Product Introduction
The UHV-801 Grounding Grid Earth Resistance Tester by Wuhan UHV Power Technology Co., Ltd. is designed for testing large-scale ground networks. It utilizes a variable frequency AC power supply and advanced computer processing to enhance test precision and reduce labor intensity. The tester is suitable for measuring power frequency grounding impedance, contact voltage, step voltage, and soil resistivity across various grounding devices.

Product Features
1. Equivalence: The tester measures power frequency with a sine wave, using frequencies of 45 Hz and 55 Hz.
2. Anti-Interference: It employs different frequency methods and modern filtering technology for high anti-interference performance.
3. Precision: Offers a basic error of only 0.005Ω, suitable for small grounding impedance measurements.
4. Versatility: Capable of measuring current pile, voltage pile, grounding resistance, step voltage, and contact voltage.
5. Ease of Use: Features a Chinese menu for direct display of results.
6. Minimal Wiring: Requires no large current wire.

Technical Parameters

• Measurement Range: 0～200Ω (including current pile impedance)
• Resolution: 0.001Ω
• Measurement Error: ±(readings×1%+0.005Ω)
• Maximum Output Voltage: AC 400V (dual-frequency, sine wave)
• Maximum Output Current: AC 5A (dual-frequency, sine wave)
• Output Gear: 9 gears, ranging from 1A to 5A
• Anti-Interference Ability: Anti-power frequency 50Hz voltage 10V
• Measurement Line Requirements: Copper core of current wire ≥ 1.5mm², voltage line ≥ 1.0mm²
• Power Supply: AC220V±10%, 50Hz
• External Dimension: 295×340×310mm³
• Instrument Weight: 30kg