Voltage protection relay AQ-T257

currentthree-phaseIEC

AQ-T257 is a transformer protection IED with differential protection function and integrated AVR function. The AQ-T257 transformer protection IED provides also for complete current and voltage based protection functions and full measurements. Up to 9 optional I/O or communication cards are available for extensive monitoring and control applications. The AQ-T257 communicates using various protocols including IEC 61850 substation communication standard. Highlight Large I/O capability 2nd and 5th harmonic blcocking Automatic / manual voltage regulating (AVR) Complete transformer protection 2nd and 5th harmonic blocking Automatic verification of connection group and nominal value settings Through fault and overloading statistics for preventive maintenance Up to class 0.2S power and energy measuring