery management with temperature-compensated charging, a battery low-voltage disconnect (LVD), output breakers for loads and an earth leakage current sensor protect both the battery and the distribution network. A front-panel HMI, a time-stamped alarm & event logger and RS485 / TCP / SNMP / GSM communication provide complete supervision for utility-grade reliability.
Key features
- 110–125VDC modular output, scalable from 25A to 100A for substation and switchgear DC.
- Powers protection relays, SCADA, control and tripping circuits with continuous DC supply.
- High-frequency commutated (IGBT) switch-mode modules with hot-swap N+1 redundancy.
- Battery low-voltage disconnect (LVD) and output breakers for loads as standard.
- Earth leakage current sensor (positive and negative) for DC network safety.
- Temperature-compensated charging and built-in intelligent battery management.
- Peak efficiency > 96% with active current sharing for redundant operation.
- Front-panel HMI plus RS485, TCP/IP, SNMP, GSM and dry-contact monitoring.
Technical specifications
| Rectifier technology | High-frequency commutated (IGBT), switch-mode (SMR) |
|---|---|
| Nominal DC output | 110–125 VDC (field-adjustable) |
| Output current | 25A to 100A (modular) |
| Redundancy | Hot-swap, N+1 redundant |
| Peak efficiency | > 96% |
| Battery protection | LVD (low-voltage disconnect), output breakers |
| Monitoring | Earth leakage current sensor (+/–) |
| Battery charging | Temperature-compensated, intelligent BMS |
| Mounting | 19” rack / cabinet |
| Cooling | Forced ventilation, front-to-back airflow |
| Communication | RS485, TCP/IP, SNMP, GSM, dry contacts |
Applications
- Electrical substations and switchgear DC systems.
- Protection & control and SCADA power supplies.
- Power transmission and distribution networks.
- Utility and grid-automation auxiliary supplies.
- Backup DC supply for critical 110V substation loads.