ETCR ETCR3000A+ デジタル地面抵抗計 (0.00Ω~2000Ω, 200VAC)

Measurement Range & Accuracy

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/ ±2%rdg±3dgt (Auxiliary earth resistance 100Ω±5%,earth voltage <10V)/ 0.1Ω

1Ω~2000Ω/ ±2%rdg±3dgt (Auxiliary earth resistance 100Ω±5%,earth voltage <10V)/ 1Ω

Earth Voltage

0V~200V AC/±2%rdg±3dgt/1V

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)

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