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Chapter 1 47
Getting Started
Safety Considerations
Safety Considerations
This section covers safety considerations relating to the installation and
use of the instrument.
Instrument Installation
Install the instrument so that the detachable power cord is readily
identifiable and is easily reached by the operator. The detachable power
cord is used to completely disconnect the instrument. The front panel
switch is only a standby switch which maintains standby power to some
parts of the instrument. It does not disconnect the instrument from the
power source. Alternatively, an externally installed switch or circuit
breaker (which is readily identifiable and is easily reached by the
operator) may be used as a disconnecting device.
The input power ranges for the power supply are 90 to 132 V, or 195 to
250 Vrms. The power supply automatically senses the input power and
switches between these two ranges. There is no customer replaceable
power fuse.
WARNING The power cord is connected to internal capacitors that may
remain live for 5 seconds after the plug is disconnected from its
power supply.
WARNING If this product is to be energized via an external
autotransformer for voltage reduction, make sure that its
common terminal is connected to a neutral (earthed pole) of the
power supply.
CAUTION This instrument has autoranging line voltage input, be sure the supply
voltage is within the specified range.
CAUTION VENTILATION REQUIREMENTS: When installing the product in a
cabinet, the convection into and out of the product must not be
restricted. The ambient temperature (outside the cabinet) must be less
than the maximum operating temperature of the product by 4° C for
every 100 watts dissipated in the cabinet. If the total power dissipated
in the cabinet is greater than 800 watts, then forced convection must be
used.