Amendment 1 - Live working - Voltage detectors - Part 1: Capacitive type to be used for voltages exceeding 1 kV a.c.

Amendement 1 - Travaux sous tension - Détecteurs de tension - Partie 1: Type capacitif pour usage sur des tensions alternatives de plus de 1 kV

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Publication Date
28-Apr-2009
Technical Committee
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IEC 61243-1:2003/AMD1:2009 - Amendment 1 - Live working - Voltage detectors - Part 1: Capacitive type to be used for voltages exceeding 1 kV a.c.
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IEC 61243-1
Edition 2.0 2009-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 1
AMENDEMENT 1
Live working – Voltage detectors –
Part 1: Capacitive type to be used for voltages exceeding 1 kV a.c.
Travaux sous tension – Détecteurs de tension –

Partie 1: Type capacitif pour usage sur des tensions alternatives de plus de 1 kV

IEC 61243-1:2003/A1:2009
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2009 IEC, Geneva, Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by

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---------------------- Page: 2 ----------------------
IEC 61243-1
Edition 2.0 2009-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 1
AMENDEMENT 1
Live working – Voltage detectors –
Part 1: Capacitive type to be used for voltages exceeding 1 kV a.c.
Travaux sous tension – Détecteurs de tension –

Partie 1: Type capacitif pour usage sur des tensions alternatives de plus de 1 kV

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX
ICS 29.240.99 ISBN 978-2-88910-450-5
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – 61243-1 Amend.1 © IEC:2009
FOREWORD
This amendment has been prepared by IEC technical committee 78: Live working.
The text of this amendment is based on the following documents:
CDV Report on voting
78/751/CDV 78/794/RVC

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 maintenance result date indicated on the IEC web site 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.
_____________
2 Normative references
Replace the existing reference to IEC 60071-1:1993 by the following:

IEC 60071-1:2006, Insulation co-ordination – Part 1: Definitions, principles and rules

Replace the existing reference to IEC 61318:2003 by the following:

IEC 61318:2007, Live working – Conformity assessment applicable to tools, devices and

equipment
3 Terms and definitions
Replace the first sentence by the following:

For the purposes of this document, the terms and definitions given in IEC 61318:2007 and the

following apply.
3.1
voltage detector
Replace the existing definition and note by the following:

device used to provide clear evidence of the presence or the absence of the operating voltage

NOTE For example, voltage detectors can be described as capacitive type or resistive type.

[Definition 11.2.5 of IEC 60743, modified, and IEV 651-10-04, modified]
---------------------- Page: 4 ----------------------
61243-1 Amend.1 © IEC:2009 – 3 –
3.4
family of voltage detectors
Replace the existing definition by the following:

for testing purposes, a group of voltage detectors, delimited by a minimum and a maximum

rated voltage, that are identical in design (including dimensions) and only differ by their

nominal voltages or nominal voltage ranges
3.10
insulating stick
Replace the existing definition by the following:

insulating tool essentially made of an insulating tube and/or rod with end fittings

[Definition 2.5.1 of IEC 60743 and IEV 651-02-01]

NOTE For voltage detection, an insulating stick is intended to be attached to a voltage detector as a separate

device in order to provide the length to reach the installation to be tested and adequate safety distance and

insulation to the user.
3.29
type test
Delete the definition.
3.30
routine test
Delete the definition.
3.31
sampling test
Delete the definition.
3.32
acceptance test
Delete the definition.
4.2 Functional requirements
4.2.1 Clear indication
Replace the existing text by the following:

The voltage detector shall give an unambiguous indication of the presence and/or the

absence of the system operating voltage as a function of the nominal voltage or nominal

voltage range of the voltage detector, and its nominal frequency or nominal frequencies.

Indication may not be reliable in the vicinity of large conductive parts that create equipotential

zones.

When the voltage detector is used in accordance with instructions for use, the presence of an

adjacent live or earthed part shall not affect its indication.

When used in accordance with instructions for use, the voltage detector shall not indicate

"voltage present" for usual values of interference voltages.
---------------------- Page: 5 ----------------------
– 4 – 61243-1 Amend.1 © IEC:2009
4.2.1.1 Continuous indication

The voltage detector shall give continuous indication when in direct contact with a live part.

4.2.1.2 Threshold voltage
4.2.1.2.1 General
The user shall not have access to the threshold voltage setting.

The indication “voltage present” shall appear if the voltage to earth on the part to be tested is

greater than 45 % of the nominal voltage.
NOTE 1 45 % of the nominal voltage corresponds to 0,78U 3 .

