With the widespread adoption of LED lighting, traditional energy-saving and fluorescent lamps are gradually being phased out of the market. In the coming years, LED lamps are expected to become the dominant lighting solution. However, during this transitional period, energy-saving and fluorescent lamps still play a significant role in certain industries. Like LED lighting systems, energy-saving lamps consist of light sources, electronic ballasts, and fixtures. Among these components, the electronic ballast is one of the most critical parts that greatly affects energy efficiency and lamp life. In particular, high-frequency ballasts (operating at 25kHz) used in T5 lamps have a major impact on performance. Therefore, accurately testing these high-frequency ballasts is essential.
To address this need, the International Electrotechnical Commission (IEC) has developed several standards for testing fluorescent lamps. These include IEC60081 for double-ended fluorescent lamps and IEC60901 for single-ended fluorescent lamps. Additionally, there is an equivalent test method designed to meet practical requirements. In response to these standards, Shanghai Lijun Electronics has developed a comprehensive testing system called HFP-800 (high-frequency test power supply) + RB-3 (high-frequency reference ballast) + LPS-3 (lamp preheating source). This system fully complies with both IEC60081 and IEC60901 standards and provides a reliable environment for testing reference lamps.
The working principle of the HFP-800 system is illustrated in Figure 1. According to IEC60081 and IEC60901, the reference ballast plays a crucial role by maintaining a stable voltage-to-current ratio under rated frequency conditions, regardless of voltage, temperature, or environmental changes. The RB-3 reference ballast uses a non-inductive resistor design, while the HFP-800 supplies pure, high-frequency power to it. The LPS-3 preheating system ensures proper lamp startup. All components are designed and manufactured according to IEC specifications, ensuring accurate and consistent test results.
In addition to the HFP-800 system, Shanghai Lixin Electronics has also introduced the HCS-105A high-frequency reference ballast testing system. This system uses the same constant current test method as the IEC standard but offers a more cost-effective solution for smaller laboratories and manufacturers. As shown in Figure 2, the HCS-105A functions as both a high-frequency reference ballast and an electrical parameter meter. It delivers high-voltage starting signals to the lamp, operating within a frequency range of 20–26kHz and providing adjustable currents from 100mA to 500mA.
One limitation of the constant current test method is that the internal impedance of the high-frequency power source can interfere with the lamp’s normal electrical parameters, leading to errors of approximately 5% to 30%. Despite this drawback, the HCS-105A system remains a practical choice for smaller-scale testing environments, offering a balance between cost and accuracy. Whether using the full IEC-compliant HFP-800 system or the more economical HCS-105A, manufacturers and laboratories can ensure reliable and standardized testing of fluorescent lamps during the transition to LED technology.
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