Field ServiceDiagnostics & Troubleshooting4HighField Technician$ implied

10HP motor on a 20HP VFD trips with output phase loss error after 10 seconds despite correct wiring and balanced output when disconnected.

No portable megger (insulation resistance tester) available on weekends to definitively test motor windings; need to take motor to rewind shop.

Opp. Score

Severity

4High

Willingness to Pay

implied

Added

Apr 26, 2026

Workarounds Described

continuity checks with multimeter as substitute for megger on Sunday

Implied Software Gaps

Portable motor winding diagnostic tool that includes megger, surge test, and inductance measurement for immediate field testing

App Concept

WindingGuard Field Tester

A handheld device that performs insulation resistance (megger), inductance, and surge tests on AC motors up to 500HP, providing immediate pass/fail results and detailed diagnostics for phase-to-phase and phase-to-ground faults. Eliminates the need to haul motors to rewind shops or wait for bench testing.

Key Features

Insulation resistance test up to 1000V (megger)
Inductance balancing to detect shorted turns
Surge test for turn-to-turn faults
Portable, battery-powered, rugged design for field use
Wireless Bluetooth to log results to smartphone app

Target Users: Electrical and HVAC field service technicians and motor repair shops working on industrial three-phase motors on weekends or in remote locations.

Revenue Model: $499 one-time device purchase + $19/month for cloud storage and advanced reporting

Existing Solutions Mentioned

multimetercontinuity checks

Part of App Idea

DiagPath HVAC

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