MGVCL Exam Paper (30-07-2021 Shift 3)
Medium voltage covered conductors (MVCC) are produced in voltage rating

beyond 200 kV
between 132 kV to 200 kV
between 6.6 kV to 33 kV
less than 3.3 kV

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MGVCL Exam Paper (30-07-2021 Shift 3)
The DC offset in fault current causes conventional over-current (OC) relays to :

sometimes under-reach and sometimes over-reach
under-reach
over-reach
reach remains unaffected due to DC offset

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