Installation - Aim TTi LCR400 Manual De Instrucciones

Mains Operating Voltage
The operating voltage of the instrument is shown on the rear panel. Should it be necessary to
change the operating voltage from 230V to 115V or vice-versa, proceed as follows:
1. Disconnect the instrument from all voltage sources.
2. Remove the 6 screws which hold the case upper to the chassis and lift off, noting the flat
cable connector positions.
3. Remove the 4 screws securing the power supply pcb to the chassis and lift the pcb free.
4. Change the appropriate zero-ohm links beside the transformer on the pcb:
Note that, if the change of operating voltage is accompanied by a change of supply
frequency, optimum common mode rejection of the mains will be achieved by setting the
internal 100/120Hz selection to 100Hz for 50Hz supply and 120Hz for a 60Hz supply.
This is set by the status of link LK2 which is situated immediately below the oscillator
module on the main circuit board. With no shorting link fitted to the pins the frequency is
set to 100Hz; if a shorting link is fitted it is set to 120Hz. The factory setting for 230V
operation is 100Hz and for 115V operation is 120Hz. If LK2 is changed from the factory
setting the unit will need to be recalibrated at the new frequency setting (calibration
settings for 100Hz and 120Hz cannot be held simultaneously).
5. Refit the pcb to the chassis, ensuring all connections (especially safety earth) are remade
as before, and refit the case upper.
6. To comply with safety standard requirements the operating voltage marked on the rear
panel must be changed to clearly show the new voltage setting.
7. Change the fuse to suit the new operating voltage, see below.
Fuse
The correct time-lag fuse must be fitted for the selected operating voltage.
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.
Any interruption of the mains earth conductor inside or outside the instrument will make the
instrument dangerous. Intentional interruption is prohibited.
Link LK4 only for 230V operation
Link LK3 and LK5 only for 115V operation
For 230V operation use 125mA (T) 250V HBC.
For 115V operation use 250mA (T) 250V HBC.
WARNING! THIS INSTRUMENT MUST BE EARTHED

Installation

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