Switch Dynamic Characteristic Tester

The MOEORW-W5128C Circuit Breaker Characteristic Tester (also known as HV Switch Mechanical Characteristic Tester or Switch Dynamic Characteristic Tester) is a multi-function intelligent testing device designed in accordance with GB1984-2014 "High-Voltage AC Circuit-Breakers" and DL/T846.3-2017 "General Technical Specifications for High-Voltage Testing Equipment – Part 3." This HV switch tester is applicable for mechanical dynamic characteristic parameter testing of all minimal-oil, bulk-oil, vacuum, SF6, and graphite-contact high-voltage circuit breakers within 6kV~500kV substations.

As a professional HV switch mechanical characteristic tester, it highly integrates three core units: embedded industrial control platform, high-power adjustable DC power supply, and multi-channel high-speed sampling. One single operation simultaneously acquires all parameters including open/close time, synchronization, bounce, stroke, speed, and coil current, while generating dynamic waveform graphs. Whether for GIS switchgear assemblies or outdoor pole-mounted switches, this switch dynamic characteristic tester delivers rapid and accurate diagnostics, serving as a core device for power preventive testing and switch fault troubleshooting.

Multi-function Integration: Simultaneously compatible with metallic contacts, graphite contacts, and closing resistor testing-one HV switch mechanical characteristic tester replaces multiple dedicated devices.

Rapid Deployment: Universal sensor mounting bracket design requires no tools for installation, with all wiring completed within 3 minutes on-site.

Data Security: Test data is automatically saved and retained even after power loss, supporting historical data retrieval and re-printing.

Access Control: Supports operator account login, enabling test accountability and traceability per power industry management requirements.

Large-Screen Display: 9-inch color touchscreen displaying waveform curves simultaneously on one screen, enabling intuitive analysis without a computer on-site.

Scenario 1: Substation Preventive Testing
During annual maintenance of 220kV and above substations, this HV switch tester must complete mechanical characteristic testing of multiple circuit breakers within the busbar outage window. The instrument's design protocol of grounding before connecting break lines effectively addresses induced high voltage across breaks, ensuring equipment and personnel safety. The built-in anti-interference circuitry guarantees stable signal acquisition even in dense GIS equipment areas, with test data serving as the core basis for equipment condition assessment reports.

Scenario 2: Switchgear Factory Outgoing Inspection
Circuit breaker manufacturers must test each switch's open/close time, synchronization, bounce, and speed before shipment. This switch dynamic characteristic tester supports creating new switch profiles and customizing speed definition formulas to accommodate differentiated parameter requirements of various product models. Combined with batch export via USB, inspection data can be quickly archived, enabling traceable product quality management.

Scenario 3: Line Fault Emergency Repair
When a switch fails to operate, misoperates, or produces abnormal noise, field repair personnel need to quickly identify the cause. This circuit breaker characteristic tester can adopt external trigger mode, independent of the instrument's internal power supply, directly collecting voltage signals from the switch's own operating circuit for timing, compatible with AC-operated and permanent-magnet mechanism switches. In manual trigger mode, extending the acquisition time beyond 5 seconds captures operating waveforms even without electrical control connection between the switch mechanism and the instrument, providing first-hand data for fault diagnosis.

Scenario 4: Graphite Contact Special Testing
For Siemens series graphite-contact circuit breakers, this switch tester is equipped with dedicated graphite break interfaces, requiring correct graphite model selection in settings before entering the test interface. During testing, it outputs 10A/20A constant current and precisely determines open/close timing by detecting contact voltage drop changes. After closing, the switch should be opened promptly to prevent prolonged current output causing equipment heating-a detail that reflects this HV switch mechanical characteristic tester's comprehensive consideration of on-site operational safety.

