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Telemark TT-6 Power Supply
to the base of the transformer. Make sure connections at both ends are to clean
bare metal. This insures that the transformer core does not rise above ground
potential during operation.
Approximately 15 feet (3.81 meters) of high voltage coaxial cable is provided for
connection of the power supply output to the source transformer. One end of this
cable is permanently terminated within the power supply cabinet. The free end
passes through the rear panel and goes to source filament transformer.
Approximately 5 inches (.127mm) of outer covering and shield should be
removed so that the insulated center conductor is exposed. This should be
connected to the center tap. The shield should be connected to the tank ground
at the transformer. The same care should be taken in making these connections
as that taken in connecting earth ground to the tank and transformer.
Cabinet to Control Module - J101
See Figure 1-A, 3-C, 3-0, and 4-A
There is a 25-pin D type connector located on the front panel of the HV module; it
is the same as the J101 located on the back panel. The 25 wires carry many
signals both for commands and feedback information in analog form. This cable
connects the power supply to the Control Module. The Control Module is
available in handheld or rack mounted.
Interlock Connections - J102
The external interlocks are connected to the power supply through J102, which is
located on the rear of the cabinet. See Figure 3-0, Control Module Connections
for details. 22 AWG (0.34mm2) ribbon cable or round cable should be used for
the interlock installation that is described below.
WARNING -ALL STATEMENTS REGARDING OPERATOR AND
EQUIPMENT SAFETY ARE VOID IF THE EXTERNAL
INTERLOCKS ARE NOT INSTALLED AS REQUIRED.
•
WATER
-
Source Water Interlock
Install a water flow switch in the return line of the cooling system for the electron
beam source. This switch should close when there is sufficient water flow to cool
the source and associated shields. Connect the switch to pins 1 and 9 of J102.
•
DOOR
-
Tank High Voltage Access
These interlocks are to be connected to pins 2 and 10 of J102. Install series
connected, normally open switches on the doors and high voltage panels so that
they are closed only when the doors of the chamber and all panels are in place.
This interlock should be closed only when there is no possible chance of coming
into contact with high voltage.
•
VACUUM
-
High Vacuum Interlock
3-4 INSTALLATION