KYORITSU 4106 User Manual
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DANGER
The Re measurement cannot be made when a warning message “Voltage
High!!” like shown in Fig.37 appear on the LCD. Voltages more than 15V
exist between the “E” and “S(P)” terminals.
Pressing the “
” Key shifts the display as shown in Fig.38.
The message “Ust=OL V” means the Ust is more than 50V.
To avoid this, make measurements after reducing the earth voltages by
turning off the power supply of the equipment under test etc.
9-1-2 Precise Measurement (4-Wire) *with Earth Test Leads MODEL 7229
The “ES” Terminal is also used with the other terminals used at the 3-wire
Precise measurements. In this case, more precise results can be obtained
because auxiliary earth resistances of the measured earth resistances
are excluded, moreover, resistance of the Test Leads connected to the E
Terminal can be canceled.
Terminals to be used : E, ES, S(P), H(C) Terminals
Test Leads
: connect to the E, ES, S(P), H(C) Terminals
( the “ES” Test Lead should be connected to the
earthed equipment under test where the “E” Test
Lead is connected.)
Auxiliary Earth Spike : 2 pcs
(1) Setting of Wiring System
Select “Wire (4)” with reference to “8-2-2 Setting for Measurement
Method” in this manual.
Fig. 37
Fig. 38