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 WhileCarrying Current

•Monitor Flag Thermal and Current Distribution andCompare with the Results of Computer Analysis Data

•Utilize Existing NSTX TF Power Supplies, Controls and Protection

•Allow for Fixture Modifications if Needed

TF FLAG JOINT HIGH CURRENT TEST FIXTURE

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

TF FIXTURE CONCEPTUAL DESIGN SKETCHSketch: TF Joint ElectricalTest Fixture2 ft. (est.)4 ft. (est.)

0.35'0.35'0.35'

Load CellsG10/(similar) floor≈7380 #FFrame StructureInput/Output BusDiode OC Prot.Vertical TF Flag, TF Conductor,“L” and Flex lead assy. from

NSTX removed/spareparts set.

Sketch: TF Joint ElectricalTest FixtureLocation of FlagFlux / Thermal

Sensors

PHOTOGRAPH OF NSTX TERMINATION STRUCTURE AREA

PHOTOGRAPH OF NSTX TERM. STRUCTURE BUS TAKE-OFF POINTS

FLAG TEST FIXTURE ELECTRICAL CONECTION IN NSTX SYSTEM