
Outdoor Step Down 3 Three Phase Oil Type Large Capacity Transformer 200kVA 1000kVA Electrical Voltage Power Distribution Transformer. High-Quality Core Material: Made of imported cold-rolled silicon steel to reduce no-load loss and noise. Oxygen-Free Copper Windings: High and low voltage windings use oxygen-free copper for superior conductivity. Dy n11 Connection Group: Adopts Dy n11 connection to reduce harmonics and improve power supply quality. Fully Sealed Structure: Sealed design extends service life with no lifting center and zero maintenance. Low Noise Performance: Measured noise values are lower than standard requirements. No Core Inspection Needed: Ready for installation and operation immediately after transportation. ISO9001 Certified: Manufactured under strict ISO9000 quality management system standards. Comprehensive Certifications: Holds CCC, UL, CE, IEC, ANSI, KEMA, and GOST certifications.