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Partial Discharge
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Earth Resistance Testers
> Sonel MRU-21 Earth Resistance Tester - CATIV
01423
https://www.pro-test.co.nz/shop/T%26M+Products/Earth+Resistance+Testers/Sonel+MRU-21+Earth+Resistance+Tester.html
Sonel MRU-21 Earth Resistance Tester - CATIV
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Possible measurements:
earth resistance measurment with 3-pole method,
measurement of continuity of equipotential bondings and protective conductors with auto-zero function - with current 200 mA,
resistance measurement using 2-pole method.
Electric security:
type of insulation: double, according to EN 61010 - 1and IEC 61557
measurement category: CAT IV 300 V acc. to EN 61010 - 1
protection class acc. to EN 60529: IP54
Rated operational conditions:
operation temperature: -10...+55°C
storage temperature: -20...+70°C
humidity: 20...80%
Other technical data:
LCD display: segment, backlit
interface: USB,
number of measurements carried out of set of batteries: > 1000 (5 Ω, 2 meas./min.)
warranty: 2 years
dimentions: 288 x 223x75 mm
weigth: 1,4 kg
View Data Sheet
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Electric security:
Rated operational conditions:
Other technical data: