ABB TVOC-2-240 1SFA664001R1001 IGBT Trip Contact Product Details

The ABB TVOC-2-240 1SFA664001R1001 ​is a high-performance arc protection relay manufactured by ABB,designed to monitor and mitigate arc flashover phenomena in industrial equipment.This advanced arc monitor delivers exceptional reliability and precision in detecting arc faults,ensuring personnel safety and equipment protection in demanding industrial environments.

Application Scenarios

In a 600MW coal-fired power plant’s medium-voltage switchgear system,the ABB TVOC-2-240 1SFA664001R1001​was deployed to address critical arc flash protection challenges.The plant’s existing protection system had response times exceeding 50 milliseconds,creating significant risks for equipment damage and personnel safety during arc fault events.The implementation involved installing eight ABB TVOC-2-240 1SFA664001R1001​units across four switchgear bays,each connected to eight optical detectors customized for the specific cabinet dimensions.The system was integrated with the plant’s existing circuit breakers to enable zone-selective tripping,with HMI panels mounted on cabinet doors for real-time fault diagnostics and monitoring.

The ABB TVOC-2-240 1SFA664001R1001’s advanced arc detection technology reduced arc fault detection time from 50ms to less than 1ms,achieving a 98%improvement in response speed.The system’s high sensitivity and fast IGBT contacts enabled it to send trip signals to circuit breakers within 1 millisecond,effectively extinguishing arcs before they could cause significant damage.Over 18 months of continuous operation,the power plant experienced zero unplanned outages related to arc faults,while achieving full compliance with IEC 62271-200 arc flash protection standards.The modular design of the ABB TVOC-2-240 1SFA664001R1001​allowed for easy integration with the plant’s existing infrastructure,minimizing installation downtime and ensuring seamless operation across the entire switchgear system.

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Parameter:Value/Description

Product Model:ABB TVOC-2-240 1SFA664001R1001​

Manufacturer:ABB

Product Category:Arc Protection Relay

Supply Voltage:100-250V DC or 100-240V AC 50/60Hz

Response Time:<1ms electrical signal transmission

Detector Inputs:10 native optical detectors

Expansion Capability:Up to 30 detectors with 2 extension units

Trip Outputs:Up to 3 circuit breakers with zone selectivity

HMI Interface:External door-mounted human-machine interface

Power Loss:1.5W

Operating Temperature:-25°C to+55°C

Dimensions:210×230×80 mm

Weight:1.2 kg

Mounting Type:Wall mounted or DIN rail

Protection Class:IP20

Safety Certification:SIL-2(IEC61508,IEC62061)

Technical Principles and Innovative Values

The ABB TVOC-2-240 1SFA664001R1001​employs advanced optical detection technology combined with high-speed signal processing to deliver unparalleled arc protection performance.The system’s core innovation lies in its ability to detect arc light and transmit trip signals within 1 millisecond through fast IGBT contacts,significantly faster than conventional protection systems.

Innovation Point 1:Ultra-Fast Response Technology-The ABB TVOC-2-240 1SFA664001R1001​features a proprietary optical detection system that can identify arc flash events within microseconds.The system’s microprocessor-controlled processing architecture analyzes light intensity and spectrum characteristics to distinguish between normal electrical phenomena and dangerous arc faults,ensuring accurate detection while minimizing false trips.The integrated IGBT solid-state tripping contact provides reliable,bounce-free operation with response times under 1ms,compared to 10-20ms for traditional electromechanical relays.

Innovation Point 2:Modular and Scalable Architecture-The ABB TVOC-2-240 1SFA664001R1001​adopts a modular design concept that supports flexible system expansion.With 10 native detector inputs and the capability to expand to 30 detectors using two extension units,the system can be tailored to protect complex switchgear configurations of any size.The modular approach allows for cost-effective system growth and easy integration with existing protection schemes,making it suitable for both new installations and retrofit applications.

Innovation Point 3:Advanced Zone-Selective Protection-The ABB TVOC-2-240 1SFA664001R1001​implements intelligent zone-selective tripping logic that can selectively trip up to three circuit breakers based on which light sensor detects the arc.This feature minimizes the impact of faults by isolating only the affected section of the system,maintaining power to healthy equipment and reducing downtime.The system’s current sensing capability further enhances selectivity by distinguishing between arc faults and normal load currents,ensuring that protection operates only when necessary.

