ETCR specializes in high-end intelligent power testing instruments, including earth resistance testers, clamp meters, and insulation resistance testers for industrial applications.
Guangdong ETCR Electronic Technology Co., Ltd. is a professional manufacturer dedicated to the research, development, and production of intelligent power testing and control instruments. Known for its precision and reliability, ETCR offers a comprehensive range of measurement tools including non-contact earth resistance testers, high-voltage insulation resistance meters, clamp leakage current meters, and phase detectors.
Widely used in electric power, telecommunications, meteorology, and industrial maintenance, ETCR products are designed to ensure safety and accuracy in complex electrical environments. The company emphasizes technological innovation to solve difficult measurement problems, such as online monitoring of high-voltage transmission lines and ground resistance testing in varied soil conditions.
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'OL' stands for 'Over Limit.' It typically indicates that the measured value exceeds the currently selected range of the instrument, or that the circuit is open (infinite resistance).
ETCR testers are factory calibrated. For field verification, many models include a standard resistance loop (test ring). If precise recalibration is needed, the device should be sent to an authorized service center.
It depends on the specific model. Some ETCR models are designed specifically for high voltage (e.g., up to 60kV) and include insulation rods. Standard low-voltage clamp meters must not be used on bare high-voltage arweinyddion.
Monitoring software often comes on a CD included with the product kit. You may also find downloadable versions on the official ETCR websafle o dan yr adran cymorth cynnyrch.