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Scan to visit The preheat start uses a combination filament/cathode at each end of the lamp in conjunction with a mechanical or automatic switch that initially connect the filaments in series with the ballast and thereby preheat the filaments prior to striking the arc.it is a good way to protect the circuit.
Detail specification.
| Item No. | Tube diameter (mm) | BF-BF (mm) | Arc length (mm) | Power (W) | Current (mA) | Voltage at 50/60Hz | Uv outp μW/2 W | Rated lifetime(h) | |
| Preheat Start UV Lamps | |||||||||
| GPH212T5L | 15 | 212 | 132 | 10 | 425 | 30 | 26 | 2.7 | 13,000 |
| GPH212T5VH | 15 | 212 | 132 | 10 | 425 | 30 | 26 | 2.7 | 13,000 |
| GPH287T5L | 15 | 287 | 207 | 14 | 425 | 41 | 40 | 4 | 13,000 |
| GPH287T5VH | 15 | 287 | 207 | 14 | 425 | 41 | 40 | 4 | 13,000 |
| GPH303T5L | 15 | 303 | 223 | 15 | 425 | 43 | 43 | 4.3 | 13,000 |
| GPH303T5VH | 15 | 303 | 223 | 15 | 425 | 43 | 43 | 4.3 | 13,000 |
| GPH357T5L | 15 | 357 | 277 | 17 | 425 | 51 | 57 | 5.7 | 13,000 |
| GPH357T5VH | 15 | 357 | 277 | 17 | 425 | 51 | 57 | 5.7 | 13,000 |
| GPH436T5L | 15 | 436 | 356 | 21 | 425 | 62 | 72 | 7.3 | 13,000 |
| GPH436T5VH | 15 | 436 | 356 | 21 | 425 | 62 | 72 | 7.3 | 13,000 |
| GPH793T5L | 15 | 793 | 713 | 38 | 425 | 112 | 125 | 13.5 | 13,000 |
| GPH793T5VH | 15 | 793 | 713 | 38 | 425 | 112 | 125 | 13.5 | 13,000 |
| GPH843T5L | 15 | 843 | 762 | 41 | 425 | 120 | 136 | 15 | 13,000 |
| GPH843T5VH | 15 | 843 | 762 | 41 | 425 | 120 | 136 | 15 | 13,000 |
| GPH1148T5L | 15 | 1,148 | 1,067 | 55 | 425 | 165 | 174 | 21 | 13,000 |
| GPH1148T5VH | 15 | 1,148 | 1,067 | 55 | 425 | 165 | 174 | 21 | 13,000 |
| GPH1554T5L | 15 | 1,554 | 1,474 | 75 | 425 | 220 | 223 | 31 | 13,000 |
| GPH1554T5VH | 15 | 1,554 | 1,474 | 75 | 425 | 220 | 223 | 31 | 13,000 |
| GPH1630T5L | 15 | 1,630 | 1,550 | 79 | 425 | 231 | 228 | 32.5 | 13,000 |
| GPH1630T5VH | 15 | 1,630 | 1,550 | 79 | 425 | 231 | 228 | 32.5 | 13,000 |
Product Categories : Hot Cathode Quartz UV Lamp > Preheat Start UV Lamp
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