Quench development analysis in HTSC coils by use of the universal scaling theory

The theory, describing thermal quench in HTSC devices, mas recently developed, It permits to evaluate thermal quench conditions and development dependent on materials' parameters and cooling. Thermal quench threshold current and time characteristics of the quench can be predicted. The theor!; has been extensively: verified by experiments with different superconducting BTSC devices. Good correspondence between theory and experiments has been observed, In the present paper we use this theory to analyze the thermal quench emergence conditions that are dependent on cooling, sizes of the device, material properties, etc, It it:as shown, that with increase of the size of the device threshold thermal quench current may become less than standard determined critical current. Time characteristics of the thermal quench increase with sizes. The analysis is supported by comparison with experiments with different HTSC coils.