產品簡介
點擊下載: MEWOI4000C New Manual
MEWOI4000C接地電阻/土壤電阻率測試儀,採用精密4線法、3線法和簡易2線法測量接地電阻。接地電阻量程:0.00Ω~30.00kΩ,土壤電阻率量程:0.00Ωm~9000kΩm,接地電壓量程:AC 0~600V。通過FFT(快速傅立葉變換)技術、AFC(自動頻率控制)技術,具有獨特的抗干擾能力和環境適應能力,重複測試一致強,確保測量的精度、穩定性和可靠性。 MEWOI4000C接地電阻/土壤電阻率測試儀由主機、監控軟件、測試線、輔助接地棒、通訊線等組成。主機超大LCD顯示,白屏背光,棒圖指示,一目了然。同時能存儲300組數據,通過監控軟件實現歷史查詢與在線實時監測功能,動態顯示,告警指示,具有歷史數據讀取、查閱、保存、報表、打印等功能。 |
一、量程及精度
測量功能 | 測量範圍 | 精 度 | 分辨力 |
接地電阻(R) | 0.00Ω~30.00Ω | ±2%rdg±3dgt | 0.01Ω |
30.0Ω~300.0Ω | ±2%rdg±3dgt | 0.1Ω | |
300Ω~3000Ω | ±2%rdg±3dgt | 1Ω | |
3.00kΩ~30.00kΩ | ±4%rdg±3dgt | 10Ω | |
土壤電阻率(ρ) | 0.00Ωm~99.99Ωm | (ρ=2πaR a:1 m100m;π=3.14) | 0.01Ωm |
100.0Ωm~999.9Ωm | 0.1Ωm | ||
1000Ωm~9999Ωm | 1Ω | ||
土壤電阻率(ρ) | 10.00kΩm~99.99kΩm | (ρ=2πaR a:1 m~100m;π=3.14) | 10Ω |
100.0kΩm~999.9kΩm | 100Ω | ||
1000kΩm~9000kΩm | 1 kΩm | ||
接地電壓 | 交流 0.0~600V | ±2%rdg±3dgt | 0.1V |
二、其它參數
功 能 | 二三四線測量接地電阻、土壤電阻率;接地電壓測量 |
電 源 | DC 9V (鹼性乾電池LR14 1.5V 6節,連續待機300小時) |
量 程 | 接地電阻:0.00Ω~30.00kΩ |
土壤電阻率:0.00Ωm~9000kΩm | |
接地電壓:0V~600V | |
測量方式 | 精密4線、3線法測量、簡易2線測量接地電阻 |
測量方法 | 接地電阻:額定電流變極法,測量電流20mA Max |
土壤電阻率:四極法(溫納法) | |
對地電壓:平均值整流(P(S)-ES接口間) | |
測試頻率 | 128Hz/111Hz/105Hz/94Hz(AFC) |
短路測試電流 | 交流 20mA 最大值 |
開路測試電壓 | 交流 40V 最大 |
測試電壓波形 | 正弦波 |
電極間距範圍 | 可設定1m~100m |
換 檔 | 接地電阻:0.00Ω~30.00kΩ全自動換檔 |
土壤電阻率:0.00Ωm~9000kΩm全自動換檔 | |
背 光 | 可控白屏背光,適合昏暗場所使用 |
顯示模式 | 4位超大LCD顯示,白屏背光 |
測量指示 | 測量中LED閃爍,LCD倒計數,進度棒圖指示 |
LCD尺寸 | 128mm×75mm |
LCD顯示域 | 124mm×67mm |
儀表尺寸 | 215mm×178mm×83mm |
標準測試線 | 4條:紅色20m,黑色20m,黃色10m,綠色10m各1條 |
簡易測試線 | 2條:紅色1.6m,黑色1.6m各1條 |
輔助接地棒 | 4根:Φ10mm×230mm |
測量時間 | 對地電壓:約3次/秒 |
接地電阻、土壤電阻率:約15秒/次 | |
測量次數 | 5000次以上(短路測試,測1次,停30秒再測) |
線路電壓 | AC 600V以下測量 |
通訊接口 | 具有USB接口,軟件監控,存儲數據可以上傳電腦,保存打印 |
通訊線 | USB通訊線1條,長1.5m |
數據存儲 | 300組,“MEM”存儲指示,顯示“FULL”符號表示存儲已滿 |
數據保持 | 保持數據時“HOLD”符號指示 |
數據查閱 | 查閱數據時“READ”符號指示 |
溢出顯示 | 超量程溢出時“OL”符號指示 |
干擾測試 | 自動識別乾擾信號,干擾電壓高於5V時“NOISE”符號指示 |
輔助接地測試 | 具有輔助接地電阻值測試功能, 0.00KΩ~30kΩ(100R+rC<50kΩ,100R+rP<50kΩ) |
報警功能 | 測量值超過報警設定值時,“嘟--嘟--嘟--”報警提示 |
電池電壓 | 當電池電壓降到約7.5V時,電池電壓低符號顯示,提醒更換電池 |
工作電流 | 待機: 約20mA(背光關閉) |
開機開背光:約45mA(背光關閉25mA) | |
測量:約100mA(背光關閉) | |
質 量 | 儀表:約950g |
測試線:約1560g | |
輔助接地棒:約935g(4根) | |
工作溫濕度 | -10℃~40℃;80%rh以下 |
存放溫濕度 | -20℃~60℃;70%rh以下 |
过载保护 | 测量接地电阻:C(H)-E、P(S)-ES各端口间AC 280V/3秒 |
绝缘电阻 | 20MΩ以上(电路与外壳之间500V) |
耐 压 | AC 3700V/rms(电路与外壳之间) |
电磁特性 | IEC61326(EMC) |
适合安规 | IEC61010-1(CAT Ⅲ 300V、CAT IV 150V、污染等级2);IEC61010-031; IEC61557-1(接地电阻);IEC61557-5(土壤电阻率);JJG 366-2004。 |
接地電阻測試儀 選型表
點擊“藍色”型號鏈接到產品詳細參數
點擊
模型 | 線夾尺寸 | RS232 | 資料存儲 | |||
0.01Ω-200Ω | 0.001Ω | 65毫米×32毫米 | 99套 | |||
ø32毫米 | ||||||
MEWOI3000B | 55毫米×32毫米 | |||||
