ABB Transformer protection RET670
The wide application flexibility makes this product
an excellent choice for both new installations and
the refurbishment of existing installations.
Six packages have been defined for the following
applications:
• Transformer back-up protection (A10)
• Voltage control (A25)
• Two-winding transformer in single breaker
arrangements (A30)
•Two-winding transformer in multi breaker
arrangements (B30)
•Three-winding transformer in single breaker
arrangements (A40)
•Three-winding transformer in multi breaker
arrangements (B40)
Optional functions are not configured but a
maximum configuration with all optional functions
are available as template in the graphical
configuration tool. An alternative for
Autotransformers is also available as a
configuration template. Analog and tripping IO
has been pre-defined for basic use on the, as
standard supplied one binary input module and
one binary output module. Add binary I/O as
required for your application at ordering. Other
signals need to be applied as required for each application.