ETCR 3000 - II. Measuring Range and Accuracy; III. Technical Specifications

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II．Measuring Range and Accuracy
Measuring
Functions
Measuring
Range
Accuracy Resolution
0.01Ω～20Ω 0.01Ω
0.1Ω～200Ω 0.1Ω
Earth Ground
Resistance
1Ω～2000Ω
±1%rdg±3dgt
(Auxiliary earth
ground resistance
100Ω±5%，voltage
to ground＜10V)
1Ω
Earth Ground
Voltage
0～600V AC ±1%rdg±3dgt 1V
(Remark: 23℃±5℃，below 75%rh)
III．Technical Specifications
Function
Earth ground resistance measurement, voltage to
ground measurement, low value resistance
measurement
Power Supply
DC 9V(Zi-Mn dry battery R14S 1.5V 6 PCS,
continuous standby for 300 hours )
Backlight
Controllable blue backlight, suitable for use in dark
place.
Measuring
Mode
Precise 3-pole measurement, simple 2-pole
measurement
Measuring
Method
Earth ground resistance: rated current change-pole
method, measurement current 3mA Max，820Hz；
Voltage to ground: average value rectification
Data Mode Average value, maximum, minimum
Wire Resistance
Verification
Avoid error caused by testing wire that is failed to be
fully inserted into tester interface or by poor contact or
by users’ replacing or lengthening testing wires,
making it more accurate for earth ground resistance
measurement.
Display Mode
4-digital super-large LCD display, blue screen
backlight
Measuring
indicator
During measurement, LED flash indicator, LCD count
down display
LCD Dimension 128mm×75mm；Display field：124mm×67mm
Dimension L×W×H: 215mm×190mm×95mm
Testing Wires
Three wires: each for Red 20m, Yellow 10m, and
Green 5m