HFC 20kW Frequency Converter - Technical Specifications & Compliance Standards

The HFC 20kW Frequency Converter is a precision instrument designed for high-voltage testing applications, compliant with international electrical standards and featuring advanced control capabilities.

Key Specifications

Safety & Performance Features

• Insulation: 2kV AC for 1 minute (input/output to ground)

• Partial Discharge: ≤10pC at maximum output current

• Cooling System: Forced air cooling (<80dB noise level)

• Thermal Performance: <40K temperature rise on bridge arms, <50K on hottest points

• Duty Cycle: 90 minutes continuous operation at rated capacity

• EMI Protection: Magnetic shielding with high-permeability alloy leads

Control System Features

Control Cabinet Specifications:

1. Start/stop and emergency cutoff buttons

2. Voltage adjustment (coarse/fine control with settable ramp rates)

3. Frequency adjustment (0.1Hz resolution with settable sweep rates)

4. Automatic cooling fan direction selection

5. Dual operation modes: Automatic and manual testing

Advanced Testing Capabilities:

• Auto-tuning function for resonance testing

• Programmable test sequences (voltage ramp, dwell time, shutdown)

• Precision timing: 0-99min range with 0.1s accuracy

• Audible completion alarm

• Optical isolation between power source and control systems

Compliance Standards

The HFC 20kW meets stringent industry requirements:

• GB50150-2006: Hand-over test standard for electrical equipment installation

• DL/T 849.6-2004: High-voltage resonance test unit specifications

• DL/T596-1996: Preventive testing code for power equipment

Design Advantages

• Modular construction with separated power/control units

• Portable display and control interface

• Electromagnetic interference immunity for accurate measurements in high-field environments

• Fail-safe protection systems (overvoltage/overcurrent with adjustable thresholds)

This frequency converter provides reliable, precise power for insulation testing, cable testing, transformer testing, and other high-voltage applications requiring variable frequency AC power sources.