IEC 60358-1:2012/COR1:2013

IEC 60358-1
st
(1 edition – 2012)
Coupling capacitors and capacitor dividers –
Part 1: General rules
CO RRI G E NDUM 1
4.4 System earthing
Replace the text of Subclause 4.4 by the following new text:
The considered system earthings are:
a) isolated neutral system (see 3.1.10);
b) resonant earthed system (see 3.1.13);
c) earthed neutral system (see 3.1.15):
1) solidly earthed neutral system (see 3.1.11)
2) impedance earthed (neutral) system (see 3.1.12).

8.2 Routine tests
Replace the text of Subclause 8.2 by the following new text:
The following tests are routine tests. For details, reference should be made to the relevant
subclauses:
a) tightness of equipment (9.1);
b) capacitance and tanδ measurement at power-frequency (9.2.2);
c) power-frequency or d.c. withstand test (9.2.3);
d) measurement of partial discharges (9.2.4);
e) resistance measurement if resistance(s) is(are) mounted inside the equipment (9.2.6);
f) power-frequency withstand test on low voltage terminal if applicable (9.2.5).
The order or possible combination of the tests is not standardized except for the highlighted
test in Figure 2.
Repeated power-frequency tests should be performed at 80 % of the specified test voltage.

8.3 Type tests
Replace the text of item e) with the following new text:
e) d.c.-withstand voltage wet test for outdoor type equipment for d.c. voltage (10.2.1);

July 2013
Figure 2 – Flow charts test sequence to be applied when performing the type test
(Figure 2a) and routine test (Figure 2b)
Replace the existing Figure 2 with the following new figure:

Routine test
Type test
a) Tightness of capacitor
Electrical routine tests
(e) Resistance measurement
(h) EMC RIV test if applicable
(if mounted resistance)
DC-coupling
AC-applications
b) C + tan δ test
and DC-filter
and DC-dividers
a) DC-Discharge test
b) Chopped impulse test
c) DC- test (if specified)
Method A Method B
c) a.c. test + d) PD test
(c) a.c. or d.c. test
c) Lightning impulse
Prestress voltage 80 %
(d) PD test
AC-capacitor DC-capacitor
Range I Range II Range I Range II
Test
U ≤ 245 kV U ≤ 300 kV U < 750 kV U ≥ 750 kV
m m SIL SIL
b) C + tan δ test
AC wet Required Not required Not required Not required

DC wet Not required Not required Required Required
SIL wet Not required Required Not required Required
(e) Resistance measurement
(if mounted resistance)
i) Polarity reversal test
For DC equipment
(f) AC-test of low voltage
terminal
Electrical routine tests
End of the
routine tests
End of
IEC  1645/13
Figure 2b – Routine test
type test
Figure 2a – Type test
IEC  1644/13
Figure 2 – Flow charts test sequence to be applied when performing
the type test (Figure 2a) and routine test (Figure 2b)

Note: specific supplementary tests (for example accuracy, ratio, etc.) are defined in the specific parts.

9.2.4.1 Test procedure for equipment (see Annex B)
Replace the fourth paragraph of 9.2.4.1 with the following new text:
July 2013
Procedure B: The partial discharge test is performed after the a.c. or d.c. voltage withstand
test. The applied voltage is raised to 80 % of the withstand voltage, maintained for not less
than 60 s, then reduced without interruption to the specified partial discharge test voltage. For
d.c. application, the pre-stress a.c. RMS-voltage is 1,3 × U udring at least 10 s.
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10.1.2 Discharge test for d.c. coupling/filter capacitor
Replace the title and text of Subclause 10.1.2 with the following new title and text:
10.1.2 Discharge test and chopped impulse test
10.1.2.1 Discharge test for d.c. coupling/filter capacitor
The test may be carried out either on a capacitor stack or on a unit. A voltage shall be applied
between the line and earth terminals of a stack or between the terminals of a unit in order to charge
the capacitor to a voltage equal to the lightning impulse test voltage. The capacitor shall then be
discharged through a rod gap so situated as to obtain the highest discharge frequency. The charging
voltage can be positive or negative.

The test shall be made twice within 5 min.

NOTE 1 This test is intended to check the internal connections of the capacitor.
NOTE 2 The capacitor may be charged either by means of a d.c. generator or by an impulse generator, the choice
being left to the manufacturer.
10.1.2.2 Chopped impulse test for a.c. equipment and d.c. dividers
The test shall be carried out on a complete equipment with negative polarity only and
combined with the negative polarity lightning impulse test in the manner described below.
The voltage shall be a standard lightning impulse as defined in IEC 60060-1, chopped after
the crest value has been reached between 2 μs and 8 μs. The chopping circuit shall be so
arranged that the polarity reversal of the recorded impulse shall be limited to 30 % of the peak
value. The lightning impulse shall be chopped with a suitable gap.
NOTE 1 If the front time is longer (see 10.1.3) the chopped time should be adjusted accordingly (after the crest
value).
The chopped impulse test voltage shall be as mentioned at 6.2.4.
The sequence of impulse applications shall be as follows:
a) for equipment rated for U < 300 kV
m
− one full impulse;
− two chopped impulses;
− fourteen full impulses;
b) for equipment rated for U ≥ 300 kV
m
− one full impulse;
− two chopped impulses;
− two full impulses.
Differences in waveshape of full wave applications before and after the chopped impulses are
an indication of an internal fault. Flashovers during chopped impulses across self-restoring
external insulation shall be disregarded in the evaluation of the behaviour of the insulation.

July 2013
10.2.1.2 d.c. wet test on d.c. equipment
Replace the text of Subclause 10.2.1.2 with the following new text:
For d.c. application the test is performed in positive polarity during 1 h at a voltage level of
1,5 × U .
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July 2013
CEI 60358-1
e
(1 edition – 2012)
Condensateurs de couplage et diviseurs capacitatifs –
Partie 1: Règles générales
CO RRI G E NDUM 1
4.4. Mise à la terre du système
Remplacer le texte existant du Paragraphe 4.4 par le nouveau texte qui suit:
Les mises à la terre du système considérées sont:
a) réseau à neutre isolé (voir 3.1.10);
b) réseau compensé par bobine d’extinction (voir 3.1.13);
c) réseau à
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