Manual de Instalação e Operação
When the Smart Cap 485 is programmed for measurement with two (2) CT's it is not
necessary the CT connection regarding the phase V2 (I2). However in this setup of two CT's
the current of phase V2 will be calculated and not measured, considering that the net is
balanced.
4.2.2. VOLTAGE SENSOR
Make sure that PT's polarity is not inverted. It is also compulsory the connection in the
correct order of the phase V1, phase V2 and phase V3. Connect the PT’s to terminals as the
necessary connection, choosing one of the following diagrams.
4.2.2.1. PHASE – NEUTRAL VOLTAGE SENSOR WITHOUT PT
TN:
TENSÃO 50-500VAC = (Voltage 50-500Vac)
Bornes = Terminals
Rede = Net
Fase – Neutro S/TP. Ligação estrela = Phase-Neutral w/PT. Star connection
4.2.2.2. PHASE – NEUTRAL VOLTAGE SENSOR WITH PT
SMART CAP 485 40
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