125V DC Three-Phase Battery Charger for Substation & Switchgear (10A–2500A)
Overview
The Hannibal HR-3P-125V is a three-phase 125VDC battery charger and rectifier from 10A to 2500A, delivering high-reliability DC power and battery charging for substations, switchgear and defence-sector installations. It keeps the protection, control and signalling circuits of electrical substations energised and, with a stand-by battery, provides uninterrupted power backup for SCADA, switchgear and critical control loads.
Built on 6-pulse (B6C) and 12-pulse (B12C) thyristor-controlled topologies with fast DSP control, the HR-3P-125V achieves low input harmonics, voltage regulation under 1% and output ripple under 1% through a galvanic isolation transformer and ripple suppression. Programmable operation parameters, calibration functions for voltage and current, input power measurement (OPS-09) and over-temperature protection give engineers precise control and dependable operation. An LCD display with keypad and automatic startup / restart after fault keep maintenance and service simple across long deployment lifetimes.
Key features
- Three-phase 125VDC output, 10A to 2500A, for substation, switchgear and defence DC systems.
- 6-pulse (B6C) and 12-pulse (B12C) thyristor-controlled topologies with DSP control and low THDi.
- Galvanic isolation transformer, voltage regulation < 1% and output ripple < 1%.
- Programmable operation parameters and calibration functions for voltage and current.
- Input power measurement (OPS-09) and energy monitoring via the front panel.
- Over-temperature, short-circuit protection and current limiting for safe operation.
- LCD display with keypad navigation, alarm logging and automatic startup / restart after fault.
- Float, equalize and boost charge modes with RS232 / RS485 Modbus RTU communication.
Technical specifications
| Input voltage (AC) | 3 x 400V (380 / 415V) |
|---|---|
| Nominal DC output | 125 VDC |
| DC voltage range | 88–160 VDC |
| Output current | 10A to 2500A |
| Rectifier topology | Thyristor-controlled, B6C / B12C (6 & 12-pulse) |
| Charge modes | Float, Equalize, Boost (auto & manual) |
| Voltage regulation | < 1% |
| Output ripple | < 1% RMS |
| Control | Programmable parameters, calibration functions |
| Metering | Input power measurement (OPS-09), energy monitoring |
| Communication | RS232 / RS485, Modbus RTU, Modbus/TCP-IP |
Applications
- Substation and switchgear DC supplies.
- Defence and infrastructure projects.
- Power transmission and distribution.
- Power generation auxiliary systems.
- SCADA and protection & control redundancy.