High-precision circuit breaker analyzer and timer for measuring opening/closing time, contact synchronization, travel, velocity, and coil current. Features internal adjustable DC power source, multi-channel sampling, and compliance with IEC 62271-100 and IEEE C37.09 standards.

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Circuit Breaker Analyzer & Timing Test Equipment

The circuit breaker analyzer is a specialized diagnostic system engineered to evaluate the mechanical performance and dynamic motion characteristics of high-voltage and medium-voltage circuit breakers.

Mechanical failures—such as contact misalignment, mechanism binding, abnormal operating speeds, or coil degradation—account for a significant portion of circuit breaker faults in electrical substations. By recording opening and closing time, travel distance, velocity, contact bounce, and operating coil current, this equipment provides quantitative data to ensure grid switching protection.

Operating as a high-precision circuit breaker timer, the analyzer captures millisecond-level contact actuation events across main and auxiliary contacts. It supports testing on vacuum, SF6, oil, and air-blast circuit breakers during factory acceptance testing, substation commissioning, and routine preventive maintenance.

For detailed device specifications, sensor setups, and software capabilities, you can view our dedicated high voltage switch dynamic characteristics tester page.

Technical Specifications & Compliance Standards

The table below outlines the core technical measurement specifications and applicable international standards:

Parameter / Feature	Technical Specification Range	Applicable Testing Standards
Time Measurement Range	0.1 ms to 9999.9 ms (Resolution: 0.1 ms)	IEC 62271-100 / IEEE C37.09
Time Accuracy	±0.1% reading ±0.1 ms	IEC 62271-1 / DL/T 846.3
Velocity & Travel Range	Travel: 0 to 1000 mm | Velocity: 0 to 20.0 m/s	IEC 62271-100 Clause 6
Displacement Accuracy	±1% F.S. ±1 digit	DL/T 846.3-2016
Coil Current Range	Direct measurement up to 20 A DC	IEEE C37.09 Clause 5
Contact Channels	Up to 12 main contact channels and auxiliary channels	IEC 62271-1 Annex0
DC Power Supply Output	Built-in adjustable DC 30 V to 270 V / 20 A source	DL/T 846.3 Clause 4

Core Technical Features

1. High-Precision Multichannel Timing & Synchronization

The system samples contact transitions across up to 12 channels simultaneously. It captures main contact opening/closing times, auxiliary contact status, phase synchronization error (inter-phase non-simultaneity), and contact bounce duration in a single test sequence.

2. Motion Profile & Velocity Analysis

Utilizing linear, rotary, and optical resistance displacement sensors, the analyzer records complete travel-time trajectories. Software algorithms compute key mechanical indicators, including total travel, over-travel, rebound distance, opening velocity, and closing velocity across user-defined calculation intervals.

3. Integrated Adjustable DC Control Source

Features an internal regulated DC power supply capable of generating variable control voltages (30 V to 270 V DC). This permits automatic minimum pickup voltage testing (undervoltage trip test) for opening and closing coils without requiring external power supplies.

4. Coil Current & Dynamic Waveform Acquisition

Monitors control circuit coil current profiles in real time. The resulting current-time curves assist engineers in diagnosing mechanical latching resistance, solenoid coil insulation degradation, or auxiliary switch timing faults before mechanical linkage failure occurs.

Primary Application Scenarios

Substation Commissioning & Routine Maintenance

• Commissioning Audits: Establishing baseline mechanical performance parameters for newly installed high-voltage breakers prior to grid energization.

• Condition-Based Maintenance: Periodic verification of timing, speed, and contact synchronization on SF6 and vacuum switchgear.

Circuit Breaker Manufacturing & Overhaul

• Factory Acceptance Testing (FAT): Quality verification of mechanical alignment, travel limits, and contact timing during assembly.

• Post-Repair Diagnostics: Assessing contact bounce, velocity profiles, and trip coil currents following interrupter replacement or mechanism overhaul.

Industrial Facilities & Power Utilities

• Industrial Switchgear Inspection: Evaluating vacuum circuit breaker performance in steel plants, mining facilities, and petrochemical power distribution grids.

• Third-Party Diagnostic Services: Generating accredited diagnostic reports using traceable time, travel, and current records.

Functional Capabilities

Measures opening time, closing time, inter-phase synchronization, bounce time, stroke length, over-travel, velocity, minimum trip voltage, and coil current profiles. The instrument features a sunlight-readable display, built-in thermal printer, internal database storage, USB output, and a rugged field-transportable enclosure.

To review additional switchgear and substation diagnostic instruments, inspect our full range of circuit breaker testing equipment.

Company Capabilities & Quality Assurance

Weshine Electric is a specialized manufacturer of high-voltage diagnostic systems and power testing solutions. Operating under strict ISO quality management frameworks, we supply electrical test equipment to power utilities, transformer manufacturers, industrial plants, and independent testing laboratories globally.

Our product development focuses on measurement accuracy, field operational safety, and compliance with international standards such as IEC and IEEE. Backed by in-house R&D, rigorous factory calibration, and comprehensive technical support, we deliver reliable diagnostic tools to ensure the operational stability of power system assets.

To evaluate complete high-voltage diagnostic lineups, explore our solutions as an Electrical Testing Equipment Supplier.