24 PULSE OIL-FILLED TRANSFORMER, 3 PH, 60 HZ,

4160 DELTA TO 480 DELTA ARE 4 EXTENDED SECONDARIES

L/C Magnetics manufactures the P/N 10210L, a high-performance 520 KVA, three-phase, 24-pulse transformer engineered for demanding industrial rectifier and drive applications. Its four 480 VAC extended-delta secondaries provide precise ±7.5° and ±22.5° phase shifts to reduce harmonics, improve power quality, and support reliable high-power operation. Built with a 4160 VAC primary, multiple voltage taps, and a rugged compartmentalized design, this custom transformer delivers dependable performance for critical systems.

Specifications:

• 24 Pulse Transformer, P/N 10210L
• Primary 4160 VAC L-L
• Extended delta secondaries 4 sets: Set 1, Set 2, Set 3, Set 4, 480 VAC L-L, 130 KVA each.
• Secondary phase shift +/- 7.5 degrees and +/- 22.5 degrees
• Main and Teaser are joined as Main A to Teaser B, Main B to Teaser C, Main C to Teaser A, with additive or subtractive polarity to get +/- 7.5 degrees or +/- 22.5 degrees phase shift.
• High voltage input is H1, H2, H3, delta in the high voltage compartment
• Low voltage output is (1,2,3), (4,5,6), (7,8,9), (10,11,12) as extended delta secondaries.
• Total weight is 8000 lbs. or TBD
• Dimensions are 8’ x 8’ x 8’ or TBD

The photo of the transformer in the oil-filled enclosure is shown below:

The schematic diagram of the 24-pulse transformer is shown below:

To discuss your specific application, please call our number at (714) 624-4740, or send us an email at quote@lcmagnetics.com.