MCDW-20A (400V) Comprehensive Ground Grid Parameter Testing System

MCDW-20A (400V) Comprehensive Ground Grid Parameter Testing System

Model: MCDW-20A (400V) Quantity: 1 set Manufacturer: Hubei MECI Electric Power Equipment Co., Ltd

Category: High-Voltage Switch Series

Keywords: MCDW-20A (400V) Comprehensive Ground Grid Parameter Testing System

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Product Overview

Product Features

1. Measurements can be performed without shutting down the equipment, and frequency conversion technology eliminates power-frequency interference from the main power grid.

2. Measurement with different-frequency, low-current (0–20 A); the injected current frequency is adjustable within the range of 30 Hz to 70 Hz.

3. High-power variable-frequency power supply ensures isolation and maximizes current output.

4. The frequency-modulated voltage and current meter employs a digital bandpass filter and is equipped with a calibration device to ensure convenient and accurate measurements.

5. High-stability frequency signal source to ensure the accuracy of the entire testing process.

6. Repeatable measurements enhance measurement accuracy and save time and money.

7. Equipped with overvoltage, overcurrent, short-circuit, and overheating warning devices.

8. 32-bit microprocessor control, intelligent operation, and flexible, convenient handling.

9. Low-distortion interference, complete input/output isolation, safe and reliable

10. Unique instantaneous value control, with low waveform distortion and high control accuracy.

11. Extremely fast dynamic response: when the load changes from 0% to 100%, the steady-state response time is less than 0.1 seconds.

12. No radiated interference, low harmonic content, and special treatment to prevent interference.

13. Original imported Japanese Mitsubishi IGBT high-frequency inverter and core components, ensuring stable and reliable performance.

14. Output Voltage: Low Range: 0–200 V; High Range: 0–400 V, continuously adjustable

15. Frequency range: 30 Hz–70 Hz; frequency step: 1 Hz

16. Frequency stability: < 180 ppm

17. Power supply: AC 180–270 V, 50/60 Hz

 

 

Technical Specifications

Impedance measurement range: 0–1000 Ω; Resolution: 0.001 mΩ

Measurement error: ±(reading × 2% + 0.005 Ω)

Test current waveform: sine wave

Test current frequency: 30–70 Hz, in 0.5-Hz increments

Output current: 0–20 A, in 1 A steps; Maximum output voltage: 400 V

Measurement cable requirements: The cross-sectional area of the copper core in the current-carrying cable shall be ≥2.5 mm². 2 The cross-sectional area of the copper core in the voltage cable shall be ≥1.0 mm². 2

Power supply: AC 180–270 V, 50/60 Hz

External dimensions: 355 × 335 × 340 mm Instrument weight: 18 kg

This instrument is suitable for testing power-frequency grounding impedance and other power-frequency characteristic parameters of various grounding systems, as well as soil resistivity. It employs heterofrequency anti-interference technology, enabling accurate measurement of data at the power frequency of 50 Hz even in environments with strong interference. The maximum test current is 20 A, which prevents the potential of the grounding system from becoming excessively high during testing; moreover, it also features extremely

It boasts strong anti-interference capability, enabling measurements to be performed without interrupting power supply.

The measurement exhibits excellent power-frequency equivalence. The test current waveform is sinusoidal, with a frequency closely matching the power frequency, allowing measurements to be performed using either 11 single-frequency settings or 5 dual-frequency settings. Among these, the 49 Hz and 51 Hz single-frequency settings are very close to the power frequency, while the 49/51 Hz dual-frequency setting achieves an even closer approximation to the power frequency.

Strong anti-interference capability. This instrument employs the heterodyne measurement method and incorporates advanced software and hardware filtering techniques, resulting in exceptional anti-interference performance and ensuring stable, reliable test data.

High accuracy: the basic error is only 0.005 Ω, making it suitable for measuring large grounding grids with very low grounding impedance.

Powerful functionality: it can measure the grounding resistance of current stakes and voltage stakes, the grounding resistance of grounding grids, loop resistance, and soil resistivity. When equipped with a dedicated frequency-selective meter, it can also measure step voltage and touch voltage, as well as surface potential gradient. It boasts enhanced anti-interference capability and higher measurement accuracy.

MCDW-20A (400V) Comprehensive Ground Grid Parameter Testing System

MCDW-20A (400V) Comprehensive Ground Grid Parameter Testing System

Model: MCDW-20A (400V) Quantity: 1 set Manufacturer: Hubei MECI Electric Power Equipment Co., Ltd

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Tel： 86-13307164232

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