Download print version
test report 7553
The approval
A test mark “DLG-APPROVED for individual criteria” is awarded for agricultural products which have successfully fulfilled a scope-reduced usability testing conducted by DLG according to independent and recognized evaluation criteria. The test is intended to highlight particular innovations and key criteria of
the test object. The test may contain criteria from the DLG test scope for overall tests, or focus on other value-determining characteristics and properties of the test subject. The minimum requirements, test conditions and procedures as well as the evaluation bases of the test
results will be specified in consultation with an expert group of DLG. They correspond to the recognized rules of technology, as well as scientific and agricultural knowledge and requirements. The successful testing is concluded with the publication of a test report, as well as the awarding of the test mark which is valid for
five years from the date of awarding.
The ammonia resistance test was performed as a laboratory test according to the patented DLG test standard. This test is intended to determine the suitability of equipment for animal living areas to withstand the impacts of animal environments. The cleaning distance test assesses the suitability for cleaning animal living areas. In the “Flicker-free” test - if neccessary also with different dimming levels – frequency and the modulation depth of a luminaire’s flicker is measured. Since the corresponding stressor does not apply, flicker-free light has a positive effect on animal health. Other critera have not been assessed.
Assessment in brief
The LED light ”Liteline IP66+ 1500” from Elektro Elco AB has successfully completed the DLG test for ammonia resistance, cleaning distance and flickerfree. According to this result, it can be assumed that these luminaires are resistant to the typical environmental conditions of animal living areas and that no accelerated reduction of the product lifetime will occur. In addition, the LED light was operated actively in the chamber for the entirety of the test. No product damage was observed here. Furthermore, a minimum cleaning distance of 10 cm was measured. In dimmed and undimmed operation, the LED luminaire meets and clearly exceeds the high DLG standard.
| DLG QUALITY PROFILE | Evaluation* |
|---|---|
| Ammonia resistance | ■■■■■ |
| Preservation of the luminous flux | ■■■■■ |
| Cleaning distance | ■■■■■ |
| Flicker free „Liteline IP66+ 1500 DALI“, dimmed | ■■■■■ |
| Flicker free „Liteline IP66+ 1500 DALI“, not dimmed | ■■■■■ |
* The DLG test framework provides the following options in its evaluation schemes:
■ ■ ■ or better = meets, exceeds or clearly exceeds the specified DLG standard, ■ ■ = meets the legal requirements for marketability, ■ = failed
The product
Technical data
Technical dataThe tested LED light “Liteline IP66+ 1500” is suitable for all areas of agriculture.
Table 2: Technical data (according to manufacturer)
| Liteline IP66+ | |||
|---|---|---|---|
| 1500 | 1500 DALI | ||
| Electrical connection | |||
| Voltage | 220-240 V AC | ||
| Frequency | 50-60 Hz | ||
| Rated input power | 55 W | 52 W | |
| Dimension | |||
| Length | 1.594 mm | ||
| Width | 76 mm | ||
| Height | 58 mm | ||
| Addition technical data | |||
| Housing material | PMMA (recycelt) | ||
| Material of end caps | RPC recycled material + 10 % glass fibre | ||
| Mounting material | stainless steel | ||
| Protection rating | IP66 | ||
| Color temperature (CCT) | 3.000 / 4.000 K | ||
| Rated luminous flux | 7.868 / 8.345 lm | 7.742 / 8.134 lm | |
| Luminous efficiency | 143 / 151 lm/W | 148 / 155 lm/W | |
| Light angle | 109° | ||
| Color rendering index (CRI) | > 80 | ||
| Rated service life | L80 100.000 h Ta 25 °C | ||
| dimmable | no | yes, DALI 2 |
The method
Resistance to ammonia
The ammonia resistance of the LED light “Liteline IP66+ 1500” was determined by a laboratory test with four single luminaires according to the patented DLG test standard for agricultural use. The laboratory test is designed to replicate the conditions of a usage period of about 10 years exposure to animal living areas.
The test was carried out in a climate chamber under the following climate conditions:
For assessing the ammonia resistance, each luminaire was examined visually, gravimetrically and the plastic parts additionally through measurement of the hardness (Shore D) before and after the climate testing.
