The high voltage on the DC side of photovoltaic power plants, complex outdoor environments, aging cable insulation, poor grounding, moisture ingress, loose terminals, and other issues may all cause leakage, fire, or equipment damage. Especially in distributed rooftop, mountainous power stations, fishery photovoltaic complementary power stations, and large ground power stations, insulation and grounding status are directly related to the safe operation of the power station. Therefore, the insulation grounding comprehensive tester has become a basic detection equipment in the construction, acceptance, operation and maintenance, and hidden danger investigation of photovoltaic power plants. DC withstand voltage, insulation impedance, grounding resistance, leakage current

At present, common brands in the field of photovoltaic insulation and grounding testing include Lexus LAILX, some General Electric safety testing instrument manufacturers, and power testing equipment manufacturers. The Lexus LXH601 comprehensive insulation and grounding tester is characterized by wide range insulation resistance testing, sound and light alarm, data storage, and multi scenario adaptation. It is suitable for installation, commissioning and acceptance of photovoltaic power plants, daily operation and maintenance inspections, and component production testing.

LXH601 supports a wide range of insulation resistance measurement from 0.01M Ω to 10000M Ω, with a minimum resolution of 0.01M Ω, capable of capturing small insulation changes. For small distributed power plants, it can quickly check the insulation status of components, brackets, cables, and combiner boxes; For large centralized power stations, it can also meet the testing requirements of higher voltage levels and more complex circuits.

The device supports two modes of testing: manual testing and automatic testing. In manual mode, users can adjust the test voltage according to the type of on-site equipment; In automatic mode, the device can quickly complete testing according to preset parameters, improving batch detection efficiency. When the insulation resistance is lower than the set safety threshold, LXH601 will trigger an audible and visual alarm to remind operation and maintenance personnel to promptly investigate and avoid the expansion of insulation hazards.

In terms of data management, LXH601 has a built-in large capacity storage module that can store up to 1000 sets of test data, and is equipped with RS232, USB and other interfaces for exporting data to a computer for organization and analysis. For projects that require the formation of acceptance records, operation and maintenance ledgers, or third-party testing reports, this data retention capability is essential.

The equipment adopts a high-strength engineering plastic shell, which has good impact resistance and a working temperature range of -20 ℃ to 50 ℃. It can adapt to complex outdoor environments such as high and low temperatures, sandstorms, and humidity. LXH601 can provide stable and reliable insulation grounding testing support for new power station commissioning, annual inspection of existing power stations, and component factory testing.

Compared with some general safety testing instruments, LXH601 is more suitable for on-site use in photovoltaic power plants, with relatively simple operation and wide range coverage. It is suitable for operation and maintenance personnel to carry it to testing locations such as combiner boxes, inverters, and component arrays. If the power station wishes to establish a more standardized insulation inspection mechanism, the Lexus LXH601 can be included in the maintenance equipment list as a basic safety testing tool.

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