PCS-9671S Transformer Relay

PCS-9671S has been designed specifically for the protection of various type power transformers (up to 3 measuring points), including two-winding transformers, three-winding transformers, auto-transformers, as well as shunt reactors, in 110kV voltage level and below. PCS-9671S provides the main protection elements, such as: current differential protection and restricted earth fault protection. With its modular structure, flexibility and the powerful PCS-Studio engineering tool, PCS-9671S offers future-oriented system solutions with high investment security and low operating costs.

PCS-978S Transformer Relay

PCS-978S transformer relay provides fast and selective protection, control and monitoring for two-winding transformers, three-winding transformers, auto-transformers, as well as shunt reactors. The full transformer protections are configurable by user. Ancillary functions of fault diagnostic, disturbance records, event records and communication function are integrated in the device.

PCS-978S is applicable not only to conventional substations, but also to digital substations. It supports IEC 61850 Editions 1 and 2 and provides GOOSE and SV network interfaces with high real-time performance. The process level network supports peer-to-peer (P2P) mode and networking mode, including single network mode and dual network mode. The station level network could also receive and send MMS messages (such as interlocking signals) or process level GOOSE messages (such as trip signals).