Zoeken in normen
918 resultaten
5.3.3.5
Inspections shall be carried out by skilled persons with experience in the inspection
of similar installations. Inspections shall be carried out with suitable equipment
in such a way as to prevent danger whilst taking into account, if necessary, the constraints
imposed by the presence of bare live parts.
5.3.3.5.101 Inspections of electrical work equipment shall, as a minimum, be carried
5.3.3.5.101
Inspections of electrical work equipment shall, as a minimum, be carried out by instructed
persons using suitable measurement devices.
5.101 Inspection of existing electrical installations
5.101.1 General
NOTE Electrical installations also occur in substantial machines, such as:
— concrete mixing plants;
— newspaper and magazine printing presses;
— production lines;
— air conditioning installations;
— transport facilities;
— baggage handling systems;
— slaughter lines.
5.101.2 The time between two successive inspections
5.101.3
Different time intervals can be determined for each installation, each part of an
installation, and for each visual inspection, inspection by measurement and testing,
or a part of this.
5.101.4
Inspections may be carried out by means of a representative random sample according
to a statistically reliable method.
NOTE
Annex J sets out a method for determining samples.
5.101.6.9
It shall be established through measuring that the disconnection characteristics of
switching overcurrent protective devices do not deviate by more than the value at
which the risk becomes unacceptable.The value shall be taken from the manufacturer’s data or from standards.If no data is available a deviation of less than 20 % may be accepted.
In general, the measurement is not required in final
5.102 Inspection of electrical work equipment
5.102.1 General
The electrical installations of extensive, complex and sizeable work equipment shall
be inspected according to
5.101.
Safety functions, such as emergency shutdown switches and collision protection devices
of such extensive, complex and sizeable work equipment shall be checked at least once
a year.
5.102.2 Electrical work equipment shall be inspected with suitable
5.102.3
Different time intervals can be determined for every unit of electrical work equipment
or every group of electrical work equipment and for each visual inspection, inspection
by measurement and testing or a part of this.
NOTE
Annex K provides a normative method that can be used to arrive at a responsible time interval
between two successive inspections of electrical work equipment via risk
5.102.5
Before being used, portable electrical work equipment that is held during use or frequently
touched during use shall always first be visually checked by its user for damage that
may present a hazard.
5.102.13
The leakage current of electrical work equipment of class I may only be measured if
the protective conductor has been measured and found to be in order.
Zoeken in de website
52 resultaten
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