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• All of the terminals should be checked to verify proper
connections.
• The polarities and phasing of all instrument transform-
ers should be checked.
• Before initial energization with supply voltage, the de-
vice shall be situated in the operating area for at least
two hours to ensure temperature equalization and to
avoid humidity and condensation problems.
Notes for measurings
• For measurements in three-phase networks without
neutral in V-connection and a nominal voltage of
U
LL
= 690 V, the voltage must be transformed to
U
LL
≤ 400 V. The measuring range to be parameterized
is then also U
LL
= 690 V.
• In IT networks, the SIMEAS P cannot be connected
directly because the voltage is measured against the PE
conductor connection and the input impedance of the
device causes a leakage current against earth. The leak-
age current can cause tripping of the leakage protective
system in IT networks. Please make sure that the
maximum permissible input voltage of the SIMEAS P
against earth U
L-PE
= 480 V is not exceeded (e.g., due to
an earth fault of one phase). Voltage transformers must
be used in IT networks.
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