ABB SPAD346C3 Stabilized differential relay

The ABB SPAD346C3 Stabilized differential relay is a three-phase, microprocessor-based relay designed for the protection of two-winding power transformers and generator-transformers. It is a multifunction relay that combines the functions of a differential relay, an overcurrent relay, and an earth-fault relay.

The differential relay function protects the transformer against internal faults, such as short circuits between turns or windings. The overcurrent relay function provides backup protection against external faults, such as line faults. The earth-fault relay function provides protection against earth faults within the transformer.

The SPAD346C3 relay is a versatile relay that can be used in a variety of applications. It is a popular choice for protecting transformers in industrial plants, commercial buildings, and utility substations.

Some of the key features of the SPAD346C3 relay include:

1. ·Three-phase differential relay
2. ·Three-phase overcurrent relay
3. ·Multi-configurable earth-fault relay
4. ·Three-stage overcurrent protection
5. ·Two-stage backup earth-fault protection
6. ·Communication capabilities
7. ·Wide range of settings
8. ·Compact design

The SPAD346C3 relay is a reliable and easy-to-use relay that provides comprehensive protection for transformers. It is a good choice for a variety of applications.

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