Circuit Breaker (Switch) Test Instrument
LQHV-406 Circuit Breaker Analyzer | 800kV Double-Grounded Switch Tester
The LQHV-406 Circuit Breaker Analyzer is an industrial-grade testing solution for double-grounded high-voltage circuit breakers in substations up to 800kV. With 12-contact synchronous measurement and specialized graphite contact testing, it meets GB1984-2014 and DL/T 846.3-2017 standards for critical power system protection.
Technical Parameters
| Time measurement | 12 natural switching (closing) time |
| The opening (closing) phase is not at the same time | |
| The difference between different periods of switching (closing) | |
| Closing (opening) Bouncing time (number of bounces) | |
| Different testing range: 1ms ~ 99ms, resolution: 0.01ms | |
| Internal trigger test range: 1ms ~ 999ms, resolution: 0.01ms | |
| 1000ms ~ 9999ms, resolution: 0.1ms,10000ms to 200000ms Resolution: 1ms | |
| External trigger test range: 0.01ms ~ 200s | |
| Accuracy within 1000ms: 0.05%±0.1ms | |
| velocity measurement | instant separating (instant closing) velocity |
| Appointed time slot (stroke segment or angle segment) average | |
| velocity | |
| velocity measurement | Just minute (just combined) speed |
| Average speed for a specified period of time (stroke or Angle) | |
| Measuring range | 0.1mm sensor 0.01 ~ 20.00m/s |
| 345° Angle sensor 0.01 ~ 20.00m/s | |
| Laser sensor 0.01 ~ 15.00m/s | |
| Travel measurement | 3. Moving contact stroke (stroke) (optional for 3-way stroke measurement) |
| Contact stroke (open distance) | |
| Over travel | |
| Overshoot or rebound stroke | |
| Measuring range | Linear sensor: 50mm, measuring range: 0-50mm, resolution :0.1mm |
| Rotating sensor: 345°, measuring range: 0-1000mm, resolution: 0.08° | |
| The sensor has an invalid area of 15 degrees, and the effective area of the sensor can be seen in the instrument during installation, and the value displayed is about 160-200 degrees. | |
| Acceleration sensor measurement range: 0-300mm, resolution: 0.1mm | |
| Coil current | Maximum current 20A, resolution: 0.01A |
| Coil resistance measurement range | 0 ~ 2000Ω, resolution: 0.01Ω |
| Instrument power supply | AC220V ± 10%; 50Hz ± 10% |
| Dc power output | DC6 ~ 270V continuous adjustable, DC24V≤15A (short time), DC220V≤ 20A(short time) |
| External trigger voltage | 10.AC/DC10-300V, current ≤120A |
| Isolation switch measurement range | (1) Voltage output: DC6～270V(adjustable) |
| (2) Power output time: 0.01-20 seconds (configurable) | |
| (3) The maximum acquisition time of the fracture signal is 200 seconds | |
| (4) Can measure fracture closing, opening time, three-phase different periods, bounce time and number | |
| Mainframe volume | 400×263×175mm |
| Use environment | -20℃~+50℃ |
| Relative humidity | ≤90% |
Product Overview
Designed for modern high-voltage applications, the LQHV-406 delivers:
Double-ground testing - Measures 3 grounded circuits simultaneously
Graphite contact analysis - Specialized testing for 3 graphite contacts
Ultra-high voltage compatibility - Reliable operation in 800kV substations
Key Specifications
Measurement Channels: 12 contacts + 6 closing resistors + 3 graphite contacts
Voltage Range: DC20-265V adjustable (20A current)
Display: 8.4" sunlight-readable touchscreen (Windows OS)
Standards: GB1984-2014, DL/T 846.3-2017
Anti-Interference: Rated for 800kV substation environments
Data Storage: 30,000 tests (expandable via memory card)
Premium Features
1. Comprehensive Contact Analysis
Simultaneously measures:
12 metal contacts
6 closing resistors
3 graphite contacts (specialized testing)
3 double-grounded terminals
2. Industrial-Grade Design
Built for demanding environments:
800kV-rated anti-interference shielding
High-speed thermal printer
Military-grade connectors
3. Advanced Diagnostics
Includes:
Envelope curve generation (2-10 operation comparison)
Vibration frequency analysis
Low-voltage operation testing
4. Field-Ready Operation
User-friendly features:
Integrated power supply (no external source needed)
USB data export
Sunlight-readable 8.4" touchscreen
Applications
800kV substation maintenance
Graphite contact breaker testing
Double-grounded circuit analysis
SF6/GIS/vacuum/oil switch diagnostics
Why Choose the LQHV-406?
Specialized Testing: Unique double-ground and graphite contact capabilities
Ultra-HV Ready: 800kV anti-interference protection
Regulatory Compliance: Meets latest GB and DL/T standards
Note: Includes universal sensor kit - compatible with linear/rotary sensors.
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