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I.2.1 Factor A: the age of the installation
The installation is:
A1
less than 10 years old.
Weighting: 0
A2
more than 10 years old.
Weighting: 5
A3
more than 20 years old.
Weighting: 8
A4
more than 30 years old.
Weighting: 10
I.2.3 Factor C: the environmental conditions
C1
The environment in which the installation is used:
a)
is clean and dry,
b)
contains no explosive or corrosive gases,
c)
presents no fire hazard as a result of dust, and
d)
is free of transport equipment or heavy equipment.
Weighting: 0
C2
The environment in which the installation is used:
a)
is not clean and dry or
b)
contains explosive or corrosive gases or
c)
presents a fire
I.3 Determining the time between two successive inspections
I.3.1 The time between two successive inspections is determined on the basis of the sum
of the factors A to E, using table I.1 in conjunction with
figure I.1.
Table I.1
—
Determining the sum of the factors A to E
Factor
Code
Weighting
Results
A
A1
0
A2
5
A3
8
A4
10
B
B1
0
B2
2
B3
4
B4
7
B5
15
C
C1
0
C2
10
C3
20
D
D1
J.4.3
The batch size is the collection of products assembled in the same way from which
the random sample shall be taken and inspected to determine whether the approval criteria
are complied with.
J.4.6
The random sampling units shall be chosen at random from the batch, without regard
to quality.
K.1 The time between two successive inspections
The time between two successive inspections of electrical work equipment shall be
determined by:
A) the frequency of use;
B) the expertise of the users;
C) the environment;
D) the chance of damage.
K.3 Determining the time between two successive inspections
K.3.1 The time between two successive inspections is determined on the basis of the sum
of the factors A to D, using
table K.1 in conjunction with
figure K.1.
Table K.1
—
Determining the sum of the factors A to D
Factor
Code
Weighting
Results
A
A1
10
A2
0
B
B1
0
B2
10
C
C1
0
C2
10
C3
15
D
D1
0
D2
10
D3
15
Total
K.3.2 Read out the
K.3.2
Read out the time between two successive inspections from
figure K.1.
Figure K.1
—
The time between two successive inspections
L.2
The actual earth leakage current can also be measured by measuring the differential
current in the live parts of the connection.
L.4
Due to the difficulty of measuring the actual earth leakage current, the replacement
earth leakage current is often measured. The live parts are interconnected here. An
alternating voltage is applied between the live parts on the one hand and the protective
conductor or the exterior conducting parts of the item of electrical work equipment
on the other. The current measured is the replacement earth
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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