The TD2, from Rigon Instruments, is a tangent delta module that has been designed to calculate the Td value on enamelled wire according to the requirements laid down in IEC 60851 and NEMA MW 1000.The main features of this instrument include the ability to perform three different tests: a rising temperature measurement with aqueous graphite solution, a falling temperature measurement with a low melting alloy, and a single-point test.
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