High-voltage test techniques - Partial discharge measurements

Applicable to the measurement of partial discharges which occur in electrical apparatus, components or systems when tested with alternating voltage up to 400 Hz or with direct voltage.

Hochspannungs-Prüftechnik - Teilentladungsmessungen

Techniques des essais à haute tension - Mesures des décharges partielles

Visokonapetostne preskusne tehnike - Meritve delnih razelektritev - Dopolnilo A1

Uporablja se za merjenje delnih razelektritev v električnih napravah, sestavnih delih ali sistemih med preskušanjem z izmenično napetostjo do največ 400 Hz ali z enosmerno napetostjo.

General Information

Status
Published
Publication Date
05-Apr-2016
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
21-Mar-2016
Due Date
26-May-2016
Completion Date
06-Apr-2016

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SLOVENSKI STANDARD
SIST EN 60270:2002/A1:2016
01-maj-2016
Visokonapetostne preskusne tehnike - Meritve delnih razelektritev - Dopolnilo A1
High-voltage test techniques - Partial discharge measurements
Hochspannungs-Prüftechnik - Teilentladungsmessungen
Techniques des essais à haute tension - Mesures des décharges partielles
Ta slovenski standard je istoveten z: EN 60270:2001/A1:2016
ICS:
17.220.20 0HUMHQMHHOHNWULþQLKLQ Measurement of electrical
PDJQHWQLKYHOLþLQ and magnetic quantities
19.080 (OHNWULþQRLQHOHNWURQVNR Electrical and electronic
SUHVNXãDQMH testing
SIST EN 60270:2002/A1:2016 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 60270:2002/A1:2016
---------------------- Page: 2 ----------------------
SIST EN 60270:2002/A1:2016
EUROPEAN STANDARD EN 60270:2001/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2016
ICS 17.220.20; 19.080
English Version
High-voltage test techniques - Partial discharge measurements
(IEC 60270:2000/A1:2015)

Techniques des essais à haute tension - Mesures des Hochspannungs-Prüftechnik - Teilentladungsmessungen

décharges partielles (IEC 60270:2000/A1:2015)
(IEC 60270:2000/A1:2015)

This amendment A1 modifies the European Standard EN 60270:2001; it was approved by CENELEC on 2016-01-01. CENELEC members

are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this amendment the status of a

national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC

Management Centre or to any CENELEC member.

This amendment exists in three official versions (English, French, German). A version in any other language made by translation under the

responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as

the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 60270:2001/A1:2016 E
---------------------- Page: 3 ----------------------
SIST EN 60270:2002/A1:2016
EN 60270:2001/A1:2016
European foreword

The text of document 42/338/FDIS, future IEC 60270:2000/A1, prepared by IEC/TC 42 "High-voltage

testing techniques" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as

EN 60270:2001/A1:2016.
The following dates are fixed:
(dop) 2016-10-01
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2019-01-01
standards conflicting with the
document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such

patent rights.
Endorsement notice

The text of the International Standard IEC 60270:2000/A1:2015 was approved by CENELEC as a

European Standard without any modification.
---------------------- Page: 4 ----------------------
SIST EN 60270:2002/A1:2016
IEC 60270
Edition 3.0 2015-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
AM ENDMENT 1
AM ENDEMENT 1
High-voltage test techniques – Partial discharge measurements
Techniques des essais à haute tension – Mesures des décharges partielles
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220.20; 19.080 ISBN 978-2-8322-3013-8

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 5 ----------------------
SIST EN 60270:2002/A1:2016
– 2 – IEC 60270:2000/AMD1:2015
© IEC2015
FOREWORD

This amendment has been prepared by IEC technical committee 42: High-voltage and high

current test techniques.
The text of this amendment is based on the following documents:
FDIS Report on voting
42/338/FDIS 42/340/RVD

Full information on the voting for the approval of this amendment can be found in the report

on voting indicated in the above table.

The committee has decided that the contents of this amendment and the base publication will

remain unchanged until the stability date indicated on the IEC website under

"http://webstore.iec.ch" in the data related to the specific publication. At this date, the

publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates

that it contains colours which are considered to be useful for the correct

understanding of its contents. Users should therefore print this document using a

colour printer.
_____________
3 Definitions

Replace the existing title and introductory phrase with the following new title and introductory

phrase:
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
Replace the existing definition 3.10 with the following new definition 3.10:
3.10
digital partial discharge instruments
instruments which perform a digital acquisition and evaluation of the PD data

