คำอธิบาย
ข้อมูลทางเทคนิคของ Earth Resistance Tester BENETECH GT5105A
ช่วงการวัด Ground Resistance Measuring Range 20Ω /200Ω /2000Ω /2000Ω（two wires）
ความแม่นยำ Accuracy ±(2%+3)
ช่วงการวัด Ground voltage Measuring Range 200V
ความแ0ม่นยำ Accuracy ±(2%+5)
1.2 Application standard:
IEC 61010-1 CAT.Ⅲ 600V Pollution degree 2 CAT.Ⅰ 5000V Pollution degree 2
IEC 61326-1 (EMC standard) IEC 60529 (IP40)
1.3 measurement method:
(1) Ground voltage measurement: average response
(2) Ground resistance measurement: test signal frequency:
about 820Hz, current: 20Ω about 3.2mA
1.4 Working environment: temperature: 5℃~ 40℃; relative
humidity:≤80 ~ RH (no fog) Altitude≤2000 meters
1.5 Storage conditions: temperature: -20 ~ 60 ℃; relative humidity:≤70% RH (no fog)
1.6 Power supply: 9V power supply [1.5V (No. 5 alkaline battery) * 6]
1.7 Overload protection: Ground resistance: 200V AC (10 seconds)
Ground voltage: 400V AC (30 seconds)
1.8 Insulation resistance: The insulation resistance between
measurement circuit and case is not less than 20MΩ
1.9 Dimensions: 176mm * 77mm * 110mm
คุณสมบัติ
ยี่ห้อสินค้า BENETECH รุ่น GT5105A
1.backlight and battery detection function.
2.data holding.
3.It can be used for precise three-wire measurement or simple two-wire measurement.
4.When measuring ground resistance, if C or E end of test lead is not in good contact, “—- Ω” warning appears on LCD.
5.”OL” stands for over range.
6.Double insulation or reinforced insulation safety structure.
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