The Doble TR3190 is a highly precise digital motion transducer (often referred to as a combination rotary/linear transducer) designed specifically for testing high-voltage circuit breakers.
It measures the mechanical travel of a circuit breaker’s operating mechanism during an Open, Close, or O-C (Trip-Free) operation. By tracking this movement, the test system can calculate critical mechanical parameters, including:
Total Travel: The total distance the contacts moved.
Velocity / Speed: How fast the contacts part or close (crucial for extinguishing the electrical arc).
Overtravel: How far the mechanism pushes past its resting point before settling.
Rebound (Bounce): How much the contacts bounce upon closing, which can cause severe wear if excessive.
Mechanical Connection: The transducer is physically mounted to the circuit breaker’s operating mechanism or linkage using specific mechanical adapters (rods, clamps, or threaded fittings).
Digital Tracking: As the breaker slams open or closed, the physical movement spins or slides the transducer’s internal encoder.
Data Generation: It converts that physical movement into high-resolution digital pulses.
Analysis: It sends these pulses back to the analyzer, which plots a precise “travel curve” graph. You then compare this graph against the breaker manufacturer’s original factory specifications to detect mechanical wear, sluggishness, or misaligned linkages.
The TR3190 is a proprietary Doble accessory. It is primarily designed to plug directly into Doble’s 4th-generation TDR-series Circuit Breaker Test.
The 9084-UC specific adapter cable bridges the gap between the two ecosystems. It allows you to take a Doble digital travel transducer (like the TR3190 we were just discussing) and plug it directly into the digital transducer input channels on a Vanguard circuit breaker analyzer (such as the Vanguard CT-7000 or CT-8000 series).Â
Doble TDR900
Doble TDR9100
- Vanguard CT-7000
- Vanguard CT-8000
