1. Hall Sensor, Transmitter, and Protective Relay Series

This section details various Hall current and voltage sensors, transmitters, and protective relays. Hall current sensors operate between -40°C and +85°C with typical accuracy of 0.5%, supporting rated currents from low amperes up to high currents with voltage or current outputs. Installation options include PCB mounting, quick plug, pin, busbar built-in, and through-hole designs. Dielectric strength ratings reach several kilovolts, and frequency responses extend up to 150 kHz.

Hall voltage sensors cover rated currents from 1A to 1000A and voltages up to 660V, with output signals in DC current or voltage forms (0-20mA, 4-20mA, 0-5V, etc.) and accuracies between 0.2% and 1%. Transmitters handle AC/DC currents and voltages with outputs including analog and switching signals, featuring response times under 350ms. Protective relays monitor AC/DC mains voltage/current, temperature, phase sequence, and 3-phase mains voltage, with typical operating voltages of 110V to 230V AC and various mounting methods.

Mechanical dimensions for all devices are provided to facilitate installation.

2. Current Transformer Series

This section covers a wide range of current transformers (CTs) including split-core, power distribution, zero sequence, through-hole precision, primary coil built-in, variable range, mini high frequency, three-phase, and European standard types. Rated currents span from milliamps to thousands of amperes, with output currents typically 0.5A, 1A, or 5A, and voltage outputs in some models. Accuracy classes range from ±0.2% to ±10%, with some precision CTs achieving ≤0.1% linearity.

Dielectric strength ratings vary from 2 kV to 6 kV AC for 1 minute. Operating frequencies cover standard power frequencies (50/60 Hz) up to 20 kHz or 500 kHz for high-frequency models. Core materials include Permalloy, Nanocrystalline, Ferrite, and Silicon steel sheet. Installation methods include bus fixed, base plate fixed, DIN rail, sub-plate, suspension, PCB mount, and busbar built-in. Mechanical dimensions and mounting details are extensively documented.

3. Trigger, Driver, and Ignition Transformer Series

Trigger transformers support SCR, IGBT, and MOSFET devices with dielectric strengths from 2.5 kV to 5 kV and operating frequencies up to 200 kHz. Driver transformers operate typically between 1 kHz and 10 kHz, while high-frequency ignition transformers cater to specialized applications. Mechanical dimensions, pin configurations, and mounting details are provided for proper integration.

4. Power Transformer Series

This section includes PCB welding safety isolation transformers, terminal desktop isolation transformers, flat-type isolation transformers, toroidal transformers, sub-plate mount transformers, waterproof transformers, DIN-rail transformers, synchronous transformers, and machine tool control transformers (JKB4 and JKB7 series). Power ratings range from 0.35 VA to 1500 VA. Key electrical parameters include no-load loss (≤0.3W to ≤1.8W), voltage regulation (10% to 44%), dielectric strength (3.5 kV to 4 kV for 1 minute), and insulation class B.

Transformers feature vacuum epoxy encapsulation for fire resistance (UL94-V0), moisture protection, and durability. Installation options include PCB mounting, sub-plate, DIN-rail, and terminal connections. Waterproof transformers are designed for outdoor use with built-in temperature protection. Mechanical dimensions, mounting hole sizes, and weights vary by model and are detailed for installation accuracy.

5. Common Mode Choke Series

Common mode chokes (LN, LB2, LB3 series) are designed for switching power supplies to suppress common-mode interference. Current ratings range from 0.3A to 50A, with inductance values from 0.7 mH to 100 mH. Operating frequencies span DC to 1 kHz (LN series) and DC to 400 Hz (LB2/LB3 series). Dielectric strengths between coils and coil-to-shell range from 1.5 kV to 4 kV. Fire resistance rating UL94-V0 is standard. Mechanical mounting includes M4 screws and detailed pin configurations.

Critical Information Summary

• Operating Temperature: Generally from -40°C to +85°C depending on product type.
• Accuracy: Hall sensors and transmitters offer 0.2% to 1% accuracy; CTs range from ±0.2% to ±10%.
• Output Types: Voltage outputs (e.g., 2.5±0.625V), current outputs (4-20mA), and switching outputs are common.
• Dielectric Strength: Varies from 200V up to 6 kV AC for 1 minute, ensuring insulation and safety compliance.
• Installation Methods: Include PCB mounting, quick plug, pin, busbar built-in, crimp terminal, DIN-rail, plate-type, suspension, and through-hole.
• Response Times: Protective relays and transmitters respond within 150ms to 350ms.
• Frequency Response: Ranges from DC to 150 kHz depending on device type.
• Core Materials: Include Permalloy, Nanocrystalline, Ferrite, and Silicon steel sheet.
• Fire Resistance and Safety: UL94-V0 rating standard for insulation materials; RoHS compliance ensured.

Installation and Best Practices

• Follow precise mechanical dimensions and mounting hole specifications for secure installation.
• Do not open secondary circuits of current transformers to avoid damage.
• Verify environmental ratings (temperature, humidity) for reliable operation.
• Use vacuum epoxy encapsulated transformers for enhanced insulation and fire resistance.
• Consult manufacturer datasheets for model-specific parameters and customization options.

Conclusion

This comprehensive technical document serves as a detailed reference for selecting, installing, and applying a broad range of electrical measurement and protection devices including Hall sensors, current transformers, various transformers, and common mode chokes. It emphasizes electrical performance, mechanical compatibility, safety standards, and environmental compliance to support industrial and power distribution applications.

For further details and inquiries, visit the manufacturer’s website: http://www.yhdc.com.