● Measurement of earth-electrode resistances;
● Continuity of all equipotential earth-and safety bonding conductors;
● Inspection and functional testing of all MV components;
● Insulation checks of MV equipment;
● Dielectric strength test of transformer oil;
● Inspection and testing of the LV installation;
● Checks on all interlocks (mechanical key and electrical) and on all automatic sequences;
● Checks on correct protective-relay operation and settings;
● Personnel of the power-supply authority will energize
the MV equipment and check for correct operation of the metering;
● The installation contractor is responsible for testing and connection of the LV installation. When finally the substation is operational, the power-supply authority has operational control over all MV switchgear in the substation;
● The power-supply personnel have unrestricted access to the MV equipment.