The SIPROTEC 6MD86 bay controller is a general-purpose control and automation device with protection function. It is designed
for use in all voltage levels from distribution to transmission. As part of the SIPROTEC 5 family, it enables a wealth of protection
functions from the SIPROTEC library. The modular hardware permits integration of the I/Os depending on the application.
Adapt the hardware precisely to your requirements and rely on the future-oriented solutions for protection, control, automation,
monitoring, and Power Quality – Basic.

Main function Bay controller for medium and high to extrahigh
voltage switchgear with integrated operation
and comprehensive protection functions;
performance automation, simple configuration
with DIGSI 5

Inputs and outputs:

7 predefined standard variants with 8 current transformers,
8 voltage transformers,
11 to 75 binary inputs,
9 to 41 binary Outputs

Hardware flexibility:

Flexibly adjustable and expandable I/O quantity structure within the scope of the SIPROTEC 5 modular system. For great requirements placed on the quantity structure, the device can be extended in the second row. For example, this permits an additional 240 binary inputs (and more) to be used with the IO230 (see chapter "Hardware")

Housing width:

1/3 × 19" to 2/1 × 19"

Integrated bay controller with versatile protection function from medium to extra-high voltage

Control of switching devices

Point-on-wave switching

Synchrocheck, switchgear interlocking protection and switchrelated protection functions, such as circuit-breaker failure protection and automatic reclosing

Integrated electrical Ethernet RJ45 for DIGSI 5 and IEC 61850 (reporting and GOOSE)

Up to 4 pluggable communication modules, usable for different and redundant protocols (IEC 61850-8-1, IEC 61850-9-2 Client, IEC 60870-5-103, IEC 60870-5-104, Modbus TCP, DNP3 serial and TCP, PROFINET IO, PROFINET IO S2 redundancy)

Virtual network sharing (IEEE 802.1Q - VLAN)

Redundancy protocols PRP and HSR

Extensive cybersecurity functionality, such as role-based access control (RBAC), protocolling security-related events, signed firmware or authenticated network access IEEE 802.1X

Simple, quick and secure access to the device data via a standard Web browser to display all information and diagnostic data, as well as vector diagrams, single-line and device display pages

Arc protection

Graphical logic editor to create powerful automation functions in the device

Optional overcurrent protection with 3-pole tripping

Also used in switchgear with breaker-and-a-half configuration

Overcurrent protection also configurable as emergency function

Secure serial protection data communication, also over great distances and all available physical media (fiber-optic cable, 2-wire connections and communication Networks)

PQ-Basic: voltage unbalance; voltage changes: overvoltage, dip, interruption; TDD, THD and Harmonics

Capturing operational measured variables and protec-tion function measured values to evaluate the plant state, to support commissioning, and to analyze faults

Phasor Measurement Unit (PMU) synchrophasor measured values and IEEE C37.118 protocol integrated

Powerful fault recording (buffer for a max. record time of 80 s at 8 kHz or 320 s at 2 kHz)

Point-on-Wave Switching (PoW)

Auxiliary functions for simple tests and commissioning

Flexibly adjustable I/O quantity structure within the scope of the SIPROTEC 5 modular system

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