EN 50107-2:2005

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EUROPEAN STANDARD EN 50107-2
NORME EUROPÉENNE
EUROPÄISCHE NORM April 2005
ICS 29.140.30
English version
Signs and luminous-discharge-tube installations operating
from a no-load rated output voltage exceeding 1 kV
but not exceeding 10 kV
Part 2: Requirements for earth-leakage
and open-circuit protective devices

Installation d'enseignes et de tubes Leuchtröhrengeräte und
lumineux à décharge fonctionnant Leuchtröhrenanlagen
à une tension de sortie à vide assignée mit einer Leerlaufspannung über 1 kV,
supérieure à 1 kV mais ne dépassant aber nicht über 10 kV
pas 10 kV Teil 2: Anforderungen an
Partie 2: Prescriptions pour les dispositifs Erdschlussschutz- und
de protection contre les défauts Leerlaufschutzeinrichtungen
d'isolement et contre l'ouverture des
circuits secondaires
This European Standard was approved by CENELEC on 2005-03-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard 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 Central Secretariat or to any CENELEC member.

This European Standard 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 50107-2:2005 E
Foreword
This European Standard was prepared by CENELEC BTTF 60-2, Electrical discharge lamp
installations.
The text of the draft was submitted to the formal vote and was approved by CENELEC as
EN 50107-2 on 2005-03-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2006-03-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2008-03-01
__________
- 3 - EN 50107-2:2005
Contents
Page
1 Scope.4
2 Normative references .4
3 Definitions .4
4 General requirements .5
5 Tests .5
6 Classification.6
7 Marking .6
7.1 Items of marking.6
7.2 Durability of marking .6
7.3 Additional information.6
8 Terminals .7
9 Provision for protective earthing .7
10 Protection against accidental contact with live parts .7
11 Moisture resistance and insulation of type B devices .7
12 Electric strength .8
13 Thermal endurance of devices.8
13.1 General .8
13.2 Tests for type B devices .8
13.3 Tests for type A or type C devices.8
14 Fault conditions .9
15 Construction .9
16 Creepage distances and clearances .9
17 Screws, current-carrying parts and connections.9
18 Resistance to heat, fire and tracking.9
19 Resistance to corrosion .9
20 Performance.9
20.1 Performance requirements for earth-leakage protective devices .9
20.2 Performance requirements for open-circuit protective devices .10
20.3 Performance requirements common to both types of device .10
21 Interchangeability .11
Annex A (normative) - Testing of the response time of earth-leakage protective devices.12
Annex B (informative) - An example method of measuring the performance
of an earth-leakage protective device.14
Annex C (normative) - Test of the response time of open-circuit protective devices .16
Annex D (informative) - A method of measuring the performance
of an open-circuit protective device.18
Figure B.1 - Typical circuit to measure the performance of an earth-leakage protective device .14
Figure D.1 - Typical circuit to measure the performance of an open-circuit protective device .18

1 Scope
This European Standard specifies requirements for earth-leakage and open-circuit protective devices
designed to protect circuits for neon tubes operating from transformers conforming to EN 61050 at
voltages exceeding 1 000 V but not exceeding 10 000 V.
NOTE 1 Requirements for the installation of earth-leakage and open-circuit protective devices are given in EN 50107-1.
NOTE 2 Requirements for earth-leakage and open-circuit protective devices used with inverters and converters are specified
in EN 61347-2-10.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 50107-1:2002, Signs and luminous-discharge-tube installations operating from a no-load rated
output voltage exceeding 1 kV but not exceeding 10 kV - Part 1: General requirements
EN 60529:1991, Degrees of protection provided by enclosures (IP code) (IEC 60529:1989)
EN 60598-1:2000, Luminaires - Part 1: General requirements and tests (IEC 60598-1:1999, mod.)
EN 61050:1992, Transformers for tubular discharge lamps having a no-load output voltage exceeding
1 kV (generally called neon-transformers) - General and safety requirements
(IEC 61050:1991 + corrigendum March 1992, mod.)
EN 61347-1:2001, Lamp controlgear - Part 1: General and safety requirements (IEC 61347-1:2000)
3 Definitions
For the purposes of this European Standard, the definitions given in EN 50107-1 and EN 61347-1
apply, together with the following.
NOTE Where the terms “voltage” and '“current” are used, they refer to r.m.s. values unless otherwise stated.
3.1
type A device
earth-leakage or open-circuit protective device generally designed to be built into the enclosure of a
transformer and not intended to be mounted outside a transformer without special precautions
NOTE A type A device normally protects only the transformer in which it is mounted.
3.2
type B device
earth-leakage or open-circuit protective device consisting of one or more separate elements so
designed that it can be mounted outside a transformer and housed in an enclosure that provides all
necessary protection according to its markings
NOTE 1 The enclosure may consist of the sign in which the device is mounted; the sign having a protection according to its
markings.
NOTE 2 The device may protect more than one transformer.

