Digital ratiometer HZBB-10S

for transformers

The hand-held transformer turn ratio tester is an innovative product with a compact size, hand-held operation, and enhanced portability, making it easy to carry. The product is primarily used for transformer ratio testing, polarity testing of PTs and CTs, and testing speed, with high accuracy. 1.The lithium battery power supply or 100-240V AC power supply is self-adaptive. After a single charge, more than 100 transformers can be continuously tested in the ratio group. The testing process is simple and convenient. 2.It features a blind measurement function, allowing for variable ratio and group tests even when there is no connection between the high and low voltage. 3.In addition to testing conventional transformers, Z-type transformers, and PT samples, it also includes a polarity test function for CT variable ratios, expanding its application range. 4.With a wide measurement range and high accuracy, the variable ratio measurement can reach up to 10,000, with a guaranteed test accuracy of 0.3% at the maximum value of 10,000. 5.It includes robust protection features such as reverse connection protection and output short-circuit protection. 6.The 5.6-inch super-bright industrial-grade color LCD screen remains visible even under strong sunlight. 7.Equipped with an external printer for convenient data printing. 8.Data can be stored locally or on a USB memory device. Technical Indicators Range 0.9～10000 Accuracy ±（Reading×0.1%+2 words）（≤500） ±（Reading×0.2%+2 words）（>500≤3000） ±（Reading×0.3%+2 words）（>3000） Resolution ration 0.9～9.9999（0.0001） 10～99.999（0.001） 100～999.99（0.01） 1000～9999.9（0.1） 10000 and above（1）