TOA Electronics TA 1400 - Manual (Page 10)

6.3 Operating voltage
WARNING!
!
A label just below the mains cable on the rear of the amplifier indicates the AC
mains voltage, for which the amplifier is wired. Connect the power cable only to the
AC source referred to on the label. The warranty will not cover damage caused by
connecting to the wrong type of AC mains.
If the power plug is not appropriate for your country, it can be cut off and wired to a suitable
connector in the following way:
BLACK or BROWN
LIVE
WHITE or BLUE
NEUTRAL
GREEN or GREEN/YELLOW
EARTH
Once the AC connector is connected to a suitable AC supply, the amplifier can be started with the
power switch. When you power up the amplifier it takes a couple of seconds to check its circuits (this
is known as the "soft start" or "slow start" sequence), the fans then blow at high speed before going
into "idle" and the two bottom green LED’s come on to show the output circuits are receiving the
correct rail voltage.
6.4 Denmark:
National deviation concerning installation of the TA 1400:
Danish safety regulation only permits 8A main fuse. As the TA 1400 use an internal primary mains
fuse of 15A, TA 1400 must be equipped with an industrial mains connector rated for 16A, or as an
alternative be fixed installed to a 16A circuit.
6.5 Switzerland:
National deviation concerning installation of the TA 1400:
Swiss safety regulation stipulates that mains connector of the type 23 must be used.
6.6 Grounding
There is no ground lift switch or terminal on this amplifier. The signal ground is always floating via a
resistor to chassis and the grounding system is automatic. If a potential above 0.6V presents itself
between signal ground and chassis ground, a short circuit is introduced between the two, thereby
enabling electrical protection. If a unit in the system is faulty, its mains fuse will blow, due to this
automatic ground system.
If however you wish to tie the signal ground to chassis, connect the XLR-connector’s shell lug to pin
1. In the interest of safety never disconnect the earth pin on the AC power cord.
For all units that are CE approved (radio interference), there is an AC mains filter. This filter needs
the chassis ground for reference, otherwise a current loop is formed via the signal ground.
Use the balanced input to avoid hum and interference.
6.7 Power consumption
There are three ways to determine the power/current consumption of the amplifier:
First, the peak current draw at full output power. Under this condition the power will blow the mains
breaker within 30 second and the amplifier will operate for less than 2 minutes before thermally
limiting. During this time, the temperature of the power supply will be stabilised at a temperature
that will have no effect on the insulation rating of the AC line cord.
Second, the maximum expected average current under worst case program material which is 1/3
of full power according to the FTC-standard. At this level the music will be in the state of
constant
Tannoy Limited
TA 1400 User Manual 11-06-02
9