Technical Specifications; Definitions - Amprobe GP-2A Manual De Uso

9. TECHNICAL SPECIFICATIoNS

9.1 Definitions

The standard introduces the uncertainty inherent uncertainty IEC/EN61557-5 overall
(operational). The intrinsic uncertainty is the uncertainty of the instrument when it is used in
reference conditions.
The operating error applies under the rated operating conditions given in IEC1557-1 and the
following:
• following: injection of series interference voltages across the terminals E (ES) and S with a
RMS value of 3V and system frequencies of:
o 0Hz (DC)
o 16 + 2/3 Hz
o 50Hz
o 60Hz
o 400Hz
• resistance of the auxiliary earth electrode and of the probes: 0 to 100 x RA but ≤ 50 kΩ
The maximum percentage operating error within the measurement range does not exceed ± 30
% with the measured value as fiducially value, as determined in accordance with the following
TABLE:
Intrinsic
uncertainty or
influence quantity
Intrinsic
uncertainty
Position
Supply voltage
Temperature
Series
interference
voltage
Resistance of
the probes and
auxiliary earth
eletrodes
System frequency
System voltage
Operating
uncertainty
A = intrinsic uncertainty
En = variations
R = routine test
T = type test
Reference conditions or
specified operating range
Reference conditions
Reference position ± 90°
At the limits stated by the
manufacturer
0 °C and 35 °C
See 4.2 and 4.3
0 – 100 x RA but ≤50 kΩ
99 % and 101 % of the
nominal frequency
85 % and 110 % of the
nominal voltage
Designation Requirements or test
code in accordance with the
relevant parts of IEC
61557
A Part 5, 6.1
E1 Part 1, 4.2
E2 Part 1, 4.2, 4.3
E3 Part 1, 4.2
E4 Part 5, 4.2, 4.3
E5 Part 5, 4.3
E7 Part 5, 4.3
E8 v
Part 5, 4.3
21
Type
of test
R
R
R
T
T
T
T
T
R