6
Installation
Mains Operating Voltage – Instrument Power
Before making connections to the AC line source ensure that the operating voltage of the
instrument is correctly set. The operating voltage is indicated by the orientation of the fuseholder.
When the 230V marking is upwards, the unit is set for operation over the range 220V to 240V.
When the 115V marking is upwards, the unit is set for operation over the range 110V to 120V. To
change the operating voltage range, remove the AC line plug, pull out the fuse holder, replace
the fuse with one of the appropriate rating (see below) and rotate the fuse holder before pushing
it firmly back into place.
Safety Note:
To fully disconnect the Instrument Power from the AC supply, unplug the mains
cord from the INSTRUMENT POWER inlet or from the AC supply outlet.
Mains Operating Voltage – Load Power
The fixed
LOAD POWER
mains lead is an independent connection, which provides power to the
appliance connector on the front panel; it can be at a different voltage and frequency from the
instrument power. The maximum permitted load power voltage is 264Vrms and the frequency
range is 43 - 67Hz.
For full compliance measurements to EN61000-3-2 the load power lead should be connected to
an AC supply that meets the voltage, frequency and harmonics requirements defined in the
standard; the AC1000 low distortion power source can be used for this purpose.
Safety Note:
To fully disconnect the Load Power from the AC supply, unplug the mains cord
from the AC supply outlet.
Fuse – Instrument Power
The correct time-lag fuse must be fitted for the selected operating voltage.
For 230V operation use 250mA (T) 250V time-lag HBC
For 115V operation use 500mA (T) 250V time-lag HBC
Make sure that only fuses with the required rated current and of the specified type are used for
replacement. The use of makeshift fuses and the short-circuiting of fuse holders are prohibited.
Fuse – Load Power
A high voltage, high breaking current, fuse is fitted internally in the load power circuit. The correct
fuse type is: 20A 500V HBC Type aM or gL.
Make sure that only fuses with the required rated current and of the specified type are used for
replacement. The use of makeshift fuses and the short-circuiting of fuse holders are prohibited.
Mains Lead
Connect the instrument to the AC supply using the mains lead provided. Should a mains plug be
required for a different mains outlet socket, a suitably rated and approved mains lead set should
be used which is fitted with the required wall plug and an IEC60320 C13 connector for the
instrument end. To determine the minimum current rating of the lead-set for the intended AC
supply, refer to the power rating information on the equipment or in the Specification.
WARNING ! - THIS INSTRUMENT MUST BE EARTHED
Any interruption of the protective conductor inside or outside the instrument will make the
instrument dangerous. Intentional interruption is prohibited.