Electrical response of a NiTi shape memory alloy used as an actuator in a 25 kV recloser

Conference · Wed Nov 01 04:00:00 EST 1995

OSTI ID:122789

Lours, T ^[1]; Daigneault, G ^[2]

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1. Imago Canada, Dorval, Quebec (Canada)
2. Hydro-Quebec, Varennes, Quebec (Canada). Appareillage Electrique

Shape-memory alloys (SMAs) have already been proposed as active components of low-voltage interrupting systems, i.e. the part through which the current off the line to be protected would pass. When a fault (overcurrent) occurs, the change of shape of the SMA element actuates the interrupting mechanism. In this work, the feasibility of using a NiTi SMA part to actuate the vacuum interrupting chamber of a 600A-25KV recloser is studied. After a detailed analysis of the specifications of the installation, the behavior under current of a suitable NiTi element is evaluated.

• OSTI ID: 122789
• Report Number(s): CONF-950521--; ISBN 1-56676-313-4
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
36 MATERIALS SCIENCE
ACTUATORS
CIRCUIT BREAKERS
ELECTRICAL PROPERTIES
ELECTRONIC CIRCUITS
EQUIPMENT PROTECTION DEVICES
MATERIALS
NICKEL ALLOYS
PERFORMANCE TESTING
POWER DISTRIBUTION SYSTEMS
SHAPE MEMORY EFFECT
SPECIFICATIONS
SWITCHES
THERMODYNAMIC PROPERTIES
TITANIUM ALLOYS