Product Overview
The XHJJ302A High-Voltage Switch Comprehensive Tester is a device for measuring the mechanical characteristic parameters of switches. It is suitable not only for vacuum switch speed measurement but also for other high-voltage circuit breakers (oil, SF6 switches, etc.), contactors, and relay timing. It features a top-opening mechanism, small size, light weight, and complete accessories.

Performance Features
1. The instrument can automatically identify the open and closed states of the contacts and prompt the corresponding closing and opening operations based on the reference contact state;

2. 12 contacts can be detected, and their connection status is displayed, making it convenient for users to check the wiring;

3. The instrument can store 50 sets of test results;

4. Large-screen LCD (320×240) display, no reflection or black screen in sunlight, graphic and Chinese character menus, operation prompts, and a menu-driven interface for easy operation;

5. The instrument has a graphic analysis function, allowing simultaneous display of waveforms and measured data, making the testing process more intuitive;

6. The instrument has a built-in delay protection function, which automatically cuts off the coil voltage after the circuit breaker operates, effectively protecting both the circuit breaker and the testing instrument;

7. This instrument can perform both electric and manual opening and closing tests;

8. High and low voltage tests can be performed;

9. Reclosing tests can be performed, including close-open, open-close, and open-close-open parameter measurements;

Technical Parameters
★ Time Measurement: 0.01～9000ms  1%±(1% reading + 2 digits)
★ Speed ​​Measurement: 1mm sensor 0.01～25.00m/s
0.1mm sensor 0.001～2.50m/s
0.5° angle sensor 1 cycle / 0.5°
★ Stroke Measurement: Sensor: 50mm, Resolution: 0.1mm  Setting 5mm～900mm
360-line sensor: 360°, Resolution: 0.5°
★ Operating Voltage: AC 220V±10%  50±1Hz
★ Operating Environment: -10℃～40℃   RH≤80%