70
70° circular
Symmetric
Frosted
Drawn from the beam setting, not measured
Commercial · Linear
Premium T8 LED Tube - Fluorescent Tube Replacement
High-Ouput T8 LED Tubes
- 11W to 30W
- 1,540lm to 4,470lm
- 140 to 152lm/W
- IP20
- 5 Years warranty
Order code HES-11A-850-120-D1-RT
No lumen is published for that combination.
11W nominal. 588 mm long × Ø26 mm, 0.155 kg. Driver Letron internal (D1); XY Power external (D2); Inventronics external (D3). CE, RoHS, TUV, SAA & VOE.
- 152 lm/W
Kellwood's Heston Series range LED T8 tubes were developed as a multi-purpose solution for existing fluorescent tube replacement. Ultra-high efficacy chips produce more light and less heat than competitor products allowing for lower running costs, brighter fixtures and longer lifetimes.
- Fixed and rotatable (locking) end caps offering installation flexibility
- Various LED chip orientations are available to offer 70°, 120°, 220° & 2 x 120° beam angles
- Multi-fin aluminium heat sinks provide superior heat management
- High output LED chips developed for high lux applications
| Series code | HES |
|---|---|
| Nominal power | 11W to 30W |
| Efficacy | 140 to 152lm/W @ CRI>80, 4000K |
| Lumen output | 1,540lm to 4,470lm @ CRI>80, 4000K |
| Lumen maintenance | L70B50 ≥50,000 hours @ 25°C (TM21 reported) |
| Certification | CE, RoHS, TUV, SAA & VOE |
| Warranty | 5 Years |
Sheet lumen at CRI>80, 4000K, with no modification: 11A 1,540 lm, 15B 2,175 lm, 18C 2,736 lm, 23D 3,496 lm, 30D 4,470 lm, 30E 4,440 lm. Another CRI, or a modification, still prints the order code and leaves the lumen blank. 5 measured files give 140.4 to 152.6 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
120
120° circular
Symmetric
Frosted
Measured, HES-10A-840-120-FR (taken as HES-11A-840-120, to confirm)
220
220° circular
Symmetric
Frosted
Drawn from the beam setting, not measured
D120
DOUBLE 120° OPTIC
Asymmetric
Frosted
Drawn from the beam setting, not measured
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
A variety of lengths, wattages and beam angles make the Heston Series well suited for a wide range of retrofit applications whilst optional locking rotatable end caps simplify installation. A range of CCT and optional CRI 95 ensure the Heston series can be used in both industrial and commercial applications.
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.
Workshops
Kellwood's expert workshop lighting solutions meet CIBSE and HSE guidance. Our systems enhance safety, accuracy and efficiency in all types of workshops.
Factories
Designed to meet CIBSE and HSE standards, our lighting systems improve safety, visibility and compliance across manufacturing and industrial environments.
Warehouses
Vast range of LED warehouse high bay lights, low bay lights and other warehouse lighting fixtures, including lights suitable for commercial storage spaces.
- Corridors
GALLERY
Showing 1-3 of 3
SPECIFICATIONS
| Chip Brand, Model, & Size | Jufei San’an 2835 |
|---|---|
| Chip Efficacy @ CRI>80, 5000K CCT | 190lm/W @ 60mA, 25°C |
| Light Emission | Direct |
| CCT | 4000K, (3000K, 5000K, 6500K) |
| CRI | ≥80Ra, (≥90Ra optional) |
| SDCM | <5, (<3 optional) |
| Diffusers | Frosted, (Clear optional) |
| Symmetric Light Distribution | 70°, 120°, 220° circular |
| Double optic (D120) | 2 x 120° |
| Typical UGR | <24 |
| System Operating Power | 11W, 15W, 18W, 23W, 30W |
|---|---|
| Driver Brand | Letron internal non-dim (D1); external XY Power 1-10V (D2) or Inventronics DALI (D3) |
| Input Voltage | 220-240VAC |
| Input Frequency | 50-60Hz |
| Power Factor | >0.95 |
| THD | <10% (220-240VAC), <20% (100-277VAC) |
| Insulation Class | Class II |
| IP Rating | IP20 |
|---|---|
| IK Rating | IK06 |
| Ambient Usage Tolerance | -20°C to 40°C |
| Ambient Storage Tolerance | -40°C to 85°C |
| Ambient Humidity Tolerance | 10% to 85% RH |
| Length x diameter (mm) | 2ft 588 x 26; 3ft 894 x 26; 4ft 1196 x 26; 5ft 1498 x 26; 6ft 1763 x 26 |
|---|---|
| Fixture Weight | HES-11A: 0.155kg; HES-15B: 0.217kg; HES-18C: 0.271kg; HES-23D: 0.0342kg; HES-30D: 0.0342kg; HES-30E: 0.386kg |
| Fixture Primary Material(s) | Aluminium |
| Fixture Finish | Anodised |
| Lens(es) Materials | UV Stabilised Polycarbonate |
| Dimming Options | 1-10V, DALI |
|---|---|
| Compatible intelligent lighting systems | Wireless Controls and Monitoring |
| Mounting Styles | Fixed end caps (FI), rotatable locking end caps (RT) |
|---|
| 11A | 11W nominal. 588 mm long × Ø26 mm, 0.155 kg. Driver Letron internal (D1); XY Power external (D2); Inventronics external (D3). CE, RoHS, TUV, SAA & VOE. |
|---|---|
| 15B | 15W nominal. 894 mm long × Ø26 mm, 0.217 kg. Driver Letron internal (D1); XY Power external (D2); Inventronics external (D3). CE, RoHS, TUV, SAA & VOE. |
| 18C | 18W nominal. 1196 mm long × Ø26 mm, 0.271 kg. Driver Letron internal (D1); XY Power external (D2); Inventronics external (D3). CE, RoHS, TUV, SAA & VOE. |
| 23D | 23W nominal. 1498 mm long × Ø26 mm, 0.0342 kg (as printed). Driver Letron internal (D1); XY Power external (D2); Inventronics external (D3). CE, RoHS, TUV, SAA & VOE. |
| 30D | 30W nominal. 1498 mm long × Ø26 mm, 0.0342 kg (as printed). Driver Letron internal (D1); XY Power external (D2); Inventronics external (D3). CE, RoHS, TUV, SAA & VOE. |
| 30E | 30W nominal. 1763 mm long × Ø26 mm, 0.386 kg. Driver Letron internal (D1); XY Power external (D2); Inventronics external (D3). CE, RoHS, TUV, SAA & VOE. |
Fits standard T8 fittings. D1 has an isolated internal driver; dimming versions use external 1-10V or DALI drivers.
The tube is frosted as standard; CL fits a clear cover.
If more than one modification is required, separate each modification with a hyphen at the end of the product code.
