METHOD FOR TESTING CABLE CORE FOR SUPERCONDUCTING CABLE, AND COOLING CONTAINER

摘要

Provided are a test method for testing a cable core for a superconducting cable and a cryostat used for the test method, whereby electrical characteristics can be tested over the entire length of a cable core of a superconducting cable. A cable core (100) provided with a superconducting conductor layer (102) is accommodated in a cryostat (1) having a vacuum insulation layer (2a) on at least a portion thereof. The cryostat (1) is filled with a liquid coolant (2L). A cooling gas is introduced into a gas phase (2A) in the cryostat (1), the gas phase (2A) is placed in a pressurized state at a pressure greater than atmospheric pressure, the superconducting conductor layer (102) is electrified or charged while the superconducting conductor layer (102) is maintained in a superconducting state by the liquid coolant (2L), and electrical characteristics over the entire length of the cable core (100) are measured. During this measurement, the pressure of the gas phase (2A) in the cryostat (1) and the temperature of the liquid coolant (2L) are measured without circulative cooling of the liquid coolant (2L) in the cryostat (1), and the liquid coolant (2L) is monitored on the basis of the measurement results as to whether the state thereof is suitable for continuation of testing.