Circuit Breaker Dynamic Characteristic Analyzer

The MOEORW-WKG50 is a portable testing instrument specifically designed for mechanical characteristic detection of high-voltage circuit breakers. In the industry, it is also commonly referred to as the High-Voltage Switch Mechanical Characteristic Tester, Circuit Breaker Dynamic Characteristic Analyzer, Switch Mechanical Characteristic Tester, High-Voltage Circuit Breaker Tester, Switch Operating Characteristic Tester, or High-Voltage Switch Comprehensive Tester. The product is applicable for precise measurement and waveform analysis of critical parameters including opening/closing time, speed, travel, bounce, coil current, and operating voltage for vacuum circuit breakers, SF6 circuit breakers, GIS switchgear, and oil circuit breakers. It is widely used in power system maintenance, switch manufacturer factory testing, substation preventive testing, research institute teaching and research, and third-party inspection agencies.

1. Comprehensive Test Parameter Coverage
This High-Voltage Switch Operating Characteristics Tester can simultaneously complete measurement and waveform recording of all the following parameters:

• Time Parameters: Inherent opening time and closing time for 12 breakers, same-phase synchronism, and inter-phase synchronism; close-open time (dead time), open-close time (current-free interval time), open-close-open time, and segment speeds for each phase.
• Bounce Characteristics: Closing bounce time, bounce count, bounce process, and bounce waveform for each breaker, intuitively reflecting contact stability.
• Speed Parameters: Opening speed at separation, closing speed at contact, and maximum speed, with complete time-travel characteristic curves.
• Travel Parameters: Total travel, open gap, over-travel, and rebound amplitude, comprehensively evaluating the switch's mechanical motion trajectory.
• Current Parameters: RMS current values and real-time current waveforms for opening and closing coils, aiding in the assessment of coil and trip mechanism status.
• Operating Voltage: Automatically completes low-voltage operating tests and precisely measures the circuit breaker's minimum operating voltage value.
• Energy Storage Motor: Records energy storage process current curves, energy storage time, and energy storage current to evaluate the health of the energy storage mechanism.
   

2. High-Precision Wide-Range Sampling System
As a professional Circuit Breaker Dynamic Characteristic Analyzer, its sampling performance directly determines the reliability of test conclusions:

• Time Sampling Range: 0.1～64000ms, resolution 0.1ms, accuracy 0.1%±0.1ms
• Current Resolution: 0.01A, accuracy 0.5%±0.01A
• Travel Test Range: 0.1～1000mm (resolution 0.2mm for travel >400mm, resolution 0.1mm for travel <400mm), accuracy 0.5%±0.1mm
• Speed Test Range: <25m/s, resolution 0.01m/s, accuracy 0.5%±0.01m/s
• Sampling Rate: Up to 10kHz/s, ensuring no loss of waveform details during fast action processes

All accuracy specifications above have been verified by third-party calibration from the China Electric Power Research Institute or provincial metrology institutes, and factory calibration certificates traceable to national standards are provided, ensuring that data from every Switch Mechanical Characteristic Tester is well-documented and reliable.
 

3. Strong Anti-Interference Design for Harsh Field Environments
Adopting fully isolated floating technology and multi-stage electromagnetic shielding measures, the instrument meets on-site testing requirements for substations of 500kV and above. Even in harsh environments such as strong transient electromagnetic fields generated by switch operations and energized bypass busbars, this High-Voltage Circuit Breaker Tester maintains stable and reliable data with no drift or jumping in measurement results. The design has passed GB/T 17626 electromagnetic compatibility series standard tests, ensuring normal operation under interferences including power frequency magnetic fields, burst pulses, and electrostatic discharge. This is the core reason why substation users choose this Switch Operating Characteristic Tester.

4. Built-in High-Power Adjustable DC Operating Power Supply
The instrument integrates a digitally controlled power supply with continuously adjustable DC 0～270V and 20A output, which can directly serve as the circuit breaker opening/closing operating power supply without the need for external voltage regulators or DC panels. The built-in power supply of this High-Voltage Switch Comprehensive Tester features:

• Automatic low-voltage operating test function: Automatically reduces voltage according to preset steps and directly outputs the operating voltage value
• Independent energy storage motor power supply and waveform recording: Can drive the energy storage motor and simultaneously record current curves
• Multiple protections: Over-current, short-circuit, and over-temperature protection, ensuring safety of both the equipment and the switch under test
   

5. Multiple Trigger Modes and Universal Sensor Compatibility
Supports three startup modes: internal trigger (programmed operation), external trigger (external contact signal), and sensor trigger (travel sensor induction startup), adapting to different switch operating mechanisms and control circuit wiring methods. This High-Voltage Switch Mechanical Characteristic Tester comes standard with universal sensors (applicable to most switch pull-rod interfaces), linear sensors, and digital sensors, with optional rotary sensors (one of two types), and a reserved interface for laser sensors. Users can flexibly select according to field conditions without the need for custom tooling, significantly reducing on-site adaptation difficulty.

