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Related Manuals for MEWOI MEWOI4000
Summary of Contents for MEWOI MEWOI4000
- Page 1 Digital Earth Resistance Tester...
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Page 3: Table Of Contents
CONTENT Warning ....................1 I．Introduction ..................3 II．Measuring Range and Accuracy ........... 4 III．Technical Specifications ..............4 IV．Tester Structure ................6 V．Measuring Principle ................ 7 VI. Function Quick Check ..............8 VII. Operation Methods ................. 8 1．Switch On/Off ................8 2．Battery Voltage Check .............. -
Page 4: Warning
Warning Thanks for your purchase of MEWOI4000 Digital Earth Resistance Tester of our company. For better use of the product, please make sure: ---read this user manual in details. ---abide by the safety regulations and precautions strictly. The tester is conforming to IEC61010 on design, production and test. - Page 5 sparkle maybe cause explosion. During usage of tester, please stop using it when exposed metal is caused by broken enclosure or testing wires. Please don’t keep or store the tester in the spot with high-temperature and moisture, or condensation, and under direct daylight radiation for a long time.
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Page 6: I．introduction
MEWOI4000 Digital Earth Resistance Tester has a unique function of wire resistance verification ， more accurate on measuring on-site low value earth ground resistance, which can avoid error caused by resistance change due to prolonged usage of testing wire;... -
Page 7: Measuring Range And Accuracy
II．Measuring Range and Accuracy Measuring Measuring Accuracy Resolution Functions Range 0.01Ω～20Ω 0.01Ω ± 1%rdg± 3dgt (Auxiliary earth 0.1Ω～200Ω 0.1Ω Earth Ground ground resistance Resistance 100Ω±5%，voltage 1Ω～2000Ω 1Ω to ground＜10V) Earth Ground 0～600V AC ± 1%rdg± 3dgt Voltage (Remark: 23℃± 5℃，below 75%rh) III．Technical Specifications Earth ground resistance measurement, voltage to Function... - Page 8 Simple Testing 2 wires: each for Red 1.6m and Green 1.6m Wire Auxiliary 2 PCS：Φ10mm×150mm grounding rod Voltage to ground: about 3 times/second; earth Measuring Rate ground resistance: about 5 seconds/time Over 5000 times Measuring (Measuring 10Ω for one time on 20Ω range and take a Times pause for 25s) Measuring voltage to ground: measuring below AC...
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Page 9: Tester Structure
Measuring earth ground resistance: between each Overload Protection interfaces of E-P、E-C, AC 280V/3 seconds Insulation Over 10MΩ(between circuit and enclosure it is 500V) Resistance Withstanding AC 3700V/rms (Between circuit and enclosure) Voltage Electromagnetic Wireless frequency electromagnetic field Features IEC61010-1 、 IEC1010-2-31 、 IEC61557-1,5 、 Protection Type IEC60529(IP54)、Pollution etc. -
Page 10: Measuring Principle
1. LCD 2. Button area 3. Rotary switch for selecting function 4. RS232 interface 5. Interface of testing wires 6. C(H)interface: Current electrode 7. P(S) interface: Voltage electrode 8. E interface: Earth electrode 9. Testing wires 10. Auxiliary grounding rod 11. -
Page 11: Function Quick Check
E5：Variation due to contact electrode resistance E7：Variation due to system frequency change E8：Variation due to system voltage change VI. Function Quick Check FUCTION rotary Switch on/off ,Function shift, Switch gear switch Up/down arrow Data read/numerical value settings button Backlight button Backlight control START button Start measuring... -
Page 12: 4．Grounding Voltage Measurement
Please try to insert auxiliary grounding rod into moist soil. In case of dry soil, sand, or gravel land, it requires adding water to keep auxiliary Note grounding rod inserted place wet. In case of concrete place, it shall keep auxiliary grounding rod flat and add water, and cover wet towels on earth ground rod before measurement. -
Page 13: 5．Wire Resistance Verification
5．Wire Resistance Verification In order to improve precision and stability of field measurement of earth ground resistance, avoid error due to wire resistance change due to prolonged usage of testing wires; avoid error due to testing wire that is failed to be fully inserted into tester interface or by poor contact;... -
Page 14: 7．Simple Measurement
There are 3 types of display modes for earth ground resistance measurement: P：---- Average Value Display H：---- Maximum Display L：---- Minimum Display The default display on booting is average value, and press MODE button to switch display mode. Precision measurement earth ground resistance adopts three-wire connection. - Page 15 Simple method for measurement of earth ground resistance, its reading on Tester is the total value of earth ground resistance value of measured grounding object and that of commercial grounding object, namely: RE=RX＋re In which: RE is the Tester reading value; RX is the earth ground resistance value of measured grounding object;...
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Page 16: 8．Backlight Control
Simple method for measurement of earth ground resistance also needs to confirm that voltage value to ground must be lower than 10V. If the voltage value is over 10V, the measurement value of earth ground Note resistance may cause error and at that time, it shall firstly cut off power on measured grounding equipment and make resistance measurement after the grounding voltage is decreased. -
Page 17: 12．Data Upload
3 seconds) to enter data reading, press button to select reading data group number by step value 1, press button constantly to select reading data group number by step value 10, press button to read the maximum, minimum and average value of this group of data, and then press button to exit from reading. -
Page 18: Accessories
IX．Accessories Tester 1 PC Tester Bag 1 PC Auxiliary Grounding Rod 2 PCS Monitoring Software Disk 1 Copy RS232 Communication Cable 1 PC Testing Wire 3 PCS Simple testing wire 2 PCS Zinc-manganese dry battery 6 PCS（R14S 1.5V） Manual/Warranty card/Qualification 1 Copy Certificate -15-... - Page 20 esting pecialist...
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