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UT521 USERS MANUAL

6.2 Simple measurement(use simple 2-Wires test leads for measurement):

This method will be used when the auxiliary earth stake cannot be used. Use

the expose earth resistance object from the ground as earth, like metal water

bath, water pile, wire ground, building earth, also can use 2-wires test leads

method (E and P&C terminals).Connection as figure 3:

figure 3

Primary

Side

Red

Green

Secondary

Side

Supply Transformer

Reference Earthed

Electrode

Earthed Electrode

Under Test

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