The indication "voltage present" shall not appear if the voltage to earth on the part to be

tested is equal to or less than 10 % of the nominal voltage.

NOTE 2 10 % of the nominal voltage corresponds to 0,17U 3 and is the maximum phase to earth induced

voltage normally encountered in the field.

To fulfil the above requirements, the threshold voltage U shall satisfy the following

relationship:
0,10 U max< U ≤ 0,45 U min
n t n
For voltage detectors with only one nominal voltage, U max. equals U min.
n n

NOTE 3 There is a theoretical limit of 4,5 to the ratio between U max. and U min. to achieve clear indication of

n n
the voltage detector. This value corresponds to the division of 0,45 by 0,1.

NOTE 4 It may happen that the induced voltage level on a specific network is higher than 10 % of the nominal

voltage or of the maximum nominal voltage of the range.

It may also happen that the variations of the nominal voltage network are such that the 0,45 U or 0,45 U max. is

n n
not the lowest possible value.

Moreover, when is it expected that the voltage detector will be used in the vicinity of large conductive parts that

create equipotential zones (see 4.2.1), the customer may specify a low value of the threshold voltage.

In all these cases, manufacturer and customer should reach an agreement to set the appropriate value for the

threshold voltage, while keeping it within the range specified above. The setting of the threshold voltage is further

limited by the requirements for clear indication which shorten the range of possible values, and the relevant tests

(clear indication) have to be passed.

4.2.1.2.2 Particular case of voltage detectors to be used on networks with low values

of interference voltage

In some cases, the customer may wish to take advantage of a network with low values of

interference voltage by reducing the lower limit of the threshold voltage below 0,10 U max.

NOTE 1 This particular case could help to deal with the use of the voltage detector in the vicinity of large

conductive parts. In spite of this change of the threshold voltage for a lower value, the theoretical limit of 4,5 for

the ratio between U max. and U min. still remains valid, and the relevant tests (clear indication) have to be

n n
passed.

In such case, the voltage detector shall have a special marking and a warning shall be

included in the instructions for use to inform the users of the modification brought to the

threshold voltage.

NOTE 2 The special marking should be the result of an agreement between the manufacturer and the client.

---------------------- Page: 6 ----------------------
61243-1 Amend.1 © IEC:2009 – 5 –
4.2.3 Temperature and humidity dependence of the indication
Replace the existing fourth paragraph by the following:
In these cases, the threshold voltage shall satisfy 4.2.1.2.
4.4.2 Dimensions, construction
Replace the existing Table 2 and the notes by the following:
Table 2 – Minimum length of the insulating element (L )
of a voltage detector as a complete device
U L
r i
1 < U ≤ 7,2 320
7,2 < U ≤ 12 360
370
12 < U ≤ 17,5
470
17,5 < U ≤ 24
24 < U ≤ 36 520
36 < U ≤ 72,5 830
72,5 < U ≤ 123 1 300
1 700
123 < U ≤ 170
2 300
170 < U ≤ 245
3 600
245 < U ≤ 420
420 < U ≤ 525 4 300
525 < U ≤ 765 6 600

NOTE 1 The nominal voltage U is used when the parameters to be specified are related to the installation

dimensioning or to the functional performance of the voltage detector, while the rated voltage U is used when

insulation performance of the voltage detector is concerned.

NOTE 2 The L values of Table 2 correspond to the minimum distance in air (obtained from Tables 1 and 2 of

IEC 61936-1) plus an additional safety distance.

NOTE 3 The L values of Table 2 can be used as a guidance to determine the length of the insulating stick used

with a voltage detector as a separate device. However, the length of the insulating stick for live working can be

shortened for voltage detectors as a separate device taking into account the minimum approach distances or in

accordance with national or regional regulations.
Replace the second paragraph by the following:

For L equal to or greater than 520 mm, conductive parts not exceeding 200 mm (in total),

measured from the limit mark towards the handle, are allowed within the minimum length of

the insulating element if they are completely externally insulated.
4.5 Markings

In the list of items of marking, add the following item after the second existing item:

– special marking for low interference voltage, when relevant;
Replace the last item of the existing list of markings by the following:

– number of the relevant IEC standard immediately adjacent to the symbol, (IEC 61243-1).

---------------------- Page: 7 ----------------------
– 6 – 61243-1 Amend.1 © IEC:2009
Add the following new paragraphs at the end of the existing subclause:

To be marked with the number of this IEC standard, the product shall satisfy all the

requirements specified herein.

