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What are the direct connection voltage limits for EM64xxH series meter ?

The meter's voltage measurement inputs are rated by the manufacturer for up to
277 V L-N / 480 V L-L. However, the maximum voltage allowed for direct
connection may be lower, depending on the local electrical codes and regulations.
As per installation category III the maximum voltage on the meter voltage
measurement inputs should not exceed 277 V L-N / 480 V L-L.
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