Earth Ground Resistance Tester Two Three Wire Earth Voltage Meter 2000Ω 600V


Instruction:

  • Digital Earth Resistance Tester specially designed and manufactured for the field measurement of ground resistance, adopts digital and micro-processing technology, 3 wire or 2 wire method to measure ground resistance, with unique calibration function for wire resistance, anti-interference ability and environmental adaptability, to ensure the long-term measurement of high precision, high stability and reliability.
  • The instrument out shell adopts waterproof protection case, anti-collision, anti-fall, waterproof (protection grade IP65),which is strong, safe and durable, the instrument is also equipped with large capacity rechargeable lithium battery pack, especially suitable for outdoor construction site to use.
  • It is widely used in measuring ground resistance of electric power, telecommunication, meteorology, oil field, construction, lightning protection and industrial electrical equipment.
  • Digital Earth Resistance Tester has the unique function of wire resistance calibration, and it is more accurate to measure the low value ground resistance in the field, which can avoid the error caused by the change of wire resistance in the test line for a long time usage.
  • It can avoid errors caused by incomplete insertion of test line into instrument interface or bad contact.It can avoid the error caused by the user to change or lengthen the test line..
  • Digital Grounding Resistance Tester is composed of host machine, monitoring software, test wires, communication wires etc. The large LCD display of host machine, with white backlight and bar graph indicating that can be seen clearly. 
  • At the same time it can store 400 sets of data, realize historical inquiry and online real-time monitoring by monitoring software, dynamic display, with the indicator of max/min/average value, and with alarm value setting and  alarm indicator functions, and with the functions as historical data access, reading, preservation, report forms, printing and so on.

Product Main Function:

  • Earth resistance measurement, Range: 0.010Ω~2000Ω
  • Earth voltage measurement, Range: AC 0～600V
  • Data storage: 400 sets
  • Alarm function: audible and visual alarm

Measurement Range and Accuracy:

Measurement Function

Range

Accuracy

Resolution

Earth Resistance

0.01Ω～20Ω

±2%rdg±3dgt

(Auxiliary grounding resistance 100Ω±5%, Votage to ground＜10V)

0.01Ω

0.1Ω～200Ω

0.1Ω

1Ω～2000Ω

1Ω

Earth Voltage

0～600V AC

±2%rdg±3dgt

1V

（Note：23℃±5℃，below75%rh）

Reference Conditions And Working Conditions:

Influence Constant

Base Condition

Working Conditions

Remark

Environmental Temperature

23℃±1℃

-10℃-40℃

----

Environmental Humidity

40%-60%

＜80%

----

Working Voltage

DC 7.8V±0.1V

DC 7.8V±0.6V

---

Auxiliary Earth Resistance Value

＜100Ω

＜30kΩ

rC、rP

Interference Voltage

Non

＜20V

----

Interference Current

Non

＜2A

----

Electrode Distance of measuring R

a＞5d

a＞5d

----

Technical Specifications:

Function

Measurement of earth resistance, voltage to earth, low value resistance

Power Supply

DC 7.4V 2600mAh rechargeable lithium battery, full of about 8.4V

Backlight

Controllable screen backlight, suitable for dim places

Measuring Mode

Precision 3-wire measurement, simple 2-wire measurement

Measuring Method

Earth Resistance: rated current change-pole method, measurement current 20mA Max

Earth Voltage: Average rectification

Test Frequency

128Hz/111Hz/105Hz/94Hz(AFC)

Short Circuit Test Current

AC 20mA max

Data Mode

Average value, maximum value, minimum value

Wire Resistance Verification

To avoid errors caused by incomplete insertion of test wire into instrument interface or poor contact or replacement of extended test wire by users, so as to make the grounding resistance measurement more accurate

Display mode

4-digital super-large LCD display, white screen backlight

Measure indicator

LED flash indicator and LCD count down display in measurement

LCD Dimension

128mm×75mm; display area:124mmX67mm

Meter Dimension

280mm(L)×260mm(W)×160mm(H)

Test Wires

3 wires: each for red 15m, yellow 10m, and green 5m

Simple Test Wire

2 wires: each for red 1.6m and black 1.6m

Auxiliary Grounding Rod

2PCS: Φ10mm×150mm

Measuring Rate

Earth Voltage: about 3 times/second; Earth resistance: about 15 seconds/time

Measuring Times

Over 5000 times (20Ω gear measure 10Ω, interval time should be at least 30 seconds)

Line Voltage

Measurement of earth voltage: below AC 600V

Communication Interface

With USB interface, software monitoring, storage data can be uploaded to computer, saved or printed.

Communication Wire

One piece of USB communication wire, wire length 1.5m

Data Storage

400 sets, “FULL” symbol flash display storage is full

Data Hold

Data hold function: “HOLD” symbol display

Data Access

Data read function: “READ” symbol display

Overflow Display

Exceed measuring range overflow function: “OL” symbol display

Alarm Function

Measuring value exceeds alarm setting value, will "Toot-toot-toot" alarm hint

Auto-shut off

Automatically shut down after 10 minutes of power on

Battery Voltage

While battery voltage decreases to around 7.2V±0.1V, will display battery voltage low symbol“   ”, and remind to charging the battery

Power Consumption

Backlight: 25mA Max

Standby: 25mA Max(Backlight shut down )

Measurement: 200mA Max(Backlight shut off)

Weight

Tester: 2.29kg

Test wires: 0.847g(include the simple test wires)

Auxiliary Grounding Rod:0.468kg(2pcs)

Tester package: 0.915kg

Working Temperature & Humidity

-10℃-40℃, below 80%rh

Storage temperature & humidity

-20℃-60℃, below 70%rh

Protection Level

IP65(close the case)

Overload Protection

Measure earth resistance: between each interfaces of C(H)-E、P(S)-ES, AC 280V/3 seconds

Insulation Resistance

Over 10MΩ (between circuit and outside shell is 500V)

Withstanding Voltage

AC 3700V/rms. (Between circuit and outside shell)

Electromagnetic Features

IEC61010-4-3,wireless frequency electromagnetic field≤1V/m

Protection Type

IEC61010-1 (CAT Ⅲ 300V、CAT IV 150V、Pollution 2);

IEC61010-031;

IEC61557-1 (Earth resistance);

 Packing list:

Meter

1 PCS

Instrument Bags

1 PCS

Auxiliary Grounding Rod

2 PCS

Monitoring Software CD

1 COPY

USB Communication Cable

1 PCS

Test Wires

3 PCS

Simple Test Wires

2 PCS

Exclusive Charger

1 PCS

Manual/Warranty Card/Certificate

1 PCS