Ensure insulation reliability with impulse winding testers, partial discharge detectors, and integrated QA systems – trusted for EV and industrial motor applications.

Why Motor Coil QA Matters

EV and industrial motors demand high insulation reliability.

Motor coil testing detects insulation weaknesses early, preventing failures and ensuring safety and performance.

❗ Problem – Coil Insulation Failures

Voltage surges, thermal stress, and aging lead to insulation breakdown.

✅ Solution – Advanced Motor Coil Testing

Impulse and partial discharge testing detect defects before failure.

Impulse Winding Testers

→ Detect weak coil insulation

Partial Discharge Testing

→ Identify early-stage degradation

Integrated QA Systems

→ Complete testing for armature & stator

Explore Motor Coil Testers

Motor Coil QA & Safety Testing Solutions

Impulse Winding Testers

Simulate inverter surge to detect weak points in coil insulation.
Impulse winding testers apply surge voltages to evaluate coil insulation and detect winding defects before motor breakdown.

		Model	DWIT-05
		Maker	ECG-KOKUSAI
		Advanced Impulse Tester with PD detection
		Featuring 5 kV impulse voltage, 300 MHz/12-bit waveform capture, and PD detection, the DWIT-05 delivers high-accuracy, nondestructive coil testing for modern QA teams.
		Model	DWX-15
		Maker	ECG-KOKUSAI
		Reliable Surge Testing
		Up to 15 kV impulse testing with 100 MHz sampling—DWX-15/DWX-15PD delivers reliable insulation and partial discharge (PD) detection for motor and coil QA.
		Model	ST4030A
		Maker	HIOKI
		High-resolution Impulse Winding Tester
		Engineered for EV motors, the ST4030A combines 4,200 V impulse testing with 200 MHz/12-bit waveform analysis to identify single-turn faults and hidden insulation defects.

Partial Discharge Testing

Detect micro-defects in insulation before complete breakdown.
Partial discharge testers identify early-stage degradation, preventing failures and ensuring motor coil safety.

		Model	*DWIT-05PD**
		Maker	ECG-KOKUSAI
		Advanced Impulse Tester with PD detection
		Combines surge testing with PD measurement to evaluate coil insulation under inverter-like stress.
		Model	ACPD-05X
		Maker	ECG-KOKUSAI
		AC Partial Discharge Test System
		Simulates AC operating conditions to evaluate insulation durability.
		Model	ST4200
		Maker	HIOKI
		Partial Discharge Detector
		Sensitive detection of PD events for research and QA environments.

Integrated Coil QA Systems

Comprehensive QA for armature and stator coils in production lines.
Integrated coil QA systems support end-to-end testing for motor manufacturing, ensuring every coil meets safety and performance standards.

		Model	Armature Coil Test System
		Maker	ECG-KOKUSAI
		Armature Coil Test System
		Automates insulation and winding checks for armature coils.
		Model	Stator Coil Test System
		Maker	ECG-KOKUSAI
		Stator Coil Test System
		Complete QA solution for stator coils in EV and industrial motors.