Hello.
We have installed AL armored cable 18/36 kV. All is running fine until recently (3 months operation), the armor of the cables overheated melting the outer insulation and even the XLPE causing a ground fault trip.
What can cause this armor to overheat? We are grounded on both ends of the installation.
Thanks in advance.
We have installed AL armored cable 18/36 kV. All is running fine until recently (3 months operation), the armor of the cables overheated melting the outer insulation and even the XLPE causing a ground fault trip.
What can cause this armor to overheat? We are grounded on both ends of the installation.
Thanks in advance.