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NEN 3140:2011+A3:2019 en
Nederlandse norm
NEN 3140+A3
(en)
Operation of electrical installations - Low voltage
Bedrijfsvoering van elektrische installaties -
Laagspanning
ICS 29.240.01; 91.140.50
juli 2019
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— adequate lighting, and
— escape routes.
Precautions shall be taken to prevent injury to persons from hazards other than electrical dangers.
NOTE Examples of hazards other than electrical dangers are:
— mechanical hazards (e.g. due to rotating machines);
— physical hazards (e.g. due to pressurized systems);
— personal hazards (e.g. the risk of falli
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NOTE The testing methods described in this standard are the preferred ones. Other testing methods are not
ruled out, provided that they give results of t he same level of reliability.
5.3.2.2 Testing an electrical installation which has been made dead shall be carried out in
accordance with the rules of dead working.
If earthing and short -circuiting devices
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5.101.5.8 Examples of different electrical circuits are the primary and secondary sides of a safety
transformer and different circuits of switchg ear and distribution equipment. The in sulation resistance
is measured with a measuring voltage of at least 250 VDC.
5.101.5.9 It shall be established through measuring that the response time for the nominal response
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— baggage handling systems;
— slaughter lines.
Safety functions, suc h as emergency stop switches and collision pr otection devices, of this extensive,
complex and sizeable work equipment shall be checked at least once per year.
5.102.2 Electrical work equipment shall be inspected at suitable intervals.
The time between two successive inspections depends
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NOTE The maximum deactivation time of an earth leakage circuit breaker for the nominal response current is
300 ms. The deactivation time of a selective eart h leakage circuit breaker for the nominal response current
should be between 130 ms and 500 ms.
5.102.19 Examples of safety systems are: emergency stop circuits and safety switches on barriers for
moving
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6.3.1.102 Work activities in the live working zone may only be carried out by persons who have
been expressly nominated for these activities or who work under uninterrupted supervision by such
nominated person.
6.3.1.1 03 The necessary protection against arc flash is determined by the values of the upstream
safety device(s).
Table 106 — Necessary protection
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b) semi -permanent installations, as may occur:
1) on recreational sit es;
2) in mobile homes and seasonal dwellings;
c) temporary electrical installations, such as in:
1) building works;
2) demolition sites;
3) funfairs;
4) exhibitions;
d) electrical business premises;
e) rooms for measuremen t and testing;
f) battery rooms, battery cabinets
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— connected to an earth leakage circuit breaker with a nominal response current of a maximum of
30 mA.
If this is not possible a comparable safety level shall be reached, based on a risk assessment.
6.101.3 Work activities in damp environments
Work ac tivities in the live working zone in a damp environment may only be carried out dead with the
exception of
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NOTE The use of barrier structures is recommended, such as fully shrouded bus and plug connections
according to the NEN -EN -IEC 61010 series.
6.102.5 To promote the correct attitude as regards safety, extr a attention shall be paid to:
— deliberately earthing metering or test setups, depending on the power su pply source and the
system;
— using the
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Nieuwe NEN 3140 sterk doorontwikkeld
Als trainer en adviseur NEN 3140, werk ik nu alweer een paar weken met de nieuwe NEN 3140 + A2 (December 2018). Deze nieuwe NEN 3140 is sterk doorontwikkeld. Veel zaken waar je in de praktijk vaak tegen aanloopt, zijn nu scherper en concreter geformuleerd. Ook zijn technische, organisatorische en maatschappelijke ontwikkelingen meegenomen in deze nieuwe uitgave.
Dat begint al bij de installatieverantwoordelijke
Veiligheid mag geen sluitpost zijn
Juridisch adviseur geeft uitleg over het belang van NEN 3140
Veiligheid is van groot belang bij elektrotechnische installaties. De norm NEN 3140 beoogt deze veiligheid voldoende te waarborgen. Toch is er in de praktijk nog wat te winnen, stelt mr. Klaas van der Kolk van juridisch advies- en trainingsbureau Nova Juridica. “Uiteindelijk gaat het erom dat iedereen aan het eind van de dag weer veilig