Installation; Fig. 16 Measuring Circuit - Sct0Xxx/Sct1Xxx/Sct2Xxx Transformer - Beckhoff SCT Series Documentation

3.2.3

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.
• Interrupt the power supply of the primary conductor and secure against being switched on again
inadvertently.
• Install the current transformer on the primary conductor.
• To do this, feed the primary conductor (round conductor) through the window aperture of the current
transformer housing. The window aperture is marked with "P1" and "P2".
• Make the secondary connections.
• Observe the markings "S1" and "S2" of the secondary terminals
Measuring circuit
Fig. 16: Measuring circuit - SCT0xxx/SCT1xxx/SCT2xxx transformer
SCTxxxx
Technical data, functional description, installation
DANGER
WARNING
WARNING
Version: 1.1 27