Description
The AQ-110F arc flash protection device for medium-voltage systems supports both current and light sensing. Acting as the main unit of the arc flash protection system, the AQ-110F detects overcurrent in the incoming feeder and a light signal from a sub-unit, or from a light detection sensor connected to the device itself. It then trips the circuit breaker that is the source of the fault current, thereby significantly reducing the damage caused by an arcing fault (arc flash).
The AQ-110F devices also support Rogowski sensors, offering superior flexibility and ease of installation, especially for retrofit projects. This feature also enables the expansion of arc flash protection to parts of the switchgear that are not covered by current transformers.
This multipurpose arc flash protection device is suitable for a variety of applications, from stand-alone devices to a main unit of a more complex arc protection system. AQ-110F’s Modbus RTU communication enables integrating the arc flash protection system into a SCADA/DCS system directly, or via an AQ 250 protection and control device. This allows for transferring all data about the alarms, sensors, and input/output signals –available locally on the HMI of the arc protection device– to the SCADA/DCS system e.g. according to the IEC 61850 standard.
AQ-110F arc fiber sensor device with overcurrent is a sophisticated microprocessor-based arc flash protection device with combined current and arc sensing, which provides two (2) integrated trip criteria. It is designed to minimize the damage caused by an arcing fault (arc flash) by tripping the circuit breaker that sources the fault current. Additionally, the complete system self-supervision function of AQ-110F provides the highest level of dependability by continuously monitoring all internal system functions as well as external connections.
The AQ-110F arc fiber sensor device with overcurrent is a multipurpose arc flash protection device which is applicable to a variety of applications. AQ-110F can therefore function as a stand-alone device or as the main unit of a more complex arc protection system via a binary bus.
Highlights:
- A wide range for the power supply (18…72 V DC or 92…265 V AC/DC).
- Three-phase and residual current detection.
- Support for Rogowski sensors.
- Max. 1 fiber loop sensor per main unit.
- Connectivity to both MV (AQuench) and LV (AQ-1000) arc quenching systems.
- 4 trip relays (with 7 ms total trip time).
- Complete system self-supervision.
- 2 binary inputs and 1 binary output.
- A multi-function push button (“SET”) with auto-configuration, indication reset, and system check.
- 19 indication LEDs.
Learn more about how different protection techniques affect the consequences of an arc flash:
“Arc flash comparison” by Arcteq Relays (https://youtu.be/EUlZ_a_rcIg)