MEWOI3000 | 0.01Ω-1000Ω | 0.001Ω | 55毫米×32毫米 | 99套 | ||
0.01Ω-1200Ω | 0.001Ω | 65毫米×32毫米 | 可選擇的 | 99套 | ||
ø32毫米 | ||||||
MEWOI3000D | 0.01Ω-1000Ω 0.00-30.00A | 0.001Ω,0.05mA | 55毫米×32毫米 | 99套 | ||
0.01Ω-1200Ω 0.00-20.00A | 0.001Ω,0.05mA | 65毫米×32毫米 | 可選擇的 | 99套 | ||
ø32毫米 | ||||||
0.01Ω-1500Ω 0.00-40.00A | 0.001Ω,0.05mA | 65毫米×32米 米 | √ | 99套 | 可充電電池 | |
1,鉗形法:0.010Ω~200Ω 2,2/3/4線法:0.1Ω~20.00kΩ 3,土壤電阻率:0.00Ωm~9999kΩm 4,接地電流:0.000mA~20.00A | 0.001Ω 0.001mA | 65毫米×32米 米 | USB只做充電使用 | 500組 | 可充電電池 | |
1,鉗形法:0.010Ω~1600Ω 2,2/3/4線法:0.1Ω~200.00kΩ 3,土壤電阻率:0.00Ωm~9999kΩm 4,接地電流:0.000mA~45.00A | 0.001Ω 0.001mA | 65毫米×32米 米 | USB只做充電使用 | 500組 | 可充電電池 | |
0.01Ω-100Ω | 0.01Ω | 配寘RS485通訊介面,提供標準的MODBUS-RTU通訊協定 | × | |||
0.01Ω-100Ω | 0.01Ω | 60毫米*30毫米 (關閉) | × | 液晶顯示,報警功能 | ||
0.01Ω-200Ω | 0.01Ω | 56毫米×26毫米 | 有線網路:RS232、RS485標準通訊協定 無線網路:RS232、RS485、GSM通信協議 | × | ||
0.01Ω-200Ω | 0.01Ω | 56毫米×26毫米 | × | 液晶顯示,報警功能 | ||
0.01Ω~2000Ω | 0.01Ω | 2/3線量測, 線上的 | ||||
0.01Ω~2000Ω | 0.01Ω | 2/3線量測 | ||||
0.01Ω~2000Ω; 0~600伏 | 0.01Ω,1V | √ | 400臺 | 2/3線接地電阻/電壓量測 | ||
0.01Ω~2000Ω; 0~600伏 | 0.01Ω,1V | √ | 400臺 | 2/3線接地電阻/電壓量測 | ||
接地電阻:0.01Ω~30.00KΩ; 土壤電阻率:0.01Ωm~9000KΩm; 0~600伏 | 0.01Ω,0.01Ωm,1V | √ | 300套 | 2/3/4線量測接地電阻、土壤電阻率和接地電壓 | ||
MEWOI4200D | 接地電阻:0.01Ω~30.00KΩ; 土壤電阻率:0.01Ωm~9000KΩm; 0~600伏 | 0.01Ω,0.01Ωm,1V | √ | 300套 | 2/3/4線量測接地電阻、土壤電阻率和接地電壓 | |
接地電阻:0.01Ω~30.00KΩ;交流洩漏電流:0.00mA~600A; | 0.01Ω,0.01Ωm,0.01A,0.1V | ø68毫米 | √ | 2000臺 | ||
接地電阻:0.01Ω~30.00KΩ;交流洩漏電流:0.00mA~600A; | 0.01Ω,0.01Ωm,0.01A,0.1V | ø68毫米 | √ | 2000臺 | ||
接地電阻:0.10Ω~200Ω(4線夾法) 接地電阻(R):0.10Ω~20KΩ 土壤電阻率(ρ)0kΩm~9000kΩm 交流電流(A~)1mA~500.0A 接地電壓(V~)0.0V~200.0V | 0.01Ω,0.01Ωm,0.01mA,0.1V | ø68毫米 | √ | 100套 | 解列自由塔接地電阻測試儀 |
TECHNICAL SPECIFICATION
Function | Measurement of 2/3/4-pole earth resistance, soil resistivity, earth voltage, AC voltage |
Power Supply | DC 9V(Zi-Mn dry battery R14S 1.5V 6 PCS, continuous standby for 300 hours ) |
Measurement Range | Earth Resistance: 0.00Ω-30.00kΩ |
Soil Resistivity: 0.00Ωm-9000kΩm | |
Measuring Mode | Precise 4-pole measurement, 3-pole measurement, simple 2-pole measurement |
Measuring Method | Earth Resistance: rated current change-pole method, measurement current 20mA Max Soil Resistivity: 4-pole measurement (Wenner method) Earth Voltage: average rectification(between P(S)-ES) |
Test Frequency | 128Hz/111Hz/105Hz/94Hz(AFC) |
Short-circuit Test Current | AC 20mA max |
Open-circuit Test Current | AC 40V max |
Test Voltage Wave | Sine wave |
Electrode Distance Range | Can be set 1m-100m |
Shift | Earth resistance: 0.00Ω-30.00kΩ, automatic shift |
