Independently developed and manufactured by GoWatron, the GWPR300-TD Transformer Differential Protection Relay is specially designed as the main protection for two-winding and three-winding power transformers with a voltage class of 132 kV and below. It supports both on-site cabinet mounting and centralized panel mounting in control rooms, integrating transformer differential main protection, non-electrical quantity acquisition with independent hardware tripping output, three-side current measurement, fault recording, sequence-of-event recording, multi-protocol communication and clock synchronization into a single unit.
- Equipped with dual Ethernet ports and RS485 dual communication channels, the relay is compatible with all types of substation integrated automation systems.
- Standard communication protocols: IEC 60870-5-104 and Modbus RTU, which support the upload of measured values, status signals, fault events, fault recording files and protection setting parameters.
- Optional communication protocol: IEC 61850 (supports MMS), meeting the networking requirements of intelligent digital substations.
