12, 18 & 24 Pulse Rectifier Transformers
Multi-pulse rectifier transformers engineered for high-current DC conversion — 12, 18, and 24 pulse configurations that minimise harmonic distortion and maximise process efficiency for electrochemical, smelting, and heavy industrial applications.
Engineering Features
Multi-Pulse Phase-Shifting Windings
12, 18, or 24-pulse phase-shifting secondaries cancel low-order harmonics at the source — eliminates need for downstream filters.
Technical Data
| Parameter | Range / Value |
|---|---|
| Rated Power | 1 – 80 MVA |
| Primary Voltage | Up to 36 kV |
| Secondary Voltage | Project-specific (typ. 200–1500 V DC) |
| Frequency | 50 / 60 Hz |
| Pulse Configuration | 12 / 18 / 24 pulse |
| Winding Geometry | Extended Delta / Polygon |
| K-Factor Rating | K-13 to K-30 |
| Cooling | OFAF / OFWF / ODAF |
| Partial Discharge | ≤ 10 pC at 1.5 × Um |
| Standards | IEC 61378 / IEEE C57.18.10 |
Standard range parameters — custom specifications available on request.
DEWA Approved
Dubai Electricity & Water Authority vendor
ADDC / AADC
Abu Dhabi Distribution Company approved
SEWA / FEWA
Sharjah & Federal Electricity authorities
ADNOC AVL
ADNOC Approved Vendor List
IEC 60076
International standard for power transformers
ARAMCO 17-SAMSS
Saudi ARAMCO material specification
Multi-pulse rectifier transformers for GCC industrial DC — aluminium smelting, electrochemical processing, DC drives and traction. 500 kVA to 50 MVA at up to 132 kV per IEC 60146, with 12-, 18- and 24-pulse configurations for IEC 61000-3-6 harmonic compliance. Standard supplier to EMAL (Emirates Global Aluminium), ALBA (Aluminium Bahrain), SABIC, Ma'aden and GCC petrochemical complexes.
EGA / EMAL Aluminium Smelter · Jebel Ali & Al Taweelah
ALBA Aluminium Smelter · Bahrain
SABIC & Ma'aden Petrochemicals · Saudi Arabia
Etihad Rail & Saudi Land Bridge DC Traction
GCC Electrochemical Process Plants
Saudi Aramco Cathodic-Protection Rectifiers
Where 12, 18 & 24 Pulse Rectifier Transformers Excel.
EGA / EMAL Aluminium Smelters
IEC 60146 rectifier transformers for Emirates Global Aluminium smelters at Jebel Ali and Al Taweelah — high-current cyclic DC service.
ALBA Aluminium Smelter Bahrain
Multi-pulse rectifier transformers for Aluminium Bahrain (ALBA) smelter — engineered for IEC 61000-3-6 harmonic compliance.
Etihad Rail & Saudi Land Bridge DC Traction
Rectifier transformers for Etihad Rail and Saudi Land Bridge DC traction substations — 12/18-pulse low-harmonic configurations.
Saudi Aramco Cathodic-Protection
Rectifier transformers supplying Saudi Aramco pipeline cathodic-protection rectifier units across upstream and midstream networks.
Frequently Asked Questions
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