C
HEETAH
864XR
V
IDEO
M
ATRIX
S
WITCHER
Publication 81-9059-0595-0, Rev. C
October 2010
Proprietary Information of
PESA
3-6
AC Power IN
3 Phase; 120 degrees apart
MAX 250VAC between any two phases
A
B
C
A
B
250VAC
MAX
A
C
250VAC
MAX
B
C
250VAC
MAX
Figure 3-3 - Phase Relationships
Additionally, systems with one AC power input supplied from a normal, “in-house” AC line
and the other AC power input supplied from an external generator must insure that, regardless
of the voltage-phase relationship between the external generator and the “in house” AC line,
the maximum applied voltage between the two AC power inputs does not exceed 250VAC.
If your application requires two independent phases, which exceed the
250VAC maximum, PESA has an interface solution to address your needs.
Please contact your PESA dealer or Area Sales Manager.
Additionally, it is NOT recommended to use single-phase GFCI circuit
protection devices in the supply circuitry of any Cheetah series systems.
Due to unbalanced currents in the neutral circuitry, single-phase GFCI
devices will typically trip. However (if employed), a three-phase GFCI
breaker will not trip except under fault conditions.
3.6.1
864XR
F
RAME
P
RIMARY
P
OWER
Make sure that all power is disconnected and the chassis breakers are in the
OFF position before completing the specific power connections.
To prevent damage to the equipment:
•
Read all instructions for proper input voltage ranges.
•
Use only a power circuit with the specified current capacity.
•
Follow static prevention precautions prior to handling equipment.
