BT decoupling protections

Type B.1

(ex type 2.1)

Type B.2

(ex type 2.2)

Automatic disconnector DIN VDE 0126

Detection of HTA single-phase faults

Not done

Note done

Note done

Detection of BT polyphase faults

Minimum instantaneous V 85% Vn

Minimum instantaneous V 85% V_n

Minimum instantaneous V 80% V_n

Separate grid operation

Minimum instantaneous V 85% V_n

Minimum instantaneous V 85% V_n

Minimum instantaneous V 80% V_n

Maximum instantaneous V 115% V_n

Maximum instantaneous V 115% V_n

Maximum instantaneous V 115% V_n

Minimum of f instantaneous 49.5 HZ

Minimum of f instantaneous 49.8 HZ

Maximum instantaneous f 50.5 HZ

Maximum instantaneous f 50.2 HZ