AQ-T215 Transformer Protection Device
Home Protection relays Transformer protection & control AQ-T215 Transformer Protection Device
Description
AQ-T215 is a voltage regulating device. It comes with current-based and voltage-based protection functions, which makes the relay suitable for combined transformer voltage regulation and back-up protection. The transformer monitoring module is included as a standard feature, and it provides statistical information for preventive maintenance purposes. AQ-T215 communicates using various protocols, including communication according to the IEC 61850 standard.
Highlights:
Automatic/manual voltage regulating (AVR).
Transformer back-up protection.
Overloading and through fault statistics for preventive maintenance.
Technical data
Non-directional overcurrent (I>; 50/51) - 4 stages
Non-directional earth fault (I0>; 50N/51N) - 4 stages
Directional overcurrent (Idir>; 67) - 4 stages
Directional earth fault (I0dir>; 67N/32N) - 4 stages
Negative sequence overcurrent/ Phase current reversal/ Current unbalance (I2>; 46/46R/46L) - 4 stages
Harmonic overcurrent (Ih>; 50H/51H/68H) - 4 stages
Circuit breaker failure protection (CBFP; 50BF/52BF)
High-impedance or low-impedance restricted earth fault/ Cable end differential (I0d>; 87N)
Overvoltage (U>; 59) - 4 stages
Undervoltage (U<; 27) - 4 stages
Neutral overvoltage (U0>; 59N) - 4 stages
Sequence voltage (U1/U2>/<; 47/27P/59PN) - 4 stages
Overfrequency and underfrequency (f>/<; 81O/81U) - 8 stages
Rate-of-change of frequency (df/dt>/<; 81R) - 8 stages
Overpower (P>; 32O)
Underpower (P<; 32U)
Reverse power (Pr; 32R)
Volts-per-hertz overexcitation (V/Hz>; 24)
Underimpedance (Z<; 21U)
Resistance temperature detectors (RTD)
Transformer status monitoring
Transformer thermal overload (TT>; 49T)
Programmable stage (PSx>/<; 99)
Arc protection (IArc>/I0Arc>; 50Arc/50NArc) (optional)
Number of objects to control and monitor: 5
Number of indicators to monitor: 5
Number of setting groups: 8
Cold load pick-up
Automatic voltage regulator (AVR; 90)
Vector jump (Δφ; 78)
Synchrocheck (ΔV/Δa/Δf; 25)
Phase, sequence and residual currents (IL1, IL2, IL3, I01, I02)
Phase, sequence and residual voltages (UL1, UL2, UL3, UL12, UL23, UL31, U0)
Frequency (f)
Power (P, Q, S, pf) and Energy (E+, E-, Eq+, Eq-)
Power and energy measurement accuracy of 0.5 %
Power and energy measurement accuracy of up to 0.2 % (optional)
Current transformer supervision
Voltage transformer supervision (60)
Circuit breaker wear monitoring
Total harmonic distortion (current)
Fault locator (21FL)
Running hour counter
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: 5
Voltage inputs: 4
Digital inputs (fixed): 3
Digital outputs (fixed): 5
Number of empty slots: 3
Digital input module (8 x DI) (optional)
Digital output module (5 x DO) (optional)
Milliampere output module (4 x mA out, 1 x mA in) (optional)
RTD input module (8 RTD inputs) (optional)
Arc protection module (4 x channels, 2 x HSO, 1 x BI) (optional)
Communication media (see "Communication" below)
External I/O modules (see "Accessories" below)
Standard communication ports
RJ-45 100 Mbps Ethernet (front panel, fixed)
RJ-45 100 Mbps Ethernet and RS-485 (rear panel, fixed)
Double RJ-45 Ethernet & IRIG-B communication module
Double ST Ethernet & IRIG-B communication module
Double LC (HSR/PRP) Ethernet communication module
Double RJ-45 (HSR/PRP) Ethernet communication module
RS-232 & serial fiber communication module
Communication protocols
IEC 61850 (edition 1)
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)
AX009 Raising frame (87 mm)
AX010 Raising frame (40 mm)
AX011 Combiflex frame
AX012 Wall mounting bracket
