AQ-T215 Voltage Regulating IED
AQ-T215 is a voltage regulating IED. It comes with current and voltage based protection functions as well making it suitable for combined transformer voltage regulation and back-up protection. Transformer monitoring module included as a standard feature provides for statistical information for preventive maintenance purposes. The AQ-T215 communicates using various protocols including IEC 61850 substation communication standard.
Highlights
- Automatic / manual voltage regulating (AVR)
- Transformer back-up protection
- Through fault and overloading statistics for preventive maintenance
| Protection |
|---|
| High/low impedance restricted earth fault / cable end differential * (87N1, 87N2) |
| Transformer thermal overload (49T/49RTD) |
| Three-phase overcurrent, 2+2 stages INST, DT or IDMT (50/51) |
| Earth-fault (sensitive), 3 stages INST, DT or IDMT (50/51N) |
| Harmonic overcurrent / inrush blocking, 4 stages INST, DT or IDMT (50/51H, 68) |
| Current unbalance / broken conductor, 2+2 stages INST, DT or IDMT (46/46R/46L) |
| Overvoltage, 4 stages INST, DT or IDMT (59) |
| Undervoltage, 4 stages INST, DT or IDMT (27) |
| Zero sequence overvoltage, 4 stages INST, DT or IDMT (59N) |
| Negative/positive sequence overvoltage, 4 stages INST, DT or IDMT (47) |
| Volts per hertz (24) |
| Breaker failure protection (50BF/52BF) |
| Arc protection (option) (50ARC/50NARC) |