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  • CONSTANT 250ER Earth Resistance Tester

CONSTANT 250ER Earth Resistance Tester

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01 / 12 / 2019
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Detail CONSTANT 250ER Earth Resistance Tester

CONSTANT 250ER Earth Resistance Tester Features • Power measurement of 3-phase 3-wire circuit, 3-phase 4-wire circuit and single phase circuit • Measure V, A, W, VA, VAR, kWh, Power Factor ( Cos j) , and Hz • Double scales analogue bar graph to display voltage & current fluctuation • Minimum current of Active Energy measurements is 5A, measure expanding energy per hour of general electrical equipment. Measure and display 5 parameters of power of each phase : Active Power, Apparent Power, Power Factor, Reactive Power, Active Energy, and Total Power value in 3-phase measurement mode respectively • Double lines display 2 parameters on each menu, store 28 groups of measurement parameter • Display measurement time and select tested voltage signal at one time in Active Energy measurement mode for long measurement • Portable, light and easy to carry • External power supply for long time active energy measurement • Maximum/ minimum value measurement • ” OL” for input voltage exceeds 600V, current exceeds 1000A, active power exceeds 600kW • Low battery indication Function Resistance Range - Resistance : 0.01 ~ 0.999© - 0.001© 1 ~ 9.99© - 0.01© 10 ~ 99.9© - 0.1© 100 ~ 199.9© - 1© 200 ~ 400© - 5© 400 ~ 600© - 10© 600 ~ 1200© - 20© Accuracy : ± ( 1.5% rdg + 0.01© ) ± ( 1.5% rdg + 0.1© ) ± ( 2.0% rdg + 0.3© ) ± ( 3.0% rdg + 1© ) ± ( 6.0% rdg + 5© ) ± ( 10% rdg + 10© ) ± ( 20% rdg + 20© ) AC Current Range - Resistance : 100mA - 0.1mA 300mA - 0.3mA 1A - 0.001A 3A - 0.003A 10A - 0.01A 20A - 0.03A Accuracy : ± ( 2.5% rdg + 1mA) ± ( 2.5% rdg + 2mA) ± ( 2.5% rdg + 0.003A) ± ( 2.5% rdg + 0.01A) ± ( 2.5% rdg + 0.03A) ± ( 2.5% rdg + 0.05A) Display : 4 digits, 9999 counts Max. Conductor Size : ø 32mm or 45mm x 32mm Battery : 9V Alkaline Size / Weight : H276 x W104 x D54mm / Approx. 1050g Standard Accessories : 3 Calibration Loops ( 1© , 5© and 100© ) , Hard Case, Battery, Manual, Calibration, Constant Certificate
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