SIPROTEC 7UT82 Two-winding transformer differential protection


Catalog excerpts

SIPROTEC 7UT82 Two-winding transformer differential protection - 1

Description The SIPROTEC 7UT82 transformer differential protection has been designed specifically for the protection of two-winding transformers. It is the main protection for the transformer and contains many other protection and monitoring functions. The additional protection functions can also be used as backup protection for subsequent protected objects (such as short cables and lines, reactance coil (shunt reactors)). The modular expandability of the hardware supports you in this process. With its modular structure, flexibility, and the high-performance DIGSI 5 engineering tool, SIPROTEC 7UT82 offers future-oriented solutions for protection, control, automation, monitoring, and Power Quality - Basic. Main function 1 differential protection function (standard or auto transformer) with additional stabilization; up to 2 restricted ground-fault protection functions Usable measuring 2 x 3-phase current measuring points, points 2 x 1-phase current measuring points Inputs and outputs 1 predefined standard variant with 8 current transformers, 7 binary inputs, 7 binary outputs Hardware The 1/3 base module is available with flexibility the IO103 module; it is not possible to add 1/6 expansion modules, available with large and small display Housing width 1/3 x 19 inches Applications • Protection of special transformers (phase shifter, FACTS and converter transformers, arc furnace transformers, HVDC transformers) • Backup protection for motor and generator differential protection applications SIPROTEC 7UT82 Transformer Differential Protection (1/3 device = standard variant W1) Functions DIGSI 5 permits all functions to be configured and combined as required. • Transformer differential protection for two-winding transformers with versatile, additional protection functions • Transformer differential protection for phase-angle regulating transformers of the single core type • Universal usability of the permissible measuring points • Applicable from average up to extra-high voltage • Protection of standard power transformers, auto transformers, short lines, cables, shunt reactors and motors • Increased sensitivity with near-neutral-point ground faults through a separate restricted ground-fault protection For protection of short cables and lines

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SIPROTEC 7UT82 Two-winding transformer differential protection - 2

• Flexible adaptation to the transformer vector group • Controlling closing and overexcitation processes • Safe behavior in case of current-transformer saturation with different degrees of saturation • Adaptive adaptation of the operate curve to the transformer tap position • Arc protection • Graphical logic editor to create powerful automation functions in the device • Single line representation in small or large display • Integrated electrical Ethernet RJ45 for DIGSI 5 and IEC 61850 (reporting and GOOSE) • Up to 2 optional pluggable communication modules, usable for different and...

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