Sylvania 54570 FEL CP/77

SYLVANIA 54570 | FEL CP/77 1000W 120V Quartz-Halogen Stage, Studio & Theater (SSTV) Lamp

The Sylvania 54570 (ANSI: FEL / LIF: CP/77) is a commercial-grade, high-intensity **1000W quartz-halogen specialty lamp** engineered exclusively for precision theatrical stage production, broadcast television networks, motion picture cinematography, and touring entertainment rigs. Operating on standard **120V line voltage**, this heavy-duty light engine features a robust **G9.5 medium bipin base** paired with an advanced **C-13D high-density filament structure** to provide exceptional beam control and structural resistance to mechanical shock. Utilizing high-purity halogen regenerative gas chemistry to deliver an elite **100 CRI** full-spectrum rendering profile, it outputs an industry-standard **3200K tungsten-balanced** color temperature. Engineered for universal burning orientations inside professional fan-cooled luminaires, this premium photo-optic lamp ensures consistent, non-fading optical brightness across its specialized **300-hour rated service life**.

Precision C-13D Filament Architecture and Halogen Chromaticity Stability

Sylvania FEL photo-optic lamps resolve the stringent calibration demands of high-definition broadcast sensors and theatrical optics by incorporating a precision-aligned **C-13D planar filament layout**. Operating at peak optical efficiency, the internal quartz-halogen matrix triggers a continuous chemical cycle that isolates vaporized tungsten and re-deposits it onto the core coil grid. This continuous regeneration prevents the inner clear quartz walls from solarizing or blackening, ensuring that color temperature and luminous flux maintain absolute chromaticity stability throughout the lamp's lifecycle. The universal burning configuration permits fluid tracking, panning, and tilting movements inside high-angle overhead grid slots without risking premature structural stress on the internal supports.

• Tungsten Studio Calibration (3200K): Emits a steady, continuous full-spectrum beam calibrated specifically for professional digital cinema and broadcast cameras set to manual tungsten white balance.
• True-to-Life Color Fidelity (100 CRI): Delivers absolute color rendering accuracy, preventing spectral shifting on fabrics, human skin tones, painted scenery, and broadcast backgrounds.
• Heavy-Duty G9.5 Bipin Connection: Solid metal contact pins ensure a high-resistance electrical fit inside specialized stage sockets, reducing terminal arching and localized contact oxidation.
• Universal Burn Orientation: Built to strike safely and operate continuously at any physical angle, enabling seamless integration into complex architectural spots or ellipsoidal reflector spotlights.

Comprehensive Technical Specifications

• Brand Name: Sylvania
• Product Family / Series: Photo-Optic Specialty Halogen / SSTV (Stage, Studio & Television) Series
• Ordering Product Code / NAED: 54570
• ANSI Standard Code Designation: FEL
• LIF Standard Code Designation: CP/77
• Technology Class: High-Performance Quartz-Halogen
• Bulb Shape Profile: T6 Clear Compact Quartz Capsule
• Nominal System Wattage: 1000W
• Nominal Operating Voltage: 120V Line Current
• Base Type Configuration: G9.5 (Medium Bipin with Solid Connector Contacts)
• Filament Mechanical Structure: C-13D Coiled Planar Configuration
• Color Temperature: 3200K (Tungsten Studio Balanced Warm Light Field)
• Color Rendering Index (CRI): 100 (Absolute Continuous Full-Spectrum Chromaticity)
• Average Rated Service Life: 300 Hours
• Burning Position Protocol: Universal ($360^{\circ}$ Full-Rotation Capability)
• Light Center Length (LCL): 2.37 Inches (60.3 mm)
• Maximum Overall Length (MOL): 4.13 Inches (105 mm)
• Bulb Envelope Diameter (DIA): 0.75 Inches (19 mm)
• Fixture Requirements: Approved For Enclosed, Shielded, Fan-Cooled Stage & Studio Equipment Only
• Environmental Compliance: RoHS Compliant, Lead-Free Manufacturing Foundations

System Integration, Fixture Matching & Operational Safety

• Mandatory Enclosed Equipment Notice: Due to extremely high operating pressures and intense thermal output, this 1000W halogen cell **must strictly be operated within enclosed lighting fixtures equipped with protective safety lenses**. Host luminaires must feature adequate ventilation channels or forced fan cooling to manage rapid heat extraction and prevent structural fixture housing deformation.
• Strict Quartz Glass Handling Protocol: **Never touch the clear quartz envelope with bare skin or oily fingers.** The natural oils from human hands leave behind microscopic organic layers that act as thermal insulators under intense operation. These concentrated "hot spots" induce early glass crystallization (devitrification), micro-fracturing, and catastrophic envelope breakdown. Always handle the module using the provided protective foam shell, clean lint-free rigging gloves, or a dry microfiber wipe. If contact accidentally happens, scrub the quartz sleeve thoroughly with denatured alcohol and let it air-dry prior to striking the arc.
• Electrical System Restraints: This specialty lighting engine is engineered precisely for standard **120V electrical paths**. Connecting this high-wattage module to incorrect industrial voltages (such as 208V, 277V, or unregulated low-voltage lines) will trigger an immediate filament explosion or rapid structural burn-out. Ensure your dimmer packs or fixture power rails match the 120V limits before turning on power feeds.
• Cooling & Relamping Routine Maintenance: Operating at intense temperatures, this lamp generates extreme residual heat. Always pull the master breaker or disconnect the safety cable from the grid path and **allow the luminaire to cool down for at least 15 minutes** before removing latch assemblies or servicing the G9.5 socket terminals.

Recommended Professional & Commercial Applications

• Theatrical & Stage Lighting Instruments: Highly optimized for use in professional ellipsoidal reflector spotlights (LEKOs), high-output Fresnel focus washes, and architectural stage followspots.
• Television Broadcast & Soundstage Facilities: Perfect fill, key, and background lighting engine for commercial broadcast newsrooms, interview studios, and digital film production stages.
• Live Entertainment & Concert Rigs: Reliable overhead truss lighting choice for arena concerts, live performance theater events, and touring entertainment spectacles.