PRS-7741 Bay Control Unit
The PRS-7741 relay is a numerical Bay Control Unit (abbreviated as BCU) which can be used in various voltage level, ranging from 1000kV to 10kV.
- HOME
- SOLUTIONS
- CASES
- PRODUCTS
-
Busbar Protection
-
Transformer Protection
-
Transmission Line Protection
-
Breaker Protection
-
Feeder Protection
-
Auxiliary Relay
-
Merging Unit
-
Digital Fault Recorder
-
Power Stability Control System
-
Power Generation Forecast
-
Primary Frequency Controller
-
Power Plant Controller
-
Box Transformer Terminal Unit
-
Centralized Control System
-
Prefabricated Container
Product Presentation
PRS-7741 is specifically designed for monitoring and controlling all types of apparatus in power systems, including circuit breaker, disconnector, earthing switch, etc. Additionally, it is integrated with tap changer control functions for transformer and shunt reactor as well.
This relay can sample the analog values from the traditional instrument transformers, or receive the sampled values from the electronic current and voltage transformers (via a merging unit). The binary inputs and outputs of this relay can be configured according to the demands of a practical engineering through the PRS IED Studio configuration tool auxiliary software, which can meet some special requirements of protection and control functions.
PRS-7741 is suitable to be applied in Substation Automation System (abbreviated as SAS) using different kinds of communication protocol, including IEC-61850 ED1 or ED2. It can also send/receive generic object oriented substation event (abbreviated as GOOSE) message in process level, which make it completely meet the demands of a modern digitalized substation.
Product Feature
-
Comprehensive Logging
Equipped with complete event recording functions for SOE, alarms, and operations, which is crucial for incident analysis, operation traceability, and equipment status monitoring.
-
Flexible Communication
Comprehensively supports mainstream communication protocols, including IEC61850 (with GOOSE), and enables data interaction with master stations via Ethernet and RS-485 serial ports.
-
Integrated Functions
Seamlessly integrates five functions—measurement, control, telemetry, merging unit, and remote module—significantly enhancing device integration and system reliability.
-
Powerful Platform
A robust hardware platform built on a 32-bit dual-core processor, high-speed bus, and intelligent I/O ports lays a solid foundation for data processing.
-
Precise Sampling
Utilizes 16-bit A/D converters and dual-channel sampling technology to ensure sampling accuracy; supports both traditional instrument transformer and electronic transformer input modes.
-
User-Friendly Interaction
Features a front-mounted LCD screen, keyboard, and indicator lights, providing an intuitive and user-friendly HMI for configuration and monitoring, ensuring ease of operation and maintenance.
Technical Specifications
Standard
IEC 60529:2013
Mounting Way
Flush mounted
Merchanical size
(width×high×deepth)
1/2 19” Case: 260mm*266 mm *217.7 mm
1/1 19” Case:482.6mm*266 mm *217.7 mm
Housing material
Metallic plates, parts and screws: Steel
Plastic parts: Polycarbonate
Protection class
Front side:IP40 (IP52 with seal strip)
Rear side, connection terminals: IP20
Other Sides: IP40
Communication Ports
3 Ethernet ports
2 RS-485 serial ports
Communication Protocol
IEC61850, IEC60870-5-103, DNP3.0 or ModBus.
Time Synchronization
SNTP, lEEE 1588, pulse per second (PPS) and IRlG-B
Function
AC analog input (Conventional CT/VT)
DC analog input
DC analog output
Binary input
Binary output
Duplicated binary outputs
Supported CB number for closing synchronism check
Programmable interlocking logic output
Related Products
PRS-7000 SCADA
PRS-7000 integrated monitoring system is a monitoring operating system self-designed and deeply-developed by CYG SUNRI based on SAS research achievements and field operating experience for many years.Learn morePRS-7910 Station Gateway
The PRS-7910 Communication Gateway is designed for the highest standards of performance, safety and reliability to meet requirements of a complex substation automation system (SAS).Learn morePRS-7961 Ethernet Switch
CYG PRS-7961 Layer 2 Industrial Ethernet Switch, designed for Communications Networking Devices Installed in Electric Power Substations and harsh industrial environment.Learn morePRS-7391 Time Synchronizer
PRS-7391 time synchronization device is applicable to substations and power plants with the voltage grade ranking at or above 10KV.Learn morePRS-7746A Phasor Measurement Unit
PRS-7746A synchronous PMU (the device) is mainly used for synchronous phasor measurement and output as well as dynamic recording for the power system.Learn morePRS-7012-PM Protection Information Master Station
As an important technical support means of power grid dispatching, the protection information processing system can quickly obtain the information of relay protection, safety automatic device and fault recorder when the power grid fails, and help dispatching and protection personnel to judge the nature of the fault and the action behavior of the protection, which plays an important role in the power grid accident handling.Learn moreRelated Solutions
-