Table of Contents

Product Introduction

Model HF-GT-206 Intelligent Surge Component Tester, also named Surge Arrester Tester and SPD On-site Tester, is a dedicated professional instrument for performance testing of surge arresters, lightning protectors, surge protective devices, varistors, metal ceramic gas discharge tubes, vacuum discharge tubes and other components.

Equipped with a rechargeable battery for offline operation, it solves the inconvenience of mains-powered traditional instruments for field work. With an output voltage up to 2000V, it features comprehensive protective circuits and automatic power-off function for high safety. It also supports insulation resistance measurement. The device adopts a large color screen display, data storage, data inquiry, qualified judgment and auto power-off functions, together with USB data uploading. Featuring an elegant appearance, wide measuring range, high resolution, portable design, stable performance and strong anti-interference capability, it has a dustproof and moistureproof structure adaptable to harsh working environments.

It is widely used in meteorological departments, power utilities, communications industries, mechanical & electrical installation, maintenance work, as well as industrial and energy enterprises to test key performance parameters of surge arresters and surge protection devices.

This tester is built with large-scale integrated circuits, delivering large output power and excellent repeatability. Key measurement ranges: initial action voltage 0~3000V, leakage current 0.1~199.9μA, insulation resistance 0~1000MΩ. One-click measurement ensures easy and fast operation.

Technical Specifications

Item	Parameter Details
Functions	Varistor (MOV) initial voltage & leakage current test; Gas Discharge Tube (GDT) breakdown voltage test; Insulation resistance test
Reference Test Conditions	23℃±5℃, relative humidity ≤75%
Measured Voltage Range	0 ~ 3000 V, Accuracy: ±2%rdg ±3dgt
Measured Leakage Current Range	0.1μA ~ 199.9μA, Accuracy: ±3%rdg ±5dgt
DC Voltage Resolution	1 V
Leakage Current Resolution	0.1 μA
Insulation Resistance Range	0 ~ 1000 MΩ
Test Stabilization Time	≤ 3 seconds
Breakdown Voltage Rising Rate	(100±8) V/s
Power Supply	7.2V large-capacity rechargeable battery
Backlight	Available, suitable for dim environments
USB Data Transmission	Supported
Display	5-inch color TFT LCD screen
LCD Display Size	108mm × 65mm
Overall Dimensions	240mm(L) × 188mm(W) × 85mm(H)
Test Leads	1.5m red lead, 1.5m black lead
Data Storage	500 groups of measurement data
Data Query	Supported, marked with “MR” symbol
Overrange Indication	“OL” symbol for over-limit prompt
Judgment Function	Alerts when readings exceed preset threshold range
Power Consumption	Standby: Max 150mA Measuring state: Max 880mA
Weight	1230g (including built-in battery)
Low Battery Reminder	Real-time battery voltage display, low power icon prompt
Auto Power-off	Automatically shut down after 15 minutes of idle operation
Internal Insulation Resistance	≥50MΩ (tested at 1000V)
Dielectric Withstand Voltage	AC 3kV / 50Hz for 1 minute
Operating Temperature & Humidity	-10℃ ~ +50℃, RH＜85%
Storage Temperature & Humidity	-15℃ ~ +55℃, RH＜90%
Safety Compliance Standards	IEC61010-1, IEC61010-2-31, IEC61557-1-5, IEC60529(IP54), Pollution Degree 2, CAT III 300V

Application Scenarios of Smart SPD Tester

1. Power System Substation & Distribution Room Routine Inspection

Regularly test the varistor voltage, leakage current and insulation performance of low-voltage SPDs installed in power distribution cabinets, box transformers and switchgears. Judge SPD aging, degradation and failure risks in advance, avoid lightning surge damage to power supply equipment, guarantee continuous and safe power delivery for urban and rural power grids.

2. Communication Base Station & Data Center Operation Maintenance

Telecom base stations, computer rooms, server rooms and IDC data centers are equipped with a large number of surge protection devices to shield signal and power surges. Engineers use this tester to periodically calibrate SPD working status; replace failed SPDs timely to prevent surge breakdown of servers, switches and communication modules, ensure stable operation of network and IT equipment.

