HP E42 Model 5328A Safety Considerations, F E T Y C O N S I D E R a T I O N S General, Operation

Model 5328A

Safety Considerations

S A F E T Y C O N S I D E R A T I O N S

GENERAL

This is a Safety Class I instrument. This instrument has been designed and tested according to IEC Publication 348, “Safety Requirements for Electronic Measuring Apparatus.”

OPERATION

BEFORE APPLYING POWER verify that the power transformer primary is matched to the available line voltage and the correct fuse is installed (see Section II). Make sure that only fuses with the required rated current and of the specified type (normal blow, time delay, etc.) are used for replacement. The use of repaired fuses and the short-circuiting of fuseholders must be avoided.

SERVICE

Although this instrument has been designed in accordance with international safety standards, this manual contains information, cautions, and warnings which must be followed to ensure safe operation and to retain the instrument in safe condition. Service and adjustments should be performed only by qualified service personnel.

Any adjustment, maintenance, and repair of the opened instrument under voltage should be avoided as much as possible and, when inevitable, should be carried out only by a skilled person who is aware of the hazard involved.

Capacitors inside the instrument may still be charged even if the instrument has been discon- nected from its source of supply.

Whenever it is likely that the protection has been impaired, the instrument must be made in- operative and be secured against any unintended operation.

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