SPE EXPERT 1K-FA, Руководство пользователя

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User’s manual EXPERT 1K-FA
Pag. 17 of 76
7. POWER SUPPLY
The power supply unit of the SPE Expert 1K-FA has two blocks with two separate
power transformers.
The first block has regulated and protected voltages, and powers all the electronic
circuits for command and control.
The second block powers only the PA. It has a toroidal transformer with a low magnetic
field to avoid disturbances to nearby equipment. The output voltages are 44 Vdc (on
FULL-power mode) and 30 Vdc (on HALF-power mode), regulated with SCRs that also
provide ‘soft start’ on switch-on.
This design was adopted as it provides maximum efficiency and therefore less heat to
dissipate.
7.1 Mains cable termination
Your dealer will ensure that a mains plug appropriate for the country of use is fitted.
If the amplifier is used in a country other than that of the original purchase, refer to your
dealer for assistance.
The default mains voltage supply of the amplifier is 230 Vac (210-250 Vac).
It may be set to 215, 200, 115 and 100 Vac also.
To change the operating voltage see below:
WARNING! -
REMOVE THE MAINS CORD FROM THE WALL SOCKET AND
WAIT AT LEAST 2 MINUTES FOR CAPACITORS TO DISCHARGE.
Only then, remove the bottom cover, the plastic protection and connect following the
diagrams below:
blue (white)
green/yellow (green)
brown (black)
The green / yellow wire from AC power cable must be
connected to the ground wire.
The blue and brown wires from the AC power cable
can be connected to either terminal.
The green / yellow wire from AC power cable must be
connected to the ground wire.
The blue wire from AC power cable must be
connected to the hot (live) wire.
The brown wire from AC power cable must be
connected to the return wire.
Single-phase 3-wire line (210-250 VAC
Single-phase 2-wire line (105-125 VAC)
blue (white)
green/yellow (green)
brown (black)