With every voltage detector or with every batch of voltage detectors to be delivered, the

manufacturer shall provide information related to the number of the IEC standard with the

year of publication.
6.1 General
Add the following new paragraph at the beginning of the existing subclause:

This standard provides testing provisions to demonstrate compliance of the product to the

requirements of Clauses 4 and 5. These testing provisions are primarily intended to be used

as type tests for validation of the design input. Where relevant, alternative means (calculation,

examination, tests, etc.) are specified within the test subclauses for the purpose of voltage

detectors having completed the production phase.
6.1.2 Type test
Replace the first item of the existing list by the following:

– The type tests shall be performed at the lowest and at the highest nominal voltages

delimiting the family of voltage detectors. Within the limits of the family, bridging tests

(6.3.1 and 6.3.2) shall be performed for each distance d of Table 8 under the highest

voltage of each voltage range. Mechanical tests shall be done only once covering the

worst conditions.
6.1.3 Routine test
Delete the subclause.
6.1.4 Sampling test
Delete the subclause.
6.1.5 Test methods
Renumber this subclause as 6.1.3.
6.2.1.2 Measurement of threshold voltage
Replace the existing text of the subclause by the following:
6.2.1.2.1 Type test

The test set-up used for the measurement of the threshold voltage is of the ball and ring type,

as shown in Figure 2.

The electrode arrangement is selected according to the category of the voltage detectors.

Figure 2a gives the arrangement for voltage detectors of category S and Figure 2b for voltage

detectors of category L.

For voltage detectors with a nominal voltage range, the test set-up shall be selected

according to the highest nominal voltage.
---------------------- Page: 8 ----------------------
61243-1 Amend.1 © IEC:2009 – 7 –
The ball and ring electrodes shall be connected as shown in Figure 4a.

The voltage detector shall be installed in such a manner that its contact electrode touches the

ball electrode and the indicator is approximately concentrically located in relation to the ring

electrode (in the horizontal axis).

The threshold voltage shall be measured by increasing the test voltage until the status of the

signal changes according to its type of indication.

The test shall be considered as passed if the measured threshold voltage is within the limits

specified in 4.2.1.2.

6.2.1.2.2 Alternative test for voltage detectors having completed the production phase

The alternative test consists of checking that the threshold voltage of a manufactured voltage

detector is within ± 5 % of the threshold voltage of a voltage detector that has successfully

passed the type tests according to 6.2.1.2.1. This test can be performed by means of an

alternative high voltage test set up.
6.2.1.3 Influence of in-phase interference field
Replace the second sentence of the penultimate paragraph by the following:

For voltage detectors with a nominal voltage range, the tests shall be performed for the lower

nominal voltage.
6.2.1.5 Influence of interference voltage
Add the following new sentence at the end of the penultimate existing paragraph:

For low interference voltage detectors the test voltage shall be 95 % of the threshold voltage

specified in the agreement between the manufacturer and the customer.
6.2.2 Clear perceptibility of visual indication
Replace the existing text of the subclause by the following:
6.2.2.1 Type test
The test set-up is given in Figure 5.

The intensity of the light striking an unpolished grey screen with a reflectivity index of 18 %

and the signal source of the indicator shall be:

– 50 000 lux ± 10 % for outdoor type voltage detector with standard light D according to

CIE 15.2 corresponding to colour temperature of 5 500°K ± 10 %;

– 1 000 lux ± 10 % for indoor type voltage detector with standard light A according to

CIE 15.2 corresponding to colour temperature of 3 200°K ± 10 %.

The voltage detector is positioned in the direction of axis A – B, and its signal source part is

centered on the axis A – B in normal use, according to Figure 5a.

The visual perceptibility test shall be performed by energizing the voltage detector by any

relevant means corresponding to the application of the threshold voltage plus 10 %.

---------------------- Page: 9 ----------------------
– 8 – 61243-1 Amend.1 © IEC:2009

By switching the voltage "on" and "off", the voltage detector is set to respond in such a

manner that the indications "voltage present" and "voltage not present" alternate several

times in conditions unknown to the observer.

Three observers with average sight look towards the voltage detector, through the 5 mm holes

in the front plate (see Figure 5b).

The test shall be considered as passed if the indication is seen by the three observers

through each hole.

