Camco Q-POWER 14, Руководство пользователя

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Q - P O W E R 14
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P O W E R A M P L I F I E R
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M A I N S S U P P L Y
3.7 FuseProtect™ Limiter - Mains Circuit Breaker selection
The integrated FuseProtect™ feature will at all times limit the mains current draw
to the maximum current handling capabilities of the specific programmed MCB
for each mains voltage range.
When shipped, the
Q-POWER 14
is programmed with default MCBs for each
mains voltage range. These are:
>
16 A C-type for the ROW range
>
30 A for the America range
>
30 A for the Japan range
The appropriate MCB is automatically loaded each time the
Q-POWER 14
is
powered up.
If needed for a specific installation, the user has the option to customise the
MCB for each voltage range with the help of the
CAMCO USB MCB Updater
application. This application also allows to update the power supply’s firmware.
Please check our website for latest updates.
à
See also chapter 6.3.
! WARNING!
For safety reasons, do never operate the Q-POWER 14 directly on larger
breakers than 32 A. The powerCON ® mains plug, the mains cable and the
Q-POWER 14 ’s internal hardware is not designed for use on larger breakers
(because of theoretically to small current carrying capacity in comparison
to the installed MCB in case of an installation short-circuit). So do never
“share” one large breaker (e.g. 50 A or 64 A) for two or more
Q-POWER 14
amplifiers.
Only in case the Q-POWER 14 is programmed with a MCB smaller or equal 16 A
it is allowed to share a 32 A MCB for two or more amplifiers.
But still we suggest to always use one breaker for each amplifier, as this also
increases system robustness and selectivity in case of an installation problem.
If desired, the user has the option to select a MCB as high as 32 A even for
the “ROW” mains voltage range, effectively doubling the long term input current
capacity (compared to the default 16 A MCB).
l
NOTE
Please make sure to always use appropriate mains cables and plugs offer-
ing sufficient current rating for the selected MCB. For instance it is
not
allowed to use the european 16 A “Schuko” plug when selecting larger
breakers than 16 A. In this case the plug would be operated above it’s
current specification and could get extremely hot, potentially creating iso-
lation or fire hazards.
Using larger MCBs in the ROW range will drastically raise the long-term output
power capacity of the
Q-POWER 14 , especially when driving small loudspeaker
impedances on all channels. This is because the FuseProtect™ limiter will only
take action much later than with the default 16 A MCB, effectively offering higher
output powers over a longer period of time (up to minutes or hours). But note
that the max. achievable peak power is not affected by selecting a larger MCB.
On the other hand, higher long-term output power will result in increased heating
of the amplifier stages. So be aware that the amplifier module’s thermal limitation
might occur more easily when running the
Q-POWER 14 with continuous mains
currents larger than approx. 20 A over longer periods of time. Thermal limitiation
will result in reduced output level, possibly slight audio quality loss or even (in
extreme situations) in short term amplifier module switch-off.
Please note that all MCBs always allow for much higher peak currents than their
rated values before tripping. For example a 16 A breaker with C-type tripping
characteristic will tolerate peak currents up to 80 A. The
Q-POWER 14 FusePro-
tect™ limiter will exaclty calculate the MCBs workload and always limit the actual
mains current to values just below the tripping zone of the installed breaker. This
offers maximum output power headroom for your show while at the same time
protecting your electrical installation from being stressed beyond it’s limits.