Violectric HPA V280, Руководство пользователя

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11
THE CASE
The HPA V280's case as well as the front or rear panels are made of
solid aluminium. This choice of material ensures high mechanical
stability and resistance.
EARTH AND GROUND
The HPA V280's case is grounded. Internal reference ground is bridged
to protective earth by means of a jumper. If required, the jumper can be
set to 'LIFT' position (see also: page 7 "Earth/Ground concept" and
page 25 "Technical Appendix").
POWER SUPPLY
Mains power is provided via a three-pin IEC/CEE socket and mating
"cold-appliance" mains cord with a dedicated wall plug. The device is
set to 230 or 115 V AC mains internally, whereas the actual voltage may
vary between 190
… 240 V for 230 V and 85 … 120 volts for 115 V for
flawless operation. Altering the mains voltage can easily done by a
simple internally accessible switch. Two large toroidal transformers are
providing the internal operating voltages.
MAINS FUSE
The 0.25A time-lag fuse is soldered in place on the circuit board. In
case, it must be replaced with a fuse of the same type only.
CAUTION !!
MIND THE SAFETY INSTRUCTIONS:
A blown fuse indicates an internal fault and
should be replaced during qualified repair or
servicing only !!