UT271A UT271B UT271C Clamp Earthing Resistance Tester UT271 series of Clamp Earth Resistance Tester is a major breakthrough in traditional grounding resistance measurement. In the measurement of a grounding system with loop, does not require breaking down the grounding down lead, and no need the auxiliary grounding electrode. It is safe, fast and simple in use.UT271 series clamp grounding resistance meter can measure ground faults which cannot be measured by traditional methods. It can be used in applications where traditional methods cannot be measured, because the UT series clamp grounding resistance meter measures the combined value of grounding body resistance and grounding lead resistance. In addition, the B/C type Clamp Grounding Resistance Tester is also able to measure the leakage current and the neutral current in the grounding system.It is widely used in the grounding resistance measurement of the power, telecommunications, meteorology, oilfield, construction and the industrial and electrical equipment. Features ●Resistance measuring range: UT271A:0.010~300ΩUT271B：0.010~500ΩUT271C：0.010~1000Ω●Range of AC current：0.01mA~20.0A (UT271B/UT271C)●Jaw diameter：Φ32mm●500 sets of data storage●Ω A display on the same screen (UT271B/UT271C)●Screen display: 4-digit LCD display●Quick self check upon startup●Fully automatic gear shifting●Quick measurement: measurement time once per second●Product Certification：CE-EMC(EN 60335-1)、CE-LVD(EN 61326-1) Specification Series Model Model Jaw Size (mm) Resistance Range (Ω) Current Range (A) UT271A Φ32mm 300Ω -- UT271B Φ32mm 500Ω 20A UT271C Φ32mm 1000Ω 20A Ranges & Accuracy Function Range Resolution Accuracy UT271A UT271B UT271C Resistance 0.010Ω-0.099Ω 0.001Ω ±（1%rdg＋0.01Ω） √ √ √ 0.10Ω-0.99Ω 0.01Ω ±（1%rdg＋0.01Ω） √ √ √ 1.0Ω-49.9Ω 0.1Ω ±（1%rdg＋0.1Ω） √ √ √ 50.0Ω-99.5Ω 0.5Ω ±（1.5%rdg＋0.5Ω） √ √ √ 100Ω-199Ω 1Ω ±（2%rdg＋1Ω） √ √ √ 200Ω-395Ω 5Ω ±（5%rdg＋5Ω） √ √ √ 400Ω-590Ω 10Ω ±（10%rdg＋10Ω） - √ √ 600Ω-1000Ω 20Ω ±（20%rdg＋20Ω） - - √ Current 0.00mA-9.99mA 0.01mA ±（2.5%rdg＋1mA） - √ √ 10.0mA -99.9mA 0.1mA ±（2.5%rdg＋5mA） - √ √ 100mA -299mA 1mA ±（2.5%rdg＋10mA） - √ √ 0.30A-2.99A 0.01A ±（2.5%rdg＋0.1A） - √ √ 3.0A-9.9A 0.1A ±（2.5%rdg＋0.3A） - √ √ 10.0A-20.0A 0.1 A ±（2.5%rdg＋0.5A） - √ √ Source DC 6V，No.5 alkaline dry battery（LR6 1.5V×4）not included Jaw size Φ32mm Ω ASame screen display Supporting(UT271B、UT271C) Data storage 500 sets Jamming test Automatically identify interference signals,indicated by the "Noise" symbol when the interference current is high Battery voltage Low battery voltage symbol reminder Power consumption Max is about 60mA Time of measurement Once per second LCD Size 46mm×36mm Caliper gauge size 260mm×105mm×60mm Insulation resistance 20M Ω or above (500V between circuit and casing) Withstand voltage AC 3700V/rms(Between circuit and enclosure) Weight of caliper meter Approximately 818g (including battery) Operating temperature and humidity -10℃～40℃； Below 70% RH Storage temperature and humidity -20℃～60℃； Below 80% RH External magnetic field and electric field ＜40A/m；＜1V/m Suitable for safety regulations IEC61010-1 (CAT Ⅲ 300V, CAT IV 150V, pollution degree 2); IEC61010-031；IEC61557-1 (grounding resistance); JJG 1054-2009 Verification Regulation for Clamp Grounding Resistance Meter
