Power measurement in a single-phase mains network
- The voltage is measured via connections L1, L2, L3 and N.
- The current is measured via three current transformers (e.g. the SCT series from Beckhoff) and the connections IL1, IL2, IL3 and IN (star point of the current transformers).
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WARNING: Risk of electric shock! Bring the Bus Terminal system into a safe, voltage-free state before starting mounting, disassembly or wiring of the Bus Terminals! |
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Attention! Risk of device damage! Avoid confusing the current and voltage circuit during connection, since the direct connection of mains voltage to the terminal points for the current transformers (typical input resistance 220 mΩ) would destroy the power measurement terminal! |
