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The HZRC300 Electric Clamp-On Earth Resistance Tester is a versatile and advanced tool used for measuring ground resistance, loop resistance, and other electrical parameters in various industries such as power, telecommunications, meteorology, oil fields, construction, and industrial electrical systems. Unlike traditional methods, this clamp-on tester allows for quick and safe measurements without the need to disconnect the grounding wire or use auxiliary electrodes, making it ideal for complex or hard-to-reach environments.
Key features include:
- **Model Number:** L747 HZRC300
- **Control Type:** Manual Control
- **Power Source:** 6VDC (4 x AA Alkaline Batteries)
- **Voltage Range:** 15V / 100V / 300V / 600V
- **Capacitance Range:** 40Hz – 100kHz
- **Trademark:** Huadian
- **Origin:** Dongguan, China
**Additional Specifications:**
- **Display:** Digital
- **Weight:** 1160g (with batteries)
- **Current Range:** 0.0–20.0 A
- **Resistance Range:** 0.01–1200 Ω
- **Inductance Range:** 9.999 Hz – 9.999 MHz
- **Transport Packaging:** Carton Box with Foam Inside
- **HS Code:** 9030339000
This high-performance device is designed for accuracy, reliability, and ease of use. It offers automatic range shifting, dual insulation protection, and a large LCD display for clear readings. The built-in alarm system alerts users when resistance values exceed set thresholds, and it can detect interference signals with visual and audio indicators.
Technical Highlights:
- **Resistance Accuracy:** ±1% ±0.01Ω
- **Resolution:** 0.001Ω
- **Alarm Settings:** 1–199Ω
- **LCD Size:** 47mm × 28.5mm
- **Clamp Size:** 65mm × 32mm
- **Operating Temperature:** -20°C to 55°C
- **Humidity Range:** 20%RH to 90%RH
- **Measurement Frequency:** >1kHz
- **Current Frequency:** 50/60Hz (Auto)
- **Battery Life:** Up to 30 hours continuous use
- **Auto Power-Off:** After 5 minutes of inactivity
- **RS232 Interface (Optional):** For data transfer to a computer
The HZRC300 comes with a meter, test ring, and a protective case, ensuring convenience and portability. It meets international safety standards including IEC1010-1 and IEC1010-2-032, with a pollution level of 2 and CAT III (600V) rating.
Whether you're working in an industrial setting or on-site for maintenance, the HZRC300 provides fast, accurate, and reliable earth resistance measurements, making it an essential tool for any electrician or technician.
July 18, 2025