AudioQuest Niagara 7000EU Manuel du propriétaire - Page 15

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The main power rocker switch/circuit breaker tripped to the lower (off) position

while the system was playing.

You may have exceeded the maximum current capacity of the Niagara 7000EU. This should be rare, but it may

be possible. Typical power amplifiers draw about one-third of their maximum current consumption at 230VAC,

as listed in the product's specifications (typically found in their owner's manual). This is further complicated

by the fact that the power consumption to the AC outlet banks 3 and 2 is an additional draw on the maximum

current capacity of 16 amps that will trip this switch/magnetic circuit breaker.

The Transient Power Correction Circuit may also contribute to the overall draw seen by the circuit breaker. Still,

it should be rare that the total capacity is exceeded, but, given that some televisions, projectors, and power

amplifiers can draw substantial current, it is certainly not impossible. If this is the case, an additional Niagara

7000EU or Niagara 5000EU, and a discrete 16 amp AC service on the same phase of the electrical panel (for

buildings with a 3 phase service), will be required for some or all of the power amplifiers.

When a component was plugged into one of the Ultra-Linear Dielectric-Biased

Symmetrical Power outlets and switched on, the main power rocker switch/circuit

breaker tripped to the lower (off) position.

You have likely tripped the GFCI circuit (ground fault protection). This circuit ensures that even in the event of a

catastrophic failure to the connected components' power supply and/or circuits (demonstrated by full shorting

and possible smoke) there will be no AC voltage on the components' chassis that could possibly shock a person.

This circuit instantly recognizes if there is more than 5.5mA of current leakage from Line to AC Ground, or

Neutral to AC Ground. This is the maximum current allowed for ALL 8 of the Symmetrical AC outlets. If this

current leakage is detected, the main power switch/magnetic circuit breaker will immediately switch off, thus

protecting the system operator and all others that might come in contact with the system.

It is very rare for this circuit to trip. If it does, the connected component that causes this is either defective (most

likely), or it (and possibly another component on the same Symmetrical Power bank) may have a combined

current leakage to ground that exceeds 5.5mA. Technically, this is not allowed in modern electronic circuit

design, but that does not necessarily mean an otherwise well-performing product with an "unconventional"

power supply is unsafe to use. Such a component may need to be used with either the Niagara 7000EU's high-

current AC outlets, which do not utilize the GFCI protection circuit, or they may be powered by another discrete

AudioQuest Niagara Series power product, thus preventing the GFCI nuisance tripping.

As a final check, inspect the GFCI test button on the left side of the Niagara 7000EU's front panel. It is a momentary

switch and it will not latch; by pressing it lightly into the chassis, it will activate the GFCI protection circuit and

trip the main power switch/magnetic circuit breaker. Though extremely rare, it is possible that the switch could

be stuck in an "on" position from taking a blow during shipping. (The rest of the unit may be perfectly fine, but

the tolerance of this test button switch to the chassis and front panel is tight.) When pressed, the switch should

exhibit some "travel" or "give" and should not feel binding in any way. If the switch feels tight or stuck, there may

be a problem. (This will require servicing, so please be certain.)

My power amplifiers sound muddy, compressed, or weak.

The Transient Power Correction Circuit may not be operating. Be sure that all power amplifiers, powered receivers,

powered loudspeakers, and or powered subwoofers are plugged into the High Current/Power Correction

AC outlets. If any of these are plugged into the Ultra-Linear Dielectric-Biased Symmetrical Power outlets, the

connected power amplifier(s) will be current compressed, as the impedance is too high for any power amplifier.

If the power amplifier(s) are plugged into the High Current/Power Correction AC outlets, make certain that the

rear-panel Power Correction switch is in the "Engaged" position. Although it is possible for the Power Correction

Circuit to work properly while the switch is in the "Bypass" position (see "Power Correction Switch," page 6), you