High voltage switchgear testers typically employ an integrated, portable design, featuring a compact structure for easy field operation. Their main structural features include:
Integrated Portable Housing: Most instruments integrate the main unit, power module, measuring cables, and sensors within a robust aluminum alloy or engineering plastic housing. The dimensions are generally between 330mm–402mm (length), 260mm–286mm (width), and 160mm–200mm (height), with a weight typically ranging from 5kg to 10kg, facilitating portability and rapid field deployment.
Large Color Touchscreen: Equipped with a high-resolution color LCD screen, supporting Chinese and English menu operation, some models also feature touch functionality, enhancing the human-machine interface.
Built-in Adjustable DC Power Supply: Integrates an adjustable DC power supply of 30V–270V (some up to 300V), with an output current of 10A–20A, which can be used to drive the circuit breaker's opening and closing coils, supporting low-voltage operation testing.
Multi-channel signal acquisition system: Supports 12 independent metal contact time channels, enabling simultaneous measurement of time parameters at multiple breaks; Equipped with a displacement signal acquisition channel, compatible with various types of linear resistance sensors, angular displacement sensors, photoelectric encoders, etc., to achieve stroke and speed measurement.
Modular interface design: Provides multiple standard interfaces, such as RS232, USB, and USB flash drive interfaces, supporting test data export, PC online analysis, and report generation.
Anti-interference and protection design: Employs floating design, digital filtering, and large-area grounding technologies to enhance electromagnetic interference resistance; some high-end models have IP54 protection rating and wide temperature operating capability (-20℃ to +50℃), adapting to complex substation environments.
