Installation; Fig. 11 Sct0Xxx Connections - Beckhoff SCT Series Documentation

3.1.3

Installation

Open transformer circuits lead to electric shock and arc flashover!
Disregarding this will result in death, physical injury or considerable damage to property!
• Never open the secondary circuit of the current transformer under load.
• Short-circuit the secondary current terminals of the current transformer before removing the device.
Hazardous voltage can lead to electric shock and burns!
• Make sure that the details on the name plate and in the "Technical data" correspond to the operating pa-
rameters of the system.
• Switch the system off before commencing with the installation!
Induction of high voltages into the secondary circuit!
• If the secondary circuit of the current transformer is not under load (open), high voltages are induced on
its secondary terminals. The voltage values occurring there represent a danger to persons and the func-
tional safety of the current transformer.
• "Open operation", i.e. operation of the current transformer without secondary wiring, must be avoided at
all costs.
• Make sure that the working environment is safe during assembly, maintenance and installation work.
Interrupt the power supply of the primary conductor and secure against being switched on again
inadvertently.
• To connect the primary conductor, pull the engaged red connection cover plates upwards by the
serrated surface.
Then feed the primary conductor (primary connection cross-section: max. 4 mm² with ferrule, 6 mm²
solid, max. 8 mm² with cable lug) through the connection aperture of the current transformer housing.
The connection apertures of the primary conductor are marked with the capital letters "K" and "L".
Fig. 11: SCT0xxx connections
• Connect the primary side conductor to the screw terminals "K" (input) and "L" (output) as shown in Fig.
SCT0xxx connections.
• Now lead the secondary conductor through the connection aperture of the current transformer housing.
The connection apertures of the secondary conductor are marked with the small letters "k" and "l".
• The secondary conductor must be connected to the screw terminals "k" (input) and "l" (output).
SCTxxxx
Technical data, functional description, installation
DANGER
WARNING
WARNING
Version: 1.1 21