TF FLAG JOINT HIGH CURRENT TEST FIXTURE

1
TF FLAG JOINT HIGH CURRENT TEST FIXTURE
INSTALLATION TO BE IN THE NSTX TRANSITION
AREA Features Assembled Components Flag and
Mating Section of TF Center Stack Bus The
Fixture Will Test the Joint to Currents up to
Rated 72 kA Apply Repetitive Test Currents to
Simulate NSTX Operations Provide Capability to
Apply Mechanical Forces to the Flag
While Carrying Current Monitor Flag Thermal
and Current Distribution and Compare with the
Results of Computer Analysis Data Utilize
Existing NSTX TF Power Supplies, Controls and
Protection Allow for Fixture Modifications if
Needed
2
TF FLAG JOINT HIGH CURRENT TEST FIXTURE
3
TF FLAG FIXTURE INSTRUMENTATION AND PROTECTION

• DATA ACQUISTITION DEVICES
• Hall Sensors Distributed Across Flag Joint
  Connection
• Thermocouples For Flag Temperature Distribution
• Load Cell and Jacking Assemblies(2) for
  Pre-Loading the Flag
• Remote Video and Audio Monitoring of Assembly
  during Testing
• PROTECTION DEVICES
• Voltage Sensing across Tested Connection for
  Circuit Protection
• Diode(Parallel/Series) Circuit Across Fixture to
  Shunt Current
• Rogowski Coil Current Detection In Diode Leg
• CIC Computer Software and Hardware Protection to
  be Implemented Per Test Levels

4
TF FIXTURE CONCEPTUAL DESIGN SKETCH
5
PHOTOGRAPH OF NSTX TERMINATION STRUCTURE AREA
6
PHOTOGRAPH OF NSTX TERM. STRUCTURE BUS TAKE-OFF
POINTS
7
FLAG TEST FIXTURE ELECTRICAL CONECTION IN NSTX
SYSTEM