Figure 2-5. AC Power Panel
CONTROL/
INDICATOR FUNCTION
Relay K1 Relay K1 is used to
applyACtothehigh
voltage transformer
through current limiting
resistor(s) during the
step start sequence.
Relay K2 Relay K2 is used to
apply AC mains directly
to the high voltage
transformer.
Terminal Board
TB1
Provides connections
for AC input power.
Step Start Re-
sistors A19R3,
A19R2, &
A19R1
(Only one resistor is
used in the single phase
transmitter.) The step
start resistors limit the
power supply surge
currentoninitialturnon.
Phase Monitor Detects loss of phase on
primary AC input power
and has capability to
detect low primary AC
input voltage (3 phase
GATES FIVE only).
FAN Circuit
Breakers
A20CB2 &
A20CB3
Protect wiring to fans
from over current
condition.
LampA20DS1 DS1 will illuminate
whenpoweris appliedto
thelowvoltagecircuitry.
Circuit Breaker,
CB1
10 Amp circuit breaker
to protect the low
voltage power supply
from an over current
condition.
Lamp A19DS1 A19DS1 will illuminate
when power is applied
from the Main
Disconnect Switch (i.e.
cabinet is receiving AC
power).
Table 2-6. AC Power Panel
Controls and Indicators
Rev. AC: 2/29/00 888-2314-001 2-9
WARNING: Disconnect primary power prior to servicing.
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