Product Overview
GE 29947 DRS 1000W 120V Projection Lamp - P28s Prefocus Base 3325K T-20
Professional high-intensity projection bulb engineered for legacy and specialty optical systems. The GE DRS (ANSI) delivers 28,500 initial lumens at 1000W / 120V with a warm 3325K color temperature for film, stage, and overhead projection. Features P28s medium prefocus base and C-13D tungsten filament.
Specifications
- ANSI Code
- DRS
- GE Product Number
- 29947
- Wattage / Voltage
- 1000W • 120V AC (8.33A)
- Lumen Output
- 28,500 lm (initial) / 28,000 lm (rated)
- Candlepower
- 2,300 (approximate)
- Color Temperature
- 3325K (warm white)
- Color Rendering Index (CRI)
- 100 (tungsten - perfect color rendering)
- Base
- P28s medium prefocus (flanged)
- Filament
- C-13D tungsten
- Bulb Shape
- T-20 (tubular, 2.5" diameter)
- Dimensions
- 5.75″ L × 2.5″ Dia (146 × 63.5 mm)
- Light Center Length (LCL)
- 2.188″ (55.6mm)
- Rated Life
- 25 hours (typical projection service) / 50 hours (optimal conditions)
- Burn Position
- Base Down (within 30 degrees of vertical)
Applications
- Commercial film and slide projectors
- Stage and theatre lighting
- Overhead projectors (3M, Beseler, etc.)
- Medical and industrial optical equipment
- Simulation and training projectors
- Opaque projectors and transparency viewers
Cross Reference / Alternate Part Numbers
This lamp is also known as:
- Philips: 6185C, A1-58, 7401C
- Osram: 7401C/57.7891E, 58.8997E
- Ushio: 1000218
- Eiko: 01620
- StandardPro: 29947
- General Electric: 1M/T20/MP
- Mazda: 8-E-87
- Thorn: A1-58
- Atlas: A1-58
Compatible Equipment
Used in projectors by: 3M (Thermo-Fax), American Optical, Beseler, Buhl, DeJur, Elmo, Holmes, Kalart Victor, Keystone, and many others.
Safety & Handling
- Very hot surface temperature — allow full cool-down before handling
- Use heat-resistant gloves; avoid touching glass envelope with bare hands
- Operate in rated, ventilated fixtures; disconnect power before replacement
- Base down operation only (within 30° of vertical)
- High degree of forced cooling required for proper operation
Compliance
- Meets applicable ANSI dimensional & performance designation (DRS)
- UL / CE (fixture dependent)
Note: 25-hour life is typical for high-output projection service; 50 hours achievable under optimal conditions. Actual life varies with fixture, duty cycle, voltage, and cooling. Specs subject to change.
