Gi6805 Grounding Connection Device Parameters Tester
In power systems, earth-grid resistance is commonly tested using the power-frequency, high-current method. To limit interference from the operating power grid and improve measurement accuracy, test
GI6805 Grounding Connection Device Parameters Tester
In power systems, earth-grid resistance is commonly tested using the power-frequency, high-current method. To limit interference from the operating power grid and improve measurement accuracy, test procedures specify a test current of at least 30A for this method. Conventional equipment can therefore be cumbersome to use, with a complex testing process and lengthy test times.
Product Details
Instructions
In power systems, earth-grid resistance is commonly tested using the power-frequency, high-current method. To reduce interference from the operating power grid and improve test accuracy, procedures specify a test current of at least 30A. Conventional equipment can be cumbersome, and the testing process can be complex and time-consuming.
The HANDY Grounding Connection Device Parameter Tester uses a variable-frequency AC power supply and replaces the traditional frequency-transformer design, substantially reducing instrument weight. Digital signal processing helps avoid 50Hz frequency interference, enabling measurements without a power outage and supporting more accurate results. The instrument also simplifies the testing process.
This tester is designed to measure the ground resistance of different types of grounding devices, along with touch potential, step potential, voltage gradient, and soil resistivity. Depending on the application, it can be used to measure substation ground grids (4Ω), hydrothermal power plants, microwave stations (10Ω), and lightning rods (10Ω).
Features
- Measures grounding parameters including ground impedance, ground resistance, voltage gradient, touch potential, step potential, and soil resistivity for conventional ground-network testing.
- Provides an interfrequency test supply close to the frequency being measured, helping separate frequency-related and other interference for small-signal measurements.
- Offers high measurement accuracy and can be used to measure ground grids with very low ground impedance.
- Uses an all-electronic design without a working-frequency transformer, making the instrument compact and easy to carry.
- Automatically controls power boosting and completes data measurement and calculation, helping shorten test time and reduce workload.
- Stores current and voltage waveforms for analysis using the accompanying upper-computer software.
- The LCD displays the operating interface and test data for indoor and outdoor use.
- Built-in memory stores up to 1,000 sets of data and retains them when the instrument is powered off.
- A high-speed thermal printer prints test data.
- Instrument software can be upgraded using a USB flash drive.
Specifications
- Power supply: Three-phase 380V ±10%, 47–63Hz; power: 30KVA
- Output voltage: 0–400V (RMS)
- Output current: 0–50A (RMS)
- Testing time: 30s
- Testing power frequency: 42–58Hz, multi-frequency measurement
- Measurement range: 0–100Ω; resolution: 1mΩ
- Measurement accuracy: ±(1% ± 5mΩ)
- Anti-jamming capability: Operates steadily and accurately when the ratio of instrument output signal to interference signal is 1:50.
- Dimensions: 613mm × 488mm × 234mm
- Working environment: Temperature: -20–50°; humidity: ≤90%RH
- Weight: 39Kg
