Fluke 1625 user manual Earth/Ground Tester, Specifications

			Earth/Ground Tester
			Specifications
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 RA 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

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