Siemens Siprotec 4 SIPROTEC 6MD66 Bay Controller – 3xI 4xV, for transmission grids
The Siemens SIPROTEC 6MD66 Bay Controller is a high-performance solution designed for transmission grid control and substation automation. Equipped with 3xI and 4xV inputs, it ensures precise monitoring, high-voltage protection, and reliable switchgear management. Ideal for industrial power systems and utility substations, it features operator-friendly graphical displays, interlocking, and automation via CFC.
Technical Specifications
Integrated synchro-check for synchronized breaker closing
Breaker-related protection functions (Breaker Failure 50BF, Auto-reclosure 79)
Flexible, powerful measured-value processing
High-voltage signal handling
Operation of up to 14 single-pole circuit-breakers
Operation of up to 11 two-pole switching devices
Up to 65 indication inputs, up to 45 command relays
Switchgear interlocking
Suitable for redundant master station
Operational measurement display: V, I, P, Q, S, f, cos φ (single & three-phase)
4 freely assignable function keys for frequent operator actions
Communication Interfaces:
IEC 61850 Ethernet
IEC 60870-5-103
PROFIBUS-FMS / DP
DIGSI 4 service & front interface
Time synchronization via IRIGB / DCF77
Breaker-related protection functions (Breaker Failure 50BF, Auto-reclosure 79)
Flexible, powerful measured-value processing
High-voltage signal handling
Operation of up to 14 single-pole circuit-breakers
Operation of up to 11 two-pole switching devices
Up to 65 indication inputs, up to 45 command relays
Switchgear interlocking
Suitable for redundant master station
Operational measurement display: V, I, P, Q, S, f, cos φ (single & three-phase)
4 freely assignable function keys for frequent operator actions
Communication Interfaces:
IEC 61850 Ethernet
IEC 60870-5-103
PROFIBUS-FMS / DP
DIGSI 4 service & front interface
Time synchronization via IRIGB / DCF77
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