Instrumentation

The Transformer Turns Ratio Tester is a high-performance instrument designed for the automatic testing of transformer ratio, phase group, and polarity across a wide range of transformer types—including single-phase, three-phase, and Z-type transformers, as well as PTs and CTs. With a user-friendly 5-inch full-color touchscreen interface, Bluetooth mobile app support, and dual input methods (touchscreen and buttons), this tester is ideal for on-site diagnostic and maintenance tasks. Its internal memory, overload protection, and compliance with international safety and EMC standards make it a robust and reliable tool for professionals.

• Supports blind testing and Z-type transformer group testing

• Wide variable ratio range from 0.9 to 10,000

• 5-inch full-color touchscreen for intuitive operation

• Dual control mode: touchscreen and buttons

• Internal memory for 500 test records

• Bluetooth-enabled mobile app for wireless control and data transfer

• Long-lasting 3800mAh rechargeable lithium battery

• Low battery indicator and configurable auto shutdown (1–30 minutes)

• High insulation resistance and voltage withstand capacity

• Built-in overload protection for safe testing

• Conforms to IEC61010-1 and CAT III 600V safety standards

• Power transformer maintenance and testing

• Factory transformer acceptance tests

• On-site PT/CT ratio verification

• Transformer manufacturing and commissioning

• Electrical utility and substation operations