Meyer Sound UPQ-D Series, Operating Instructions Manual

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CHAPTER 2: POWER REQUIREMENTS
14
230 V AC, 3-Phase Wye System (Single Line)
Line-Neutral-Earth/Ground
Figure 5 illustrates a basic 230 V AC, 3-phase Wye
distribution system with the loudspeaker load distributed
across all three phases and with each loudspeaker
connected to a single line and common neutral and earth/
ground lines. This system delivers 230 V AC to each
loudspeaker.
CAUTION: For 230 V AC, 3-phase Wye
systems, never connect two lines to the AC
input of a UPQ-D Series loudspeaker, as the resulting
voltage would exceed the upper voltage limit
(275 V AC) and will damage the loudspeaker.
AC CONNECTORS
The UPQ-D Series loudspeaker user panel includes two
powerCON 20 connectors (Figure 6), one for AC Input (blue)
and one for AC Loop Output (gray).
AC Input (Blue)
The blue AC Input connector supplies power to a
UPQ-D Series loudspeaker. The 3-conductor powerCON 20
is rated at 20 A and uses a locking connector that prevents
accidental disconnections. A 10-foot AC power cable, rated
at 15 A, is included with each loudspeaker. If the included
AC power cable is replaced, make sure to use a cable with
the appropriate power plug (on the other end) for the region
where the unit will be operated. The UPQ-D Series require a
grounded outlet. To operate safely and effectively, it is
extremely important that the entire system be properly
grounded.
The AC Input connector also supplies power to any
additional loudspeakers connected to the loudspeaker’s
gray Loop Output connector.
CAUTION: When looping AC power for
loudspeakers, do not exceed the current
capability of the AC Input connector (20 A) or the
included AC power cable (15 A). Consider the total
current draw for all loudspeakers on the circuit,
including the first loudspeaker (Table 1).
AC Loop Output (Gray)
The gray AC Loop Output connector allows multiple
UPQ-D Series loudspeakers to be looped and powered from
a single power source. The 3-conductor powerCON 20 is
rated at 20 A and uses a locking connector that prevents
accidental disconnections. For applications that require
multiple UPQ-D Series loudspeakers, connect the AC Loop
Output of the first loudspeaker to the AC Input of the second
loudspeaker and so forth.
The maximum number of loudspeakers that can be looped
from the AC Loop Output connector is determined by the
voltage of the power source, the current draw of the looped
loudspeakers, the circuit breaker rating, and the rating of the
AC power cable connected to the first UPQ-D Series
loudspeaker (Table 1).
NOTE: Current draw for a UPQ-D Series
loudspeaker is dynamic and fluctuates as
operating levels change. The indicated number of
loudspeakers that can be looped assumes that
operating levels are normal and not such that
loudspeakers are constantly limiting.
UPQ-D Series loudspeakers ship with a gray powerCON 20
cable mount connector, rated at 20 A, for assembling AC
looping cables. Assembled 1-meter AC looping cables
(PN 28.115.032.03) are also available from Meyer Sound.
Figure 5: 230 V AC, 3-Phase Wye System (Single Line to Loudspeakers)
Figure 6: AC Input (Left) and AC Loop Output (Right) Connectors
Neutral
Earth/Ground
Line 1 (230 V AC)
Line 3 (230 V AC)
Line 2 (230 V AC)
Loudspeaker
(230 V AC)
Loudspeaker
(230 V AC)
Loudspeaker
(230 V AC)
!
Table 1: Maximum UPQ-D1/2/3 that Can Be Looped with AC Power
Circuit Breaker/
Connector Rating 115 V AC 230 V AC 100 V AC
15 A
6 looped
(7 total)
13 looped
(14 total)
5 looped
(6 total)
20 A
9 looped
(10 total) 18 looped
(19 total)
8 looped
(9 total)
!