Detailed Product Introduction
Ⅰ. Basic Information
Product Name：On-Load Tap-Changing Power Transformer
Standard Code：GB/T1094.1-2013 (Complies with the national standard for power transformers)
Product Code：******
Manufacturing Information：Manufactured by Jinshanmen Technology Co., Ltd. Factory Serial Number:******, Date of Manufacture: March 2025.
Ⅱ. Core Technical Parameters
Rated Capacity：500 kVA
Rated Voltage：High-voltage side: 10,000V (regulation range of ±4×2.5%), Low-voltage side: 10,000V
Rated Frequency：50 Hz
Number of Phases：3 phases
Connection Group Marking：Dyn11 (High-voltage side in delta connection, low-voltage side in star connection, phase difference of 30°)
Impedance Voltage：4.21% (reflects the load loss and short-circuit impedance characteristics of the transformer)
Ⅲ. Operation and Structural Parameters
Cooling Method：ONAN (Oil-immersed self-cooling, natural oil circulation and natural air cooling)
Application Condition：Outdoor type (suitable for installation and operation in outdoor environments)
Weight Parameters：
Body Hoisting Weight: 970 kg
Oil Weight: 435 kg
Total Weight: 1,750 kg
Transportation Weight: 1,750 kg
Insulation Level：
High-voltage side: LI 75 (Lightning impulse withstand voltage 75kV), AC 35 (Power frequency withstand voltage 35kV)
Low-voltage side: LI 75, AC 35
Ⅳ. Tap-Changing Characteristics
On-Load Tap-Changer Positions：Covers 9 tap positions. The voltage regulation range of the high-voltage side is from 9,000V to 11,000V (e.g., position 1 corresponds to 11,000V, position 9 corresponds to 9,000V). The low-voltage side is fixed at 10,000V, adapting to different grid voltage requirements.
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