
A customer from Wuhan, Hubei, ordered a set of DEMIKS Power digital withstand voltage partial discharge test
If you need a trusted brand for a High Voltage Circuit Breaker Characteristic Analyzer, look no further than DEMIKS. Unlike many other suppliers within the country, DEMIKS as one of the top manufacturers and suppliers in China provides high-quality analyzers and detailed characteristics of your circuit breaker. With unparalleled trust worldwide, DEMIKS products are designed to meet the utmost industry requirements.
Flexibility in Use: The DJD-309 Switchgear Grounding Resistance Tester can be configured for universal safety parameter assessment.
High Test Current Capability: A rigorous safety and resistance testing can be performed with this tester because test current is as high as 30A.
Time-Setting Functionality: Incorporating a timer, the instrument offers the possibility to set a timing value. Activation of the apparatus initiates a countdown, and upon reaching the designated time, the device resets to a base state without further action.
| Item | Details |
|---|---|
| Output Voltage | AC 6V |
| Output Current | AC 30A (when the load is less than 200mΩ); AC 10A (when the load is greater than 200mΩ) |
| Test Resistance | 20 - 200mΩ: 30A ±5%; 200mΩ - 600mΩ: 10A ±5% |
| Test Resistance Range | 20 - 600mΩ ±5% (±3 digits) |
| Timing Range | 1 - 99 seconds ±5%; Manual control |
| Operating Voltage | AC 220V±10% 50Hz |
Comprehensive Compatibility:All brands and origins of SF6 switches, GIS systems, vacuum, and oil switches can have their mechanical features tested with absolute precision.
Efficient Data Collection and Storage: Mechanically produced data and waveforms can be contained and timestamped during collection using a real-time clock, stored on-site.
Enhanced Data Management:Detailed reports from tests can be compiled through PC software alongside customizable acceleration and deceleration for switch models during set parameters.
Advanced Testing Capabilities:Applicable for use in high-voltage areas, precise measurements are guaranteed with strong anti-interference provisions.
| Category | Parameter Items | Range/Specification | Resolution | Error/Requirement |
|---|---|---|---|---|
| Operating Environment | Input Power | 220V±10% 50Hz±10% | - | - |
| Atmospheric Pressure | 80 - 106 kPa | - | - | |
| Temperature | -10 - 40°C | - | - | |
| Humidity | ≤50%RH | - | - | |
| Safety Performance | Insulation Resistance | >2kΩ | - | - |
| Dielectric Strength | 1.5kV power frequency withstand voltage for 1 minute | - | No flashover or arcing | |
| Basic Parameters | Time (200ns range) | 200.00ns | 0.01ns | ±0.01ns±2 digits |
| Time (2000ns range) | 2000.0ns | 0.1ns | ±0.1ns±2 digits | |
| Time (20000ns range) | 20000ns | 1ns | ±1ns±2 digits | |
| Speed (0 - 2m/s) | 20.00m/s | 0.01m/s | ±0.1m/s±1 digit | |
| Speed (>2m/s) | 20.00m/s | 0.01m/s | ±0.2m/s±1 digit | |
| Stroke Parameters | Vacuum Circuit Breaker | 50.0nm | 0.1nm | Not specified |
| SPB Circuit Breaker | 300.0nm | 1nm | ±0.1nm±1 digit | |
| Oil - Immersed Circuit Breaker | 600.0nm | 1nm | ±0.1nm±1 digit |
Powerful Embedded System: Features a 9-inch touch screen with fast boot-up, Windows OS, and multi-language support.
Integrated Power Supply: Voltage output of DC6-270V with adjustable 20A current. Also includes low current testing capability.
Comprehensive Data Handling: Storage capacity of 30,000 test groups. Other ports include USB, RS232, and Wi-Fi.
Reliable Performance: Guaranteed anti-interference operation in 500KV substations.
| Category | Specific Items | Details |
|---|---|---|
| Time Measurement | 12 - way Inherent Opening (Closing) Time | - |
| Intra - phase Non - synchronism during Opening (Closing) | - | |
| Difference in Inter - phase Non - synchronism during Opening (Closing) | - | |
| Bounce Time (Number of Bounces) during Closing (Opening) | - | |
| Non - synchronism Test Range | 0.10ms - 99ms, Resolution: 0.01ms | |
| Internal Trigger Test Range | 0.10ms - 999ms, Resolution: 0.01ms; 1000ms - 9999ms, Resolution: 0.1ms; 10000ms - 200000ms, Resolution: 1ms | |
| External Trigger Test Range | 0.01ms - 200s | |
| Accuracy within 1000ms | (0.05% ± 1 digit) | |
| Speed Measurement | Instantaneous Opening (Closing) Speed | - |
| Average Speed over a Specified Time Period (Stroke Segment or Angle Segment) | - | |
| Speed Measurement Range | 1mm Sensor: 0.01 - 25.00m/s; 0.1mm Sensor: 0.001 - 2.50m/s; 345° Angle Sensor: 0.01 - 25.00m/s; Laser Sensor: 0.01 - 15.00m/s | |
| Stroke Measurement | Moving Contact Stroke (Stroke) (3 - way Stroke Measurement Optional) | - |
| Contact Stroke (Opening Distance) | - | |
| Overtravel | - | |
| Overshoot Stroke or Rebound Stroke | - | |
| Measurement Range | Linear Sensor | 50mm, Measurement Range: 0 - 50mm, Resolution: 0.1mm |
| Rotary Sensor | 345°, Measurement Range: 0 - 1000mm, Resolution: 0.08°. This sensor has a 15 - degree invalid area. When installed, the effective area of the sensor can be seen on the instrument, and the value is preferably displayed between 160 - 200 degrees. | |
| Accelerometer 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 Supply Output | - | DC6 - 270V Continuously Adjustable, DC24V ≤ 15A (Short - term), DC220V ≤ 20A (Short - term) |
| External Trigger Voltage | - | AC/DC10 - 300V, Current ≤ 120A |
| Isolator Switch Measurement Range | Voltage Output | DC6 - 270V (Adjustable) |
| Power Supply Output Time | 0.01 - 20s (Configurable) | |
| Maximum Acquisition Time for Breaker Contact Signals | 200s | |
| Measurable Items | Closing and Opening Times of Breaker Contacts, Three - phase Non - synchronism, Bounce Time and Number of Bounces |
Integrated Power Supply: Programmable DC6 - 270V, 20A, accommodates for a wider range of testing.
Comprehensive Sensor Suite: Linear, rotation, universal as well as optional laser sensors.
Extensive Compatibility: Compatible with all SF6, GIS, vacuum, and oil switches regardless of the region.
Data Storage & Connectivity: Maintains 30,000 test groups alongside USB, RS232 and optional WiFi.
High-Performance Embedded System: Enables Windows OS operations and fast booting. Also supports tri-lingual functions alongside a 9 inch touch screen.
To safeguard contemporary electric networks, high-voltage circuit breakers are critical for halting fault currents like short circuits. They are tailored to operational requirements, conditions of the environment, and criteria of performance. This article examines HV circuit breakers and their types, mechanisms and applications which will be useful for professionals and technicians in the industry to make reasoned decisions for different situations.

A customer from Wuhan, Hubei, ordered a set of DEMIKS Power digital withstand voltage partial discharge test

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