Final answer:
The typical megohmmeter test voltage for a 600V system is usually 1,000V or above, but this can vary based on specific standards and practices, so consulting relevant guidelines is essential.
Step-by-step explanation:
The typical applied megohmmeter voltage in a 600V class system is not explicitly provided in the reference information. Megohmmeters, which are instruments used to measure electrical resistance, are often used to perform insulation resistance tests on various electrical apparatus and insulation materials. When testing a 600V class system, an industry standard often applied is a voltage that is generally 1,000V or above, which may be used to stress the insulation sufficiently without causing damage. However, the exact voltage applied can depend on specific standards or practices, and it is essential to consult relevant electrical guidelines, equipment specifications, and safety regulations before conducting any tests.