400 HZ ISOLATION TRANSFORMER 300 KVA, 10055L2

The L/C Magnetics 300 kVA, 400 Hz Isolation Transformer is designed to provide reliable galvanic isolation and stable power distribution for high-frequency electrical systems. Engineered with copper windings and a Class H insulation system, this transformer delivers high efficiency, low losses, and long service life in demanding industrial, aerospace, and military applications.

Electrical Ratings & Performance

• Rated Power: 300 kVA
• Phase: Three Phase
• Frequency: 400 Hz
• Primary Voltage: 200 VAC L-L, 115 VAC L-N, Wye
• Secondary Voltage: 200 VAC L-L, 115 VAC L-N, Wye
• Rated Current: 866 Amps
• Efficiency: ≥ 98% at full load
• Voltage Regulation: ≤ 3% at full load
• Typical Impedance: 5–6% (application dependent)

Construction Features

• High-quality copper windings for superior electrical and thermal performance
• Grain-oriented silicon steel core optimized for 400 Hz operation
• Class H insulation system for increased thermal margin and extended service life
• Precision coil and core assembly to minimize losses and leakage reactance
• Rigid mechanical bracing designed to withstand electrical and mechanical stresses

Cooling System

• AN/AF cooling (Air Natural / Air Forced)
• Designed to operate at rated load under normal ambient conditions
• Forced-air cooling available for enhanced thermal performance when required

Safety & Isolation

• Full electrical isolation between primary and secondary windings
• Grounded neutral provisions for safe system integration
• Designed to withstand inrush currents and short-circuit conditions of 400 Hz systems
• Optional thermal monitoring devices available upon request

Mechanical Characteristics

• Indoor Enclosure: NEMA 1
• Approximate Dimensions: 52” W × 30” D × 63” H (or TBD)
• Approximate Weight: 2500 lbs (or TBD)
• Durable industrial finish suitable for indoor environments

Standards & Quality

• Designed and manufactured in accordance with applicable IEEE C57 standards
• Construction aligned with NEMA guidelines
• RoHS-compliant materials available upon request

Typical Applications

• Aerospace ground power equipment
• Military and defense power systems
• Aircraft maintenance and test facilities
• High-frequency industrial power distribution
• Laboratory and research installations

The diagram of the transformer is shown below:

The photo of the indoor enclosure (52” W x 30” D x 63” H) is shown below:

Custom Engineering Available

L/C Magnetics specializes in custom transformer solutions. Voltage configurations, impedance levels, shielding options, and monitoring accessories can be tailored to meet specific application requirements.

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