In lightning protection engineering, the reliability of the grounding system is the key to ensuring the safe operation of buildings, power facilities, and communication equipment. Developed by Shanghai Shenggao Electric Technology Co., LtdSGDW-5AThe lightning protection earth network tester, with its advanced technical design and innovative functions, has become an important tool in the field of lightning protection detection. This article will discuss three aspects: functional characteristics, technological advantages, and application scenariosSGDW-5AConduct in-depth analysis of lightning protection earth network tester.

1、 Core function: Combining high precision and anti-interference ability

Multi band frequency conversion testing technology
SGDW-5AAdopting a new type of variable frequency AC power supply, the output frequency can be within45Hz/55HzThe49Hz/51HzWait for multiple sets of automatic dual frequency converters to switch between. This design effectively avoids the power frequency50HzTo ensure accurate measurement results even in strong electromagnetic environments such as substations and chemical plants, interference is necessary. For example, in a certain500kVIn the grounding grid test of the substation,SGDW-5ASuccessfully overcome the interference of surrounding high-voltage equipment and control the measurement error within±2%Within.

Wide range and high resolution
The impedance measurement range of this tester covers0Ωto200ΩWith a resolution of up to0.001ΩIt can accurately detect small changes in resistance. The measurement error formula is±(Reading)×2％+0.005Ω）It performs particularly well in low resistance measurements. For example, when testing the grounding resistance of a lightning rod,SGDW-5ACan accurately identify0.5ΩThe change in resistance provides a reliable basis for lightning protection design.

Intelligent data analysis and storage
SGDW-5ABuilt in microcomputer processing control system, capable of real-time display of measurement data and generation of test reports. Its data storage function supports1000The test records above the group level are convenient for subsequent traceability and analysis. In addition, the tester is also equipped withUSBInterface can quickly export data to a computer, further improving data processing efficiency.

2、 Technical Advantages: Innovative Design and Humanized Operation

One click operation and automated process
SGDW-5AAdopting a fully Chinese menu interface, operators can easily set test parameters, read data, and generate reports through touch screens or buttons. Its automated testing process reduces human error and improves detection efficiency. For example, in the lightning protection testing of a large chemical industrial park,SGDW-5AThe automation function of reduces the single point testing time to3Minutes, overall detection efficiency improvement50%The above.

Safety protection and portability design
The tester is equipped with overload protection, short circuit protection, and leakage protection functions to ensure the safety of operators and equipment. Its external dimensions are440×350×210mmWeight only10kgEasy to carry to the site. In addition,SGDW-5APowered by rechargeable lithium batteries, it can work continuously on a single charge8More than hours, meeting the needs of long-term outdoor testing.

Environmental adaptability and durability
SGDW-5AThe working temperature range is-10℃to+50℃It can operate stably in harsh environments. Its shell is made of high-strength engineering plastic, which has good dustproof and waterproof performance, and the protection level reachesIP54In the lightning protection inspection of a wind farm in a certain mountainous area,SGDW-5ASuccessfully cope with low temperature, high humidity, and sandstorm environments, demonstrating excellent durability.

3、 Application scenario: A lightning protection detection solution covering the entire industry

power industry
SGDW-5AIt can test the grounding resistance of substations, power plants, and transmission lines to ensure the lightning protection safety of the power system. For example, in a grounding grid renovation project at a nuclear power plant,SGDW-5ASuccessfully detected areas with excessive grounding resistance, guided the construction unit to accurately replace the grounding electrode, and avoided equipment damage caused by lightning strikes.

telecommunications industry
In lightning protection testing of base stations, data centers, and microwave stations,SGDW-5ACan quickly evaluate the reliability of the grounding system. For example, in a certain5GIn the lightning protection acceptance of base stations,SGDW-5AAfter discovering that the grounding resistance did not meet the standards, timely rectification was carried out to eliminate the risk of lightning strikes and ensure the stable operation of communication equipment.

Architecture and Industry
SGDW-5ASuitable for lightning protection testing in high-rise buildings, petrochemical factories, and metallurgical enterprises. For example, in the lightning protection testing of a large chemical industrial park,SGDW-5ASuccessfully identified multiple grounding resistance exceeding points, guided the enterprise to complete the grounding grid renovation, and reduced the incidence of lightning accidents.