Lutron EARTH METER ET3000
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Description
This earth tester / earth resistance meter is used to measure lightning-arresters or ground connection lightning-arresters for all kind of buildings. earth tester possesses a hermetic case and fulfils all the VDE 0413 safety requirements for the technical service operators. The earth tester is appropriate for measuring ground electrodes, lightning-arresters or little earth resistance systems as well as for measuring power resistance, conductive elements and coupling components.
Modern switching circuits reduce the influences of both pressure and earth resistance of the surrounding earth electrodes. Calibration of the earth tester with the adjoining control mechanism avoids the loss of precision at measuring.
Frequency control of 850 Hz avoids the influence of scattered currents of the net and its harmonic elements. Besides, this tester has a filter incorporated to delete distorted signs. The earth tester is delivered with the factory calibration however it can also have ISO calibration certificate.
– 3 ½ positions LCD display (máx. 1999)
– High accuracy
– Battery indicator / of range superation
– Data Hold
– Safety: IEC-1010-1 y CAT III 300 V
– Very good quality
– Components: checking cables: 15 m of red
cable, 10 m of yellow cable, 5 m of green
cable, ground needles, batteries and user
manual.
– Optional ISO calibration certificate.
Measuring earth resistance.
| Technical specifications | |||
| Functions | Range | Resolution | Accuracy |
| Earth resistance | 0 … 19.99/ 0 … 199/ y 0 … 1999 Ω |
10/ 100 mΩ / 1 Ω | ± 2% + 2 positions |
| AC Stress | 0 … 200 V AC 50/60 Hz |
0,1 V | ± 3% + 2 positions |
| Lower measurement limit. | 0.01 Ω | ||
| Current of measurement | 2 mAeff / rms | ||
| Response time | aprox. 2.5 s | ||
| Measuring quota | 4 s | ||
| Frequency | 820 Hz | ||
| Overload range | in case of overlaoad, „1“ is shown | ||
| Power | 6 x 1.5 V batteries | ||
| Dimensions | 160 x 120 x 65 mm | ||
| Weight | 560 g | ||
| Safety | IEC- 1010- 1; EN 61010- 1 instalation category: III |
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| EMV | EN 50081- 1; EN 50082- 1 corresp. DIN/ VDE 0413 part 7 |
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