Megger TTR320-47 Transformer Turns Ratio Tester

The TTR300 Series of three-phase transformer turns ratio test sets are designed to measure the turns ratio of power, instrument, and distribution transformers in a substation or manufacturing environment. The instruments are ideal for use by power transformer manufacturers. Their unique testing procedures and storage capability allows an operator to set up and test difficult three-phase transformers in a fraction of the time than it used to take with other TTRs.

The TTR300 Series also measure the phase deviation of the transformer primary versus secondary. This quickly indicates problems such as partial shorted turns and core faults. This is also useful in verifying phase errors in all types of PTs and CTs.

Each unit comes equipped with a remote-control switch for single person testing. This allows the operator to test transformers with LTCs very quickly.

The TTR320 features a high contrast bright 5.7” full VGA colour display and employs a full QWERTY keyboard. Communications ports are provided in the form of RS-232, USB, and Ethernet ports.

Additional Resources

Data Sheet (pdf)
User Guide (pdf)