西门子6ES7400-2JA00-0AA0

Merging Unit - SIPROTEC 6MU805 and SIPROTEC 6MU85

The Merging Unit is the interoperable interface between primary and secondary equipment for process bus solutions conforming to IEC 61869 and IEC 61850-9-2. Measured values of conventional and non-conventional transformers are converted into standardized, Ethernet-based telegrams (SMV).

Merging Unit SIPROTEC 6MU805

For conventional instrument transformers

This device allows conversion of current substations to process bus substations without change in the primary equipment. The advantages of process bus can be used, but also a mixed configuration of process bus / non-process bus is possible.

Product homepage - downloads from the internet (catalogs, certificates, firmware, manuals,...)

www./6MU805

Minimize wiring by measuring directly at the sensors, operating at a central position and use of fiber optical Ethernet

Enhanced safety by avoiding open wire condition at relays

Easier extension / maintenance, adding a device only connection to the network necessary. No direct connection to the sensors required

Maximum network reliability, through seamless redundancy protocols

Interoperability ensured, standardized in IEC 61850-9-2

Merging Units for conventional CT/VT offer process bus advantages without change in primary Equipment

The SIPROTEC 6MU80 merging units are not only certified according IEC 61850-9-2LE for process bus applications but include a lot of additional features. Some, but not all, of the additional features are:

Extended temperature range (-40 ºC – 70 °C)

Configurable 12 binary inputs / 8 binary outputs

Time synchronization via PPS, IRIG-B or GPS

Full support IEC 61850-8-1 GOOSE

PRP and HSR (IEC 62439)

Integrated Web-Server

Comprehensive engineering with DIGSI

Full integration of whole substations in process bus technology by keeping well known engineering concepts of SIPROTEC.

Merging Unit SIPROTEC 6MU85

For conventional and non-conventional instrument transformers (LPITs)

The new SIPROTEC 6MU85 merging unit bases on the flexible SIPROTEC 5 system has been designed for conventional and non-conventional instrument transformers (LPITs) and digitalizes all primary data close to the process. SIPROTEC 5 process bus provides versatile solutions and migration concepts for new and existing systems.

Main functions:

Merging unit

Bay unit for distributes busbur protection SIPROTEC 7SS85

Breaker functions

Backup protection functions

Additional functions

Communication:

Up to 4 sampled measured value streams according IEC 61850-9-2 LE or IEC 61869 flexible streams

Hardware flexibility:

Flexibly adjustable and expandable I/O quantity structure within the scope of the modular SIPROTEC 5 system; 1/6 expansion modules can be added.

Housing width:

1/3 × 19 inches to 2/1 × 19 inches

As standard:

Conformal coating

Product homepage - downloads from the internet (catalogs, certificates, firmware, manuals,...)

www./6MU85

Adaptable to multiple CT, VT, LPIT inputs

Scalable number of binary inputs and outputs

Expandable by a 2nd row

Direct “high speed” tripping of circuit breaker < 1 ms

Collection of additional data (temperature, pressure, tap changer positions, …)

Cyber Security in accordance with NERC CIP and BDEW Whitepaper requirements

Highest availability even under extreme environmental conditions  by "conformal coating" of electronic boards

Merging unit functionality can also be added to all modular SIPROTEC 5 protection devices

Merging unit for:

Analog and digital feeder values

One central merging unit or distributed merging unit for the process data acquisition of a transformer protection schema

Central protection

Bay unit for distributed busbar protection

Fault recorder for process bus

Centralized synchrocheck

Merging unit functionality can also be added to all modular SIPROTEC 5 protection devices.

Merging Unit

Per ETH-BD-2FO Ethernet module 1 or 2 (in preparation) Sampled Measured Value (SMV) streams 

- up to 32 analog values in any combination of CTs and VTs or
- 4x CTs, 4x VTs (IEC 61850-9-2 LE)

Up to 4 ETH-BD-2FO modules possible

Reliable and redundant data transmission via PRP protocolIEC 61869-9, IEC 61869-13 compliant

IEC 61850-8-1 GOOSE, MMS and merging unit protocol on the same Ethernet module

Sample and date/time synchronization via IEEE 1588v2/PTP

Redundant power supply

Extended temperature range (-40 ºC to 70 ºC)

Merging unit functionality is also available for all modular SIPROTEC 5 protection devices. 

Breaker functions

Control with switchgear interlocking

Circuit-breaker failure protection (50BF)

Circuit-breaker wear monitoring

Switching statistics

Point on wave switching (PoW)

Trip-circuit supervision (74TC)

Automatic reclosing (79)

Synchrocheck (25)

Backup protection functions

Non-directional overcurrent protection (50/51, 50N/51N)

Directional overcurrent protection (67/67N)

Overvoltage and undervoltage protection (27/59) 

Additional functions

Phasor measurement unit (PMU) for synchrophasor measured values and IEEE C37.118 protocol

Arc protection

Auxiliary functions for simple tests and commissioning

Temperature measurement via thermobox TR1200 (7XV5662-6AD10 or 7XV5662-8AD10)

4-20 mA transducer inputs for various analog process values, e.g pressure, tap-changer position

Communication

Pluggable communication modules, usable for different and redundant protocols (IEC 61850-8-1, IEC 61850-9-2, IEC 60870-5-103, IEC 60870-5-104, Modbus TCP, DNP3 serial and TCP, PROFINET IO)

Serial protection data communication via optical fibers, two-wire connections and communication networks (IEEE C37.94, and others), including automatic switchover between ring and chain topology

Extensive Cyber Security functionality, such as role-based access control (RBAC), protocolling security-related events or signed firmware

Simple, quick and secure access to device data via a standard Web browser – without additional software