STHD-5A Grounding Resistance Tester for Earth Network

NegotiableUpdate on 12/11

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Overview

The STHD-5A earth network grounding resistance tester, also known as the power frequency grounding resistance tester, grounding resistance meter, etc., is a commonly used instrument for inspecting and measuring grounding resistance. It adopts a new type of variable frequency AC power supply, dual frequency measurement technology, ultra large touchable color screen, and microprocessor technology to meet the impedance requirements of two-wire, three wire, and four wire tests. At the same time, it can measure parameters such as soil resistivity, step voltage, distributed potential, contact voltage, and current phase angle.

Product Details

STHD-5A 大地网接地电阻测试仪

STHD-5A Grounding Resistance Tester for Earth Network

The digital large-scale grounding resistance tester, also known as the power frequency grounding resistance tester, grounding resistance meter, etc., is a commonly used instrument for inspecting and measuring grounding resistance. It adopts a new type of variable frequency AC power supply, dual frequency measurement technology, ultra large touchable color screen, and microprocessor technology to meet the impedance requirements of two-wire, three wire, and four wire tests. At the same time, it can measure parameters such as soil resistivity, step voltage, distributed potential, contact voltage, and current phase angle. Suitable for telecommunications, power, meteorology, computer rooms, oil fields, power distribution lines, iron tower transmission lines, gas stations, factory grounding grids, lightning rods, etc., in compliance with the standards for testing instruments for power substations and lightning protection devices. The instrument testing is characterized by precision, speed, simplicity, stability, and reliability.

The maximum open circuit voltage output of the digital large-scale grounding resistance tester can reach400V， The maximum short-circuit current can reach 5A. The microprocessor control and automatic dual frequency technology can accurately measure and calculate the grounding impedance value at 50Hz power frequency under strong interference conditions, and the large screen display is clear at a glance. Simultaneously store 100 sets of data, with a resistance measurement range of 0.000 Ω to 2000 Ω. Measurement data can be printed out through a thermal printer.

The digital large-scale grounding resistance tester for ground grids consists of a host, test lines, grounding rods, etc., and has a history ofFunctions such as reading, querying, saving, and printing historical data.

STHD-5A 大地网接地电阻测试仪

merit can	Ground resistance measurement, soil resistivity measurement, step voltage measurement, distributed potential measurement, contact voltage measurement
ground impedance	0.000-2000 Ω Accuracy: ± 0.5% FS ± 5dgt Minimum Resolution: 0.001 Ω
Soil resistivity measurement	0.000~999K Ω m Minimum resolution: 0.001 Ω m
Step voltage measurement, distributed potential measurement, contact voltage measurement	0~400V minimum resolution: 0.001V
Impedance angle measurement (radians)	0~360.0 ° resolution: 0.1 °
Rated measurement power	2000W
anti-interference capability	Anti power frequency50Hz voltage 50V
Benchmark conditions	23 ℃± 5 ℃, below 70% RH（Auxiliary grounding resistor20 Ω± 10%, ground voltage<10V)
electricity source	AC 220V 10A (50Hz)
back light	Adjustable backlight brightness
measurement method	Four wire test, three wire test, two wire test
measurement method	Grounding impedance: rated current method,
Short circuit test current	1A, 2A, 3A, 4A, 5A (5-speed setting)
Soil resistivity electrode spacing Fan enclose	Configurable1m～100m
test frequency	45Hz、55Hz、 Automatic dual frequencyoptional
Maximum short-circuit current	AC 5A ± 10% sine wave
Maximum no-load voltage	AC 400V ± 10% sine wave
display mode	7-inch touch color screen
touch screen	yes
Measurement indication	Measurement progress display, measurement prompt animation display
Instrument size	Length, width, height:540mm×440mm×210mm

Standard test line length	red15m， Black 15m, yellow 10m, green 10m, yellow 1.5m, green 1.5m each
Auxiliary grounding rod	800mm 2 pieces, 200mm 2 pieces
measure time	Grounding impedance: approximately1 minute/time
hit India	Built in thermal printer
Paper size specifications	57*40mm
data storage	100 sets, "Save successfully!" storage indication, displaying "Save failed, space is full!" character indicating storage is full
Data retrieval	have
Overflow display	Over range overflow function:The symbol 'OL' is displayed
Auto Shutdown	none
merit consume	standby: <110W
merit consume	Measurement:2000W
quality quantity	meter:27 kg
quality quantity	Test line, auxiliary grounding rod, instrument bag:5.5kg
Working temperature and humidity	-10℃～40℃； Below 80% RH
Storage temperature and humidity	-20℃～60℃； Below 70% RH
insulation resistance	Above 10M Ω (500V between circuit and casing)
endure press	AC 3700V/rms (between circuit and casing)
electromagnetic properties	IEC61010-4-3， Wireless frequency electromagnetic field ≤ 1V/m
Suitable for safety regulations	IEC61010-1、IEC1010-2-31、IEC61557-1,5、IEC60529(IP54)、污染等2、 CAT Ⅲ 300V

STHD-5A Grounding Resistance Tester for Earth Network

STHD-5A 大地网接地电阻测试仪

ceremony table	1 unit
ceremony table bag	1 piece
Auxiliary grounding rod	4 pieces
measure try line	4 pieces (red 15m, black 15m, yellow 10m, green 10m each)
Simple testing line	2 pieces (1 yellow 1.5m, 1 green 1.5m each)
220V power cord	1 item
Instruction manual, warranty certificate	1 set