Representative imageCustomised AC to DC Rectifiers up to 7500 Amperes
A high-current, application-engineered AC-to-DC rectifier system delivering regulated DC at outputs up to 7500 A.
Overview
A high-current, application-engineered AC-to-DC rectifier system delivering regulated DC at outputs up to 7500 A. These are typically thyristor (SCR) phase-controlled rectifiers built as a matched transformer-rectifier set with an integral converter-grade/isolation transformer, multi-pulse bridge, interphase transformer and heavy DC busbar, sized for continuous high-amperage low-voltage process duty such as electroplating, anodizing, electrowinning/refining and chlor-alkali electrolysis. To handle the high currents and meet power-quality limits, ACE configures 6-pulse or 12-pulse (and higher) bridges with harmonic filtering, and offers air-cooled or water-cooled designs for the corrosive, high-dissipation environments these processes demand. Buyers choose ACE for a fully customised rating (voltage, current, cooling, control) rather than a fixed catalogue unit, with closed-loop constant-current/constant-voltage regulation for the electrochemical load.
Specifications
| Output DC current | up to 7500 A; custom ratings to suit process |
|---|---|
| Output DC voltage | low-voltage high-current, typ. 6 V to ~150 V DC depending on process |
| Input | 3-phase, 415 V / 433 V LT or HT class via dedicated rectifier transformer, 50/60 Hz |
| Topology | thyristor/SCR phase-controlled bridge; 6-pulse, 12-pulse or higher with interphase transformer |
| Control | closed-loop constant-current (CC) and constant-voltage (CV) regulation; digital firing control |
| Cooling | forced-air or water-cooled (oil-cooled option) for high dissipation / corrosive ambient |
| Power factor / harmonics | 12-pulse and filtering to improve PF and limit THD (IEEE-519) |
| Construction | integral converter-grade transformer + rectifier set, heavy DC busbar |
| Metering/protection | DC current/voltage metering, over-current, over-temperature, fault alarms |
| Standards | IS / IEC 60146; IEEE-519 (harmonics) |
Applications
- Electroplating and surface finishing
- Anodizing lines
- Electrowinning / electro-refining of metals (copper, zinc, etc.)
- Chlor-alkali and other electrolysis processes
- Large electromagnets and high-current DC process loads
Frequently asked questions
Do you build custom rectifiers to specification?
What quality standard does ACE Electromagnetics work to?
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Request a quote — Customised AC to DC Rectifiers up to 7500 Amperes
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- Output voltage & current (DC) or output frequency
- Rated power / current
- Pulse count, ripple or regulation needs
- Cooling & enclosure
- Application / end-use
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