YTC401Single-phase Relay Protection Tester is suitable for measuring the opening and closing time of single-circuit dry contacts or live contacts, positive and negative pulse width measurement, time interval measurement between dual-channel signals, and whole group testing. This instrument is fully featured, and a single unit can complete all the above tests at once. It has strong applicability, and all measurements of time, AC/DC voltage and current are digitally displayed,relay protection tester with intuitive and accurate readings, keypad operation, convenient and flexible. Key components are imported, ensuring stable performance, safety and reliability. The whole machine is modularly designed for easy maintenance, small size, light weight, and portability. It is an advanced new type of relay protection calibration instrument with a high performance-to-price ratio.
1. Verify equipment usability
Before using the instrument, first observe whether the appearance is damaged. After powering on, check whether the meter head displays and whether the display is complete. For instruments that have not been used for a long time, also check whether the output terminals are corroded or aged; otherwise, clean them promptly before use. When using, refer to the "Operating Instructions" method.
2. Equipment maintenance
After each test, clean the connections on the instrument terminals, turn off the power, unplug the power cord, close the case cover, and store in a dry, dust-free, ventilated room without corrosive gases.
3. How to replace the fuse
The fuse of the instrument is integrated with the power socket. To replace it, first unplug the power cord, then use a small flat-head screwdriver to pry out the fuse box from the top.
