11.07.2015 Views

EIT 810 - Multimetrix

EIT 810 - Multimetrix

EIT 810 - Multimetrix

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English- the simplified measurement method using only 1 auxiliary rod: 2P method3P measurementmethod1 – connect the cables and auxiliary rods remembering first of all to disconnectthe earthing strip of the installation:■ connect the green test cable to terminal E, the yellow cable to terminal P, andthe red cable to terminal C.■ place the auxiliary rods in line with the rod of the earth electrode to bemeasured.■ connect the Green cable E with the earth electrode to be measured, the yellowP and red C cables with the auxiliary rods as shown in figure 1 below:2P measurementmethod2 – check the earth voltage■ set the rotary switch to the EARTH VOLTAGE position.■ start the measurement by pressing the TEST key.■ the earth voltage will then be indicated on the ACV scale of the galvanometer.Important:If the measured earth voltage is greater than 10 VAC, the earth electroderesistance measurement will undoubtedly be erroneous.3 – measure earth electrode resistance■ set the rotary switch to EARTH RESISTANCE■ select the probable measurement range on the range selector (item 4).■ start the measurement by pressing the test button and read the result on thedisplay unit.to carry out a stability measurement (over a longer period), press and turn thetest button.■ the FUNCTION indicator must be lit, proof that the measurement current circuitis correctly established.This method is an alternative to the 3P method only when the resistance of theearth electrode is greater than 10 Ω or when it is impossible to place two auxiliaryrods in line.Attention, this method will yield an approximate earth resistance value.1 – connect the cables and auxiliary rods without forgetting to disconnect theearthing strip of the installation:■ connect the green test cable to terminal E and the double red cable to terminalsP and C of the instrument.■ place the auxiliary rod where it is possible to place a rod.■ connect the Green cable/E to the earth electrode to be measured and the redcable / P&C to the auxiliary rod as shown by figure 2 below:Analog earth & insulation tester

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