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Hello! I've reviewed the user manual for the A.W. SPERRY Insulation resistance tester 3315. This document covers the device's four-range insulation testing, auto-discharge feature, AC voltage measurement capabilities, and safety precautions. I am ready to help you with any questions about the device.
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What is the maximum voltage for AC/DC measurement?
What does the auto-discharge function do?
What should I do before any insulation testing?