AQ-C255 Capacitor bank protection devices


AQ-C255 Capacitor bank protection devices AQ-C255 Capacitor bank protection devices Ask for an offer Home Protection relays Capacitor bank protection AQ-C255 Capacitor bank protection devices Description The AQ-C255 capacitor bank protection devices have been specifically designed for the protection of capacitor banks. They include capacitor bank current unbalance, capacitor bank neutral unbalance, and overload protections in addition to the standard overcurrent, earth fault and voltage protections. AQ-C255 series offers a modular protection and control solution for applications that require a large I/O capacity. You can add up to 11 I/O or communication modules into the devices for extensive monitoring and control applications. The AQ-C255 capacitor bank protection devices communicate using various protocols, including the IEC 61850 substation communication standard. We offer four (4) variants of the AQ-C255 feeder protection device: A, B, C, and D. Highlights: Double busbar control. A large I/O capacity. Capacitor bank module with capacitor bank-specific protection functions. Current- and voltage-based protections. Cable-end differential protection. Low-impedance restricted earth fault protection. Harmonics protection and control. Power and energy measurement accuracy of up to 0.2 %. Up to 100 disturbance records. AQ-C255 variants AQ-C255A standard capacitor bank functionality Read more AQ- C255B includes: PFC (up to 5 capacitor banks) Read more AQ- C255C includes: standard voltage protections + PFC (up to 5 capacitor banks) Read more AQ- C255D includes: standard capacitor bank functionality + PFC (up to 4 capacitor banks) Read more Technical data Capacitor bank module (CBP) Capacitor bank current unbalance (Iuc>; 46C) Capacitor bank neutral unbalance protection (Cnu>; 50UB) Capacitor bank overload protection (Icol>; 49OL) 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) Directional overcurrent (Idir>; 67) - 4 stages (INST, DT or IDMT) Directional earth fault (I0dir>; 67N/32N) - 4 stages (INST, DT or IDMT) Intermittent earth fault (I0int>; 67NT) 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) Non-directional undercurrent (I<; 37) 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 (INST, DT or IDMT) Undervoltage (U<; 27) - 4 stages (INST, DT or IDMT) Neutral overvoltage (U0>; 59N) - 4 stages (INST, DT or IDMT) Sequence voltage (U1/U2>/<; 47/27P/59PN) - 4 stages (INST, DT or IDMT) Overfrequency and underfrequency (f>/<; 81O/81U) - 8 stages (INST or DT) Rate-of-change of frequency (df/dt>/<; 81R) - 1 stage (DT) Power protection (P, Q, S>/<; 32) - 4 stages (DT) Resistance temperature detectors (RTD) Line thermal overload (TF>; 49F) Voltage memory 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 Cold load pick-up Switch-on-to-fault Phase, sequence and residual currents (IL1, IL2, IL3, I01, I02) Phase, sequence and residual voltages (UL1, UL2, UL3, U12, U23, U31, U0) Frequency (f) Power (P, Q, S, pf) and Energy (E+, E-, Eq+, Eq-) Power and energy class 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) Total harmonic distortion (voltage) 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: 11 Digital inputs: +8/16/24/32/40/48/56/64/72/80/88 (optional) Digital outputs: +5/10/15/20/25/30 (optional) Milliampere I/O module (4 mA outputs + 1 mA input) (optional) Arc protection module (4 sensors + 2 HSO + 1 BI) (optional) 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 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 product catalog (ANSI, v2.03, EN, September 2024) AQ 200 series product catalog (ANSI), v2.03 (English) AQ 200 series product catalog (IEC, v2.02, English) AQ 200 series product catalog (IEC, v2.03, EN, September 2024) AQ-C255 Instruction manual (v2.13, English) Related products AQ-C215 Capacitor bank protection device The AQ-C215 capacitor bank protection device has been specifically designed for the protection of capacitor banks. […] AQ-C255A Capacitor bank protection device The AQ-C255A capacitor bank protection device has been specifically designed for the protection of capacitor banks. […] AQ-C255B Capacitor bank control and monitoring device The AQ-C255B capacitor bank control and monitoring device has been specifically designed for capacitor banks. It […] AQ-C255C Capacitor bank protection device The AQ-C255C capacitor bank protection device has been specifically designed for the protection of capacitor banks. […] Ask for an offer or more information We provide a comprehensive range of services through our own skilled staff and a global network of partners. Name(Required) First Last Country(Required) Email(Required) Add attachment Company(Required) Max. file size 300 MB Phone Add attachment Max. file size: 128 MB. Description(Required) What colour is a firetruck?(Required) To confirm you are not a robot, please answer this question. GDPR(Required) I agree to the Privacy Policy *

Description

The AQ-C255 capacitor bank protection devices have been specifically designed for the protection of capacitor banks. They include capacitor bank current unbalance, capacitor bank neutral unbalance, and overload protections in addition to the standard overcurrent, earth fault and voltage protections. AQ-C255 series offers a modular protection and control solution for applications that require a large I/O capacity. You can add up to 11 I/O or communication modules into the devices for extensive monitoring and control applications. The AQ-C255 capacitor bank protection devices communicate using various protocols, including the IEC 61850 substation communication standard.

We offer four (4) variants of the AQ-C255 feeder protection device: A, B, C, and D.

Highlights:

Double busbar control.
A large I/O capacity.
Capacitor bank module with capacitor bank-specific protection functions.
Current- and voltage-based protections.
Cable-end differential protection.
Low-impedance restricted earth fault protection.
Harmonics protection and control.
Power and energy measurement accuracy of up to 0.2 %.
Up to 100 disturbance records.

AQ-C255 variants

AQ-C255A

standard capacitor bank functionality

AQ- C255B includes:

PFC (up to 5 capacitor banks)

AQ- C255C includes:

standard voltage protections +
PFC (up to 5 capacitor banks)

AQ- C255D includes:

standard capacitor bank functionality +
PFC (up to 4 capacitor banks)

AQ-C255A application drawings, v1.00 (IEC)

AQ-C255B application drawings, v1.00 (IEC)

AQ-C255C application drawings, v1.00 (IEC)

AQ-C255D application drawings, v1.00 (IEC)

Technical data

Capacitor bank module (CBP)
Capacitor bank current unbalance (Iuc>; 46C)
Capacitor bank neutral unbalance protection (Cnu>; 50UB)
Capacitor bank overload protection (Icol>; 49OL)
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)
Directional overcurrent (Idir>; 67) - 4 stages (INST, DT or IDMT)
Directional earth fault (I0dir>; 67N/32N) - 4 stages (INST, DT or IDMT)
Intermittent earth fault (I0int>; 67NT)
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)
Non-directional undercurrent (I<; 37)
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 (INST, DT or IDMT)
Undervoltage (U<; 27) - 4 stages (INST, DT or IDMT)
Neutral overvoltage (U0>; 59N) - 4 stages (INST, DT or IDMT)
Sequence voltage (U1/U2>/<; 47/27P/59PN) - 4 stages (INST, DT or IDMT)
Overfrequency and underfrequency (f>/<; 81O/81U) - 8 stages (INST or DT)
Rate-of-change of frequency (df/dt>/<; 81R) - 1 stage (DT)
Power protection (P, Q, S>/<; 32) - 4 stages (DT)
Resistance temperature detectors (RTD)
Line thermal overload (TF>; 49F)
Voltage memory
Programmable stage (PGx>/<; 99)
Arc protection (IArc>/I0Arc>; 50Arc/50NArc) (optional)