The 6MD63 bay control unit is a flexible, easy-to-use control unit. It is optimally tailored for medium-voltage applications but can also be used in high-voltage substations. The 6MD63 bay control unit has the same design (look and feel) as the other protection and combined units of the SIPROTEC 4 relay series. Configuration is also performed in a standardized way with the easy-to-use DIGSI 4 configuration tool.

For operation, a large graphic display with a keyboard is available. The important operating actions are performed in a simple and intuitive way, e.g. alarm list display or switchgear control. The operator panel can be mounted separately from the relay, if required. Thus, flexibility with regard to the mounting position of the unit is ensured.

Integrated key-operated switches control the switching authority and authorization for switching without interlocking.

The 6MD66 high-voltage bay control unit is the control unit for high voltage from the SIPROTEC 4 relay series. Beacause of its integrated functions, it is an optimum, low-cost solution for high-voltage switchbays. The 6MD66 high-voltage bay control unit also has the same design (look and feel) as the other protection and combined units of the SIPROTEC 4 relay series. Configuration is performed in a standardized way with the easy-to-use DIGSI 4 configuration tool .

2 versions available:

• 6MD663 with 50 indications, 35 commands, 3 x I, 4 x V, 2 x 20mA transducer input
  
• 6MD664 with 65 indications, 45 commands, 3 x I, 4 x V, 2 x 20mA transducer input.
  

For operation, a large graphic display with a keyboard is available. The important operating actions are performed in a simple and intuitive way, e.g. alarm list or switchgear control. The operator panel can be mounted separately from the unit, if required. Thus, flexibility with regard to the mounting position of the unit is ensured. Integrated key switches control the switching authority and authorization for switching without interlocking.

Bay processing unit with process bus (Ethernet) to the SICAM HV components, based on the SIPROTEC4 devices. Switchgear interlocking and automatic sequences (with CFC). Inter-bay-communication for the exchange of information with other SIPROTEC4-devices also without substation controller. Comfortable controlling of the switchgear via keyboard and graphic display. Control figure in the display can consist of several pages. Communication to the substation controller (SICAM SC) with Profibus FMS optically or electrically. Engineering is done with DIGSI 4 engineering tool.