Product No: DFX-WD20A
The DFX-WD20A Tungsten/Halogen Lamp Load Cabinet is a specialized device designed and manufactured specifically for performance testing of fixed electrical switchgear. The equipment simulates the current surges and long-term electrical effects that switches may encounter in actual use through specific load combinations. This assesses the switch’s withstand capability during repeated operation, checks for any problems affecting normal function, and ensures the switch’s reliability in long-term use. The equipment is equipped with comprehensive control and display components, allowing for convenient adjustment of the output status. It also employs a powerful airflow system to effectively cool the heat generated during operation. A stable connection to the tested product via a terminal block ensures a smooth and accurate testing process.
Standards:
| Standards | Standards Name |
| IEC 60669-1:2017 | Household and similar fixed electrical installations – Switches – Part 1: General requirements |
| GB/T 16915.1-2024 | 家用和类似用途固定式电气装置的开关 第 1 部分:通用要求 |
| GB/T 2099-2021 | 家用和类似用途插头插座 |
| GB/T 4943-2022 | 信息技术设备 安全 第 1 部分:通用要求 |
| GB 7000.1-2023 | 灯具 第 1 部分:一般要求与试验 |
Specification:
• Power Supply: Single-phase three-wire AC220 ± 10%/50Hz
• Digital voltage meter: voltage range 0-300V, accuracy ± 0.5%± 2D
• Digital current meter: 0~40A, accuracy ± 0.5%± 2D.
• Digital power meter: 0~9kW, accuracy ± 0.5%± 2D.
• Loading method: Built -in 3 sets of 200W tungsten filament light/halogen light combination, circulating and power on.
• Number of output channel: 1.
• Load power supply capacity: 7.5KVA
• The maximum output current is 20A, and the load is automatically cut off when it exceeds 22A.
• The maximum output voltage is 300V, and the load is automatically cut off when it exceeds 305V.
• Selection of tungsten filament/halogen lights: each lamp is 200W power, divided into 1/2/3/4/10/10 pieces combination.
• Digger: 0~999999 times can be set.
• With long sticky protection function: The long-stick limit time range is 0-99s and can be set.
Notes: DFX-WD20A Tungsten/Halogen Lamp Load Cabinet usually should work together with LISUN CZKS-6 6 Position Plug Socket Switch Life Tester.

IEC 60669-1 Clause 18.3 Tungsten/Halogen Lamp Load test