- 5 - EN 50107-2:2005
3.3
type C device
earth-leakage or open-circuit protective device that forms a non-replaceable part of a transformer and
which normally cannot be tested separately from the transformer
3.4
earth-leakage current
fault current flowing from a point in the output circuit to earth
3.5
open-circuit condition
discnnection or lamp fault in the output circuit that causes the secondary load current of the
transformer feeding the lamp circuit to fall below the respective shut-down current limit
3.6
shut-down current limit
secondary load current of a transformer at which an open-circuit protective device operates
NOTE Although the shut-down current limit is specified in terms of the current flowing in the output circuit, the manufacturer of
the device may measure this by other than direct means. Such means might include, e.g. measuring the current reflected into
the primary winding of the transformer or measuring a change in circuit power factor.
3.7
sensor
device that detects an earth-leakage current or, in the case of an open-circuit protective device,
detects when the secondary load current has fallen below the shut-down current limit, and either
causes a protective switch to operate or otherwise causes the output voltage of a transformer to be
removed
3.8
protective switch
part of an earth-leakage or open-circuit protective device that disconnects the mains supply from a
transformer
3.9
response time
time from the start of the fault condition until the protective device removes the output voltage
3.10
secondary load current
current flowing in the output circuit of transformer supplying one or more tubes
4 General requirements
EN 61347-1:2001, Clause 4, shall apply, with the words “earth-leakage protective device” or “open-
circuit protective device” (as appropriate) substituted for “lamp controlgear”.
5 Tests
5.1 With the exception of EN 61347-1:2001, Subclause 5.4 (see 5.2), EN 61347-1:2001, Clause 5,
shall apply, with the words “earth-leakage protective device” or “open-circuit protective device” (as
appropriate) substituted for “lamp controlgear”.

5. 2 The requirements of EN 61347-1:2001, Subclause 5.4, shall be replaced by the following:
a) a total of ten devices shall be selected at random for the tests;
b) type A devices shall be tested with a representative sample of the associated transformer
in which the device is normally mounted;
c) type B devices shall be tested with transformers having characteristics at either end of the
range specified in accordance with 7.3 h);
d) type C devices shall be tested complete with their associated transformers;
e) three devices, taken at random from the batch of ten, shall be tested in accordance with
the relevant tests specified in this European Standard. The results shall be assessed as
follows:
1) if all three samples pass all the tests, the batch shall be deemed to conform to this
European Standard;
2) if two or more samples fail any of the tests, the batch shall be deemed not to conform
to this European Standard;
3) if one sample fails any of the tests, the tests shall be repeated on a second batch of
three devices;
4) if all three devices from this second batch pass all the tests, the batch shall be deemed
to conform to this European Standard;
5) if any device from this second batch fails any of the tests, the entire batch shall be
deemed not to conform to this European Standard.
6 Classification
EN 61347-1:2001, Clause 6 shall apply, with the words “earth-leakage protective device” or “open-
circuit protective device” (as appropriate) substituted for “lamp controlgear”.
7 Marking
7.1 Items of marking
The following items shall be marked, either:
a) on the device itself, in the case of type A or type B devices; or
b) on the label attached to the transformer in which the device is housed, and in the case of
type C devices with:
1) the number of this European Standard, i.e. EN 50107-2;
2) the items specified in EN 61347-1:2001,
...