Soil Resistivity: 0.00Ωm-9000kΩm, automatic shift | |
Backlight | Blue screen backlight, suitable for dim places |
Display Mode | 4-digital super-large LCD display, blue screen backlight |
Measuring Indicator | During measurement, LED flash indicator, LCD count down display, progress bar indicator |
LCD Frame Dimension | 128mm×75mm |
LCD Window Dimension | 124mm×67mm |
Dimension | L×W×H: 215mm×190mm×95mm |
Standard Test Wire | 4 wires: each for red 20m, black 20m, yellow 10m, and green 10m |
Simple Test Wire | 2 wires: each for red 1.6m and black 1.6m |
Auxiliary Earthing Rod | 4 wires: Φ10mm×150mm |
Measuring Rate | Voltage to ground: about 3 times/second |
Earth resistance, soil resistivity: about 5 seconds/time | |
Measuring Times | Over 5000 times (Short-circuit test, interval time should be at least 30 seconds) |
Circuit Voltage | below AC 600V |
RS232 Interface | Possess RS232 interface, software supervision, storage data can be uploaded to computer, saved or printed. |
Communication Wire | One piece of RS232 communication wire, with length 1.5m |
Data Storage | 300 sets, “MEM” icon storage indicator, flash display “FULL” icon to indicate storage is full |
Data Hold | Data hold function: “HOLD” icon display |
Data Read | Data read function: “READ” icon display |
Overflow Display | Exceeding measuring range overflow function: “OL” icon display |
Interference Test | Recognize interference signal automatically, “NOISE” icon display when interference voltage exceed 5V |
Auxiliary Earthing Test | Can measure auxiliary earth resistance, 0.00KΩ-30kΩ(100R+rC<50kΩ, 100R+rP<50kΩ) |
Alarm Function | When measuring value exceeds alarm setting value, there is “Toot-toot-toot” alarm hint |
Battery Voltage | When battery voltage decreases to about 7.5V, battery voltage low icon will display, reminding to replace battery. |
Power Consumption | Standby: about 20mA (Backlight shut off) |
Boot and with backlight: about 45mA (25mA without backlight) | |
Measurement: about 100mA (Backlight shut off) | |
Weight | Total weight: 4.5kg (including package),Tester: 1443g (including battery),Auxiliary earthing rods: 935g (4pcs) |
Tester | 1 PC |
Tester Bag | 1 PC |
Auxiliary Earthing Rod | 4 PCS |
Standard testing Wire | 4 wires: each for red 20m, black 20m, yellow 10m, and green 10m |
Simple testing Wire | 2 wires: each for red 1.6m and black 1.6m |
Zinc-manganese Dry Battery | 6 PCS (R14S 1.5V) |
Monitoring Software Disk | 1 Copy |
RS232 Communication Cable | 1 PC |
Manual/Warranty Card/Qualification Certificate | 1 Copy |