# Difference between revisions of "Susan Lamp PRO"

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400 Watt Metal Halide equivalent replacement, 234 LED Array @ 156 Watts | 400 Watt Metal Halide equivalent replacement, 234 LED Array @ 156 Watts | ||

− | Teh "Susan" Lamp series developed by Lunera launched | + | Teh "Susan" Lamp series developed by Lunera launched their first generation lights around 2014. These lights bost a 50%+ efficency improvement over Metal Halide with an output of around 15,000 lumens. |

In particular the focus here is on the '''SN-VP-E39-400W-4000-G1''', there are also "250W" and "175W" lights in the first gen series. | In particular the focus here is on the '''SN-VP-E39-400W-4000-G1''', there are also "250W" and "175W" lights in the first gen series. | ||

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== Power Profiling == | == Power Profiling == | ||

− | The following is from a power test of the lamp using a large high current 120VAC rheostat to slowly ramp up the voltage and evaluate the current draw. | + | The following is from a power test of the lamp using a large high current 120VAC rheostat to slowly ramp up the voltage and evaluate the current draw. Note that LEDs respond somewhat exponentially to voltage adjustments, and a current limited source is the proper way to power these, however this provides valuable information for the design parameters of such an application. |

− | Orange meter is total | + | Orange meter is total Current into Schottky Diodes to LEDs |

− | Yellow meter is RMS AC Voltage to LEDs | + | Yellow meter is RMS AC Voltage into Schottky Diodes to LEDs |

Blue meter is total Wattage INCLUDING losses from rheostat | Blue meter is total Wattage INCLUDING losses from rheostat | ||

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Actually LED wattage consumption can be calculated by Amps * Volts | Actually LED wattage consumption can be calculated by Amps * Volts | ||

− | Note that volts shown are AC, and feed into a Diode bridge, which generates a 4 Volt drop and rectifies to a DC voltage. So the actual power being consumed by the LEDs is (AC Voltage - 4) * Amps | + | Note that volts shown are AC, and feed into a Diode bridge, which generates a 4 Volt drop and rectifies to a DC voltage. So the actual power being consumed by the LEDs is:<br/> |

+ | '''(AC Voltage - 4) * Amps = Watts''' | ||

− | Measured AC Voltage & Current | + | '''Measured AC Voltage & Current''' |

<pre> | <pre> | ||

Test Volts Amps Watts | Test Volts Amps Watts | ||

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− | Calculated DC Voltage & Current | + | '''Calculated DC Voltage & Current''' |

<pre> | <pre> | ||

Test Volts Amps Watts | Test Volts Amps Watts |

## Latest revision as of 18:28, 15 June 2017

400 Watt Metal Halide equivalent replacement, 234 LED Array @ 156 Watts

Teh "Susan" Lamp series developed by Lunera launched their first generation lights around 2014. These lights bost a 50%+ efficency improvement over Metal Halide with an output of around 15,000 lumens.

In particular the focus here is on the **SN-VP-E39-400W-4000-G1**, there are also "250W" and "175W" lights in the first gen series.

A small lot of these was aquired at the Electronics Flea Market for $10 each, these retailed for over $200 each, and can be had on ebay for under $100, there are also second generation and newer units available.

There are 234 medium power 4000K 3030 LEDs arranged in 26 parallel sets, each consisting of 9 LEDs in series. There are 4 Switch-mode Schottky Power Rectifiers that are designed to be connected to a magnetic ballast for Metal Hallide bulbs.

## Description[edit]

Outshine the competition using PLT SN-VP-E39-400W-4000-G1 LED high bay retrofit lamps in your large retail locations. These 400-watt equal metal halide replacements provide superior light quality and huge energy savings without the cost of converting your current fixtures or ballasts. The innovative LED is easy to install, simply remove the current metal halide bulb, screw in the new lamp, attach the lamp safety lanyard to a vent hole near the base of fixture, and enjoy the beauty of energy-efficient LED lighting!

- Applicable locations include gymnasiums, warehouses, large retail stores, and high ceiling downlight
- Runs on the same pulse- and probe-start magnetic ballasts as traditional metal halide lamps
- Use in dry, interior conditions only; not for condensing humidities or damp locations
- Lasts 5 times longer than metal halide lamps; 50,000 life hours
- Works as a vertical downlight in open or vented fixtures
- Has a 4000K, cool white illumination
- Compatible with motion sensors
- CRI of above 70

## Specifications[edit]

Brand: PLT MPN (Part No.): SN-VP-E39-400W-4000-G1 UL Listed: Indoor CRI: 70 Color: Cool White Color Temp.: 4000 Kelvin Bulb Type: HID Retrofit Life Hours: 50,000 Wattage: 156 Watt Lumens: 15000 Ballast Type: Magnetic/Metal Halide Base Type: Mogul (E39)/Mogul (EX39) M.H. Equal: 400 Watt Operating Temp: 125°F Burn Position: Vertical Start Method: Probe Start/Pulse Start Length: 9.41 in. Diameter: 8.27 in. Warranty: 5 Years

Source: *1000bulbs.com*

- FAQ
- Schottky Barrier Rectifier (5 Amp, 100 Volt)

## Power Profiling[edit]

The following is from a power test of the lamp using a large high current 120VAC rheostat to slowly ramp up the voltage and evaluate the current draw. Note that LEDs respond somewhat exponentially to voltage adjustments, and a current limited source is the proper way to power these, however this provides valuable information for the design parameters of such an application.

Orange meter is total Current into Schottky Diodes to LEDs

Yellow meter is RMS AC Voltage into Schottky Diodes to LEDs

Blue meter is total Wattage INCLUDING losses from rheostat

Actually LED wattage consumption can be calculated by Amps * Volts

Note that volts shown are AC, and feed into a Diode bridge, which generates a 4 Volt drop and rectifies to a DC voltage. So the actual power being consumed by the LEDs is:

(AC Voltage - 4) * Amps = Watts

**Measured AC Voltage & Current**

Test Volts Amps Watts ------------------------ #1 42 1 55 #2 44 1.5 83 #3 45.4 2 107

**Calculated DC Voltage & Current**

Test Volts Amps Watts ------------------------ #1 38 1 38 #2 40 1.5 60 #3 41.4 2 83