東莞市宏圖儀器有限公司
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BasicInfo
HT3000 Digital Ground Resistance Tester
I. Product Introduction
HT3000 digital grounding resistance tester, also known as the three-wire grounding resistance tester, grounding resistance meter, etc., is a commonly used instrument for measuring common grounding resistance meters.It uses a large LCD gray screen backlight display and microprocessor technology to meet the two-wire, three-wire test resistance requirements.Suitable for telecommunications, electricity, meteorology, computer rooms, oil fields, power distribution lines, iron tower transmission lines, gas stations, factory grounding networks, lightning rods and so on.The instrument has the characteristics of precise, fast, simple, stable and reliable.
HT3000 digital grounding resistance tester is controlled by a microprocessor and can automatically detect the connection status of each interface and the interference voltage and interference frequency of the ground network, and with the function of testing the auxiliary grounding resistance, the measured grounding and auxiliary grounding resistance in the same screen display is clear at a glance.At the same time store 500 sets of data, resistance measurement range: 0.01Ω ~ 3000Ω, grounding voltage range: 0 ~ 100V. The online monitoring data can be monitored by the monitoring software. USB data can be uploaded to the PC and has unique functions such as numerical maintenance and intelligent alarm prompting.
HT3000 digital grounding resistance tester consists of host computer, monitoring software, test line, USB cable, and grounding pin. It has the functions of reading, checking, saving, reporting and printing of historical data.
II. Technical Specification
| Grounding resistance range | 0.01Ω~3000Ω Accuracy±1.5%rdg±3dgt |
| Grounding resistance resolution | 0.01Ω |
| Grounding voltage range | 0~100V AC Accuracy±1.5%rdg±3dgt |
| Grounding voltage resolution | 0.01V |
| base condition | 23oC±5oC,below 75%rh (Auxiliary grounding resistance 100Ω±5%,voltage to ground<10V) |
| Function | Ground resistance measurement, ground voltage measurement, low value resistance measurement |
| Power | DC 6V 4.5AhLead-acid battery, standby for more than 100 hours |
| Backlight | Controllable gray screen backlight, suitable for use in dim places |
| Measuring mode | Precise three-wire measurement, simple two-wire measurement |
| Measuring methods | Grounding resistance: rated current change pole method, 128Hz; Ground Voltage: Average Rectification |
| Test frequency | 128Hz |
| Short-circuit test current | > 20mA ( sine wave) |
| Wire resistance check | Avoid the errors cause of the test line is not fully inserted into the instrument interface or the contactor is incorrectly replaced or the user replaces the extended test lead, to make the ground resistance test more accurate |
| Display mode | 4-bit large LCD display, gray screen backlight |
| Measurement instructions | LED flashing indicator during measurement, LCD countdown display |
| LCD size | 108mm×65mm |
| Instrument size | L/W/H:277.2mm×227.5mm×153mm |
| Test line length | 3 strips:red 15m,yellow 10m,green 5m each one |
| Simple test line | 2 strips:yellow 1.6m,green 1.6m each one |
| Auxiliary grounding rod | 2PCS:φ10mm×200mm |
| Measure time | Ground voltage: about 3 times/sec; grounding resistance: about 5 seconds/time |
| Measurement times | More than 5000 times |
| Line voltage | Measuring voltage to ground: test below AC 100V |
| USB interface | With USB interface, software monitoring, storage data can be uploaded to the computer, save and print |
| Communication line | One USB communication line, 1.5m long |
| Data storage | 500 groups, "MEM" storage instructions, display "FULL" symbol indicates that the storage is full |
| Data review | Data review function: "MR" symbol display |
| Overflow display | Over-range overflow function: "OL" symbol display |
| Alarm function | Alarm when the measured value exceeds the alarm setting value |
| Battery voltage | Real-time display of battery power, reminding timely charging when battery voltage is low |
| Automatic shut-down | "APO" indicates automatic shutdown after 15 minutes |
| Power consumption | Standby: 40mA Max (backlight off) |
| Turn on backlight: 43mA Max | |
| Measurement: 120mA Max (backlight off) | |
| Weight | Instrument: 2397g (with battery) |
| Test line: 850g (including simple test line) | |
| Auxiliary grounding rods: 425g (2) | |
| Instrument bag: 271g | |
| Working temperature and humidity | -10oC~40oC;below 80%rh |
| Storage temperature and humidity | -20oC~60oC;below 70%rh |
| Overload protection | Grounding resistance: AC 280V/3 seconds between E-H and E-S ports |
| Insulation resistance | Above 10MΩ (500V between circuit and case) |
| Pressure resistance | AC 3700V/rms(between circuit and case) |
| 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),pollution level 2,CAT 300V |
III. Accessories
| Meter | 1PC |
| Instrument bag | 1PC |
| Auxiliary grounding rod | 2PCS |
| Monitoring software (CD-ROM) | 1PC |
| USB communication line | 1PC |
| Test line | 3PCS(red 15m,yellow 10m,green 5m each one) |
| Simple test line | 2PCS(yellow 1.6m,green 1.6m each one) |
| 6V Battery(internal) | 1PC |
| Charger | 1PC |
| Manual, certificate | 1SET |
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