Commissioning

DANGER

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.

WARNING

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 parameters of the system.
Switch the system off before commencing with the installation!

WARNING

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 functional 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".

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).
After connecting the primary and secondary conductors, engage the red connection cover plates again with an audible “click”.

Measuring circuit

Use the fastening plates provided to fasten the device to a mounting plate. These can be fastened to the mounting plate with two screws, max. Ø 5 mm.
Fastening to a 35 mm DIN rail takes place with the help of the optionally available snap-on mounting ZB8201-0010.
Check whether the current transformer is mounted correctly and the secondary conductors are connected correctly.
Switch on the power supply to the primary conductor again.
Optionally, the connections can be secured with the sealing plate ZB8202-0010, which is available as an accessory.