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Benning ST 750A Manual

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BENNING ST 750 A
In order to detect also short-circuits and body contacts occurring behind the switch-
on elements (switch, thermostat, relay) of the test sample, the test sample must be
switched on.
The test sample must be free of external voltage (disconnected from the mains).
The device is not intended for measurements in electrical systems!
Donotconnectanyexternalvoltagetothe"testsocket"andtothebuilt-injacksorcon-
nectors. The device might get damaged!
Theappliancetestermustbeusedonlyintheoperatingandmeasuringrangesspecied
under"TechnicalData".
Attention! Pressing the <Pause> button will stop the measurement. During the pause,
the test socket will remain live!
Cleaning: Regularly wipe the housing by means of a dry cloth and cleaning agent. Do not use any
polishing agents or solvents!
1.1 Requirements for Testing Personnel
Electrical safety tests of portable electrical equipment can be carried out by compe-
tentpersonsorqualiedelectricians.DuetothedenitionsoftheGermantechnical
guideline foroperational safety"Competent persons– specicrequirements –elec-
tricalhazards"(TRBS"BefähigtePersonen–BesondereAnforderungen–Elektrische
Gefährdungen"),itisnolongerpossibletoletthetestingbecarriedoutonlybyelec-
trotechnically trained persons. However, the electrotechnically trained person can take
overtasksinatestingteam(e.g.qualiedelectrician/electrotechnicallytrainedperson)
withintheframeworkofperiodictestsandthussupportthequaliedelectrician.
Competent Person
In terms of the German Health and Safety at Work Regulation, a competent person is someone
who has the required expert knowledge for the testing of electrical equipment due to his/her vo-
cational education, professional experience and contemporary occupational activity. According to
the German technical guideline for operational safety (TRBS 1203), the competent person must
havenishedanelectrotechnicalvocationaleducationormusthaveanothersimilarelectrotechni-
calqualicationsuitableforthetestingofportableelectricalequipmenttoensureprotectionagainst
electrical hazards. The term professional experience means that the person has at least one year
of experience regarding the installation, assembly or maintenance of electrical equipment and/or
systems. For the intended testing of portable electrical equipment, the competent person must have
the required detailed knowledge of electrical engineering as well as of the relevant electrotechnical
regulations and must regularly update this knowledge. These demands show that safety-related
evaluationofportableelectricalequipmentbasicallyrequirestheattributesofaqualiedelectrician.
Qualified Electrician
IntermsoftheGermanaccidentpreventionregulation"Electricalsystemsandequipment"(BGV/
GUVA3),aqualiedelectricianissomeonewhoisabletoevaluatethetasksassignedtohim/her
due to his/her professional education, knowledge and experience as well as to the knowledge of
the relevant provisions and who is able to recognize possible dangers (as a rule e.g. journeyman
electricians, master electricians, electrical engineering technician, electrical engineer).
Electrotechnically Trained Person
An electrotechnically trained person is someone who has been informed and instructed (if neces-
sary)bythequaliedelectricianregardingthetasksassignedtohim/herandregardingpossible
dangers in case of improper behaviour. Moreover, the electrotechnically trained person has been
instructed with regard to the required protection equipment and protective measures. For all this,
e.g. in-house craftspeople or skilled workers, equipment maintenance personnel or facility manag-
ers can be taken into consideration.
… 5 …


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