The luminaires have additionally been following a cycle of operation predefined by DLG (3 hours on, 1 hour off) in order to evaluate any thermal impacts caused by switch-on and -off procedures during ammonia fumigation. Furthermore the luminous flux was measured according to DIN EN 13032 before and after the fumigation in order to get additional information regarding the aging process.
In order to avoid overheating (> 70 °C), the luminaires could be operated at a reduced power level during the testing period.
Cleaning distance
During test bench examinations of the mechanical resistance to high-pressure cleaners, the minimum cleaning distance was determined. The minimum cleaning distance is defined as the distance between nozzle and surface when no damages can be observed at the housing surface. The test was conducted under the conditions presented in table 3.
Table 3: Test conditions cleaning distance
| Line pressure | ~150 bar |
| Water | cold, approx. 1,000 l/h, no detergents |
| Nozzle type | Flat spray nozzle, 25° |
| Exposition time | 1 minute |
| Distance | 200 mm, 150 mm, 100 mm, 50 mm |
| Ambient temperature | 10 … 20 °C |
Flicker free
The frequency and modulation depth of the flicker of two test samples for each type of luminaire were measured and assessed at full power. If the luminaire provided is dimmable and dimming is also recommended for practical use, the above tests were also carried ot at 50 % and 10 % of the nominal power.
Detailed account of the test results
Resistance to ammonia
Visual test
The comparative visual examination after the ammonia exposure has shown minor discolorations inside the luminare.
During the test, the luminaire appeared to be sufficiently gas-tight. Nevertheless it cannot be ruled out, that a limited ammount of ammonium compounds could enter the luminaire housing. Again, no negative impact on the luminaire performance needs to be expected.
The defects are rated as insignificant. The examination of the manufacturer’s mounting parts didn’t also show any defects.
The active test samples were also dimmed during the test phase. The dimming had no obvious effect on the test result.
Gravimetric test
Weight comparisions before and after the ammonia fumigation have not shown any measurable increases or decreases in weight. All changes determined were within the measurement uncertainty.
Hardness test
During the hardness test (Shore D) no measurable changes were observed. All determined changes were within the measurement incertainty.
Cleaning distance
Even at a cleaning distance of only 10 cm, no damages to the luminaire could be observed. At no time a water ingress into the luminaires was noticed. In order to avoid damage to the luminaires during cleaning reliably, according to the manufacturer’s specifications a minimum cleaning distance of 10 cm should always be ensured.
Functional test
No defects were observed. All luminaires worked after the conducted tests.
Preservation of the luminous flux
After completion of the test the luminaire still had a luminous flux of 92.8 %.
Flicker free
The frequency of the DALI version was 100 Hz in the undimmed state (modulation depth 0.6 %) and 836 Hz (0.92 %) in the dimmed state.
The results show that the LED light “Liteline IP66+ 1500” in the version with and without dimming fullfills the testing requirements for ammonia resistance, cleaning distance and flicker free and thus receives the test mark DLG Approved. It can be expected that the luminaire is resistant to ammonical air in animal living areas and that no accelerated reduction of the product lifetime occurs.
The LED light “Liteline IP66+ 1500” was operated both passively and actively during the ammonia fumigation in the test chamber and passed both tests successfully.
The luminaire achieved a cleaning distance of 10 cm without any visible damage.
when dimmed and undimmed, the luminaire achieved the best possible rating for the DLG requirement for flicker-free lighting.
Manufacturer and applicant
Applicant and Sales
Elektro Elco AB
Tallvägen 5
56435 Bankeryd
Sweden
Contact:
Phone +46 76 5346078
Https://www.hidealite.com
info@elco.se
Manufacturer
AMETALINE LIGHTING CO., LTD
5th Heman Road, Jidongyi, Xialolan Zhongshan
China
Testing agency
DLG TestService GmbH, Gross-Umstadt location, Germany
The tests are conducted on behalf of DLG e.V.
DLG test framework
DLG Approved Test “Lighting systems in animal houses” (current as of 06/2025)
Department
Farm Inputs
Division head
Dr. Michael Eise
Test engineer(s)
Dipl.-Ing. (FH) Tommy Pfeifer *
Photometric laboratory
Photometrik GmbH, Einsteinstraße 24
64859 Eppertshausen, Germany
*author