Contact Testing/Inspection TRIZ Cases

Pressure and distance sensing track breaker overtravel and contact force, helping offset wear and spring fatigue to keep switching reliable.

A built-in bypass path lets crews test a disconnect switch without cutting power, using shared insulators and ground-level operation.

A simplified ODE-based travel curve model links measured motion to spring, damper, and mass changes for precise diagnosis and maintenance planning.

Integrated sensors and a controller track switch conditions in real time and shut down operation when safety ranges are exceeded.

Clocked voltage or current pulses detect switching contact state while reducing power dissipation, heat input, and contact impurity risk.

Two actuator coils infer position without extra sensors, enabling fault reclosing, visible dropout isolation, and weather-tight protection.

An optical sensor and discriminative member track contact wear in a vacuum circuit breaker for timely maintenance and improved reliability.

A mechanically operable recloser uses plunger position sensing and external status indication to detect contact erosion and simplify maintenance.

Combining electric field, temperature, and light sensing reveals arc event patterns that indicate electrical contactor degradation before hazardous welds occur.

A bi-stable actuator and sealed housing let this recloser interrupt faults, reclose, and then drop out with a visible gap in harsh weather.

Calculating relay remaining life from switching cycles and coil power enables condition-based replacement and avoids premature or delayed maintenance.

Coil voltage and current are integrated into magnetic flux to track core position and diagnose contact wear without added sensors.

Coil voltage and current are integrated into magnetic flux to infer actuator core position and diagnose contact wear without extra sensors.

A reset lockout blocks line-to-load reconnection when ground faults or open neutral conditions persist, enabling safer breaker reset.

Tracks current at each switching event to update electrical contactor life estimates accurately under variable operating loads.

An external indicator rod reveals vacuum switch overtravel, helping verify electrode contact pressure without adding mass to moving parts.

A reset lockout mechanism links a single actuator, latch arm, and circuitry to block reconnection during faults and allow proper reset.

A photosensor and stepped discriminative member track push rod displacement to monitor vacuum breaker contact wear for timely maintenance.

Coil current and voltage are used to calculate magnetic flux and track contactor core motion accurately without added position sensors.

A feedback-controlled relay armature sets a consistent contact gap to cut arcing and stabilize point-on-wave switching timing.

Contact bounce time after relay ON is compared with a threshold to detect deterioration more accurately than operating-time diagnosis.

Contact bounce time after relay energization reveals deterioration more accurately than operating time despite individual relay differences.

Position sensors track electrode transition timing across circuits to detect abnormal vacuum breaker synchronization during normal operation.

Magnetic flux calculated from coil voltage and current tracks actuator core motion during opening for more precise switch wear diagnosis.

Armature displacement measured during switch-off reveals contact thickness loss, enabling predictive maintenance before contactor failure.

An optical slit target and light sensor track push rod motion to detect abnormal vacuum breaker timing without rotary sensor wear.

A linear sensor on the push rod measures contact displacement to detect wear in time and guide maintenance before breaker performance degrades.

A bi-stable actuator and dropout sequence let a cutout recloser restore service, then isolate persistent faults with a visible gap.

An indicator stem linked to the mobile electrode makes overtravel visible outside the insulator, helping monitor contact pressure as parts wear.

Direct acceleration sensing on the mobile contact detects switching irregularities early, improving wear prediction and reducing premature downtime.

Voltage difference tracking across relay contact cycles predicts remaining switching life, enabling timely maintenance before failure.

Multiple plunger position sensors and a single-coil actuator help a compact recloser detect contact erosion and support manual opening and closing.

Altering pole and relay opening or closing order shares arcing across contacts, reducing erosion, torque oscillations, and wear.

Position sensing tracks contact transition timing in vacuum interrupters to detect phase synchronism faults without shutdowns.

Inductive resonance replaces tolerance-sensitive capacitive coupling to detect knife-conductor contact accurately in rotary wire stripping.

Integrated current and acceleration sensing captures first-trip breaker data wirelessly without extra switching or panel access.

Periodic current application clears contact impurities and resolves temperature-induced sticking, preventing ECU failure detection from false relay states.

Optical detector captures characteristic spectra from arc plasma to identify contact wear conditions.

Derive movable contact travel curves from actuator voltage and current shapes using electromagnetic modeling.

Voltage-dependent lookup tables adjust motor parameters during switching to eliminate imaging errors caused by overvoltage and undervoltage conditions.

A remote switch status detector uses an electronic oscillator and coil to output oscillating voltage varying with switch position.