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INTRODUCTION
Musktool-ETCR2100+ Clamp Earth Resistance Tester is our company's technology research and development team on technical quality of the pursuit of excellence, through continuous innovation to improve, upgrade with the old product. Its performance is mainly reflected in:
Musktool-ETCR2100+ Clamp Earth Resistance Tester is widely used in the grounding resistance measurement of the power, telecommunications, meteorology, oilfield, construction and the industrial and electrical equipment. In the measurement of a grounding system with loop, does not require breaking down the grounding down lead, and no need the auxiliary electrode. It is safe, fast and simple in use. The tester can measure ground faults which cannot be measured by traditional methods. It can be used in applications where traditional methods cannot be measured, because the Musktool-ETCR series clamp grounding resistance meter measures the combined value of grounding body resistance and grounding lead resistance. |
Musktool-ETCR2100+ Accessories
Earth tester
Test ring
Manual
Warranty card/Qualification card
Aluminum Case
TECHNICAL SPECIFICATION
Measurement Range & Accuracy
| Measurement | Range | Resolution | Accuracy |
| Resistance | 0.010Ω-0.099Ω | 0.001Ω | ±(1%rdg+0.01Ω) |
0.10Ω-0.99Ω | 0.01Ω | ±(1%rdg+0.01Ω) | |
1.0Ω-49.9Ω | 0.1Ω | ±(1%rdg+0.1Ω) | |
50.0Ω-99.5Ω | 0.5Ω | ±(1.5%rdg+0.5Ω) | |
100Ω-199Ω | 1Ω | ±(2%rdg+1Ω) | |
200Ω-395Ω | 5Ω | ±(5%rdg+5Ω) | |
400-590Ω | 10Ω | ±(10%rdg+10Ω) | |
600Ω-880Ω | 20Ω | ±(20%rdg+20Ω) | |
900Ω-1200Ω | 30Ω | ±(25%rdg+30Ω) |
Technical Parameters
| Function | Description |
| Power Supply | 6VDC 4 PCS of LR6 lkaline batteries |
| Clamp Size | Φ32mm |
| LCD Size | 4 Digits LCD display, Screen: 47mm×28.5mm |
| Range | 0.010Ω~1200Ω |
| Resolution | 0.001Ω |
| Accuracy | ±1%±0.01Ω |
| Data Storage | 99 sets |
| Auto Power-off | Automatically power off after 5 minutes without any operation |
| Power Consumption | ≤50mA， Continuously working for 30 hours |
| Working Environment | -20℃~55℃；20%rh~80%rh |
| Store Environment | -20℃~60℃；below 90%rh |
| Alarm Threshold Setting Range | Resistance：1~199Ω |
| Audible and Visible Alarm | “Beep-beep-beep” alarm sound, alarm symbol flashing, press AL key to turn on/off and setting |
| Interference Signal Recognition | “Beep-beep-beep” indicator, NOISE symbol blinking |
| Protection Level | Double insulation |
| Structural Feature | Clamp CT |
| Shift | Automatic shift |
| External Magnetic Field | ＜40A/m |
| External Electrical Field | ＜1V/m |
| Single Measure Time | 0.5 second |
| Resistance Measure Frequency | ＞1KHz |
| Measured Current Frequency | 50/60Hz Automatic |
| Low Battery Voltage indication | When the battery voltage is lower than 5.3V, the low battery voltage symbol is displayed |
| Storage Full Indication | Storage data full of 99 sets,flashed display "MEM" symbol |
| Over Range Indication | Over range indication “OLΩ”, “L0.01” or “OL A” |
| Tester Weight | 10300g (With batteries) |
| Clamp Dimension | L×W×T：260mm×90mm×66mm |
APPLICATION
Measure the loop resistance
(Base on the formula: R=E/I)
Measure the grounding loop resistance system
(R1 is the measured earth resistance;
R0 is the equivalent resistance of the grounding resistor in parallel)
Measurement Method
Two earth point measurement method
The RA is the measured grounding object, connecting RA and RB (which is the nearly grounding object like as water pipe or
building) with one wire, the tester will test and indicate the concatenation resistance value of the ground
resistance and the test line resistance.
RT=RA+RB+RL
(RT is the tested value, RL is the test line resistance value)
Three earth point measurement method
(1).Connect the RA and RB with a test line; use the Meter to get the first reading R1;
(2).Connect the RB and RC with a test line; use the Meter to get the first reading R2;
(3).Connect the RA and RC with a test line; use the Meter to get the first reading R3.
In the above three steps, the reading measured in each step is the value of the two series grounding resistance. In this way, we can easily calculate the value of each grounding resistance,According to the reading value of R1,R2,R3:
R1=RA+RB; R2=RB+RC; R3=RA+RC
Then: RA=(R1+R3-R2)/2
As the reference points, the grounding resistance values of the other two grounding bodies
RB and RC are:
RB=R1-RA; RC=R3-RA
Field Application
The application of machine room earth resistance measurement
The machine room of telecommunication system normally in the upper deck of the
building. It is hard to use the meg-ohm meter to measure. However, Musktool-ETCR Clamp
meters are very convenient to test.
The application of substation earth resistance measurement
Musktool-ETCR series clamp meter can use to test the situation of contact and connect of circuit.
With the help of one test line, it can be used to test the connect situation of equipment
in station and the grounding system. Single point grounding measurement is allowed for
the measurement of grounding resistance.
The application of building lightning protection grounding system measurement
If the earth poles of the building are independent of each other, the earth resistance can
be measured by clamp to testing any of the earth poles, and the earth resistance can also
be measured by clamp the building roof lightning arrester.When the measured value is
less than the allowable value, the earth electrode is qualified.If the measurement value
of the clamp meter is larger than the allowable value, please use single earth point method
to measurement.
Related Series Model
| Model | Clamp Size | Resistance Range | Current Range | Data Upload | Alarm | Data Save | Type |
| Musktool-ETCR2000 | 55*32mm | 0.01-1000Ω | / | / | Yes | Yes | Basic |
| Musktool-ETCR2000A | 55*32mm | 0.01-200Ω | / | / | Yes | Yes | Utility |
| Musktool-ETCR2000C | 55*32mm | 0.01-1000Ω | 0.00mA-30.0A | / | Yes | Yes | Multifunction |
Musktool-ETCR2000+ | 65*32mm | 0.01-1200Ω | / | Optional | Yes | Yes | Basic |
| Musktool-ETCR2000A+ | 65*32mm | 0.01-200Ω | / | Optional | Yes | Yes | Utility |
| Musktool-ETCR2000B+ | 65*32mm | 0.01-1200Ω | / | Optional | Yes | Yes | Anti-explosion |
| Musktool-ETCR2000C+ | 65*32mm | 0.01-1200Ω | 0.00mA-20.0A | Optional | Yes | Yes | Multifunction |
| Musktool-ETCR2100+ | Φ32mm | 0.01-1200Ω | / | Optional | Yes | Yes | Basic |
| Musktool-ETCR2100A+ | Φ32mm | 0.01-200Ω | / | Optional | Yes | Yes | Utility |
| Musktool-ETCR2100C+ | Φ32mm | 0.01-1200Ω | 0.00mA-20.0A | Optional | Yes | Yes | Multifunction |
| Musktool-ETCR2200 | 65*32mm | 0.01-1500Ω | 0.00mA-40.0A | Yes | Yes | Yes | High Performance |