6. Embedded Industrial Control Platform and Large Storage Capacity
The host adopts an embedded PC-104 industrial computer architecture, offering industrial-grade stability and fast data processing capability. This High-Voltage Switch Operating Characteristics Tester features 2GB of onboard storage, capable of storing tens of thousands of test data sets, and supports external USB drive expansion and USB data synchronization. Data is managed in a tree directory structure, allowing classification and storage by substation name, voltage level, line number, test date, and category (factory/preventive/post-maintenance), making retrieval, comparison, and archiving extremely convenient.

7. Rich Connectivity and Data Upload Capabilities
Standard USB and RS232 dual communication interfaces, supporting PC connection for real-time testing or data import/export

Bundled "OBA Data Management Software" (Windows version), enabling envelope analysis, speed definition editing, and standardized test report generation from test data on a computer

Supports classic Bluetooth or WiFi wireless communication (one of two types), enabling on-site data viewing and control via mobile devices such as phones and tablets

Communication protocols strictly follow State Grid informatization specifications, allowing test data to be directly uploaded to the State Grid E-Infrastructure System and provincial company data platforms, meeting group-level unified management requirements. This is also an important factor why the Switch Mechanical Characteristic Tester is highly favored in power centralized procurement projects.

1. Substation Preventive Testing
In substations of 500kV and above voltage levels, regular mechanical characteristic tests are performed on high-voltage circuit breakers to evaluate the health status of the operating mechanism, identify potential hazards such as contact wear and mechanism jamming in advance, and ensure safe and stable power grid operation. This High-Voltage Switch Operating Characteristics Tester, with its excellent anti-interference performance, can perform stable measurements in strong electromagnetic field environments, delivering authentic and reliable data.

2. Switch Manufacturer Factory Quality Inspection
High-voltage switch manufacturers are required to test each circuit breaker's opening/closing time, synchronism, speed characteristics, and other parameters before product delivery, ensuring compliance with national standards and technical agreement requirements. This Circuit Breaker Dynamic Characteristic Analyzer supports multiple sensor configurations, adapts to different types of switches, offers high testing efficiency, and enables automatic data archiving for convenient quality traceability.

3. Post-Maintenance Operating Characteristic Verification
After major overhaul or replacement of the operating mechanism, circuit breakers require on-site testing to verify whether their operating characteristics have returned to acceptable ranges and to confirm maintenance quality. This Switch Mechanical Characteristic Tester provides detailed indicators including opening speed, closing speed, and bounce waveforms, helping maintenance personnel make precise judgments and avoid repeated power outages.

4. Low-Voltage Operating Characteristic Assessment
Under DC operating power supply voltage fluctuations, the circuit breaker's reliable operating capability at different percentages of rated voltage (such as 65%, 85%, 110%) is assessed. This High-Voltage Circuit Breaker Tester features a built-in digitally adjustable power supply that can directly output the required voltage, automatically complete low-voltage operating tests, and record the operating voltage value without the need for external voltage regulation devices.

5. Energy Storage Motor Performance Monitoring
By recording and analyzing the current curve of the circuit breaker's energy storage motor, the instrument determines whether the motor is overloaded, has inter-turn short circuits, or mechanical jamming, achieving forward-looking diagnosis of motor health status and avoiding open/close failure accidents caused by energy storage failure. This Switch Operating Characteristic Tester can independently drive the energy storage motor and simultaneously record waveforms, offering multi-functionality in a single unit.

6. Switch Mechanical Life Assessment
During product development or batch sampling inspection, continuous opening/closing operations are performed according to preset counts and intervals to verify the switch's mechanical durability. This High-Voltage Switch Comprehensive Tester can preset the number of operations (up to 10,000 times) and interval time, automatically execute the test, and print process records in real time, making it a powerful tool for type testing and sampling inspection.

7. Data Asset Management and Remote Centralized Control
With PC-side management software, on-site test data can be uploaded to the State Grid E-Infrastructure System or enterprise MES platform, achieving electronic equipment records, automatic test report generation, and remote data analysis, meeting the needs of group-level maintenance management. The communication protocol of this High-Voltage Switch Mechanical Characteristic Tester strictly follows State Grid specifications, ensuring seamless data interfacing.