Name: TVOC-2-240 1SFA664001R1001 TVOC-2-240-C IN STOCK
Availability: InStock

Description

1. System Overview

The ABB TVOC-2-240-C is a critical component of the Arc Guard System, functioning as an arc fault protection relay designed to mitigate arc flash hazards in industrial power distribution systems. Key specifications include:

Response Time: <1ms electrical signal transmission to breakers via fast IGBT contacts

Detector Capacity: 10 native optical detector inputs, expandable to 30 with 2 extension units

Power Supply: 100–250V DC or 100–240V AC (50/60Hz)

HMI Functionality: External door-mounted human-machine interface for real-time status monitoring

Accessories: Compatible with current sensing units, optical cables, and cable straps for full switchgear integration

2. Typical Application Cases

2.1 Medium-Voltage Switchgear in Power Plants

Scenario: A 600MW coal-fired power plant required enhanced protection for its 11kV switchgear cabinets, where arc faults could cause equipment damage and personnel injuries.

Implementation:

8 TVOC-2-240-C units installed across 4 switchgear bays, each connected to 8 optical detectors (custom-length for cabinet dimensions)

Integrated with plant’s existing circuit breakers to enable zone-selective tripping

HMI panels mounted on cabinet doors for local fault diagnostics

Outcome:

Arc fault detection time reduced from 50ms (legacy system) to <1ms

Zero unplanned outages in 18 months of operation

Compliance with IEC 62271-200 arc flash protection standards

2.2 Chemical Industry Explosion-Proof Zones

Scenario: A petrochemical refinery needed arc protection for 480V motor control centers (MCCs) in Zone 2 hazardous areas, where flammable vapors increased arc flash risks.

Implementation:

TVOC-2-240-C units fitted with intrinsically safe optical detectors

Current sensing units added to distinguish arc faults from normal load currents

Interfaced with the refinery’s DCS via Modbus RTU protocol for remote monitoring

Outcome:

Prevented 2 potential arc-induced fires by isolating faults within 0.8ms

Reduced maintenance downtime by 35% through HMI-enabled predictive diagnostics

Met NFPA 70E requirements for electrical safety in hazardous locations

2.3 Metallurgical Plant Transformers

Scenario: A steel mill sought to protect 33kV/11kV transformers from arc faults in tap-changer compartments, which had caused $200k in damage in a 2023 incident.

Implementation:

1 TVOC-2-240-C unit per transformer, paired with 6 fiber-optic detectors (installed in tap-changer and busbar regions)

Configured for sequential tripping: first isolating the tap-changer, then the main transformer breaker

Linked to the plant’s SCADA system for fault event logging

Outcome:

Successfully mitigated 3 minor arc events in 6 months, with no transformer damage

Fault location identification time reduced from 4 hours to 5 minutes via HMI event logs

Extended transformer service life by 2+ years through proactive fault prevention

3. Cross-Industry Benefits

Personnel Safety: Eliminates arc flash exposure by extinguishing arcs before energy levels exceed 10kA

Equipment Protection: Reduces breaker and switchgear replacement costs by 60–75%

Flexibility: Adaptable to low/medium voltage systems (240V–33kV) and custom switchgear designs

Reliability: 99.98% operational availability in harsh industrial environments (temperature range: -20°C to +70°C)

TVOC-2-240 1SFA664001R1001 TVOC-2-240-C PDF

TVOC-2-240 1SFA664001R1001 TVOC-2-240-C

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