Standard method of measurement of lamp cap temperature rise

EN following parallel vote

Standardverfahren zur Messung der Lampensockel-Übertemperatur

Méthode normalisée de mesure de l'échauffement d'un culot de lampe

Décrit la méthode de mesure normalisée de l'échauffement du culot de la lampe à appliquer pour la vérification de la conformité des lampes à incandescence ou des lampes à décharge aux limites spécifiées. Décrit la méthode d'essai et fournit les spécifications des douilles d'essai à utiliser avec les lampes selon le type de culot dont elles sont munies. Cette méthode a été largement utilisée pour les lampes à incandescence, mais son application n'est pas limitée à cette catégorie de lampes.

Standardna metoda za merjenje porasta temperature na vznožku žarnice ali sijalke (IEC 60360:1998)

General Information

Status
Published
Publication Date
30-Jun-1999
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Jul-1999
Due Date
01-Jul-1999
Completion Date
01-Jul-1999

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SLOVENSKI STANDARD
SIST EN 60360:1999
01-julij-1999
1DGRPHãþD
SIST EN 60360:2000/A1:2000
SIST EN 60360:2000/A2:2000
Standardna metoda za merjenje porasta temperature na vznožku žarnice ali sijalke
(IEC 60360:1998)
Standard method of measurement of lamp cap temperature rise
Standardverfahren zur Messung der Lampensockel-Übertemperatur
Méthode normalisée de mesure de l'échauffement d'un culot de lampe
Ta slovenski standard je istoveten z: EN 60360:1998
ICS:
29.140.10 Grla in držala žarnic Lamp caps and holders
SIST EN 60360:1999 en

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

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SIST EN 60360:1999
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SIST EN 60360:1999
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SIST EN 60360:1999
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SIST EN 60360:1999
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SIST EN 60360:1999
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SIST EN 60360:1999
NORME
CEI
INTERNATIONALE
IEC
60360
INTERNATIONAL
Troisième édition
STANDARD
Third edition
1998-06
Méthode normalisée de mesure de l’échauffement
d’un culot de lampe
Standard method of measurement
of lamp cap temperature rise
 IEC 1998 Droits de reproduction réservés  Copyright - all rights reserved

Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in

utilisée sous quelque forme que ce soit et par aucun any form or by any means, electronic or mechanical,

procédé, électronique ou mécanique, y compris la photo- including photocopying and microfilm, without permission in

copie et les microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.

International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http: //www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
PRICE CODE Q
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue
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SIST EN 60360:1999
60360 © IEC:1998 – 3 –
CONTENTS
Page

FOREWORD ................................................................................................................... 5

INTRODUCTION ............................................................................................................. 7

Clause

1 General.................................................................................................................... 9

1.1 Scope................................................................................................................ 9

1.2 Normative reference.......................................................................................... 9

2 Definitions................................................................................................................ 9

3 General conditions for measurements ....................................................................... 9

4 Test requirements..................................................................................................... 11

5 Test lampholders...................................................................................................... 13

6 Supply conductors.................................................................................................... 15

7 Thermocouple........................................................................................................... 15

8 Assembly of the lamp and test lampholder in the enclosure ....................................... 17

9 Measurement of temperature rise.............................................................................. 19

Figures .......................................................................................................................... 21-35

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SIST EN 60360:1999
60360 © IEC:1998 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
STANDARD METHOD OF MEASUREMENT
OF LAMP CAP TEMPERATURE RISE
FOREWORD

1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

this end and in addition to other activities, the IEC publishes International Standards. Their preparation is

entrusted to technical committees; any IEC National Committee interested in the subject dealt with may

participate in this preparatory work. International, governmental and non-governmental organizations liaising

with the IEC also participate in this preparation. The IEC collaborates closely with the International Organization

for Standardization (ISO) in accordance with conditions determined by agreement between the two

organizations.

2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an

international consensus of opinion on the relevant subjects since each technical committee has representation

from all interested National Committees.

3) The documents produced have the form of recommendations for international use and are published in the form

of standards, technical reports or guides and they are accepted by the National Committees in that sense.

4) In order to promote international unification, IEC National Committees undertake to apply IEC International

Standards transparently to the maximum extent possible in their national and regional standards. Any

divergence between the IEC Standard and the corresponding national or regional standard shall be clearly

indicated in the latter.

5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any

equipment declared to be in conformity with one of its standards.

6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject

of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 60360 has been prepared by subcommittee 34A: Lamps, of IEC

technical committee 34: Lamps and related equipment.

This third edition cancels and replaces the second edition published in 1987, amendment 1

(1993) and amendment 2 (1996), and constitutes a technical revision.

The text of this standard is based on the second edition, amendments 1 and 2 and the

following documents:
FDIS Report on voting
34A/814/FDIS 34A/828/RVD

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

voting indicated in the above table.
In this standard, the following print types are used:
– requirements proper: in roman type;
– test specifications: in italic type;
– explanatory matter: in smaller roman type.
The contents of the corrigendum of March 1999 have been included in this copy.
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SIST EN 60360:1999
60360 © IEC:1998 – 7 –
INTRODUCTION

The temperature rise of the lamp cap is, in practice, very dependent on the mounting of the

lamp and the condition of the cap. For this reason, it has been necessary to define a method of

measurement based on the use of a standard test lampholder. The temperature rise Δt

measured on the standard test lampholder is taken as the lamp cap temperature rise for the

purpose of this standard.

