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C
HEETAH
S
ERIES
S
WITCHERS
–
C
HAPTER
9
81-9059-0570-0
Rev. C
Proprietary Information of
PESA
S
WITCHING
S
YSTEMS
,
I
NC
.
122
9.3
C
HEETAH
C
HASSIS
S
UPPLY
P
OWER
C
ONNECTIONS
All Cheetah frames have two AC (or DC) Mains power inputs. As depicted in Figure 50, each AC
power input is rectified, then diode OR’d with the other rectified power inputs to the filter assembly.
CHEETAH
FILTER
ASSEMBLY
AC - 2
BREAKER
+ VDC
Filter
+
-
AC 1
AC 2
AC - 1
BREAKER
FIGURE 50: Power Supplies Configuration
WARNING:
The maximum applied voltage to either of the AC power
inputs must not exceed 250VAC. In addition, the maximum applied voltage
across both AC power inputs must not exceed 250VAC at any time.
Whenever two phases of a three-phase power source is applied using
different phases on each power input, the voltage between the phases must
not exceed 250VAC. Failure to heed this warning will result in serious
equipment damage.
A
B
C
D
Perform these measurements using an
AC Voltmeter. ALL measurements
must be less than, or equal to, 250VAC.
M
O
V
M
O
V
Содержание Cheetah 1024x256
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