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Transformer Protection
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Transformer protection provides full-scheme protection and control for various transformer applications, including two-winding transformers, three-winding transformers and auto-transformers. It also can be used to protect shunt reactors. It adopts adaptive-blocking and cross-blocking methods for inrush current to improve the performance.
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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 co…
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PCS-978 Transformer Relay
PCS-978 provides full scheme protection and control solution for varies type power transformers including multiple-winding transformers and auto-transformers, as well as shunt reactors. It integrates up to 36 current/voltage inputs in order to be suitable for applications like one-and-a-half breaker or ring breaker arrangements. Up to 6 group CT inputs are included in current differential protection. In addition, 288 vector groups are available for 3-winding transformers, as well as 24 vector groups, which available for 2-winding transformer.The unique current differential protection …
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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-…
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PCS-974 Mechanical Relay
PCS-974 is a dedicated auxiliary relay for transformer nonelectrical protection. This IED provides sixteen high-powerpickup binary inputs for mechanical element monitoring, alarming and tripping. The high-power-pickup design reduces the risk of Electro-Magnetic Interference (EMI) in order to improve reliability. Generally, mechanical relays include winding temperature relays, oil temperature relays and buchholz relays. The relay can be used for transformer and generator protection.The PCS-974 is compatible with IEC 61850 station bus and process bus applications. It supp…
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PCS-9671 Transformer Relay
PCS-9671 is a compact numerical relay for two-winding transformers. It can be utilized for reactor or stub-bus current differential protection. It also can be used to protect reactors or implemented as a stub current differential protection in a oneand- a-half breaker arrangement. The restraint current differential protection, unrestraint differential protection and restricted earth fault protection are provided.Comprehensive flexibility is provided via the modular hardware design, scalable function library, programmable logics, configurable I/Os and definable LEDs. This allows us…
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