AQ-T256 Transformer protection device


AQ-T256 Transformer protection device AQ-T256 Transformer protection device Ask for an offer Home Protection relays Transformer protection & control AQ-T256 Transformer protection device Description AQ-T256 is a transformer protection device with sophisticated and easy-to-use differential protection functions. The relay provides overcurrent protection for both low-voltage and high-voltage sides, earth fault protection, negative sequence overcurrent protection as well as two independent instances of restricted earth fault protection. You can add up to ten (10) I/O or communication cards into the device for extensive monitoring and control applications. AQ-T256 is a transformer protection device with a sophisticated and easy-to-use differential protection function. communicates using various protocols, including the IEC 61850 substation communication standard. Highlights: A large I/O capacity. Both predefined and customizable connection group selection. 2nd and 5th harmonic blocking. Automatic verification of connection group and nominal value settings. Overloading and through fault statistics for preventive maintenance. Technical data Non-directional overcurrent (I>; 50/51) - 4 stages (INST, DT or IDMT) Non-directional earth fault (I0>; 50N/51N) - 4 stages (INST, DT or IDMT) Negative sequence overcurrent/ Phase current reversal/ Current unbalance (I2>; 46/46R/46L) - 4 stages (INST, DT or IDMT) Harmonic overcurrent (Ih>; 50H/51H/68H) - 4 stages (INST, DT or IDMT) Circuit breaker failure protection (CBFP; 50BF/52BF) Resistance temperature detectors (RTD) Transformer thermal overload (TT>; 49T) Generator/transformer differential (Idx>; 87T/87M/87G) Transformer status monitoring Programmable stage (PGx>/<; 99) Arc protection (IArc>/I0Arc>; 50Arc/50NArc) (optional) Number of objects to control and monitor: 10 Number of indicators to monitor: 10 Number of setting groups: 8 Switch-on-to-fault Phase, sequence and residual currents (IL1, IL2, IL3, I01, I02) Current transformer supervision - 2 instances Circuit breaker wear monitoring Total harmonic distortion (current) Measurement recorder Measurement value recorder Event recorder (max. 15 000 permanent event records) Disturbance recorder (max. 100 records á 5 seconds at 3.2 kHz sampling) Current inputs: 10 Digital inputs (fixed): 3 Digital outputs (fixed): 5 Number of empty slots: 10 Digital inputs: +8/16/24/32/40/48/56/64/72/80 (optional) Digital outputs: +5/10/15/20/25/30 (optional) Milliampere I/O module (4 mA outputs + 1 mA input) Arc protection module (4 sensors + 2 HSO + 1 BI) Communication media (see "Communication" below) External I/O modules (see "Accessories" below) Communication inputs RJ-45 100 Mbps Ethernet (front panel, fixed) RJ-45 100 Mbps Ethernet and RS-485 (rear panel, fixed) 2 x RJ-45 100 Mbps Ethernet with an IRIG-B input (optional) 2 x ST 100 Mbps Ethernet with an IRIG-B input (optional) 2 x LC 100 Mbps Ethernet (PRP/HSR) (optional) RS-232 serial fiber (PP/PG/GP/GG) (optional) Communication protocols IEC 61850 (edition 1) IEC 61850 (edition 2) IEC 60870-5-101/104 IEC 60870-5-103 Modbus/RTU and Modbus/TCP DNP3 SPA AX007 External 6-channel 2-/3-wire RTD input module (pre-configured) AX008 External 8-channel thermocouple and mA input module (pre-configured) AX013 Raising frame (120 mm) AX014 Raising frame (40 mm) AX015 Wall mounting bracket Additional material Application Drawing Device Rear Image Device and Cut-out Image Order Code Download application drawing Download device rear image Download device and cut-out dimensions Download order code Download AQ 200 series flyer, v2.01 (English) AQ 200 series flyer, v2.01 (Finnish) AQ 200 series flyer, v2.01 (Swedish) AQ 200 series product catalog (ANSI), v2.02 (English) AQ 200 series product catalog (IEC), v2.00 (English) AQtivate PRO flyer, v1.00 (English) AQtivate PRO flyer, v1.00 (Finnish) AQ-T256 Instruction manual (v2.11, English) AQ 200 series DNP3 device profile v4.00 (English) AQ 200 series DWG connection drawings (.zip file) AQ 200 series IEC 103 interoperability list v1.00 (English) AQtivate 200 Instruction manual v2.02 (English) Related products AQ-T215 Voltage regulating device AQ-T215 is a voltage regulating device. 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Description

AQ-T256 is a transformer protection device with sophisticated and easy-to-use differential protection functions. The relay provides overcurrent protection for both low-voltage and high-voltage sides, earth fault protection, negative sequence overcurrent protection as well as two independent instances of restricted earth fault protection. You can add up to ten (10) I/O or communication cards into the device for extensive monitoring and control applications. AQ-T256 is a transformer protection device with a sophisticated and easy-to-use differential protection function. communicates using various protocols, including the IEC 61850 substation communication standard.

Highlights:

A large I/O capacity.
Both predefined and customizable connection group selection.
2nd and 5th harmonic blocking.
Automatic verification of connection group and nominal value settings.
Overloading and through fault statistics for preventive maintenance.

Technical data

Non-directional overcurrent (I>; 50/51) - 4 stages (INST, DT or IDMT)
Non-directional earth fault (I0>; 50N/51N) - 4 stages (INST, DT or IDMT)
Negative sequence overcurrent/ Phase current reversal/ Current unbalance (I2>; 46/46R/46L) - 4 stages (INST, DT or IDMT)
Harmonic overcurrent (Ih>; 50H/51H/68H) - 4 stages (INST, DT or IDMT)
Circuit breaker failure protection (CBFP; 50BF/52BF)
Resistance temperature detectors (RTD)
Transformer thermal overload (TT>; 49T)
Generator/transformer differential (Idx>; 87T/87M/87G)
Transformer status monitoring
Programmable stage (PGx>/<; 99)
Arc protection (IArc>/I0Arc>; 50Arc/50NArc) (optional)