Remote Terminal Unit (Multi-functional)

Remote Terminal Unit (Multi-functional) remotely monitors and controls electric power facilities at transformer substations. It provides operating information to higher sub control center system or controls electric power facilities based on an order from a higher system to include acquisition, analysis and processing of operation data.

▶ 32Bit Processor
▶ Dualized main equipment such as CPU, communication circuits etc
▶ Monitor communication condition
▶ Dualized power input (DC/AC)
▶ CT, PT direct measurement (TDLess)
▶ Programmable Logic support (IEC61131-3)
▶ RTU DB management, self-diagnosis & I/O Test function
▶ DNP 3.0, DNP KEPCO, Harris 5000/6000, SICS, MODBUS Customized Mapboard protocol support etc

Main Processor Redundancy (MPD)
▶ Main CUp module (MPU)
    - CPU: 32bit CPU
    - VMEbus Master Interface
    - Memory: DRAM 8MB, SRAM 128KB
    - RS-232C 4Port(including one for maintenance and repair)
▶ High-speed communications module (CCU), low-speed communications module (SIO)
    - CPU: 32bit CPU
    - VMEbus Master Interface
    - Memory: SRAM 512KB, EEPROM 32KB
    - High-speed: RS-232C 2Port, RS-485 4Port
    - Low-speed: RS-232C 8Port, RS-485 4Port

On-site control equipment (FPD)
▶ CPU module
    - CPU: 32bit CPU
    - VMEbus Master Interface
    - Memory: SRAM 512KB, 32KB Flash
    - RS-232C 2Port, RS-485 2Port
▶ Monitor module
    - CPU: 16bit CPU
    - VMEbus Slave Interface
    - Point storage: 32Point/Module
    - Printout signal: Relay Contact
▶ Control module
    - CPU: 16bit CPU
    - VMEbus Slave Interface
    - Point storage: 16Point/Module
    - Printout signal: Relay Contact
Intelligent Measureing Equipment (IAPD)
▶ Control module
    - CPU: 32bit CPU, 16MHz
    - 128KB Battery Backup Memory
    - Parallel Bus internal connection using Dual Port Memory
    - RS-232C 4Port (Including one for maintenance and repair)

▶ Signal conversion module
    - CPU: 16bit CPU, 16MHz
    - 32KB Battery Backup Memory
    - Analog conversion: 18Ch/Module
    - T/L & M.tr (CT,Pt separate), for D/L usage (CT, PT combined)
▶ Interface module
    - Current interface module: 0 5A, 3, 2EA
    - Electric power interface module: 0 5A CT, 0 150V P.TCT, TP 3, 1EA
    - Voltage interface module: 0 150V P.T 3, 2EA
    - power supply module
      ※System configuration & specifications are subject to change as per requirements.

▶ Transformer substation electric power supervisory control
▶ Large-sized plant supervisory control