Description
Brand: ABB
Product Series: Arc Guard System TVOC-2 Series
Model: TVOC-2-240 (Part Number: 1SFA664001R1001)
Product Type: High-Speed Optical Arc Flash Protection Relay / Main Arc Monitor Unit

ABB 1SFA664001R1001 ARC MONITOR TVOC-2-240
Technical Parameters:
Core Function: Optical arc flash safety mitigation system designed to instantaneously detect the intense light emission of an internal electrical arc and trigger upstream current breaking devices.
Response Reaction Time: Ultra-fast reaction time under 1 millisecond (ms) via integrated solid-state IGBT outputs, instantly forwarding electrical trip commands to clear faults.
Supply Voltage Range: Universal input configuration supporting 100 to 240 VAC (50/60 Hz) or 100 to 250 VDC power networks.
Sensor Input Capacity: Features 10 onboard optical detector inputs, expandable up to 30 channels by integrating up to two secondary extension sub-modules.
Tripping Interface: Equipped with high-speed solid-state IGBT contacts capable of driving up to 3 independent circuit breakers with localized zone selectivity.
Auxiliary Signaling: Features 3 Normally Open (NO) switching outputs and 3 change-over (SPDT) signal contacts for status automation and remote monitoring.
Functional Safety Certification: SIL-2 certified according to IEC 61508 and IEC 62061 industrial standards, ensuring high performance reliability for life-safety systems.
Energy Backup Reservoir: Built-in energy storage cells allowing full functionality and trip execution for up to 0.2 seconds following an absolute logic power blackout.
Network Communication: Supports digital telemetry updates via pluggable serial expansion options (such as Modbus RTU protocols).
User Interface (HMI): Modular detachable graphic display interface designed for remote panel-door installation to view status changes safely without opening the switchgear enclosure.
Physical Architecture: Compact wall or rack-mountable IP20 chassis measuring 210 mm (Width) x 230 mm (Height) x 80 mm (Depth) with a net weight of 1.2 kg.
Industrial Sectors:
Electrical Power Generation (Conventional and Renewable Facilities), Heavy Industrial Manufacturing (Steel Mills, Chemical Plants, Paper Foundries), Large Data Centers and Infrastructure Hubs, Mining and Subsurface Excavation, Utilities Substation Networks, and Marine Electrical Propulsion Operations.
Application Scenarios:
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Low and Medium Voltage Switchgear Protection: Deployed directly inside main low-voltage (LV) or medium-voltage (MV) distribution switchboards to oversee busbar joints, preventing catastrophic structural explosions during insulation breakdown.
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Motor Control Center (MCC) Safety Supervision: Installed within industrial MCC cubicles to monitor motor starter compartments, shutting down regional breakers immediately if a mechanical disconnect generates an open electrical flash.
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Renewable Substation Grid Interface Monitoring: Integrated into solar inverter rooms or wind turbine distribution kiosks to sense thermal arc anomalies inside heavy transformer cabinets.
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Marine Substation Switchboard Redundancy: Positioned within the main electrical switchboards of industrial cargo ships or drilling platforms to limit internal arc energy dissipation, preserving auxiliary grid function during severe maritime operations.


