SO-52-MUA, SO-52-MUiO, SO-52v11-SER-PB — field devices of a digital substation
The field devices SO-52-MUA, SO-52-MUiO and SO-52v11-SER-PB form the process level of a digital substation. SO-52-MUA converts CT and VT signals of an individual bay, SO-52-MUiO collects discrete signals and issues commands to primary equipment, and SO-52v11-SER-PB performs supervision and bay automation. The devices are used at new digital substations and in the refurbishment of 110 kV and MV substation automation systems.
- SO-52-MUA
- field measuring converter (merging unit) of CT and VT signals, MPA-370-03 + MZA-205 module
- Process bus
- LVDS; two independent interfaces, PRP protocol
- Installation
- in the bay next to CT/VT or in an enclosed room
- SO-52-MUiO
- field control device (discrete input-output)
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
Networks are moving to Smart Grid with bidirectional energy flows, the share of renewable generation is growing, and the level of measurement and control at substations is changing. Substation automation has to interact with instrument transformers and protection of different bays, while digital communication between devices opens free exchange of information between elements of distributed automation. For this architecture the company produces three field devices that work with other devices of substation automation systems (SAS) over the LVDS process bus.
SO-52-MUA acts as a merging unit, a specialised measuring converter of voltage and current signals of individual bays. Depending on the version, it is installed in the bay next to conventional current and voltage transformers or in an enclosed room protected from the weather. It includes the MPA-370-03 measurement and communication module, which performs field analog measurements and serves the process bus, and the MZA-205 power supply. The device continuously measures voltages and currents of the VT and CT secondary circuits, processes them and sends the results through two independent communication interfaces. The interfaces work under the Parallel Redundancy Protocol PRP, so the device fits into redundant structures.
SO-52-MUiO collects discrete signals of primary equipment and issues control commands in bays. Through the process bus it passes the current states of the apparatus to higher-level SAS devices that need this data for control. The MWS-206-BH v.220 module has 32 discrete inputs with hysteresis and a burnishing function, that is, an increased input current at the start of operation for about 50 ms, then falling to 1 mA. Hysteresis stabilises input circuits in the demanding substation environment, and burnishing prevents them from overheating. All 32 inputs are galvanically isolated, and the number of inputs can be increased. The MPA-360-02 module adds 8 discrete inputs, 8 signalling outputs, 2x RS-485, 1x RS-232, service ports and the optical ETH-FX process bus port.
SO-52v11-SER-PB performs all supervision and automation tasks in a bay of a digital substation. In measurement, control and signalling it corresponds to the SO-52v11-SER controller and has additional functions of disturbance recording, fault location, power quality analysis and synchrocheck. The PB version has network interfaces for receiving measurement samples from the process bus, and it contains the MPA-360-01 module with optical ETH-FX ports for the process bus and communication. The company operates under ISO 9001, ISO 14001, ISO 45001, ISO/IEC 27001 and ISO 50001.
Technical specifications
| SO-52-MUA | field measuring converter (merging unit) of CT and VT signals, MPA-370-03 + MZA-205 module |
|---|---|
| Process bus | LVDS; two independent interfaces, PRP protocol |
| Installation | in the bay next to CT/VT or in an enclosed room |
| SO-52-MUiO | field control device (discrete input-output) |
| SO-52v11-SER-PB | field controller |
Request a price and lead time
SO-52-MUA, SO-52-MUiO, SO-52v11-SER-PB — field devices of a digital substation. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Customs codes
| UKTZED (Ukraine) | 8537 10 91 00 |
|---|---|
| HS, 6 digits | 8537 10 |
| CN (EU) | 8537 10 91 |
| HTSUS (USA) | 8537 10 91 50 |
| China customs tariff | 8537 10 12 00 |
Codes are for reference: the final code is determined at declaration for the specific model.
Questions and answers
How does SO-52-MUA transmit measurement results?
The device sends processed current and voltage values through two independent interfaces of the LVDS process bus under the Parallel Redundancy Protocol PRP. This is how it is built into redundant structures.
How many discrete inputs does SO-52-MUiO have?
The MWS-206-BH v.220 module has 32 galvanically isolated inputs with hysteresis and a burnishing function. The MPA-360-02 module adds 8 inputs and 8 signalling outputs.
What additional functions does SO-52v11-SER-PB have compared with SO-52v11-SER?
It additionally records disturbances, locates faults, analyses power quality and performs synchrocheck. The PB version receives measurement samples from the process bus.
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