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DMX512 REFERENCE GUIDE 19
Configuring Equipment For Delta or Wye Operation
WARNING: Voltage high enough to injure or kill persons exists in the Series 200 ACS rack when power is
applied. Verify that power has been removed from ACS rack before reconfiguring bus bars or performing
other internal work.
Determine requirements for either delta or wye load.
+ While operation as a delta load is typical in the U.S., most European countries require the system to be configured
as a wye load. For example, if the house service is a wye-connected source and the phase-to-neutral voltage is
220, the system must be configured as a wye load.
+ Also note that if line voltage is 120 phase-to-neutral, the system must be configured as a delta load. If line voltage
is 220 phase-to-neutral, the system must be configured as a wye load.
In the Series 200 ACS rack, the system is configured by moving three bus bars. The mini-ACS rack and Series 300
Modular Rack SixPack chassis use a switch. The SixPack chassis has a switch lock that must be removed before the
switch can be moved from one position to the other. This prevents accidental switching.
Figure 1-6: Setting Delta/Wye Configuration in Series 200 and Series 300 Equipment
Typ e
VAC
Phase to
Neutral
VAC
Phase to
Phase
Delta/Wye
Jumper
Position
Voltage
to
Modules
Wye
100-130 175 - 225 Delta 175 - 225
Wye
180 - 240 310 - 415 Wye 180 - 240
Delta
- 180 - 240 Delta 180 - 240
Single Phase
180 - 240 - Wye 180 - 240
Delta
Wye
Mini-ACS Rack
SixPack Chassis
Delta / Wye Switch
ACS Rack
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