JUPITER
IT - 17
5.6. OVERALL EARTH RESISTANCE WITHOUT RCD TRIPPING
This function is performed in compliance with standards CEI 64-8 612.6.3, IEC/EN61557-6
and allows measuring the impedance of the fault loop, comparable to the overall earth
resistance in TT systems (see § 9.2).
CAUTION
The maximum input AC voltage is 690V to earth and between inputs. Do
not measure voltages exceeding the limits given in this manual.
Exceeding voltage limits could result in electrical shocks to the user and
damage to the instrument.
The measurement of overall earth resistance involves the circulation of a
current of approx.
15mA
between phase and earth according to the
technical specifications of the instrument (see § 7.1). This could cause the
tripping of possible protections with lower tripping currents.
Fig. 17: Use of the instrument for measuring overall earth resistance with Schuko cable.
Fig. 18: Use of the instrument for measuring overall earth resistance with leads