PRG Controlling VARI-LITE Equipment Using DMX 512 - Manual (Page 36)

DMX512 R EFERENCE G UIDE
2 8 02.3004.0300.54
Bucking Transformer
Note: In Europe, the Bucking Transformer is needed only with VL2C luminaires and where the
primary voltage rises above 240 VAC (245 VAC in Europe).
The Bucking Transformer is used when the primary voltage is
above 240 volts (or 245 volts in Europe). In Europe and Australia,
among other places, primary voltages can fluctuate between 240
and 265 VAC throughout the day, causing the system to shut
down. The Bucking Transformer is designed to reduce the
primary voltage by 10 or 20 percent, bringing voltages within
acceptable limits. Even if there is a temporary reduction in
primary input voltage below 180 VAC (the lower limit), once the
system is running, it will not actually shut off until the voltage
falls to 160 VAC. The Bucking Transformer is only necessary
where the primary voltage rises above 240 VAC (or 245 VAC in
Europe).
The unit connects to the system by a set of five 2/0 pig tails. It also
provides a 125A circuit breaker switch.
Figure 2-3: Bucking Transformer
INPUT OUTPUT
Neutral (White)
X Phase (Black)
Y Phase (Red)
Z Phase (Blue)
Ground (Green)
Neutral (White)
X Phase (Black)
Y Phase (Red)
Z Phase (Blue)
Ground (Green)
Bare wire to Cam-Lok pigtails
from House AC service Cam-Lok to Cam-Lok pigtails
to ACS or Mod Rack