Single-Phase B Terminal DC Attenuation Demagnetizer 5A for 330kV High-Capacity Power Transformer|XHXC105

The XHXC105 Single-Phase Transformer Demagnetizer is engineered specifically for eliminating residual magnetism in high-capacity power transformers (35kV and above, especially 330kV+ units). Residual magnetism—caused by ferromagnetic hysteresis during DC resistance testing and voltage ratio measurements—is a critical pre-commissioning concern: energizing a magnetized transformer can cause half-cycle saturation, generate massive harmonic inrush currents, trigger protective relay misoperation, and in severe cases precipitate cascading substation blackouts.

The XHXC105 addresses this with a patented DC attenuation frequency conversion technology incorporating three synergistic principles: (1) periodically reversing DC current polarity, (2) progressively decreasing current amplitude through 5A → 1A → 200mA → 5mA stages, and (3) systematically shrinking magnetic hysteresis loops via alternating pole cancellation. A single B-phase connection is sufficient to demagnetize all three phases—a unique field advantage—achieving over 90% efficiency in a single pass compared to 80% with conventional methods. The 5kg portable design, 16-bit AD data acquisition, and intuitive dual-button operation make it the ideal tool for substation commissioning and transformer manufacturing quality control.

• Patented 3-Principle DC Attenuation: Reversing polarity + decreasing current amplitude + shrinking hysteresis loops for superior demagnetization
• Single B-Phase Connection: Connect only to the B-phase terminal and neutral—demagnetization effect propagates across all three phases
• 5A Multi-Current Sequencing: Automatic progression through 5A, 1A, 200mA, and 5mA stages with intelligent current selection
• 90%+ Single-Pass Efficiency: Achieves over 90% residual magnetism elimination in one cycle vs. 80% with conventional approaches
• Rapid Under-4-Minute Cycles: Automatic mode completes full demagnetization in under 4 minutes—down from 30 minutes traditionally
• Dual-Mode Operation: Automatic intelligent sequencing for routine use; manual mode with selectable current levels for targeted treatment
• 16-Bit AD Precision: High-resolution data acquisition with automatic current stabilization for consistent measurement accuracy
• Real-Time Progress Display: Backlit LCD with Chinese/English support shows 0-100% progress and operating status
• Compatible with Standard Test Leads: Directly connects to existing DC resistance test current leads for seamless workflow integration
• Ultra-Portable 5kg Design: Compact and lightweight for easy single-person transport between substation sites and manufacturing bays