Fluke PM3370B user manual Safety Instructions, Installation Instructions, Protective earthing

INSTALLATION INSTRUCTIONS 2 - 1

2 INSTALLATION INSTRUCTIONS

Attention: You are strongly advised to read this chapter thoroughly before installing your oscilloscope.

2.1 SAFETY INSTRUCTIONS

2.1.1Protective earthing

Before any connection to the input connectors is made, the instrument shall be connected to a protective earth conductor via the three-core mains cable; the mains plug shall be inserted only into a socket outlet provided with a protective earth contact. The protective action shall not be negated by the use of an extension cord without protective conductor.

WARNING: Any interruption of the protective conductor inside or outside the instrument is likely to make the instrument dangerous. Intentional interruption is prohibited.

WARNING: When an instrument is brought from a cold into a warm environment, condensation may cause a hazardous condition. Therefore, make sure that the grounding requirements are strictly adhered to.

2.1.2Mains voltage cord, mains voltage range and fuses

Before inserting the mains plug into the mains socket, make sure that the instrument is suitable for the local mains voltage.

NOTE: When the mains plug has to be adapted to the local situation, such adaption should be done by a qualified technician only.

WARNING: The instrument shall be disconnected from all voltage sources when a fuse is to be renewed.

The oscilloscope has a tapless switched-mode power supply that covers most nominal voltage ranges in use: ac voltages from 100 ... 240 V (r.m.s.). This obviates the need to adapt to the local mains (line) voltage. The nominal mains (line) frequency range is 50 Hz ... 400 Hz.

Line fuse rating: 3.15 AT delayed action, 250 V (for ordering code see "INITIAL INSPECTION").