UFC 3-535-01
17 November 2005
Figure 7-7. Block Diagram Without Tower
POWER PANEL -
SERVICE TO
CIRCUIT BREAKERS AS REQUIRED
BUILDING
TO LANDING
DIRECTION LIGHTS
DIMMER
TO PERIMETER LIGHTS
LANDING DIRECTION LIGHTS
RELAY CABINET
DIMMER
TO APPROACH
DIRECTION LIGHTS
CONTROL PANEL
TO APPROACH
DIMMER
PATH INDICATOR
TO FLOODLIGHTS
DIMMER
NOTE:
Delete unneeded components when not
used in the helipad lighting system.
7-11
CONTROL REQUIREMENTS
7-11.1
Perimeter Lights
Provide on and off control and a three-step intensity control.
7-11.2
Landing Direction Lights
Provide on and off control and a three-step intensity control. Interconnect the controls
with the perimeter light controls in order to prevent operation without the perimeter lights
being activated; however, they must have the capability of being independently turned
off.
7-11.3
Approach Direction Lights
Provide on and off control and a three-step intensity control. Interconnect the controls to
the landing direction light circuit in order to prevent their operation unless the landing
direction lights are activated; however, they must also be capable of being turned off
independently. The intensity controls may be connected to the same regulator as the
landing direction lights.
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