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Kusam Meco KM 4237ER DOUBLE CLAMP MULTI-FUNCTION GROUNDING RESISTANCE TESTER
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Kusam Meco KM 4237ER DOUBLE CLAMP MULTI-FUNCTION GROUNDING RESISTANCE TESTER
Kusam Meco KM 4237ER DOUBLE CLAMP MULTI-FUNCTION GROUNDING RESISTANCE TESTER
The KM 4237ER is a high-precision double clamp grounding resistance tester designed for fast and accurate on-line measurement without auxiliary grounding. It supports 2-wire, 3-wire, 4-wire, and double clamp methods, making it highly versatile. Featuring a large LCD backlit display and advanced microprocessor control, it enables real-time testing without disconnecting the grounding system. Ideal for use in telecom, power systems, oil fields, gas stations, and industrial grounding networks.
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₹ 89,999.00
(GST inclusive price) i₹1,16,500.00
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Product Specifications
| Function | Ground resistance、 Soil resistivity、DC resistance Ground voltage AC current |
| Ambient temperature and humidity | 23℃±5°C, below 75%rh |
| Interference voltage | <20V (should be avoided) |
| Interference current | <2A (should be avoided) |
| Measure R electrode spacing | a>5d |
| Measured pelectrode spacing | a>20h |
| Power | DC 6V 4.5Ah lead-acid battery lasts more than 100 hours standby |
| Backlight | Controllable backlight, suitable for use in dim places |
| measurement mode | Precise four-wire, three-wire measurement, simple two-wire measurement, Selection method, double clamp method for measuring grounding resistance |
| Measurement methods | 2.3.4-wire method measurement: Polarization method, measuring current 20mA Max Soil resistivity: four-pole method Selectivity Measurement: Polarization Method, Measuring Current 20mA Max Double clamp method: non-contact mutual inductance measurement method, test current 1mA Max DC resistance: polarization method AC current: average rectification (clamp) Ground Voltage: Average Rectification (between S-ES interface) |
| Test voltage waveform | Sine wave |
| Test frequency | 128Hz |
| Short circuit test current | AC 20mA max |
| Open circuit test voltage | AC 28V max |
| Electrode spacing range | 1m~100m |
| Display mode | 4-bit large LCD display, with backlight |
| Measurement instructions | LED flashing indicator during measurement |
| LCD size | 111mm×68mm |
| LCD display field | 108mm×65mm |
| Instrument size | L/W/H: 277.2mm×227.5mm×153mm |
| Clamp size | L/T/H 101mm×27mm×214mm |
| Test line | 4 strips red 15m black 15m, yellow 10m green 10m each one |
| Simple test line | 2stripsi yellow 1.5mm green 1.5m each one |
| Auxiliary Grounding rod | 4PCS $10mm×200mm |
| Current clamp | 2PCS: 44 mm Banana plug |
| Current clamp diameter | $50mm |
| Current clamp lead | Length 2m |
| Measure time | AC current: about 2 times/sec; Ground voltage: about 2 times/sec; grounding resistance, soil resistivity: about 7 seconds/time |
| Line voltage | Measurement below AC100V (ground voltage measurement function cannot be used to measure commercial power) |
| USB interface | With USB interface, storage data can be uploaded to the computer, save and print |
| Communication Line | One USB communication line, 1.5m long |
| Data storage | 500 groups, "MEM" storage indicates, flashing "FULL" symbol indicates that the memory is full |
| Data review | Data review function: "MR" symbol display |
| Overflow display | Over-range overflow function: "OL" symbol display |
| Current clamp low current indication | When measuring by the selection method or the double-clamp method, when the current signal received by the current clamp A is lower than 0.5 mA, the symbol is displayed, and at this time, the clamping direction of the current clamp A should be checked. |
| Interference test | Automatic identification of interference signals, "NOISE" symbol indication when the interference voltage is higher than 5V |
| Auxiliary grounding test | With auxiliary ground resistance test function, 0.00ΚΩ - 30k (Rh max = 3ΚΩ +100R <500, Rs max = 32 +1000 <500) |
| Alarm function | Alarm when the measured value exceeds the alarm setting value |
| Battery voltage | Real-time display of battery power, reminding timely charging when battery voltage is low |
| Automatic Shutdown | "APO" Indicates, automatic Shutdown After 15 Minutes |
| Power consumption | Standby: 40mA Max(Backlight off) |
| Turn on backlight: 43mA Max | |
| measuring: 120mA Max(Backlight off) | |
| Weight | Instrument: 2450g(including battery) |
| Current clamp: 940g(2PCS) | |
| Test lines: 1300g(including simple test line) | |
| Auxiliary grounding rod: 850g(4PCS) | |
| Working temperature and humidity | -10℃~40℃, below 80%rh |
| Storage temperature and humidity | -20℃~60℃ below 70%rh |
| Overload protection | Grounding resistance: AC 280V/3 seconds between H-E and S-ES ports |
| Insulation resistance | More than 20MΩ(500V between circuit and housing) |
| Pressure resistance | AC 3700V/rms(between circuit and housing) |
| Test Function | Range | Accuracy | Resolution |
| 2、3、4 wire method for measuring ground | 0.000~29.99Ω | ±2%rdg±5dgt(remark 1) | 0.01Ω |
| 30.00~299.90 | ±2%rdg±3dgt | 0.1Ω | |
| 3000~2999Ω | ±2%rdg±3dgt | 1Ω | |
| 3.00ΚΩ~30.00ΚΩ | ±2%rdg±3dgt | 10Ω | |
| DC resistance(Re) | 0.00~299.9Ω | +2%rdg±3dgt | 0.1Ω |
| 3000~2999Ω | ±2%rdg±3dgt | 1Ω | |
| 3.00ΚΩ~30.00ΚΩ | ±2%rdg±3dgt | 10Ω | |
| Selection method for measuring | 0.00Ω~29.99Ω | ±2%rdg±5dgt(remark 1) | 0.01Ω |
| 30.0Ω~299.9Ω | ±2%rdg±3dgt | 0.1Ω | |
| 300Ω ~ 3000Ω | ±2%rdg±3dgt | 1Ω | |
| Double clamp method for measuring | 0.01Ω~0.99Ω | ±10%rdg±10dgt | 0.01Ω |
| 1.0Ω~9.9Ω | 0.1Ω | ||
| 10Ω ~ 100Ω | 1Ω | ||
| Soil resistivity(p) | 0.002m~99.992Ωm | p=2παR (remark 2) | 0.01ΩΜ |
| 100.00Ωm~999.92Ωm | 0.12Ωm | ||
| 10000Ωm~9999Ωm | 1Ωm | ||
| 10.00Ωm~99.99Ωm | 10Ωm | ||
| 100.0Ωm~999.9Ωm | 100Ωm | ||
| 1000Ωm~9999Ωm | 1kΩm | ||
| Ground voltage | AC 0.00~100.0V | ±2%rdg±3dgt | 0.01V |
| AC current | AC 0.0mA~1000A | ±2%rdg±3dgt | 0.1mA |
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