is a professional instrument specifically designed for testing the performance parameters of various lightning protection and overvoltage protection components. It is widely used in power systems, communication base stations, meteorological lightning protection detection, railway signaling, and industrial production fields to ensure the safety and reliability of lightning protection devices.
The following is a detailed introduction to the core functions, test objects, main technical indicators, and mainstream models in the 2026 market for this instrument:
1. Main Test Objects
The lightning protection component tester is mainly used to measure the DC parameters of the following components:
Zinc oxide arresters (MOV/varistors): Test their varistor voltage.
Gas discharge tubes (GDT): Test the DC breakdown voltage (ignition voltage) of two-electrode or three-electrode discharge tubes.
Vacuum lightning arresters: Test their operating voltage.
Surge protective devices (SPD): Performance screening of the overall module.
2. Core Functions and Features
Modern intelligent lightning protection component testers (such as mainstream models in 2026) typically have the following functions:
Dual parameter measurement: Measure voltage and microampere-level leakage current simultaneously or separately.
Varistor voltage test: Automatically increase voltage to a set current (usually 1mA) and read the voltage value.
Leakage current test: Measure leakage current at a specified voltage (e.g., 0.75 times varistor voltage) to determine whether the component is aging.
Discharge tube test: Increase voltage at a constant rate (e.g., 100V/s) to capture the voltage value at the moment of breakdown.
Intelligent judgment: Users can preset the qualified range (upper/lower limits), and the instrument automatically judges “Pass/Fail” and alarms.
Safety protection: Equipped with high-voltage short-circuit protection, overcurrent protection, and automatic discharge function (automatically discharges high voltage after test, usually <5 seconds).
Data management: Color touch screen operation, supports data storage, USB export, report generation, and some high-end models support Bluetooth upload to mobile phones or computers.
Self-check function: Automatically detects internal circuit status at startup.
3. Typical Technical Parameters (Reference to 2026 Mainstream Standards)
Measurement voltage range: Usually covers 50V to 3000V (some high-voltage types can reach 5000V).
Voltage accuracy: ±(2% reading + 3 digits) or higher.
Leakage current range: 0 to 1000μA (resolution up to 0.1μA).
Leakage current accuracy: ±(2%~3% reading + several digits).
Voltage rise speed: Adjustable, usually conforms to the standard (100±8)V/s when testing discharge tubes.
Power supply: Built-in large-capacity lithium battery, supports long-term field operations.
Implementation standards: Complies with GB/T 21431 (Technical code for detection of lightning protection devices of buildings), IEC 61643, DL/T 381, and other standards.
4. Mainstream Models and Manufacturer Recommendations in 2026 Market
According to the latest market information, the following instruments have high attention and application rates in the industry:
Table
Model Series Representative Manufacturer Brief Description of Features
DSFL-3 Wuhan Deshi Electric A well-regarded model in 2026, focusing on high cost-effectiveness, user-friendly interface, suitable for power and lightning protection testing institutions.
V2944 Multiple general/custom Color touch screen, supports auto-ranging and pass/fail screening, data can be exported via USB, comprehensive functions.
FC-2G / FC-SPD Wuhan Moen / Zhuoya Electric Upgraded classic models, compliant with multiple power standards, equipped with high-voltage self-discharge and memory functions, good stability.
HZFL-9020 Hertz Electric Intelligent SPD tester, integrated insulation resistance test function, short stabilization time (≤3 seconds).
HB-FL series Qingdao Huabao Electric Specialized lightning protection test devices designed for rail transit fields such as railways and subways.
5. Purchasing Suggestions
If you plan to purchase or use a lightning protection component tester, it is recommended to pay attention to the following points:
Range matching: Confirm whether the instrument's maximum test voltage meets the maximum specification of lightning protection components you need to test (generally 3000V covers the vast majority of civil and industrial SPDs).
Compliance: Check whether the instrument complies with the latest GB/T 21431-2015 (or updated versions) and meteorological/power industry testing requirements, and whether it has a calibration certificate from a metrology institute.
Safety: Field testing often involves high voltage, so be sure to choose a model with comprehensive automatic discharge and short-circuit protection functions.
Data traceability: For institutions that need to issue formal test reports, choosing an intelligent model with data storage, printing, or export functions is crucial.
If you need detailed manuals, price quotes, or comparative analysis for specific models, please tell me your specific application scenario (e.g., meteorological bureau testing, power inspection, factory production line testing, etc.), and I can provide you with more targeted information.