Scenario 5: Low-Voltage Operation Verification
According to power regulations, a circuit breaker coil's reliable operating voltage must satisfy requirements of no less than 30% and no more than 65% of rated voltage. This switch dynamic characteristic tester supports manual/automatic low-voltage test modes. After selecting the voltage value in the settings menu, the instrument automatically outputs and steps up voltage progressively, automatically determining the operating voltage value based on break state changes-all without external voltage regulators, significantly improving test efficiency.

Scenario 6: Reclosing Performance Verification
For line switches equipped with reclosing functionality, this HV switch tester supports three reclosing sequences: close-open, open-close, and open-close-open. Users simply set the arcing time or dead time in the menu, and the instrument automatically completes the entire reclosing cycle test while recording time parameters at each stage, comprehensively verifying the reclosing device's operational accuracy.

To ensure this HV switch mechanical characteristic tester can quickly complete various circuit breaker testing tasks on-site, the instrument is equipped with a comprehensive set of professional accessories. All components have undergone strict selection and testing to ensure perfect compatibility with the host system-plug and play.

Standard Accessories List:

Host and Basic Units: Host unit ×1, portable instrument case ×1, accessory case ×1.

Break Test Cables: Break test leads ×12 (yellow, green, red, black four-color set for connecting moving contacts and common ground-yellow corresponds to A1 main break, while stationary contacts are shorted together and connected to black) + shorting leads ×1 set. All test leads use high-insulation-grade materials with sufficient length to meet on-site wiring needs, ensuring stable signal transmission.

Control Cables: Internal trigger control cable ×1 (red, green, black three-core, corresponding to close, open, and common terminal respectively, connected to the "Internal Trigger" aviation plug on the panel), external trigger control cable ×1, energy storage control cable ×1. The internal trigger control cable is used for driving switch open/close operations using the instrument's internal DC6~270V adjustable power supply; the external trigger control cable is used for capturing voltage signals from the switch's own operating circuit, compatible with AC-operated and permanent-magnet mechanism switches.

Grounding and Power: Grounding cable ×1 (ground the instrument before connecting any test leads; remove break leads and sensors before removing the ground cable last), 10A power cable ×1, 10A fuse tubes ×4.

Sensor System:

50mm Linear Sensor ×1: Suitable for vacuum switches (e.g., ZN28, ZN63/VSI with exposed moving contacts). The electronic ruler must be installed perpendicular to the moving contact, with approximately 15mm of buffer stroke reserved. Resolution: 0.1mm.

345° Rotary Sensor ×1: Suitable for SF6 switches and sealed VS1/VD4 switches, installed on the crank arm (main shaft) at the sides of the switch. The sensor pointer tail should point toward the red zone, with the recommended installation angle maintained at 160°~200°. Resolution: 0.08°.

Universal Sensor (Accelerometer) ×1: Mounted on the breaker's moving contact stroke rod via magnetic attraction, suitable for linear motion measurement. Range: 0~300mm.

Universal Mounting Bracket and Dedicated Multi-Function Mounting Adapters ×1 set: For securing various sensors, enabling extremely convenient tool-free installation.

Printing and Storage: High-speed thermal printer paper rolls ×2 (store in a cool place away from heat and moisture to maintain print quality), USB flash drive ×1 (for data export and firmware upgrades).

Tools and Documents: Screwdriver ×1, factory inspection certificate ×1, certificate of conformity ×1, product operation manual ×1.

Optional Accessories (available for separate ordering):

Laser Velocity Sensor: Speed measurement range 0.01~15.00m/s, suitable for test scenarios requiring higher precision.

100mm/225mm Linear Sensor: Suitable for circuit breakers with larger stroke where the standard 50mm sensor is insufficient.

RS232 Host Computer Communication Kit: For connecting to a PC for data analysis and report generation.

Closing Resistance Test Module (optional): Supports 3/6-channel closing resistance measurement, range 20Ω~10kΩ, accuracy 3%±1 digit.

Graphite Contact Test Module (optional): Supports 3/6-channel graphite contact measurement with selectable 10A/20A test current.