Product introduction

Our Bk Control Transformer Factory 100VA Step Down Transformer offers a robust capacity of 50000VA and below, expertly engineered to handle input voltages of 1000V and below within AC 50-60Hz circuits. This transformer is designed to operate continuously at its rated capacity, making it an indispensable power source for machine tools and various mechanical equipment. It serves as a reliable control power supply for common electrical devices, local lighting, and signaling power needs, ensuring seamless operation across applications.
· Designed for installation in locations where the altitude does not exceed 2000 meters;
· Ensures optimal performance within ambient air temperatures ranging from -25ºC to +40ºC, maintaining an average temperature that does not exceed +35ºC over a 24-hour period.
· Engineered to function efficiently where the relative humidity of the air does not surpass 90% at +25°C, and stays below 50% at +40°C, providing robust and reliable operation.
· Built for environments free of violent vibration and seismic shocks, ensuring safety from rain or snow hazards:
Ideal for mediums devoid of explosion risks, and where the presence of gas and conductive dust is insufficient to cause metal corrosion or insulation degradation, guaranteeing longevity and durability.
Transformers are ingeniously designed with varying structures to meet specific capacity, voltage, and usage requirements, typically categorized into two forms: with shell and without shell.
The transformer coils are crafted to be either double-winding or multi-winding. This design allows the secondary coil to utilize multiple taps or adopt multiple windings, thus achieving the precise voltage and capacity necessary for efficient distribution.
For our double winding transformer coil, the primary current is calculated as 11=Pe/1, while the secondary current is determined as 12=Pe/U2, ensuring precise and balanced energy distribution.
Apply |
Mines, oil fields, subways, power plants, schools, hospitals, commercial centers, high-rise buildings |
Installation height |
The altitude does exceed 1000m |
The waveform of the power supply voltage |
similar to a sine wave |
We are a professional manufacturer with 32 years of profound expertise in the electric equipment manufacturing sector. Our specialization encompasses a diverse range of products including transformers-both dry-type and oil-immersed models-voltage stabilizers, regulators, switchgear, compact substations, and frequency converters. Our rigorous quality control system is the backbone of our commitment to safety and excellence, earning us a respected name both nationally and internationally. At Dongliang Electric Co., Ltd., customer satisfaction is our driving force. We are dedicated to providing sincere, thorough, and satisfactory service. We warmly welcome you to visit our facility and explore the potential for a lasting partnership with us.
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Company Profile
Founded in 1992 with a robust registered capital of 50 million RMB, Dongliang Electric Co., Ltd. boasts nearly three decades of unparalleled expertise in manufacturing medium-voltage transmission and distribution electrical equipment. Our specialization spans an impressive range of transformers, including dry-type, oil-immersed, machine tool, environmental protection, control, and lighting lamp transformers. Additionally, our product lineup features voltage stabilizers, voltage regulators, switchgear, compact substations, frequency converters, and other cutting-edge electrical equipment products. Nestled in the renowned 'Electrical Appliance Capital of China,' Yueqing City, Zhejiang Province, our company is strategically positioned near the serene East Sea and the majestic Oujiang River to the south and the world-renowned national scenic beauty to the north. We steadfastly adhere to the principle of 'quality first, service first,' championing continuous improvement and innovation to fulfill our customers' needs. Our quality objective of 'zero defects, zero complaints' is achieved through a rigorous and comprehensive quality control system, ensuring our products' impeccable quality and safety. This commitment has earned us an outstanding reputation, endearing us to domestic and international customers alike. Customer satisfaction remains our perpetual pursuit, and we are dedicated to offering you the most sincere, thoughtful, and satisfactory service. We warmly invite you to visit our factory and forge an enduring partnership with us.
Company advantage

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Packaging & Shipping
Packing standard: We ensure the utmost protection for our products by using robust wooden cases or secure container shielding, providing peace of mind during transportation.
Q: Who are we?
A: We are Dongliang Electric Co., Ltd., a prestigious transformer company with an impressive 32-year heritage in expert transformer production, proudly based in Zhejiang, China.
Q: Can your product be customized?
A: Absolutely! Given the variations in voltage, frequency, and other unique aspects of transformer products across different countries and regions, our products can be tailored specifically to meet your unique requirements.
Q: How about your after-sales service?
A: We stand by our products with a remarkable 20-year after-sales quality guarantee, ensuring lasting satisfaction and support.
For more questions... Don't hesitate to reach out, and you will receive an immediate response from our dedicated team!