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AQ-G357 Generator protection device

AQ-G357 Generator protection device

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AQL357_web1
AQL357_web1

Description

AQ-G357 is a generator protection device for synchronized machines of all sizes. It integrates a full range of generator protection functions as well as a variety of additional functions for control, measurement, monitoring and communications.

Highlights:

  • Generator/motor differential protection.
  • Distance protection and loss of excitation protection.
  • Overexcitation protection.
AQL357_web1

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)
  • Voltage-restrained overcurrent (Iv>; 51V)
  • Negative sequence overcurrent/ Current unbalance (I2>; 46)
  • Thermal overload (T>; 49)
  • Generator differential (87G)
  • Overvoltage (U>; 59)
  • Undervoltage (U>; 27)
  • Residual overvoltage (U0>; 59N)
  • Harmonic overvoltage (64H)
  • Over- and underfrequency (f>/<; 81O/81U)
  • Rate-of-change of frequency (df/dt; 81R)
  • Directional overpower (P<; 32O)
  • Directional underpower (P>; 32U)
  • Impedance protection
  • Loss of excitation (40)
  • Volts-per-hertz overexcitation (V/Hz>; 24)
  • Circuit breaker failure protection (CBFP; 50BF/52BF)
  • Inrush detection and blocking
  • Distributed busbar protection (sub-unit) (optional)

  • Common function
  • Trip logic (94)
  • Dead line detection
  • Voltage variation

  • Current (IL1, IL2, IL3, I0)
  • Voltage (U1, U2, U3, U12, U23, U31, U0) and frequency (f)
  • Frequency (f)
  • Power (P, Q, S, pf) and Energy (E+, E-, Eq+, Eq-)
  • Current transformer supervision
  • Voltage transformer supervision (60)
  • Switching device status monitoring
  • Trip circuit supervision
  • Event recorder
  • Disturbance recorder

  • Standard
  • CPU module (MM/ST + RJ-45)
  • Power supply module (PS + fault relay + 2 trips)
  • Current measurement module (2 instances)
  • Voltage measurement module
  • Number of empty slots: 5
  • 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)
  • 2 x LC/MM (optional)
  • PRP/HSR (optional)
  • Communication protocols
  • IEC 60870-5-101/104/103
  • Modbus/RTU and Modbus/TCP
  • DNP3.0
  • IEC 61850 (optional)

  • Advanced "CyberProtect" cyber security feature (optional)

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Arcteq Relays Ltd
Kvartsikatu 2 A 1
65300 Vaasa, Finland
tel: +358 10 3221 370

Arcteq is a pioneer in arc flash protection, and we are known for making the most accurate protection devices in the world.

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Arcteq Relays Ltd
Kvartsikatu 2 A 1
65300 Vaasa, Finland
Business ID: 2342569-3
tel: +358 10 3221 370

MAIL INQURIES:

sales@arcteq.fi

TECHNICAL SUPPORT:

https://support.arcteq.fi/portal/home

ARCTEQ SUPPORT LINE:

+358 10 3221 388
EET 9:00 – 17.00