Installation - Beckhoff SCT Series Documentation

3.4.3

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 conductors and secure against being switched on again
inadvertently.
• Install the current transformer on the primary conductors.
• To do this, feed the primary conductors (copper bar or round conductor) through the window apertures
of the current transformer housing.
The window apertures are marked with "K-P1" and "L-P2" as well as with L1, L2, L3 (for the individual
phases).
• The devices of the types SCT3215 and SCT3315 can be fastened directly to the primary conductors or
alternatively to a mounting plate.
Use the fastening materials included in the scope of delivery for this.
• Direct fastening to the primary conductors is done by screwing the fastening screws included in the
accessories pack into the screw bosses on the transformer housing.
• Mounting on a mounting plate takes place with the base fastening brackets also included in the
accessories pack.
• The SCT31xx types are intended for snap-on fastening to 35 mm DIN rails.
• Make the secondary connections.
Observe the markings on the secondary terminals.
SCTxxxx
Technical data, functional description, installation
DANGER
WARNING
WARNING
Version: 1.1 47