HZTTR80AP Transformer Turns Ratio Tester VS HZTTR80A Transformer Turns Ratio Tester

Dec 13, 2025

Comparison Dimension	HZTTR80AP	HZTTR80A
Power Supply Method	Equipped with a built-in 14.8V, 10Ah lithium polymer battery. A single full charge supports at least 1000 measurements. Comes with a dedicated charger (input voltage 100-240V, 50/60Hz). The charger indicator light changes from red to green when charging is complete.	Uses AC power supply, with an operating voltage range of 85-264VAC, 47-63Hz. Equipped with a three-wire power cable. The control circuit includes a fuse (located in the power socket and switch module, replaceable by the operator).
Core Function Difference	New auto-shutdown feature: Automatically powers off after sounding an alarm following 30 minutes of inactivity.	No auto-shutdown function.
Power-Related Accessories	Package contents include the charger and the charger's AC cable.	Package contents include the power cable and fuses (2 pieces). Does not include any charger-related accessories.
Power-On Operation	Turn on by switching the power switch to the "I" (ON) position (battery power).	Requires connecting to AC power first, then switching the power switch to the "I" position to power on.
Low Battery/Power Handling	When power is low, charge promptly. After turning off the instrument, insert the charger's DC output plug into the charging port and connect the other end to an AC power source.	No concept of low battery. Must ensure the supply voltage matches the instrument's operating voltage. In case of malfunction, check if the power fuse is blown.
Battery Life / Operational Autonomy	Relies on the built-in lithium battery, providing independent operational autonomy. Suitable for on-site testing scenarios without external power sources.	Completely reliant on external AC power supply. Has no independent operational autonomy. Must be used in environments with a power supply.