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Industrial Grade DC Demagnetizing Unit for Direct Current Line Integration

Name: Industrial Grade DC Demagnetizing Unit for Direct Current Line Integration
Brand: Xi'an Xu&Hui Electromechanical Technology Co., Ltd.
SKU: Se aplicará la siguiente regla:
Price: 4,115.00 USD
Availability: InStock

Detalles del producto:

Lugar de origen:	Xi'an Shaanxi China
Nombre de la marca:	XZH TEST
Certificación:	ISO CE
Número de modelo:	Se aplicará la siguiente regla:

Información detallada

Lugar de origen:

Xi'an Shaanxi China

Nombre de la marca:

XZH TEST

Certificación:

ISO CE

Número de modelo:

Se aplicará la siguiente regla:

Resaltar:

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Trading Information

Cantidad de orden mínima:

1 juego

Detalles de empaquetado:

embalaje de madera

Tiempo de entrega:

5-8 DÍAS LABORALES

Condiciones de pago:

T/T

Capacidad de la fuente:

3000 unidad/año

Descripción de producto

XHXC110 Demagnetizer for Power Transformers & CTs

The XHXC110 is a specialized tool for eliminating residual magnetism in large power transformers and current transformers post DC resistance testing. It is essential for shielding these assets from inrush current damage and enabling safe, reliable commissioning.

Ferromagnetic materials exhibit hysteresis, so residual magnetism lingers in transformer iron cores after tests like turns ratio and DC resistance measurements. When the transformer operates, this residual magnetism saturates half the iron core cycle, creating heavy harmonics in excitation current. This boosts reactive power use and risks relay protector misfires—leading to costly downtime. Demagnetization before commissioning is thus mandatory for stable transformer performance.

Upgraded from our original series, the XHXC110 offers automatic demagnetization (no repetitive 操作 for users), a larger LCD screen for enhanced data visibility, and intuitive two-button control: red for select/reset, green for confirm/start. Demagnetization time is cut from 30 minutes to under 4 minutes for faster workflows.

Industrial Grade DC Demagnetizing Unit for Direct Current Line Integration 0

Performance Characteristics:

Utilizes patented technology – DC frequency conversion attenuation principle;
Three-phase transformers achieve demagnetization by demagnetizing only phase B;
Features automatic current stabilization judgment and 16-bit AD data acquisition and processing;
Offers manual/automatic demagnetization modes;
Fast demagnetization speed – reduced from 30 minutes to no more than 4 minutes per cycle;
Significant demagnetization effect – increased from 80% to over 90% per cycle; Can directly utilize the current line of DC resistance testing, facilitating integration with DC resistance testing;
Suitable for eliminating residual magnetism in large power transformers and instrument transformers of 35kV and above before commissioning;
especially suitable for large-capacity transformers with voltage levels of 330kV and above;
This product is small in size and lightweight, making it ideal for field use.

Industrial Grade DC Demagnetizing Unit for Direct Current Line Integration 1

Risks of Residual Magnetism

Relay protection misoperation leads to repeated transformer commissioning failures;
Voltage surges from short-circuit fault clearance trigger protection misfires, shutting down all transformer-side loads;
Inrush current from an unloaded Substation A transformer causes "sympathetic inrush" in nearby Substations B/C transformers, leading to mis-tripping and widespread outages;
Excessive electric power from inrush current damages transformers and circuit breakers;
Switching overvoltage induced by residual magnetism harms electrical equipment;
DC components in inrush current over-magnetize CT magnetic circuits, degrading measurement precision and relay protection reliability;
Harmonics in inrush current contaminate grid power quality;
Grid voltage fluctuations (spikes/drops) disrupt other electrical equipment operation.

Las etiquetas:

Industrial Grade DC Demagnetizing Unit for Direct Current Line Integration

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