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Earth/Ground Tester
Specifications
11
Operation: Central rotary switch and function keys
Working temperature range: -10 °C … +50 °C
Operating temperature range: 0 °C … +35 °C
Nominal temperature range: 18 °C … +28 °C
Storage temperature range: -30 °C … +60 °C
Note
The chart of four temperature ranges for the instrument exist to sat-
isfy European Standards requirements; the instrument can be used
over the full Working temperature range by using the temperature co-
efficient to calculate accuracy at the ambient temperature of use.
Temperature coefficient: ± 0.1 % of range / Kelvin
Operating errors: refer to operating temperature range and RH
< 20 RE, RS < 100 RE
The maximum percentage operating error within the measurement range does
not exceed ± 30 % with the measured value as fiducial value, as determined in
accordance with TABLE 1.
The operating error applies under the rated operating conditions given in
IEC1557-1 and the following:
• injection of series interference voltages with system frequencies of
400 Hz, 60 Hz, 50 Hz, 16
2
/3 Hz or with d.c. voltage respectively
across the terminals E (ES) and S. The r.m.s. value of the series inter-
ference voltage shall be 3 V;
• resistance of the auxiliary earth electrode and of the probes: 0 to 100 x
R
A
but ≤ 50 kΩ;
• system voltages between 85 % and 110 % of the nominal voltage and
between 99 % and 101 % of the nominal system frequency for meas-
uring equipment with a mains supply and/or measuring equipment de-
riving its output voltage directly from the distribution system.
Limits of error: refer to nominal temperature range
Climate class: C1 (IEC 654-1), -5 °C...+45 °C, 5 %...95 % RH
Type of protection: IP 56 for case, IP 40 for battery door according to
EN 60529