By hvhipot 
Operation instructions of the ratio tester
1. Test wiring According to the condition of the tested product, correctly connect the test wiring.
1.1 Single-phase transformer or single-phase PT test wiring
The yellow and green test clamps of the red test line of the high voltage test end are connected to the high voltage end of the test object; the yellow and green test clamps of the black test line of the low voltage test end are connected to the low voltage end of the test object.
1.2 Single-phase CT test wiring
The yellow and green test clamps of the red test line of the high-voltage test terminal are connected to the secondary side of the tested product. The yellow and green test clamps of the black test line at the low voltage test end are located on the primary side of the tested product.
1.3 Three-phase transformer test wiring
The yellow, green, and red test clamps of the red test line of the high-voltage test terminal are connected to the high-voltage terminals a, b, and c of the tested product. The yellow, green, and red test clamps of the black test line of the low-voltage test terminal are connected to the low-voltage terminals a, b, and c of the tested product.
1.2 Intelligent power management
When the machine is not operated for a long time, the LCD backlight will be dimmed automatically to save power. The device is charged with low-power charging prompt function and over-discharge protection function; when the power of the machine is low, plug in the charger to charge, and the machine can be used normally during charging.
1.3 Instructions for using the printer
The printer key and printer indicator are integrated. After turning on the printer, the indicator light is always on when it is normal, and it flashes when the paper is out. At the press of a button, the printer feeds paper. Printer self-test: When the printer is turned on while holding down the key, a self-test strip will be printed.
Replace the printer paper: remove the rotating wrench and open the paper compartment cover. Put in the printing paper, pull out a piece (more than a bit of the tooth torn the paper), clean the paper, pay attention to the direction of the paper so that the side with the liquid medicine (smooth side) faces up. Close the cassette cover, press the paper feed shaft of the print head onto the printing paper, and then force the paper feed shaft of the print head back to the print head, and then press the rotating wrench to reset it.
For the use steps of the automatic ratio tester, please debug according to the paper version of the manual. Please consult with any questions. It will be resolved in a short time.