VKCR3000A+ Digital Earth Resistance Tester

1. The tester body is light, easy to carry and operate.

2. With the function of judgement the auxiliary grounding stake, the tester can display the resistance value of the auxiliary grounding stake in testing, whichcan avoid the error caused by the excessive earth resistance of the auxiliary ground stake.

3. With line resistance calibration function, which can avoid the error caused by the bad contact of the test line.It makes the measurement of lowearthresistance more accurate and reliable in the site.

4. Earth voltage measurement function.

1.Measurement Range & Accuracy

Measurement Function	Measuring Range	Accuracy	Resolution
Earth Resistance	0.10Ω~20Ω	±2%rdg±3dgt (Auxiliary earth resistance 100Ω±5%,earth voltage <10V)	0.01Ω
	0.1Ω~200Ω		0.1Ω
	1Ω~2000Ω		1Ω
Earth Voltage	0V~200V AC	±2%rdg±3dgt	1V

2.Technical Specification

Power Supply	DC 9V (alkaline dry battery LR6 1.5V 6 sections)
Display Mode	LED Screen
LCD Size	LCD display area: 58mm × 46mm
Backlight	Controllable brightness, suitable for use in dim place
Measurement	Precision three-wire measurement, simple two-wire measurement
Measuring Method	Earth resistance: rated current pole-change, measuring current 20mA Max; Earth voltage: effective value acquisition
Test Frequency	128Hz
Test Current	＞20mA(Sine wave)
Auxiliary Pile Judgment	Can avoid error caused by excessive earth resistance of the auxiliary grounding pole
Line Resistance Verification	Avoid errors caused by the test line not being fully inserted into the tester interface or poor contact, as well as the errors caused by the user replacing or lengthening the test line,which makes the measurement of earth resistance more accurate.
Test Line	3 PCS: red 15m, yellow 10m, green 5m each 1 piece
Simple Test Line	Red 1.5m
Auxiliary Ground Rod	2 PCS: φ9mm×230mm
Measurement Time	Earth voltage: about 2 times/second; Earth resistance: about 15 seconds/time
Line Voltage	Measurement of earth voltage: measurement below AC 200V
Overflow Display	Over-range overflow function:“OL”symbol display
Battery Voltage	When the battery voltage drop to about 7.2V, the low battery voltage symbol flashes to remind to replace the battery.
Working Current	Backlight: 56mA Max
	Standby: 20mA Max (backlight off)
	Measurement: 200mA Max (backlight off)
Tester Size	157mm×100mm×66mm
Weight	Tester: about 470g (include battery)
Weight	Total weight: about 1935g (include accessory)
Overload Protection	Measurement earth resistance: AC 280V/3 seconds between E-P and E-C ports
Insulation Resistance	Above 10MΩ(500V between the circuit and the housing)
Withstand Voltage	AC 3700V/rms (between circuit and housing)
Electromagnetic characteristics	IEC61010-4-3,wireless frequency electromagnetic field≤1V/m
Suitable Safety Standard	IEC61010-1,IEC1010-2-31,IEC61557-1,pollution level 2,CAT Ⅲ 300V
Working Temperature & Humidity	-10℃~40℃; below 80%RH
Storage Temperature & Humidity	-20℃~60℃; below 70%RH