1. Dual use of AC and DC: lithium battery power supply or 220V AC charger power supply adaptive.
2. With one charge, 100 transformer ratio groups can be continuously measured.
3. Intelligent charging management, remaining battery display, low battery alarm, automatic backlight adjustment, saving power.
4. The three-phase sine inverter power supply outputs with automatic voltage regulation and has soft start and soft stop functions, resulting in fast testing speed and high accuracy.
5. Three phase transformer, single-phase transformer, PT, Z-type transformer ratio, group, polarity testing function.
6. It has blind testing function, which means conducting ratio and group tests without knowing the high and low voltage connection methods.
7. CT variable ratio polarity testing function.
During single-phase testing, it has the function of angle difference testing.
9. The tap gear can be tested up to 197 gears.
10. The testing range is wide, up to 10000.
11. High and low voltage reverse connection protection function.
12. Output short-circuit protection function.
13. Clock and date display without power failure; The data storage methods are divided into local storage and USB storage. Local storage can store 500 pieces of test data, and local storage can be converted to USB storage; The USB flash drive stores data in Word format, which can be directly edited and printed on a computer.

1. Measurement range: 0.9-10000
2. Minimum resolution: 0.0001
3. Measurement accuracy: ± 0.1% (variation ratio<1000); ± 0.3% (variation ratio 1000~10000)
4. ± (reading x 0.1%+2 words) (less than or equal to 500)
5. ± (reading x 0.2%+2 words) (greater than 500 but less than or equal to 3000)
6. ± (reading x 0.3%+2 words) (greater than 3000)
7. Resolution: 0.9 to 9.9999 (0.0001)
8.100~999.99 (0.01) 10000 and above (1)
9．10～99.999（0.001）1000～9999.9（0.1）
10. Output voltage: maximum 35V/50Hz
11. Measurement times:>800 times (fast mode)
12. Data storage: 100 sets of measurement data
13. Automatic shutdown: No operation for 5 minutes to shut down
14. Communication interface: Wireless Bluetooth communication (optional)
15. Working power supply: built-in battery or external charger, charger usage conditions, input 100-240VAC, 50/60Hz
16. Built in battery: 12V/5.2AH power lithium battery pack
17. Charger: 3 sets of DC4.2V/2A
18. Charging time: Charging time is about 3 hours
19. Operating temperature: -20 ℃ to 40 ℃
20. Relative humidity: ≤ 80%, no condensation
21. Weight: 1.34 kg (excluding cables)
22. Volume: 210mm × 150mm × 70mm