Installation - TTI QL355T Manual Del Usuario

Check that the instrument operating voltage marked on the rear panel is suitable for the local
supply. Should it be necessary to change the operating voltage, proceed as follows:
1) Disconnect the instrument from all voltage sources.
2) Remove the screws which retain the top cover and lift off the cover.
3) Change the connections on both transformers following the appropriate diagram below:
4) Refit the cover and the secure with the same screws.
5) To comply with safety standard requirements the operating voltage marked on the rear panel
must be changed to clearly show the new voltage setting.
6) Change all three fuses to ones of the correct rating, see below.
Fuse
The AC inlet fuse is located in the fuse drawer in the lower part of the IEC inlet connector. To
change the fuse remove the line cord and open the fuse drawer with a suitable tool.
The correct mains fuse type is 20 x 5mm 250V HBC time-lag with the following rating:
In addition, the two transformers are individually fused inside the power supply. To access these
fuses remove the cover as described above; both fuses are clipped to the small PCB which is
fitted directly onto the pins of the IEC inlet connector itself.
The correct fuse type is 20 x 5mm 250V HBC time-lag with the following rating:
Make sure that only fuses with the required current rating and of the specified type are used for
replacement. The use of makeshift fuses and the short-circuiting of fuseholders are prohibited.
Mains Lead
When a three core mains lead with bare ends is provided it should be connected as follows:-
Any interruption of the mains earth conductor inside or outside the instrument will make the
instrument dangerous. Intentional interruption is prohibited. The protective action must not be
negated by the use of an extension cord without a protective conductor.
BROWN BROWN BLUE
230V
for 230V operation:
for 115V operation:
for 230V operation:
for 115V operation:
Brown -
Blue -
Green / Yellow -
WARNING! THIS INSTRUMENT MUST BE EARTHED
BROWN
115V
4A (T) 250V HBC
8A (T) 250V HBC
1.6A (T) 250V HBC
3.15A (T) 250V HBC
Mains Live
Mains Neutral
Mains Earth

Installation

BLUE
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