PCS-221S Merging Unit

PCS-221S Merging Unit (MU) is used to receive AC analog values and transmit the Sampled Values (SVs) to protection devices, Bay Control Units (BCUs) or electricity meters through optical communication channels based on the IEC 61850-9-2 protocol and IEC61869-9 protocol. PCS-221S provides 2 methods to receive AC analog values: to sample AC analog values directly as a Stand-Alone Merging Unit (SAMU), or to receive digital sampling data from Low-Power Instrument Transformer (LPIT) via optical fiber. LPIT is also known as NCIT (Non-Conventional Instrument Transformer) or ECVT (Electronic Current & Voltage Transformer). 

The PCS-221S can also be used to control primary switching equipment, i.e.: Circuit Breaker (CB), Disconnector Switch (DS), Earthing Switch (ES) in digital substations of all voltage levels. It supports real-time GOOSE communication, and can realize tripping and closing of CB/DS/ES via protection devices and BCUs. It can acquire binary input signals of primary equipment (CB/DS/ES) at the same time. It can meet the requirements of GOOSE tripping by point-to-point mode or network mode.

PCS-9705S Bay Control Unit

The PCS-9705S Bay Control Unit (BCU) is a general-purpose control, protection and automation device in all substations, power plants and industrial domain applications. The modular conception permits the hardware adaption exact to client requirements.

The PCS-9705S is applicable not only to conventional substations but also to digital substations. It supports IEC 61850 edition 1.0 and 2.0 standard for modelling of various signals and provides MMS/GOOSE/SV network interfaces for independent or hybrid network in real-time. The process layer supports peer-to-peer (P2P) mode and networking mode, including single network mode and dual network mode. The station layer could receive and send MMS messages, such as interlocking signals, or GOOSE messages, such as switch positions and tripping signals.

PCS-9785 Satellite-Synchronized Clock

The PCS-9785 satellite-synchronized clock is usually used in Substation Automation System (SAS) to satisfy the time unifying requirements of protection relay, disturbance fault recorder and other IEDs.

A set of two PCS-9785 can form the "dual device dual network" redundancy strategy to provide a higher reliable and accuracy clock synchronization system.

PCS-9794 Protocol Converter

PCS-9794 is a protocol converter designed for the highest standards of performance, safety and reliability to meet requirements of a complex substation automation system (SAS). As an integral part of the SAS, it works as a communication manager, which maps signals between IEDs and the local SCADA or protection management unit. 

PCS-9794 transmits data to local SCADA or protection management unit through the IEC 61850 or IEC 60870-5-103, etc. protocols, and links IEDs with protocols such as Modbus through different kinds of communication interfaces.

PCS-9799S Station Manager

The PCS-9799S Station Manager is designed for the highest standards of performance, safety and reliability to meet requirements of a complex substation communication system. It serves as a station level gateway, which collects, processes and stores signals of relays, measurement units, control units and other IEDs in substation, and transfers them to higher-level systems such as remote control centre and distributed control system.

The PCS-9799S supports numerous common protocols in electric power and industrial industries, such as IEC 61850, IEC 60870-5-101/104, IEC 60870-5-103, Modbus, DNP3, etc. Data can be extracted from various IEDs and transferred to higher-level systems. The transparent transmission and the device independent operating mode avoid any interaction or influence with the substation SCADA system or other control systems. Furthermore, with the processing capability, the PCS-9799S can run as a programmable signal platform for a flexible and versatile signal processing and logic operations.

PCS-9882 Ethernet Switch

The PCS-9882 series managed Ethernet switches are designed for severe environments. It supports high data transmission rate to meet the increasing requirements in substation automation system (SAS), networked control system (NCS), distributed control systems (DCS), industrial system, etc.