Innovation Point 4:Comprehensive Safety Certification-The ABB TVOC-2-240 1SFA664001R1001​has achieved functional safety SIL-2 certification according to IEC61508 and IEC62061 standards,demonstrating its reliability and suitability for safety-critical applications.This certification is consistent with the d-level performance requirements in EN ISO13849-1,ensuring that the system meets the highest standards for personnel and equipment protection.The SIL-2 rating provides confidence that the system will perform its safety function with the required reliability,even under demanding conditions.

Application Cases and Industry Value

Case Study:Petrochemical Refinery MCC Protection

A major petrochemical refinery implemented the ABB TVOC-2-240 1SFA664001R1001​to protect 480V motor control centers(MCCs)located in Zone 2 hazardous areas where flammable vapors presented significant arc flash risks.The refinery’s existing protection system lacked adequate arc detection capabilities,creating potential for catastrophic equipment damage and personnel injuries.

The ABB TVOC-2-240 1SFA664001R1001​units were installed with intrinsically safe optical detectors specifically designed for hazardous environments.Current sensing units were integrated to provide additional discrimination between arc faults and normal operating currents.The system was interfaced with the refinery’s distributed control system(DCS)via Modbus RTU protocol,enabling remote monitoring and centralized fault management.The implementation included comprehensive zone-selective coordination to ensure that only the affected MCC section would be isolated during a fault,minimizing production impact.

The results were exceptional:the system prevented two potential arc-induced fires within the first year of operation by isolating faults within 0.8 milliseconds.Maintenance downtime was reduced by 35%through the HMI-enabled predictive diagnostics and remote monitoring capabilities.The refinery achieved full compliance with NFPA 70E requirements for electrical safety in hazardous locations,while the fast fault clearance significantly reduced the incident energy levels,enhancing personnel safety.The project delivered a return on investment within 18 months through reduced equipment damage,lower maintenance costs,and improved production uptime.

Case Study:Steel Mill Transformer Protection

A large steel mill deployed the ABB TVOC-2-240 1SFA664001R1001​to protect 33kV/11kV transformers from arc faults in tap-changer compartments,following a$200,000 equipment damage incident in 2023.The transformers were critical to the mill’s continuous operation,and any unplanned downtime would result in significant production losses.

Each transformer was equipped with one ABB TVOC-2-240 1SFA664001R1001​unit paired with six fiber-optic detectors strategically installed in tap-changer and busbar regions.The system was configured for sequential tripping:first isolating the tap-changer,then the main transformer breaker if the fault persisted.This approach minimized the impact of minor faults while ensuring complete protection for major events.The system was linked to the plant’s SCADA system for comprehensive fault event logging and historical analysis.

Within six months of operation,the system successfully mitigated three minor arc events without causing any transformer damage.Fault location identification time was reduced from four hours to just five minutes through the HMI event logs and detailed fault records.The proactive fault prevention capabilities extended the transformers’service life by an estimated two years,while the reduced maintenance requirements and improved reliability contributed to an estimated$500,000 in annual cost savings.The project demonstrated the ABB TVOC-2-240 1SFA664001R1001’s ability to protect critical assets in harsh industrial environments while delivering substantial operational and financial benefits.

Installation,Maintenance,and Full-Cycle Support

The ABB TVOC-2-240 1SFA664001R1001​is designed for straightforward installation with minimal setup time.The arc monitor arrives pre-assembled and requires connection to the power supply(100-250V DC or 100-240V AC),optical detectors,and trip contacts to circuit breakers.All wiring connections can be made on the front of the unit using the plug-in terminal block,which facilitates easy installation before mounting the monitor in the switchgear.The compact dimensions(210×230×80 mm)and DIN rail mounting capability allow for flexible installation in various control panel configurations.The system supports both wall mounting and DIN rail installation,providing adaptability to different switchgear designs and space constraints.

Routine maintenance for the ABB TVOC-2-240 1SFA664001R1001​is minimal and straightforward.The system features comprehensive self-diagnostics that continuously monitor its operational status,including power supply voltage,detector functionality,and communication interfaces.LED indicators provide real-time status information,allowing operators to quickly identify and address potential issues.The optical detectors require periodic visual inspection to ensure they are clean and properly positioned,while the arc monitor itself requires no regular calibration or adjustment.The system’s modular design allows for easy replacement of components if needed,with most parts being field-replaceable without specialized tools.The ABB TVOC-2-240 1SFA664001R1001​is designed for long-term reliability with an MTBF exceeding 100,000 hours,significantly reducing maintenance requirements compared to conventional protection systems.