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3. Features
KEW4106 is a 2/ 3/ 4-Wire Digital Earth Resistance/ Earth Resistivity
Tester equipped with a microcomputer and can measure earth resistances
and calculate earth resistivities (ρ). This instrument can measure earth
resistances on power distribution lines, in-house wiring system and electrical
appliances etc. due to the low output voltage: approx 10Vrms or less.
● Designed to meet following safety standards.
IEC 61010-1, IEC61010-2-030 (CAT.III 300V, CAT.IV 150V, Pollution
degree 2)
IEC 61010-031 （Requirements for hand-held Probes）
IEC 61557-1, 5 (Earth Resistance Tester)
● Stable measurement results can be obtained under a noisy environment
by introducing the FFT (Fast Fourier Transform) technology.
● Dot-matrix 192x64, Monochrome LCD
● Backlight function to view the test results in dimly areas
● Can switch frequencies of measuring signal
4-kind of frequencies : 94 / 105 / 111 / 128Hz, are selectable by hand
or automatically.
● Rk Function is available to cancel the residual resistance on the Test
Leads.
● Battery Check Function
● Can measure Series Interference Voltage/ Frequency
Voltage values and frequencies are displayed when Series
Interference voltage (AC) exist.
● Auxiliary Earth Resistance Measurement Function
Auxiliary earth resistances are measured and displayed.
● Warning for Auxiliary Earth Resistance Measurements
Warnings are displayed on the LCD when auxiliary earth resistances are
too high and may result in inaccurate measurements.
● Auto-Power-Off Function
The instrument is automatically powered off when 5 min passes without
any Key operation.
● Memory Function
Can save 800 measured results.
● Communication Interface
Can transfer the saved data in the instrument to a PC via a supplied
Optical Adaptor.
