INSTALLATION
2-5
Connecting to supply
The instrument is a Safety Class 1 product and therefore must be earthed. Use the supplied power
cord or an appropriate replacement. Make sure that the instrument is plugged into an outlet socket
with a protective earth contact.
Disconnecting device
The detachable power cord is the instrument’s disconnecting device, but if the instrument is
integrated into a rack or system, an external power switch or circuit breaker may be required.
Whatever the disconnecting device, make sure that you can reach it easily and that it is accessible
at all times.
Before connecting the instrument to the AC supply, check the setting of the voltage selector switch
which is an integral part of the supply connector at the rear of the instrument.
Voltage selector
The selected voltage is displayed in a window at the top of the connector. The instrument is
normally despatched with the selector set to 240 V. To select another voltage, insert a screwdriver
into the slot at the top of the moulding and twist slightly so that the cover is free to hinge
downwards. Rotate the barrel so that the correct setting is displayed, see Fig. 2-1.
Setting Voltage
range
limit
100 V
90 - 115 V
120 V
105 - 132 V
220 V
188 - 242 V
240 V
216 - 265 V
Fuses
The correct fuse rating for each voltage setting is as follows:
100 V to 120 V, TT1.6AL250V (1.6 amp double time lag)
220 V to 240 V, TT1AL250V (1 amp double time lag)
Fuses are cartridge type measuring 20 mm x 5 mm.
Fig. 2-1 AC connector showing voltage selector and fuse holders