BK Series Single Phase Control Transformer

Product Overview

The BK series single-phase control transformer is a dedicated power conversion device for low-voltage industrial control and machine tool electrical systems. It steps down or converts the main distribution voltage to the required control voltage, providing stable and safe power supply for control circuit components such as contactors, relays, solenoids, indicators and measuring instruments.

It adopts a classic EI laminated silicon steel core structure with high magnetic permeability, matched with high-purity oxygen-free copper windings, which delivers low no-load current, low loss and high operation efficiency. The primary and secondary windings can be configured with multiple voltage taps to flexibly adapt to different grid voltages and load voltage requirements. The all-in-one insulated terminal block design ensures safe wiring and reliable connection. With base mounting structure, it is suitable for fixed installation in machine tool electrical cabinets, control panels and industrial distribution boxes. It is widely applied in machine manufacturing, automation equipment, packaging machinery and industrial control systems.

Key Product Features

✅ High-Purity Pure Copper Windings Adopts oxygen-free pure copper wire windings with reliable insulation treatment. Low DC resistance, low temperature rise, high conductivity and long service life. Ensures stable output voltage and high efficiency under long-term continuous operation.

✅ EI-Type Silicon Steel Core Laminated high-grade cold-rolled silicon steel sheet core with high magnetic permeability and low iron loss. Effectively reduces no-load current and core loss, improves overall efficiency and reduces operation noise.

✅ Flexible Multi-Tap Voltage Configuration Supports multiple voltage taps on both primary and secondary sides. Common input voltages include 380V, 220V; common output voltages include 110V, 48V, 36V, 24V, 12V, 6V. Custom voltage combinations can be provided according to specific requirements.

✅ Integrated Insulated Terminal Block Equipped with high-strength insulated terminal row with clear terminal markings. Safe and convenient for on-site wiring, prevents short circuit and improves connection reliability. Suitable for both cable and bus bar connection.

✅ Rigid Base Mounting Structure Galvanized steel mounting base with pre-drilled fixing holes. Firm and reliable panel mounting, good mechanical strength and vibration resistance, suitable for machine tool and industrial equipment operation scenarios.

✅ Class B Insulation Grade Class B insulation grade (130℃ maximum temperature rise), with reliable inter-layer and winding-to-core insulation. Passed dielectric strength test, ensures electrical safety and long service life in industrial environment.

✅ Industrial Grade Reliability Designed and manufactured according to industrial transformer standards, with strict quality inspection including no-load test, load test, withstand voltage test and insulation resistance test. Stable and reliable performance for long-term continuous operation.

Technical Specifications

Application Scenarios

• Machine tool electrical control circuit power supply
• Industrial control panel and automation equipment voltage conversion
• Contactors, relays, solenoids and indicator power supply
• Measuring instruments and control device power supply
• Packaging machinery, textile machinery and printing machinery control systems
• Low-voltage distribution cabinet auxiliary control circuit power

Our Advantages

1. Genuine pure copper material guarantee All windings adopt high-purity oxygen-free copper wire, no aluminum substitute. Low temperature rise, low loss and long service life, ensuring stable performance under long-term continuous operation.
2. Flexible voltage customization capability Rich standard voltage combinations in stock. Support custom input and output voltage, multi-tap configuration and special capacity according to customer project requirements.
3. Strict full-item factory inspection Each transformer undergoes no-load characteristic test, load voltage test, dielectric withstand test and insulation resistance test before delivery to ensure out-of-box quality and on-site reliability.
4. Standard installation dimensions Industry-standard mounting dimensions and terminal layout, can directly replace mainstream BK series control transformers on the market without modification to the installation panel.
5. Complete technical support service Provide dimension drawings, selection guides and technical parameters to support project design and tender bidding. Fast response for overseas technical consultation and after-sales support.

Custom Solution

We provide project-oriented custom solutions for BK series control transformers:

• OEM Brand Customization: Custom silk-screen logo and nameplate on transformer body and terminal cover for branded resale.
• Voltage & Capacity Customization: Custom input/output voltage, number of taps and power rating according to specific circuit requirements.
• Structure Customization: Custom mounting dimensions, terminal arrangement and lead wire type according to installation requirements.
• Export-grade Custom Packing: Neutral carton, customer-branded packaging, shockproof reinforced packing for long-distance sea transportation.
• Large-order Priority Production: Priority production schedule for large-volume project orders to guarantee delivery lead time.

Share your required power rating, input/output voltage and application scenario, our engineers will recommend the most suitable control transformer solution within 24 working hours.

FAQ

Q1: What is a control transformer used for?

A: A control transformer is used to convert the main distribution voltage to a lower control voltage, providing safe and stable power for control circuit components such as contactors, relays, solenoids and instruments in machine tools and industrial systems.

Q2: Are the windings made of pure copper?

A: Yes. All BK series control transformers adopt high-purity oxygen-free pure copper windings, which feature low resistance, low temperature rise and high efficiency, ensuring long-term reliable operation.

Q3: Can I customize the input and output voltage?

A: Yes. We support custom voltage combinations on both primary and secondary sides, as well as multi-tap configurations. Please provide your specific voltage requirements.

Q4: What is the insulation grade of this transformer?

A: Standard BK series control transformers adopt Class B insulation, with maximum allowable temperature rise of 80K and maximum winding temperature of 130℃. Higher insulation grade can be customized on request.

Q5: How is this transformer installed?

A: It adopts base panel mounting with pre-drilled mounting holes. It can be fixed inside control panels, machine electrical cabinets and distribution boxes with screws.

Q6: Do you support OEM private label service?

A: Yes, we support custom logo and nameplate printing on the transformer. A certain MOQ applies for OEM service.

Q7: What power ratings are available for this series?

A: Standard power ratings cover from 50VA up to 5000VA. Special power specifications can also be customized according to project requirements.

Package Content

1 × BK Series Single Phase Control Transformer