47113964.2.023
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21
X
1
– X
0
γ
= -------------------------
⋅
100, (1)
X
nom
X
1
is the value of the measurand calculated by an inverse function of transformation, in mea-
surement unit;
X
0
is the design value of the measurand or the standard instrument value in the test point, in mea-
surement unit;
X
nom
is the fiducial value of the measurand, in measurement unit.
3.4.3.5 The following operations should be executed before measure:
The workplace for testing of the intrinsic error is made according to a figure 1.
Take megohmmeter readings on expiry of 1 min after voltage test or when readings practically es-
tablished.
A1 – 1:10 probe device as a unit 53131A frequency counter
PV1 – Э545 Voltmeter
S1 – Double-pole Switch
Figure 1 The working place for testing of the intrinsic error of currents, voltages and powers
