TE-12B Double Clamps Earth Tester is widely used in the fields of resistance testing for earth resistance of various equipments and buildings. It also can test the soil resistively and leakage current of earth systems under different conditions.
It not only possesses the function of the traditional method but the features of earth resistance testing without assistant poles, It realizes the on-line measurement of earth resistance without assistance poles and isolation of earth devices and equipments by adopting the principle of 2-poles measurement and the technology of double jaws.
Key Features:
1. Adopt the measurement method in the type of jaw and meters, can be operated without assistance poles.
2. Realize the on-line measurement; it is unnecessary to isolate the earth device from equipment.
3. Test the RMS of leakage current under the conditions of earth/unearth of system.
4. With the function of self-checking and avoid the influence for the test result by connecting the resistance and line resistance
5. Realize the alternation of functions, adopt the digital switch to cutover the function in order to improve the reliability of system.
6. Communicate with the upper-level PC to realize uploading of the test data which can be saved and printed easily.
7. Easy and convenient operation with broad range of usage and measurement, with the backlighting system.
8. Electrical safety: It should agree with the standard of IEC1010-1, EN61010-1 or IP53
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Measuring range for the four-wires
measurement method:
0.00Ω~19.99K Error:
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0.00Ω~19.99Ω
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≤±3%+3pts
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20.0Ω~19.99KΩ
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≤±5%+3pts
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Measurement method of four-wires
and jaw: 0.00Ω~1.99KΩ Error:
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0.00Ω~1.99KΩ
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≤±3%+3pts
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For double jaws: 0.00Ω~100ΩError:
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0.0Ω~19.9Ω
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≤±10%+2pts
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20Ω~100Ω
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≤±20%+2pts
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For resistively of earth resistance:
0.00~1999KΩm Error:
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0.01Ωm~1999Ωm
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≤±3%+3pts
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2.00KΩm~1999KΩm
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≤±5%+3pts
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For the leakage(RMS):
0.0mA~19.9A Error:
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0.0mA~9.99A
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≤±3%+3pts
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10.0A~19.9A
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≤±5%+3pts
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Storage capacity:
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250 groups of datas
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Working temperature:
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-10℃~+55℃
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Storage temperature:
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-30℃~+70℃
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Power supply
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6 V DC, 4 × 1.5V AA alkaline dry battery or
4.8V DC, 4×1.2V AANi-Mh recharge battery
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Weight:
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1.0㎏(exclusive of accessories)
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Dimension
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215×115×85mm
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It is only for reference. The actual accessories and quantity are according to demand.
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No.
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Item
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Qty.
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1
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TE-12B Double Clamp Earth Tester
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1 pc
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2
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Clamp (Voltage sensor)
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1 pc
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3
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Clamp (Current sensor)
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1 pc
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4
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User Manual
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1 pc
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5
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Attached disc
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1 pc
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6
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Qualified certificate of product/Warranty card
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1 pc
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7
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Packing list
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1 pc
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8
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1.2V 5# 2000mAh Rechargeable batteries
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4 pcs
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9
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Speical charger
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1 pc
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10
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Foot pin
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4 pcs
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11
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Connecting wire of foot pin
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4 pcs
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12
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Alligator clip
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4 pcs
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13
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bobbin bracket
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4 pcs
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14
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RS232 Serial port Communicaiton wire
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1 pc
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15
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Soft bag
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1 pc
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TE-12B雙鉗口接地電阻測試儀適用于各種設(shè)備及建筑物的接地裝置的接地電阻的測試。如通信設(shè)備、電信電纜、機(jī)房、電力配電線路、電塔輸電線路、加油站、工廠接地網(wǎng)、避雷針等，還可測量各種條件下的土壤電阻率及接地系統(tǒng)泄露電流。
該儀表除了具有傳統(tǒng)打輔助地極測接地電阻的功能外，還具備了無輔助地極測量的獨(dú)特功能，改變了測試接地電阻傳統(tǒng)的測量原理和手段。采用二點(diǎn)極測量原理和利用雙鉗口測量技術(shù)，無需打輔助地極、無需將接地體與設(shè)備隔離，實(shí)現(xiàn)了在線測量。
本機(jī)具有智能化測量功能，不僅能自動(dòng)校準(zhǔn)，而且還能儲(chǔ)存和瀏覽測量結(jié)果，并具有數(shù)據(jù)上傳功能，可在PC機(jī)上進(jìn)行數(shù)據(jù)分析。
主要特點(diǎn)：
1. 采用鉗表式測量方法，無需打輔助地樁，適應(yīng)各種條件下接地電阻測試的需要；
2. 可在線測量，無需將接地體與設(shè)備隔離；
3. 技術(shù)先進(jìn)，具有智能化測試功能；
4. 可在不斷開接地系統(tǒng)的條件下測試泄露電流真有效值；
5. 具有自校準(zhǔn)功能，避免接觸電阻及線阻，對測試結(jié)果造成的影響；
6. 精度高、誤差小、解決了小電阻測量的準(zhǔn)確性問題；
7. 測量功能轉(zhuǎn)換，采用電子開關(guān)進(jìn)行切換以提高系統(tǒng)可靠性；
8. 與上位PC機(jī)進(jìn)行通訊，實(shí)現(xiàn)測量數(shù)據(jù)上傳，便于保存打印；
9. 操作簡單、使用方便、范圍大、寬量程、具有背光照明系統(tǒng)；
10. 塑膠護(hù)套，抗震性好。
1. 四線法接地電阻測量范圍：0.00Ω～19.99KΩ
誤差： 0.00Ω～19.99Ω ≤±3%+3個(gè)字
20.0Ω～19.99KΩ ≤±5%+3個(gè)字
2. 四線+鉗口測量范圍：0.00Ω～1.99KΩ
誤差： 0.00Ω～1.99KΩ ≤±3%+3個(gè)字
3. 雙鉗口測量范圍：0.0Ω～100Ω
誤差： 0.0Ω～19.9Ω ≤±10%+2個(gè)字
誤差： 20Ω～100Ω ≤±20%+2個(gè)字
4. 地阻率測量范圍：0.00～1999KΩm
誤差： 0.01Ωm～1999Ωm ≤±3%+3個(gè)字
誤差： 2.00KΩm～1999KΩm ≤±5%+3個(gè)字
5. 泄漏電流（真有效值）測量范圍：0.0mA～19.9A
誤差： 0.0mA～9.99A ≤±3%+3個(gè)字
誤差： 10.0A～19.9A ≤±5%+3個(gè)字
6. 存儲(chǔ)容量：250組數(shù)據(jù)
7. 工作溫度：-10℃～+55℃
8. 存儲(chǔ)溫度：-30℃～+70℃
9. 電源：6 V d.c.（4 ×1.5V電池 5號AA）或4.8V d.c.（4×1.2V鎳氫充電電池5號AA）
10. 重量：1.0㎏（不含附件）
11. 尺寸：215×115×85㎜
● 接地電阻的測量
四線法測量接地電阻
四線+鉗口測量
雙鉗口測量
● 土壤電阻率
● 泄漏電流
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