Compared with the measurement of the temperature rise of the bare lamp cap, the measure-

ment of the temperature rise of a standard test lampholder has the following advantages:

– a better approximation to actual operating conditions;

– improved reproducibility, as there is less influence from lamp cap material, finish and

surface conditions (which also have little influence on actual operating conditions);

– levelling (or averaging) of the temperatures of various parts of the cap, giving a better

overall picture of the heat transferred from the lamp to the luminaire;

– reduced duration of measurements, as the thermocouple is fixed permanently to the test

lampholder.
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SIST EN 60360:1999
60360 © IEC:1998 – 9 –
STANDARD METHOD OF MEASUREMENT
OF LAMP CAP TEMPERATURE RISE
1 General
1.1 Scope

This International Sandard describes the standard method of measurement of lamp cap

temperature rise which is to be used when testing incandescent or discharge lamps for

compliance with the limits. Temperature-rise limits for particular lamp types are, for example,

listed in IEC 60432.

It covers the method of test and the specifications for test lampholders for lamps fitted with

various sizes of Edison screw (ES) and Bayonet (BC) caps. This method has been used widely

for incandescent lamps but its application is not limited to that kind of lamp.
1.2 Normative reference

The following normative document contains provisions which, through reference in this text,

constitutes provisions of this International Standard. At the time of publication, the edition

indicated was valid. All normative documents are subject to revision, and parties to agreements

based on this International Standard are encouraged to investigate the possibility of applying

the most recent edition of the normative document indicated below. Members of IEC and ISO

maintain registers of currently valid International Standards.
IEC 60432: Safety specification for incandescent lamps
2 Definitions
For the purposes of this International Sandard, the following definitions apply:
2.1
temperature rise of cap

surface temperature rise of a standard test lampholder fitted to the lamp cap, when measured

under conditions specified in this standard
2.2
equilibrium temperature (t )

steady-state temperature of a standard test lampholder reached after a sufficient lamp

operating time
NOTE – The measuring accuracy should be ±1 °C.
3 General conditions for measurements
3.1 Ageing and stabilizing

For these measurements, no previous ageing of the lamp is required. Sufficient stability of the

lamp is achieved during the time necessary to reach the equilibrium temperature in the test

enclosure.
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SIST EN 60360:1999
60360 © IEC:1998 – 11 –
3.2 Supply voltage

a) For lamps intended to be connected directly to the supply, measurement shall be made at

rated voltage, the supply voltage being maintained constant within ±0,5 %.

b) For lamps intended to be connected to the supply through a ballast, measurements shall be

made at the rated voltage of the ballast, the supply voltage being maintained constant

within ±0,5 %. Measurements shall be made using a reference ballast or a production

ballast which at the calibration current has an impedance within ±1 % of the reference

ballast.

If the lamp is marked with a voltage range the test procedure of IEC 60432 shall apply, unless

a different procedure is called for in another publication.
3.3 Ambient and reference temperatures

The reference temperature for defining cap temperature rise is 25 °C. However, it is possible

for the measurements to be made at an ambient temperature (t ) within the range of 15 °C to

amb

40 °C unless otherwise specified in the relevant lamp data sheet; that is, the temperature within

the test enclosure, during the measurement cycle, shall remain within this range for the results

to be meaningful. A special test enclosure, described in 4.1, is used to maintain the ambient

temperature at a sufficiently constant value.

If the temperature in the test enclosure differs from 25 °C, the value Δt measured shall be

converted to a temperature rise relevant to an ambient of 25 °C in accordance with the

following formula:
1/2
 
Δt = Δt + 1/3(t −25)
 
25 m amb
100
 
where
Δt is the temperature rise corrected to 25 °C;

Δt is the difference between the final equilibrium temperature and the ambient temperature,

t – t ;
m amb
t is the ambient temperature.
amb

NOTE – The above formula is valid for any ambient temperature between 15 °C and 40 °C.

4 Test requirements
Temperature measurements shall be made in a draught-free test enclosure.
4.1 Test enclosure

The draught-proof enclosure is rectangular, with a double skin on the top and on at least three

sides, and with a solid base. The double skins are of perforated metal, spaced apart

approximately 150 mm, with regular perforations of 1 mm to 2 mm diameter, occupying about

40 % of the whole area of each skin.
The internal surfaces are painted with a matt paint.

The dimensions of the enclosure shall be such that the ambient temperature within the test

enclosure will not exceed 40 °C while the test is being run. To achieve this condition, the three

principal internal dimensions shall be preferably at least 900 mm. There should be a clearance

of at least 200 mm between any part of the lamp and the inside of the enclosure. Alternative

constructions for draught-proof enclosures are suitable if it is established that similar test

results are obtained.
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SIST EN 60360:1999
60360 © IEC:1998 – 13 –

NOTE – For production surveillance conditions, a smaller enclosure of 500 mm × 500 mm × 500 mm may be used,

providing the internal ambient temperature does not exceed 40 °C during temperature measurement, the lamp being

mounted in the centre of the enclosure.

The internal ambient temperature shall be measured with a thermometer screened from direct

radiation from the test lamp. The thermometer is to be placed level with the lamp about

...

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