The Megger 550503 is a three-phase transformer turns ratio (TTR) test set. The 550503 Three-Phase Automatic TTR is designed to measure the turns ratio of power, instrument, and distribution transformers in a substation or manufacturing environment. The Megger 550503 is also particularly suited for testing in power transformer manufacturing environments where testing of complex, three-phase substation power transformers can be performed quickly while minimizing the possibility of errors.
Key features of the Megger 550503:
Fully automatic operation
Measures three phases simultaneously
High ratio measurement (20,000:1)
High accuracy (0.1%)
Built-in storage and downloading capabilities
Measures all power transformers, PT's and CT's
Displays % error vs. name plate and pass/fail limit
Operator choice of %22quick%22 test or complete %22full%22 test
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