TY - GEN
T1 - EXPERIMENTAL MECHANICAL SWITCH FOR 3 kA DRIVEN BY SUPERCONDUCTING COILS.
AU - ten Kate, Herman H J
AU - ten Haken, Bennie
AU - van de Klundert, Louis J M
PY - 1986/12/1
Y1 - 1986/12/1
N2 - Usually mechanical switches that are built for use in superconducting circuits are driven in some way by a rod which is controlled at room temperature. In this paper, an alternative method to drive the electrodes of the switch is reported. In fact the new device is a superconducting relay that uses an antiseries connection of two superconducting air-core coils. The repulsing force of these relay coils enables the switch to be closed by applying a pressure to the electrodes. The off-state is effected by a set of springs which interrupt the electrodes when the coil current is switched off. We realized that this electro-magnetic method of producing large forces could be promising for driving a mechanical switch. The desired method was demonstrated by an experimental model. A switch-on resistance of 8 multiplied by 10** minus **8 OMEGA with a switch current of 3 kA and a contact force of 20 kN was measured.
AB - Usually mechanical switches that are built for use in superconducting circuits are driven in some way by a rod which is controlled at room temperature. In this paper, an alternative method to drive the electrodes of the switch is reported. In fact the new device is a superconducting relay that uses an antiseries connection of two superconducting air-core coils. The repulsing force of these relay coils enables the switch to be closed by applying a pressure to the electrodes. The off-state is effected by a set of springs which interrupt the electrodes when the coil current is switched off. We realized that this electro-magnetic method of producing large forces could be promising for driving a mechanical switch. The desired method was demonstrated by an experimental model. A switch-on resistance of 8 multiplied by 10** minus **8 OMEGA with a switch current of 3 kA and a contact force of 20 kN was measured.
UR - http://www.scopus.com/inward/record.url?scp=0023012408&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0023012408
SN - 0306422913
T3 - Advances in Cryogenic Engineering
SP - 243
EP - 249
BT - Advances in Cryogenic Engineering
PB - Plenum
ER -