3. Meteorological Bureau Lightning Protection Engineering Acceptance & Annual Detection

Special lightning protection inspection institutions and meteorology departments apply the instrument for:

Acceptance testing of newly completed building lightning protection projects;
Annual mandatory lightning safety detection for schools, hospitals, government buildings, commercial complexes;

Verify whether SPD, gas discharge tubes and lightning protection grounding accessories meet national lightning protection standards.

4. Petroleum, Chemical & Explosion-proof Industrial Sites

Oil depots, gas stations, chemical plants, refineries belong to flammable and explosive hazardous areas. Lightning and electrostatic surges easily trigger safety accidents. On-site staff test the performance of power SPDs installed in control cabinets, pumping equipment and monitoring systems, eliminate hidden dangers caused by invalid surge protection.

5. Railway, Metro & Transportation Infrastructure

Railway signal rooms, subway power distribution stations, highway monitoring systems rely on SPDs to protect signal and power circuits. Construction and maintenance teams carry the portable tester for field debugging, post-installation acceptance and periodic overhaul of surge protection components along rail transit lines.

6. Factory Production Line & Automated Workshop

Electronics, textile, plastic manufacturing workshops are susceptible to static electricity and lightning surges damaging automated machinery, PLC controllers and precision testing equipment. Factory EHS engineers regularly check workshop power cabinet SPDs, maintain electrostatic and surge protection systems.

7. SPD Manufacturer Factory Testing & Outgoing Quality Inspection

Surge protector, varistor, gas discharge tube production factories use the tester for finished product sampling inspection, parameter calibration before delivery, record initial voltage and leakage current data to guarantee product consistency and factory qualification.

8. Building Electrical Decoration & Electromechanical Installation Projects

Electromechanical contractors and electrical installation workers test SPD performance after installing household and commercial building power surge protectors, complete handover acceptance with property owners, confirm lightning protection effects of residential and office electrical systems.

FAQ | Smart SPD Tester

1. What is a Smart SPD Tester used for?

It is a portable dedicated tester for surge protection components. It can test varistor starting voltage, leakage current, GDT breakdown voltage and insulation resistance, to check the aging and failure status of SPDs, gas discharge tubes and surge arresters on site.

2. Which surge protection components can this instrument measure?

Metal oxide varistors (MOV), gas discharge tubes (GDT), lightning arresters, modular SPD surge protectors, vacuum discharge tubes and other common lightning protection components.

3. What are the main measurement ranges?

Starting action voltage: 0 ~ 3000V
Leakage current: 0.1μA ~ 199.9μA
Insulation resistance: 0 ~ 1000MΩ

4. Why do we need to test SPD leakage current regularly?

As SPD ages under lightning surges, its leakage current will gradually rise. Excessive leakage current causes heat accumulation, burnout and even fire hazards. Testing can judge aging degree and arrange replacement in advance.

5. What is the voltage rising rate for GDT breakdown voltage testing?

Fixed at (100±8) V/s, which complies with national lightning protection testing standards and ensures accurate and repeatable breakdown voltage readings.

6. Is the tester rechargeable and suitable for outdoor field work?

Yes. Built-in 7.2V large-capacity lithium rechargeable battery, no need for mains power connection. Portable body design adapts to substations, base stations, construction sites and other outdoor inspection scenarios.

7. Does it support data storage and data export to PC?

It can store up to 500 groups of test data. Equipped with USB interface, matched upper computer software supports data upload, historical record query, curve viewing, report generation and printing.

8. Does the device have an automatic shutdown function?

It will automatically power off after 15 minutes without any operation to save battery power. It also has a real-time low-battery prompt.

9. What safety protection designs does the tester have?

Built-in complete high-voltage short-circuit protection and automatic power-off protection. Withstand voltage reaches AC 3kV/1min, compliant with IEC61010 CAT III 300V safety standard, safe for high-voltage testing.

10. What working environment is applicable?

Operating temperature: -10℃ ~ +50℃, humidity below 85%RH. Dustproof and moistureproof structure, works stably in hot, cold and slightly humid field environments.

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