6.2.2.2 Alternative test for voltage detectors having completed the production phase

The alternative test consists in comparing the perceptibility of the visual indication of a

manufactured voltage detector to the one of a voltage detector which has passed successfully

the type test according to 6.2.2.1 (reference voltage detector). The test shall be considered as

passed if both perceptibilities are almost identical.
6.2.3 Clear perceptibility of audible indication
Replace the existing text of the subclause by the following:
6.2.3.1 Type test

The test shall be carried out in free-field over reflecting plane conditions, in an environment

following the requirements of Annex A of ISO 3744:1994.
NOTE 1 Such test conditions can be encountered in semi-anechoic rooms.

Averaged over the microphone positions, the level of the background noise shall be at least

6 dB(A) but preferably more than 15 dB(A) below the sound pressure level to be measured. If

the difference between the sound pressure levels of the background noise and the source

noise is between 6 dB(A) and 15 dB(A), a correction shall be applied as described in 8.3 of

ISO 3744:1994.

The instrumentation system, including the microphone and cable, shall meet the requirements

for a class 1 instrument specified in IEC 61672-1. The filters used shall meet the requirements

for a class 1 instrument specified in IEC 61260.

During each series of measurements, a sound calibrator with an accuracy of class 1 specified

in IEC 60942 shall be applied to the microphone to verify the calibration of the entire

instrument system.

The audible perceptibility test shall be performed by energizing the voltage detector by any

relevant means corresponding to the application of the threshold voltage plus 10 %.

The voltage detector shall be arranged as shown in Figure 6a, in such a manner that the

sound axis of the voltage detector is parallel to the ground and at least 1,5 m away from any

sound-reflecting surfaces.

A measuring plane shall be established, perpendicular to the sound axis according to

Figure 6a. The distance of 400 mm can be increased by 200 mm if this will enable higher

sound intensities to be measured.

The measurements shall be carried out for the indications "voltage present" and "voltage not

present", at each of the twelve microphone positions of Figure 6b. The sound pressure level

shall be measured in each octave band of the frequency range 1 000 Hz to 4 000 Hz, with the

A-weighting network.
---------------------- Page: 10 ----------------------
61243-1 Amend.1 © IEC:2009 – 9 –

The period of observation shall be at least 10 s for a continuous signal. For an intermittent

signal, the integration time for the measurement shall be shorter than the signal duration.

The test shall be considered as passed, if for each microphone position, the sound pressure

level, within at least one octave band of the frequency range of interest, is greater than

– 80 dB(A), (ref.: 20 μPa) for a voltage detector with continuous sound signal;

– 77 dB(A), (ref.: 20 μPa) for a voltage detector with intermittent sound signal.

When there is an additional visual indication these values may be reduced by 10 dB(A).

NOTE 2 Other higher values may be agreed between manufacturer and customer for specific usage in very noisy

areas.

6.2.3.2 Alternative test for voltage detectors having completed the production phase

The alternative test consists in comparing the perceptibility of the audible indication of a

manufactured voltage detector to the one of a voltage detector which has passed successfully

the type test according to 6.2.3.1 (reference voltage detector). The test shall be considered as

passed if both perceptibilities are almost identical.
6.2.4 Frequency dependence
Replace the existing text of the subclause by the following:
6.2.4.1 Type test

The test shall be carried out using the test set-up and the test procedure of 6.2.1.2.1

For a voltage detector with one nominal frequency, the test shall be performed at 97 % and

103 % of the nominal frequency.

For a voltage detector with more than one nominal frequency, the test shall be performed at

97 % and 103 % of each nominal frequency.

The test shall be considered as passed if the threshold voltage is within the limits specified in

4.2.1.2.
6.2.4.2 Alternative means for voltage detectors having completed the production
phase

The manufacturer shall prove that he has followed the same documented assembly procedure

as per the type tested device. The manufacturer shall document components that affect the

frequency performance.
6.2.5 Response time
Replace the existing text of the subclause by the following:
6.2.5.1 Type test
The test voltage applied shall be the threshold voltage plus 10 %.

NOTE For practical reasons, other equivalent means for energizing the voltage detector are allowed.