Note 1 to entry: The A/D conversion of the PD pulses captured from the terminals of the test object can be done

either directly or after the apparent charge pulses have been established employing either an analogue band-pass

filter amplifier or an active integrator (see Annex E).
---------------------- Page: 6 ----------------------
SIST EN 60270:2002/A1:2016
IEC 60270:2000/AMD1:2015 – 3 –
© IEC2015
Add the following new definitions:
3.12
accumulated apparent charge q

sum of the apparent charge q of all individual pulses exceeding a specified threshold level,

and occurring during a specified time interval ∆t
3.13
PD pulse count m

total number of PD pulses which exceed a specified threshold level within a specified time

interval ∆t
3.14
PD pattern

display of the apparent charge q versus the phase angle φ of the PD pulses recorded during

a specified time interval ∆t
4.3.4 Wide-band PD instruments
Replace the last sentence of 4.3.4 with the following new text:
Recommended values for the significant frequency parameters f , f and ∆f are:
1 2
30 kHz ≤ f ≤ 100 kHz
f ≤ 1 MHz
100 kHz ≤ ∆f ≤ 900 kHz

Renumber the existing "NOTE" in 4.3.4 to "NOTE 1" and add the following new "NOTE 2":

NOTE 2 For test objects with windings like transformers and electrical machines the acquired frequency band may

be reduced down to a few 100 kHz and even below. The upper limit frequency f to be accepted for such kinds of

test objects should be specified by the relevant Technical Committee.
5.2 Calibration procedure

Renumber the existing "NOTE" in 5.2 to "NOTE 1" and add the following new "NOTE 2" at the

end of the subclause:

NOTE 2 For tall test objects, the connection leads between calibrator and terminals of the test object might

exceed several meters. Thus the transfer of the charge from the calibrator to the test object may be reduced due to

inevitable stray capacitances. The measurement uncertainty acceptable under this condition should be specified by

the relevant Technical Committee.
6.1 General

Replace the existing third paragraph "The voltage pulses of the generator shall have a rise

time t of less than 60 ns." with the following new text:

The parameters characterizing unipolar step voltage of magnitude U shall satisfy the

following conditions (see Figure 6):
Rise time: t ≤ 60 ns
Time to steady state: t ≤ 200 ns
Step voltage duration: t ≥ 5 µs
Deviation of the step voltage magnitude U between t and t : ∆U ≤ 0.03 U
0 s d 0
, t and t are measured from the origin t of the step voltage which
The time parameters t
r s d 0

refers to the time instant when the rising voltage equals 10 % of U (see Figure 6).

---------------------- Page: 7 ----------------------
SIST EN 60270:2002/A1:2016
– 4 – IEC 60270:2000/AMD1:2015
© IEC2015

The time to steady state t is the shortest instant at which the deviation ∆U from U remains

s 0
first time less than 3 %.

The step voltage duration t is the instant after t at which the magnitude of the step voltage

d s

decays below 97% of U . After t the voltage shall decrease continuously down to 10 % of U

0 d 0
within a time interval not shorter than 500 µs.

The magnitude U of the step voltage is the mean value occurring within the steady state

duration t − t .
d s

For test objects represented by a lumped capacitance C the calibrating capacitor C shall

a 0
satisfy the conditions C ≤ 200 pF and C ≤ 0,01 C .
0 0 a

For test objects represented by a characteristic impedance Z , such as power cables

exceeding a length of 200 m, the value of the calibrating capacitor shall satisfy the conditions

C ≤ 1nF and C × Z ≤ 30 ns.
0 0 c

For calibrators manufactured before this amendment was published, whose time and voltage

parameters do not comply with the above specified values, the deviation of the measured

values from the specified values shall be stated in the test protocol.
11.2 Quantities related to partial discharges

Replace the existing title and text of 11.2 with the following new title and text:

11.2 PD quantities
PD measurements with direct voltage should be based on the following quantities:

– apparent charge of each individual PD pulse occurring during a specified time interval ∆t

at constant test voltage, as defined in 3.3.1 (see Figure H.1a)).

– accumulated apparent charge of a PD pulse train occurring within a specified time interval

∆t at constant test voltage, as defined in 3.12 (see Figure H.1b)).

– PD pulse count m of PD pulse trains as defined in 3.13 exceeding specified limits of the

apparent charge magnitude q during a specified time interval ∆t at constant test voltage

m i
level (see Figure H.2a)).

– PD pulse count m occurring within specified ranges of the apparent charge magnitude q

for a specified time interval ∆t at constant test voltage level (see Figure H.2b)).

To determine the PD pulse count m care should be taken so that noisy pulses are not counted

to avoid misleading statistics. Thus before startin
...

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