The XHBB128B Transformer Turns Ratio Tester is a precision instrument designed for comprehensive transformer testing with a 2-year warranty. This advanced digital ratio group meter overcomes traditional transformer ratio bridge limitations with intuitive operation and rapid, accurate testing capabilities.

• Performs turns ratio or voltage ratio tests on operational transformers
• Verifies transformer turns ratio correctness and tap changer condition
• Detects short-circuits between transformer turns
• Determines transformer parallel operation compatibility

• Three-phase precision inverter power supply for fast, accurate testing
• Simultaneous single-phase and three-phase testing capability
• Automatic calculation of transformation ratio values, error percentages, and tap positions
• Three-phase group testing with automatic group number determination
• Phase angle measurement between phases
• 7-inch high-definition color touch screen LCD with modular display
• Comprehensive English operation prompts for intuitive use

Suitable for diverse transformer types including Z-type transformers, rectifier transformers, ground transformers, electric furnace transformers, phase-shift transformers, and balanced transformers.

• High and low voltage reverse protection
• Transformer turns inter-short circuit protection
• Tap changer opening and closing protection
• Full output short circuit protection

• Print output capability
• USB interface for data transfer
• Optional RS232 interface for paperless office integration