The test voltage shall be applied ON, then OFF and ON twenty times. The duration of the ON

and OFF periods shall be adjusted to 1 s long.
---------------------- Page: 11 ----------------------
– 10 – 61243-1 Amend.1 © IEC:2009

The test shall be considered as passed if each visual or audible signal is seen or heard as a

rhythmical indication having a minimum frequency of 0,5 Hz. The first signal(s) shall appear

during the first cycle.
6.2.5.2 Alternative means for voltage detectors having completed the production
phase

The manufacturer shall prove that he has followed the same documented assembly procedure

as per the type tested device. The manufacturer shall document components that affect the

response time.
6.2.8 Non-response to d.c. voltage
Replace the existing text of the subclause by the following:
6.2.8.1 Type test

For a voltage detector with a nominal voltage range, the test voltage shall be selected

according to the higher nominal voltage. The test voltage shall be U.2 3

The voltage detector shall be placed with the contact electrode on a d.c. voltage source, in

accordance with IEC 60060-1. The test shall be repeated with the polarity reversed.

The test shall be considered as passed if there is no continuous signal longer than 1 s.

NOTE For practical reasons, other equivalent means for energizing the voltage detector are allowed.

6.2.8.2 Alternative means for voltage detectors having completed the production
phase

The manufacturer shall prove that he has followed the same documented assembly procedure

as per the type tested device. The manufacturer shall document components that affect the

non-response to d.c. voltage.
6.2.9 Time rating
Replace the existing text of the subclause by the following:
6.2.9.1 Type test

The voltage detector shall be placed with the contact electrode on an a.c. voltage source, and

the test voltage applied for 5 min.

The test voltage shall be 1,2 U for a voltage detector having a nominal voltage lower than or

equal to 123 kV.

The test voltage shall be 1,2U 3 but shall be greater than 148 kV (≈1,2 times 123 kV) for a

voltage detector having a nominal voltage higher than 123 kV.

The test shall be considered as passed if the status of the signal corresponding to "voltage

present" is uninterrupted for all the test period.
---------------------- Page: 12 ----------------------
61243-1 Amend.1 © IEC:2009 – 11 –
6.2.9.2 Alternative means for voltage detectors having completed the production
phase

The manufacturer shall prove that he has followed the same documented assembly procedure

as per the type tested device. The manufacturer shall document components that affect the

time rating.
6.3 Dielectric tests
6.3.1 Protection against bridging for indoor/outdoor type voltage detector

Replace the text of the first sentence of the third paragraph (or of the first paragraph after

Table 7) by the following:

The distance d between bar A and bar B shall be adjusted according to Table 8, column

“Indoor”, whatever the type of test set-up used.
Table 8 – Distance d for the bridging test set-up
Replace existing Table 8 by the following:
Table 8 – Distance d for the bridging test set-up
U d
n 1
kV mm
Indoor Outdoor
U ≤ 7,2 50 150
60 150
7,2 < U ≤ 12
12 < U ≤ 17,5 85 180
115 215
17,5 < U ≤ 24
180 325
24 < U ≤ 36
240 520
36 < U ≤ 52
330 700
52 < U ≤ 72,5
72,5 < U ≤ 123 650 1 100
1 100 1 100
123 < U ≤ 145
145 < U ≤ 170 1 350 1 350
1 850 1 850
170 < U ≤ 245
245 < U ≤ 300 2 100 2 100
2 500 2 500
300 < U ≤ 362
362 < U ≤ 420 2 900 2 900
3 400 3 400
420 < U ≤ 525
4 800 4 800
525 < U ≤ 765
6.3.2 Protection against bridging for outdoor type voltage detectors
Replace the second sentence of the first paragraph by the following:

These band electrodes are wound around the tube, one at the contact electrode and the other

in the direction of the handle at a distance d , column “Outdoor”, specified in Table 8.

---------------------- Page: 13 ----------------------
– 12 – 61243-1 Amend.1 © IEC:2009
6.4.6 Climatic dependence
Replace the existing text of the subclause by the following:
6.4.6.1 Type test

Before this test, each voltage detector shall be cleaned with isopropanol and then dried in air

for 15 min.

The test is performed on the indicator and the contact electrode extension, if so equipped, in

accordance with IEC 60068-2-14 except for the temperature cycles and time relative to

humidity. In this case, the test cycle shall be in accordance with the following (see Figure 11).

The test piece shall be placed in a climatic chamber. The temperature of the chamber is

lowered from the ambient temperature to the required low value according to the climatic

category of the voltage detector (see Table 1). The temperature of the chamber shall be

maintained for 2 h.

The test piece shall then be removed from the climatic chamber and within 5 min to 10 min

following the withdrawal, the measurement of the threshold voltage shall be carried out at

ambient temperature according to 6.2.1.2.1. Wiping of external parts is allowed.
The voltage detector shall then be kept at ambient temperature for 2 h.
The test piece shall next be pl
...

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