Control Transformer

control transformer

SDKC control transformers are high-quality transformers designed specifically for industrial automation, mechanical equipment, and electrical control circuits. Their primary function is to safely and efficiently convert higher primary voltages (such as 480V and 240V) to lower secondary voltages (such as 120V, 24V, and 110V) suitable for control circuits, PLCs, contactor coils, indicator lights, and other low-voltage electrical components. With exceptional stability, excellent anti-interference capabilities, and a rugged design, our transformers ensure stable operation in a variety of harsh industrial environments, making them key components for ensuring equipment safety and production efficiency.

A. Our company manufactures control transformers in the BK, DG, and DK series. The BK series control transformers (hereinafter referred to as transformers) are suitable for use as power supplies in circuits operating at 50Hz to 60Hz AC and voltages up to 690V. They are used in industrial and mining enterprises, for local lighting, control circuits, and for signal lights, indicator lights, and other components in electrical equipment.

B. With their high-quality construction and reliable performance, they ensure a stable power supply and protect equipment from voltage fluctuations. Suitable for a wide range of industries, these transformers are an indispensable and versatile component in any electrical system. They improve operational efficiency and safety, making them an ideal choice for various industrial environments.

C. These transformers can operate for long periods at rated load. When the primary and secondary windings of this transformer are separate, and the secondary winding has only one winding, it can withstand the full rated capacity of the transformer. If the secondary winding also has control, lighting, or indicator windings, they are wound separately according to the winding capacity allocation. For single-winding, center-tapped transformers, the capacity of each center tap is less than the rated capacity of the transformer, and only the highest voltage output terminal can withstand the rated capacity.

D. Capacity 5000VA or less, suitable for AC 50-60Hz circuits with input voltages of 1000V or less. The core is stamped from high-quality cold-rolled silicon steel sheets, offering advantages such as compact size, light weight, high power rating, significant bonding, and secure connection.

1. Control transformers are constructed from high-quality materials to ensure reliability and long-term performance. The primary and secondary windings are typically made of copper or aluminum conductors, favored for their excellent conductivity. The windings are insulated to prevent leakage and ensure safe operation.

2. The control transformer's core is constructed from high-grade electrical steel laminates. These laminations help reduce energy loss and minimize the effects of hysteresis and eddy currents. The core is designed to provide a low-reluctance path for the magnetic flux generated by the primary winding.

3. To protect the windings and core, control transformers are typically housed in a rugged enclosure, typically made of steel or other durable materials. The enclosure provides insulation and mechanical protection, shielding the transformer from external factors such as moisture, dust, and physical damage.

1. Altitude not exceeding 2000 meters;

2. Ambient air temperature -35°C to +40°C, with a 24-hour average not exceeding +35°C;

3. Relative humidity not exceeding 90% at +25°C and 50% at +40°C;

4. Location free from severe vibration, impact, rain, or snow;

5. In a non-explosive medium, free from gases and conductive dust that could corrode metal or damage insulation.

BK Series：

DK Series：

Control transformers have a wide range of uses where precise voltage control and isolation are required. Some common applications include:

Industrial Machinery

 

Control transformers are used in a variety of industrial machinery, such as conveyor systems, pumps, and motors. They provide the necessary voltage regulation and isolation to ensure smooth operation and protect the control equipment.

Heating, ventilation, and air conditioning (HVAC) systems

 

Heating, ventilation, and air conditioning (HVAC) systems often require control transformers to regulate the voltage of the control circuits. These transformers help maintain optimal temperature and airflow control in commercial and residential buildings.

Motor Control Center

 

The control transformer is a crucial component of a motor control center (MCC). MCCs are used to control and protect motors in industrial applications. The transformer provides the voltage levels necessary for motor control and ensures safe operation.

Lighting Control Systems

 

Control transformers are used in lighting control systems to regulate the voltage required for dimming and switching operations. They enable precise control of lighting levels in commercial buildings, theaters, and other venues.

Q: What materials are your products made of?

A: Primarily aluminum or copper. This depends on your needs and budget.

Q: What packaging do you use?

A: For large products, we use sturdy wooden boxes for protection. For smaller products, we use cardboard boxes.

Q: What is a control transformer?

A: A control transformer is a transformer specifically designed to regulate the voltage in control circuits. It is primarily used to step down high voltage to a lower, more controllable voltage to power control equipment.

Q: What is the minimum order quantity?

A: 1 set.

Q: What specifications should we provide when inquiring for a quote?

A: 1. Power capacity (unit: KVA or kW) 2. Input voltage 3. Output voltage.

Q: What are the key parameters for factory commissioning of a control transformer?

A: Core parameters include input voltage, output voltage, insulation resistance, polarity/phase, etc.

Q: Does a control transformer require maintenance? How is it maintained?

A: Yes. Regularly clean and remove dust, tighten terminals, measure insulation resistance, listen for abnormalities, and prevent moisture and overheating to ensure safe operation.

Q: What product tests are performed on control transformers before they leave the factory?

A: At a minimum, they undergo a visual inspection, winding resistance, insulation resistance, power frequency withstand voltage, no-load test, and turn-to-turn insulation test. All test results are recorded, and a factory inspection report is provided with the product.

Q: What material is the transformer made of?

A: One material is pure copper, and the other is aluminum. The choice depends on your needs. If functioning properly, there's no difference between the two materials; the only difference is a longer lifespan. Pure copper transformers are better quality but also more expensive.

 

 

Conclusion：

The SDKC transformer series is a power solution that combines exceptional efficiency, rock-solid reliability, and forward-thinking design. Leveraging our years of experience in electrical equipment manufacturing, the use of advanced materials and optimized designs, adherence to rigorous testing standards, and customer-centric solutions, we are committed to providing long-lasting, stable, and efficient core power for your power grid, industrial facility, or critical project.

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