FR
FROSTED DIFFUSER
Asymmetric
Frosted
Measured, BLA-28B-830 (taken as BLA-28B-830-FR, to confirm)
Commercial · Linear
Direct OR Indirect Linear LED Lighting
Direct-Indirect Light
- 28W to 75W
- 2,688lm to 6,600lm
- 88lm/W to 97lm/W
- IP40
- 5 Years warranty
Order code BLA-56D-840-FR-D1-WH-IN-3C
No lumen is published for that combination.
Measured file BLA-56D-840 (taken as BLA-56D-840-FR, to confirm): 5,340 lm at 55.3 W (96.6 lm/W).
56W nominal. 1,207 × 110 × 70 mm, 2.21 kg (excludes bracketry). Driver Osram Optotronic Fit D LT2 L (D1). CE, RoHS.
- 97 lm/W
Kellwood's Blackwell Series is a direct-indirect linear lighting system. The 70% downwards and 30% upwards light distribution helps to reduce glare and meet the latest LG05 and LG07 recommendations. This product can be used as standalone linear fittings or can linked for a seamless 'infinity' effect.
Important Note: MOQs may apply - typically >100pcs - please contact our office to discuss your requirements
- Osram Drivers
- Seamless "Inifinity" Effect
- 70% Downwards & 30% Upwards Light
- 2ft, 4ft & 5ft Luminaires
- Fast "Plug & Play" Installation
| Series code | BLA |
|---|---|
| Nominal power | 28W to 75W |
| Efficacy | 88lm/W to 97lm/W @ CRI>80, 3000K CCT |
| Lumen output | 2,688lm to 6,600lm |
| Lumen maintenance | L70B50 ≥50,000 hours (TM21 reported) |
| Certification | CE, RoHS |
| Warranty | 5 Years |
Sheet lumen at CRI>80, 3000K, with no modification: 28B 2,688 lm, 56D 5,432 lm, 75A 6,600 lm. Another CRI, or a modification, still prints the order code and leaves the lumen blank. 6 measured files give 83.6 to 96.6 lm/W; the measured figure for the chosen optic shows under the code.
DOWNLOADS
Questions for Adam list what the sheet and the measured files do not settle yet.
LIGHT DISTRIBUTION OPTIONS
Polar: solid green C0–C180, dashed blue C90–C270, dotted amber the plane through the brightest direction when it lies between them; rings at 25% steps of the peak. Isolux: the footprint on the floor with the fitting aimed straight down, contours at 50%, 25% and 10% of the brightest point, grid in mounting heights (H). Both are drawn from the first measured file for that optic.
DESIGN FEATURES
Linear lights designed for PURPOSE
The Blackwell Series is available in a black, silver or white housing. Supplied with Osram drivers and Epistar LED chips as standard (available in three colour temperatures ranging from 3000K to 6000K) it can also be paired with on/off microwave sensors. The product's styling, while combined with upward lighting, offers a more modern architectural impression than conventional 'downwards only' linear illumination.
TYPICAL APPLICATIONS
Offices
We offer a selection of office lighting, LED Office Lighting includes a choice of LED ceiling lights, ceiling panel lights, linear fittings and downlights.
Retail
Based in the UK, with global distribution, we offer a superb choice of stylish and efficient LED lights for shops, shopping malls and shopping centres.
- Schools & Universities
- Laboratories
- Libraries
GALLERY
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SPECIFICATIONS
| Chip Brand, Model, & Size | Epistar 2835 |
|---|---|
| Light Emission | Direct and indirect: 70% up, 30% down (features page) |
| CCT | 3000K, (4000K, 5000K optional) |
| CRI | ≥80 |
| Diffusers | Frosted |
| Symmetric Light Distribution | 110° |
| System Operating Power | BLA-28B: 28W; BLA-56D: 56W; BLA-75A: 75W |
|---|---|
| Driver Brand | Osram |
| Driver Model | Optotronic Fit D LT2 L |
| System Power Factor | >0.95 |
| Typical Driver Lifetime | 100,000 hours @ Tc 65°C |
| Input Voltage | 220-240VAC |
| Input Frequency | 50-60Hz |
| Power Factor | >0.9 |
| THD | <10% (220-240VAC) |
| Insulation Class | Class I |
| IP Rating | IP40 |
|---|---|
| Ambient Usage Tolerance | -20°C to 40°C |
| Ambient Storage Tolerance | -30°C to 50°C |
| Ambient Humidity Tolerance | 20% to 80% RH |
| Product Dimensions: LxWxH (mm) | BLA-28B: 607 x 110 x 70; BLA-56D: 1207 x 110 x 70; BLA-75A: 1507 x 110 x 70 |
|---|---|
| Fixture Weight | BLA-28B: 1.22kg; BLA-56D: 2.21kg; BLA-75A: 2.58kg (excludes bracketry) |
| Fixture Primary Material(s) | 6063 Aluminium Alloy |
| Fixture Finish | Anodised-Painted |
| Lens(es) Materials | UV Stabilised PMMA |
| Dimming Options | DALI |
|---|---|
| Compatible intelligent lighting systems | Wireless Controls and Monitoring |
| Mounting Styles | Wall Mount, Cable Suspension |
|---|---|
| Miscellaneous Accessories | In-Line Connector |
| Available Product Colours | White, Black, Silver (WH, BK, SI); custom subject to MOQ |
Accessories (ordered separately) All accessories
| 28B | 28W nominal. 607 × 110 × 70 mm, 1.22 kg (excludes bracketry). Driver Osram Optotronic Fit D LT2 L (D1). CE, RoHS. |
|---|---|
| 56D | 56W nominal. 1,207 × 110 × 70 mm, 2.21 kg (excludes bracketry). Driver Osram Optotronic Fit D LT2 L (D1). CE, RoHS. |
| 75A | 75W nominal. 1,507 × 110 × 70 mm, 2.58 kg (excludes bracketry). Driver Osram Optotronic Fit D LT2 L (D1). CE, RoHS. |
Footnote 1: the maximum continuous connection for one run is 550W.
Footnote 2: runs must be ordered with the same core compatibility as the VAC input.
Footnote 3: luminaires with DALI drivers must be ordered as individual lights (IN).
Electrical parameters are for D1 drivers unless otherwise stated. Fixture weights exclude bracketry; see the Packaging Weights & Dimensions data sheet for bracketry and accessory weights.
A run is ordered as one start (ST), mid-runs (MI) and one end (EN): for example BLA-56D-840-FR-D1-WH-ST-3C, three of BLA-56D-840-FR-D1-WH-MI-3C, then BLA-28B-840-FR-D1-WH-EN-3C.
