5 Work and safety instructions
General
Trainees should only work with the circuits under the supervision of an instructor.
Observe the specifications included in the technical data for the individual components, and in
particular all safety instructions!
Malfunctions which may impair safety must not be generated.
Wear personal safety equipment (safety glasses, safety shoes) when working on circuits.
Electrical safety
Risk of death in case of interrupted protective earth conductor!
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The protective conductor (yellow-green) must not be interrupted, either inside or outside
of the device.
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The insulation of the protective conductor must never be damaged or removed.
Risk of death from connecting power supply units in series!
Contact voltages of greater than 25 V AC or 60 V DC are not permissible.
Coming into contact with voltages of greater than 50 V AC or 120 V DC may be fatal.
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Do not connect voltage sources in series.
Risk of death due to electric shock!
Protect the outputs of the power supply units (output sockets/terminals) and cables connected to them
from direct contact.
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Only use cables with adequate insulation and electric strength.
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Use safety sockets with fully shrouded contact points.
Disconnect from all sources of electrical power!
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Switch off the power supply before working on the circuit.
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Please note that electrical energy may be stored in individual components.
Further information on this issue is available in the data sheets and operating
instructions included with the components.
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Caution!
Capacitors inside the device may still be charged even after being
disconnected from all sources of voltage.
Establishing and disconnecting electrical connections
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Electrical connections may only be established in the absence of voltage.
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Electrical connections may only be disconnected in the absence of voltage.
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