Differential Protection Relay Block 7UT612 (2 windings) for Transformers, Generators, Motors and Busbars

Type : 7UT612

Application :

1. Generators
2. Motors
3. Short line sections
4. Small busbars
5. Parallel and series reactors.                                                                                                                                             The following functions are available
   1. Differential protection for 2- up to 5-winding transformers (3-/1-phase)
   2. Differential protection for motors and generators
   3. Differential protection for short 2 up to 5 terminal lines
   4. Differential protection for busbars up to 12 feeders (phase-segregated or with summation CT)
   5. Negative-sequence protection
   6. Phase /earth over current protection
   7. Overload protection with or without temperature measurement

This Motor Protection relay block is easily insert in your schematic diagram and connect as you like way.

The SIPROTEC 7UT612 differential protection relays are used for fast and selective fault clearing of short-circuits in transformers of all voltage levels and also in rotating electric machines like motors and generators, for short lines and bus bars. The protection relay can be parameterized for use with three-phase and single-phase transformers.The specific application can be chosen by parameterization. In this way an optimal adaptation of the relay to the protected object can be achieved.In addition to the differential function, a backup over current protection for 1 winding/star point is integrated in the relay. Optionally, a low or high-impedance restricted earth-fault protection, a negative sequence protection and a breaker failure protection can be used. With external temperature monitoring boxes ( thermo-boxes) temperatures can be measured and monitored in the relay. Therefore, complete thermal
monitoring of a transformer is possible, e.g. hot-spot calculation of the oil temperature.The relay provides easy-to-use local control and automation functions. The integrated programmable logic (CFC) allows the users to implement their own functions, e.g. for the automation of switch gear (interlocking). User-defined messages can be generated as well. The flexible communication interfaces are open for modem communication architectures with control system.