The LTCA-10 is a second generation load tap changer analyzer. It measures winding resistance of highly inductive transformers. A special feature is ability to graph the resistance trace of a transformer LTC during operation! Find out what contacts are starting to build high resistance.

Vanguard Instruments LTCA-40 Analyzer is a second generation load tap changer analyzer. The LTCA-40accurately measures winding resistance of highly inductive power transformers. Triple resistance-reading channels allow the measurement of three winding resistances simultaneously. Four-wire (Kelvin) connections provide high accuracy and require no lead compensation. A special feature of this device is its ability to measure and graph the resistance trace of a transformer LTD during operation. Using a 60Vdc power supply, the LTCA-40 is capable of outputting 40 amperes.

Vanguard Instruments now has a Doble transducer adapter (allows interface with a Doble transducer (linear or rotary) to a Vanguard circuit breaker analyzer.