Manual de Instalação e Operação
TN
Alimentação 90 270 V AC = Feeding 90 to 270 V ac
4.2. INPUTS CONNECTION SCHEME
When connecting PT’s and or CT’s remind that the primary will be connected to the
electric net and the secondary will be connected to the equipment respective inputs. All the
measurements for voltages above 500Vca and current above 5A necessarily need the use
of PT´s and CT´s.
Following it is described the connections that should be done in the sensoring inputs
(voltage and current) for one phase one element measurements or three phase, two and
three elements.
TN
CORRENTE 0-5 A = CURRENT 0 – 5 A, BORNES = TERMINALS, TERRA = EARTH,
REDE = NET.
4.2.1. CURRENT SENSOR
Make sure that the CT's polarity is not inverted and its common is not connected for other
application. Also it is compulsory the connection in the correct order of the phase R (V1),
phase S (V2) and phase T (V3). Connect CT’s to terminals as the side illustration.
Connection to three CT's:
SMART CAP 485 39
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