AQ-F350 Feeder protection device
Home Protection relays Feeder protection & control AQ-F350 Feeder protection device
Description
The AQ-F350 feeder protection device for the most demanding feeder protection applications. It integrates a full range of feeder protection functions as well as a variety of additional functions for control, measurement, monitoring, and communications.
Highlights:
Feeder protection up to 500 kV.
Synchrocheck function.
Optional voltage input for a CVT.
Technical data
Three-phase instantaneous/time overcurrent (I>; 50/51)
Residual instantaneous/time overcurrent (I0>; 50N/51N)
Directional three-phase overcurrent (Idir>; 67)
Directional residual overcurrent (I0dir>; 67N/32N)
Current unbalance (60)
Thermal overload (T>; 49)
Overvoltage (U>; 59)
Undervoltage (U>; 27)
Residual overvoltage (U0>; 59N)
Over- and underfrequency (f>/<; 81O/81U)
Rate-of-change of frequency (df/dt; 81R)
Circuit breaker failure protection (CBFP; 50BF/52BF)
Inrush detection and blocking
Distance protection (optional)
Distributed busbar protection (sub-unit) (optional)
Common function
Dead line detection
Synchrocheck (ΔV/Δa/Δf; 25)
Auto-recloser (0 → 1; 79)
Switch-on-to-fault
Voltage variation
Number of supervised trip contacts: 4
Current (IL1, IL2, IL3, I0)
Voltage (U1, U2, U3, U12, U23, U31, U0) and frequency (f)
Power (P, Q, S, pf) and Energy (E+, E-, Eq+, Eq-)
Current transformer supervision
Voltage transformer supervision
Trip circuit supervision
Switching device status monitoring
Event recorder (max. 10 000 permanent event records)
Disturbance recorder
Standard
CPU module (MM/ST + RJ-45)
Power supply module (PS + fault relay + 2 trips)
Current measurement module
Voltage measurement module
Number of empty slots: 6
Options
6 digital inputs (1x6) + 5 digital outputs
8 digital inputs (1x8)
12 digital inputs (3x4)
16 digital inputs (2x8)
9 digital inputs (3x3) with IRIG-B (BNC)
8 digital outputs (1x8)
12 digital outputs (4x3)
16 digital outputs (2x8)
Trip module (4 outputs)
4-channel RTD module
4-channel analogue input module (2-wire)
Communication inputs
RJ-45 100 Mbps Ethernet + MM/ST fiber optic Ethernet
2 x ST/MM redundant fiber optic Ethernet (optional)
ST/MM fiber optic Ethernet and RS-485 (optional)
LC/MM and RJ-45 (optional)
2 x LC/MM (optional)
PRP/HSR (optional)
Communication protocols
IEC 61850 (optional)
IEC 60870-5-101/104/103
Modbus/RTU and Modbus/TCP
DNP3.0
Advanced "CyberProtect" cyber security feature (optional)
