CA6472數字式多功能接地電阻測試儀@CA6472%

CA6472數字式多功能接地電阻測試儀@CA6472%

• 可用4極（4點）電位降法測量極低接地電阻，并可手動或自動選擇測量頻率，及自動進行測試導線補償
• 使用3極電位降法測量接地電阻
• 使用3極法測量接地耦合
• 高電氣噪聲環境中，可手動選擇或自動頻率掃描40Hz到513Hz的測試頻率，確保測量精度
• 可選擇測試電壓16V或32V ，測量電流可達250mA
• 可使用4極法測量土壤電阻率，并自動計算顯示Rho（ρ）值；用戶可選擇Wenner法或Schlumberger法
• 可進行2線或4線法測量直流電阻 (接地回路連接點電阻)，具自動電流反向功能
• 可用雙鉗法測量接地電阻 (不需要打輔助地樁)
• 配合CA 6474和塔桿接地測試專用的電流鉗（GroundFlex^®），可測量高壓輸配電搭桿腳的漏電流和接地電阻，而不需要斷開架空地線
• 標配DataView^® 軟件，可用于測量數據導入PC存儲、實時顯示、分析、生成報告及進行儀器組態設置
• 自動關機電源管理功能
• 自動識別所有的輔助電極連接及電極電阻
• 儀器內存可存儲512組完整的測試數據
• 使用光口隔離USB 通訊接口
• 使用可充電鎳氫（NiMH ）電池作為電源，可選購車充配件
• 強固型防塵防雨外殼設計

• 使用3極法測量接地極或接地網的接地電阻，通常用于容易斷開接地連接導線的場合
• 使用4極法測量土壤電阻率，用于定位土壤電阻率最低的位置，使接地工程更為合理、經濟
• 接觸或跨步電位測量。在無法斷開接地導線的狀況下，且接地故障極有可能發生時，或電氣裝置與地面接觸的面積，與被測接地的大小可比擬時，建議進行電位測量。
• 使用2線或4線法測量接地回路聯結點的導通性（連續性），測試電流為DC 250mA或更高，可用于檢測接地系統的所有聯結點的電阻。

進行接地耦合測量與顯示，用于評估互不相連（獨立）的兩個接地電阻系統之間的影響

技術參數：

CA6472 digital multifunctional ground resistance tester@CA6472%

Digital multifunctional ground resistance tester CA6472,can be used to measure: ground loop connection pointresistance, grounding resistance (traditional pile methodor a clamp method), soil resistivity, ground coupling, andthe step voltage, contact potential etc..

As with the use of CA6474, can be used for themeasurement of grounding resistance of transmissiontower or wireless communication tower bar.

CA6472 grounding resistance measurement range, 0.01 to 99.99k Ω, automatic range function, can automatically switch to the best measurement range, and selects the best frequency measurement and current measurement. Measuring frequency can be set from 40 to 5078Hz configuration (manually or automatically); due to the adoption of high anti-interference design, can be used for a variety of complex and bad environment (such as the existence of discrete current measurement accuracy)

CA6472 can store 512 sets of measured data, candirectly view on the instrument, or by the DataView ®software to import the data into PC, automatically generate reports, potential distribution map, the test frequency / resistance graph etc..

Product features:

Available 4 pole (4 points) fall of potential method of measuring very low grounding resistance, and can bemanual or automatic selection of measuring frequency,and automatic test lead compensation

The use of 3 electrode potential drop method of grounding resistance measurement

The use of 3 coupling measurement method

High electrical noise environment, can test the frequencyselected manually or automatic frequency scanning 40Hzto 513Hz, ensuring measurement accuracy

Can choose the test voltage of 16V or 32V, measuring the current up to 250mA

Can use 4 electrode measurement of soil resistivity, and automatic calculation shows that Rho (P) one value; the user can choose Wenner method or Schlumberger method

Can be carried out in 2 line or 4 line method of measuring DC resistance (ground loop connection point resistance),with automatic current reverse function

Grounding resistance measurement by double clamp method (no need to call the auxiliary pile)

With CA 6474 and tower grounding test current clampspecial (GroundFlex ®), capable of measuring high voltage transmission and distribution on the rod foot of the leakage current and the grounding resistance, and does not need to disconnect the overhead ground wire

The standard DataView ® software, can be used to measure the data into the PC memory, real-time display,analysis, report generation and instrument configurationsettings

Automatic shutdown of power management features

Automatic recognition of the auxiliary electrode and the electrode resistance all connections

The instrument can test data memory stores a 512 set ofcomplete

Use only isolated USB communication interface

Use rechargeable nickel metal hydride (NiMH) battery as the power supply, purchase a car filled with optionalaccessories

Rugged dustproof rainproof casing design

Product application:

Using the 3 electrode method measuring grounding andgrounding resistance, typically used to disconnect the ground connection conductor occasions

Using the 4 electrode method for measurement of soil resistivity, soil resistivity minimum position, make thegrounding engineering is more reasonable, economy

The contact and step potential measurement. Unable todisconnect the ground wire of the situation, and thegrounding fault is likely to occur, or electrical device ofthe contact area with the ground, and the measuredground size is comparable, suggest potential measurement.

The use of 2 or 4 wire method to measure theconductivity of ground loop connection point (continuous),the test current is DC 250mA or higher, can be used for the detection of resistance grounding system allconnection points.

Ground coupling measurement and display, for the assessment of each other (independent) effect between the two grounding resistance system

Technical parameters:

3 pole 4 pole / double clamp method selective measurement of soil resistivity grounding of DC resistance measurement

Measurement with CA6474

Measurement

Range 0.01 Ω

99.9k Ω to 0.001 Ω

99.9 Omega 0.01 Omega

500 Ω 0.01K Ω

99.9k Ω 0.01mV

0.001 - 65.00V

99.9k Ω to 0.001 Ω

99.99k

Resolution 0.01-

100 - 0.001-

10 - 0.01-

1 - 0.01-

100 - 0.01mV-

10mV 2 line method: 0.01 Ω -100

4 line method:

0.001 Ω -10 Ω 0.001-10

Accuracy of ± (2%+1

Count (2%+1)

Count) ± (10%+1 count (2%+1)

Count) ± (5%+1 counts) ± (2%+2 count (5%+1)

Count)

The no-load voltage of 16 or 32VRMS ± 16VDC 16 or32VRMS

The frequency of test 41-

5078Hz 41-

5078Hz automatically: 1367Hz

Manual: 1367Hz/ 1611Hz/ 1758Hz 41-

128Hz 41-

128Hz DC 41-5078Hz

A - coupling measurement

Auxiliary pile resistance test 0.1 Ω

100k Ω to 0.01 Ω

100k Ω - Omega - 0.0

100K

The maximum 60V peak value of 60V interference voltage

Peak value

Measuring methods -- Wenner&

Schlum

The Berger method

Automatic calculation

Measurement of type 3 line 4 line 4 line 3 line 2 line or 4line

Current measurement, >200mA DC

Memory can store 512 groups of measurement results

Communication interface port communication line /USB

Protection class IP53

Electrical safety CAT IV 50V, with IEC 61326-1 / IEC 61010 / IEC61557-1-4-5

Size 260 x 240 x 120 mm

The weight of 3.2 kg