Specifying custom high voltage circuit breaker motion speed tester supplier for Wholesale and OEM Orders

Distributors and importers routinely lose launch windows because off‑the‑shelf motion‑speed testers cannot hold timing tolerance once the test voltage exceeds 250 kV; the drift shows up as a 0.3 ms spread on the contact‑travel curve and forces a re‑run of the entire qualification batch.

A purpose‑built tester isolates the high‑voltage circuit from the measurement electronics, uses a calibrated linear encoder mounted on a rigid aluminium frame, and captures the breaker’s travel at 100 kS/s; the tooling cost is front‑loaded, so unit price drops sharply once the order passes 30 units, while lead time compresses from 12 weeks to 6 weeks.

How It Performs in Use

Working Principle

The tester clamps the breaker’s moving contact to a precision carriage driven by a servo‑actuated lead screw; a non‑contact optical encoder reads carriage position with 0.5 µm resolution, while a high‑voltage divider measures the arc voltage across the contacts. Data streams into a real‑time acquisition board that timestamps each sample to 0.1 ms, producing a travel‑versus‑time curve that meets IEC 62271‑100 timing‑characteristic requirements.

Specification Range and Customisation Limits

Finish and Colour Options

Working as a Production Partner, Not a Catalogue Supplier

OEM/ODM Service Scope

We allocate a dedicated project engineer who reviews the breaker’s mechanical envelope, defines the carriage travel range, and locks the encoder mounting pattern before any metal is cut; tooling amortisation is spread over the forecast volume, so a 20‑unit run carries a higher per‑unit cost than a 100‑unit run, but the lead‑time advantage appears once the first article passes the factory acceptance test.

Standard Encoder Package

• Incremental optical encoder, 20 µm resolution
• Calibration interval 12 months
• Unit cost baseline

High‑Resolution Encoder Package

• Absolute optical encoder, 0.5 µm resolution
• Calibration interval 24 months
• +18 % unit cost, reduces timing spread by 60 %

Quality Control and Batch Consistency

QC Steps

Every batch undergoes a three‑stage gate: (1) dimensional verification of the carriage travel against a laser tracker, (2) high‑voltage withstand test at 1.2 × rated voltage for 60 seconds, (3) timing repeatability run of 500 cycles with the encoder locked to a reference clock; any unit that exceeds 0.12 ms spread is rejected and the batch root‑cause is traced to the encoder mounting torque.

Setup, Use and Replacement Parts

Maintenance Schedule

Calibrate the encoder against the reference clock every 12 months or after 5 000 test cycles, whichever comes first; clean the carriage rails with isopropyl alcohol and lint‑free wipes to prevent particulate buildup that can add 0.02 ms jitter; replace the high‑voltage divider probe after 2 000 hours of operation or if the insulation resistance drops below 10 GΩ.