Maintenance, inspection and troubleshooting

DANGER

Dangerous electrical voltage leads to electric shock and arc flashover!

Non-compliance will result in death, personal injury or considerable material damage!
Ensure a safe working environment during assembly, maintenance and installation work

Before beginning any assembly, maintenance, or installation work, disconnect the system from the power supply!
Interrupt the power supply of the primary conductor and secure against being switched on again inadvertently.
Make sure that the details on the nameplate and in the “Technical data” correspond to the operating parameters of the system.

Maintenance and inspection

Check whether the secondary conductors are firmly connected to the measuring device.
Check whether the current transformer is closed correctly.
Remove coarse dirt from the housing of the current transformer.
Contact with moisture, in particular with the core, must be avoided at all costs.

Troubleshooting

In the case of errors, e.g. unexpected or incorrect values, inverse power:

Check the settings of the measuring device on the basis of its operating instructions.
Check whether the current transformer is mounted on the intended conductor in the direction of the energy flow.
Check the connection of the current transformers and the corresponding voltage tap-off if the active and/or reactive power does not correspond to the expected values; if necessary, one phase has been reversed.
Check whether the current transformer is connected correctly.
Check the power requirement of the conductors and measuring devices connected to the current transformer. It must not exceed the rated power of the current transformer (see name plate).
If the above points do not solve the problem:
Check whether there is dust or other dirt between the two parts of the core. If so, clean the surfaces carefully with a lint-free cloth.
Avoid hand contact (sweat)!