Maintenance, inspection and troubleshooting
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Dangerous electrical voltage leads to electric shock and arc flashover! Non-compliance will result in death, personal injury or considerable material damage!
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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)!