KLING & FREITAG K&F TOPAS - Manual (Page 14)

User's manual System Amplifier K&F TOPAS
KLING & FREITAG GMBH © 2014 Version 3.1 Page 14 of 65
4.3 Mains Connector
Caution
Power supply
Before connecting to the power supply system, check if the local voltage matches the voltage
marked on the device. Connect the device under any circumstances, to an unauthorized
power supply source. This could irreparably ruin the device. The device then needs to be
adapted to the required mains voltage by Kling & Freitag or an authorized service centre.
Make sure that the power outlet supplies a ground connector, which must be connected to
the device via the PE conductor of the power cord!
All equipment, which is connected together using signal cables and has a connection to
protective earth, must be connected to a common PE conductor. If not, there is a risk of an
electric shock or the destruction of the connected equipment. The power plug must always
be used to disconnect from the power supply. Furthermore, the power plug must be easily
accessible for use at all times.
Protection of electrical cables
Power cords should be laid in such a way that they are protected against footstep damages,
tensile strain and against being trapped.
Pay attention to the stated mains voltage under the mains connector. Connection to an
incorrect mains voltage may result in irreparable damage!
After connecting the device to the mains supply (power supply start-up), undefined voltages
may occur at the GPO connectors for approx. 50ms.
In order to deactivate the device completely, you have to disconnect it from the mains
voltage completely.
4.3.1 Dimensioning of Power Supply System and Cool Air Supply
To determine the power consumption in the operating mode - with active power amplifier
section - you must know the rated power of the connected speakers. The average efficiency
of the TOPAS is 65%.
You can estimate the maximum input power based on the peak output of the connected
speakers. The best performance is ensured when the power supply provides the 1.5 fold of
the sum of the peak output of all connected speakers.
If you want to switch on all amplifiers simultaneously, you must observe the inrush current
of 7A. Take advantage of the delay to avoid in order to sequentially turn on the connected
devices and an overload of the power supply system. (see page 40)
To calculate the TOPAS' average heat emission at rated output, multiply the rated power of
the connected speakers by 0.5.
Example:
10 CA1001 in use (5 TOPAS)
CA1001 250W rated power, 500W programme power
Power consumption 10 x 500W x 1.5 = 7500W
Heat: 10 x 250W x 0.5 = 1250W
Design and calculate the installation allowing for a reserve in the waste heat capacity.
When calculating, also take other heat sources near the device into consideration.