user manual
TFS-780
TFS-780 user manual
Page 42
Safety Earthing
The Green/Yellow wire on the TMC-750 and TMC-1250’s mains cord must always be
connected to the electrical installation's safety Earth (or Ground). It is essential for personal
safety. The rack framework is connected to the same grounding circuit.
Internal Fuses
The fuses are as follows:
Mains: 10A, 20mm; type H. DC rails: 2 x 250mA, 20mm 3.15mA anti-surge
Should one or more fuses blow, make a single replacement after checking for and
eliminating any obvious causes. If the replacement fuse should blow, please contact your
local dealer for service.
It is most important that all fuses are replaced with the correct specified type, i.e. equivalent
to those supplied.
Voltage Setting
Your models will be set up at the factory for correct operation on your local voltage supply.
No further adjustment is necessary.
Voltage Range
The minimum supply voltage over which the amplifier will operate is 180V for the 220-240V
range, and 90V for the 110-120V range. Naturally, maximum power output will be reduced
accordingly from the published ratings.
The maximum supply voltage which exceeds safe limits and causes the amplifiers to switch-
off is in excess of 260 V for 220/240 V range, and 130 V for the 108/120 V range. This is
however dependent on load impedance and program drive level as mentioned above.
Obviously, the mains voltage will reach these limits only in exceptional circumstances and
the FAULT LED will then flash.
Current Consumption
The full drive current requirements are: (True rms Amperes)
nominal 240V supplies
nominal 240V suppliesnominal 240V supplies
nominal 240V supplies TMC-750
TMC-750TMC-750
TMC-750 TMC-1250
TMC-1250TMC-1250
TMC-1250
Continuous sinewave full power 11 Amps 14 Amps
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