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Test report 7458
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 recognised 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 recognised 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 ‘Resistance to ammonia’ test was conducted as a laboratory test according to the patented DLG test standard. The objective of this test is to determine whether barn installations can withstand the effects of stable air. Factory-new samples of all installed materials were tested. The test was based on the DLG test specification for investigating resistance to ammonia, version 07/2023. Other criteria were not tested.
Assessment in brief
The as-new test samples were tested regarding their ammonia resistance according to DLG-APPROVED test methods. The tested samples have met the requirements regarding the examined criteria.
Dlg Quality profile | Test result | Evaluation* |
---|---|---|
Single Criteria Resistance to Ammonia | ||
Abox series up to size 100 | resistant | ■■■■ |
Abox series from size 160 | partially resistant | ■■■■ |
Abox Pro series up to size 100 | partially resistant | ■■■■ |
Abox Pro series from size 160 | partially resistant | ■■■■ |
Abox accessories – Partition wall | resistant | ■■■■ |
Abox assessories – Sealing kit | resistant | ■■■■ |
Abox accessories – Insulating plugs | resistant | ■■■■ |
Abox accessories – Terminal holder | resistant | ■■■■ |
Abox accessories – Terminal block | resistant | ■■■■ |
Abox accessories – Mounting plate | resistant | ■■■■ |
Abox accessories – Double-membrane seals | resistant | ■■■■ |
Abox accessories – Attachment bushes | resistant | ■■■■ |
Abox accessories – Cable gland | resistant | ■■■■ |
* 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
Description and specifications
The samples tested here are components of the junction box from the Abox series. The box is also installed in animal houses, and can thus be exposed to elevated levels of ammonia in the housing environment.
Description and specifications
The samples tested here are components of the junction box from the Abox series. The box is also installed in animal houses, and can thus be exposed to elevated levels of ammonia in the housing environment.
Table 2: Technical characteristics (according to manufacturer)
Junction box Abox series | Abox series | Abox Pro series |
---|---|---|
Rated voltage | 1000 V AC 1000 V DC | 1000 V AC 1000 V DC |
Length | 87 – 252 mm | 92 – 252 mm |
Width | 87 – 252 mm | 92 – 252 mm |
Height | 52 – 120 mm | 60 – 120 mm |
Accessories | Dimensions | |
TW | Partition wall | 23 mm x 72 mm x 43,5 mm |
PST | Sealing Kit | 15 mm x 15 mm x 15 mm |
Abox 100 KH 2006 6² | Terminal holder TOPJOB | 69 mm x 124 mm x 60 mm |
Abox 160 KH 2010 10² | Terminal holder TOPJOB | 79 mm x 154 mm x 65 mm |
Abox 250 KH 2016 16² | Terminal holder TOPJOB | 77 mm x 219 mm x 77 mm |
Abox 025/040 KH 2273 2,5² | Terminal holder Wago | 23 mm x 70 mm x 27 mm |
Abox 025/040 KH 221 4² | Terminal holder Wago | 23 mm x 56 mm x 29 mm |
Abox 100 KH 221 4² | Terminal holder Wago | 22 mm x 88 mm x 32 mm |
Abox 100 KH 221 6² | Terminal holder Wago | 26 mm x 114 mm x 32 mm |
KLS-2,5²/4² | Terminal block | 46,6 mm x 17,8 mm x 31,5 mm |
MPI | Mounting plate | 94 mm x 94 mm x 2,5 mm up to 217 mm x 217 mm x 2,5 mm |
DMS | Double-membrane seals | |
AST | Attachement bushes | |
KVR | Cable gland | |
Insulating plugs Abox Pro | ||
Insulating plugs Abox |
The enclosures of the Abox series up to size 100 are manufactured from polypropylene (PP); those of the Pro series up to size 100 are manufactured from polycarbonate (PC). As of size 160, both enclosure series are manufactured from glass fibre-reinforced PC.
The method
Resistance to ammonia
The ammonia resistance of the materials was determined by a laboratory testing according to the DLG test standard for agricultural use. With the DLG laboratory test for NH3 resistance, it is possible to determine the ability of the test sample to withstand the effects of animal house air over a usage period of about 10 years.
The test was carried out in a gassing chamber under the following climate conditions:
For assessing the NH3 resistance, the test samples were examined visually, gravimetrically and through a measurement of the material thickness before and after the climate testing. The measurement of shore hardness only yielded relevant and tangible results for the accessory parts. The materials were tested on the basis of at least two samples.
Detailed account of the test results
Ammonia resistance
Neither the empty enclosures of the Abox series up to size 100 nor the tested accessories revealed any anomalies during the test. The enclosures’ different colours did not limit their functionality during the test.
The tested empty enclosures of the Abox Pro series and the Abox series as of size 160 did not initially reveal any visual anomalies either. On installation and removal of the cover, however, moderate embrittlement of the material was ascertained. This embrittlement was largely confirmed by measuring the hardness. As the basic functionality was not limited, these test samples can be classified as partially resistant to ammonia. Despite this, moving the threaded connections of the cover in this series with corresponding care is recommended.
Since the deviations do not affect the functionality of the component and significantly lower ammonia concentrations often occur in practice, the entire empty enclosure can nevertheless be assessed as essentially suitable. All other deviations in the measured parameters lay within the measurement uncertainty or the assessment limits. It is therefore to be assumed that the materials can essentially withstand an NH3-laden atmosphere such as that encountered in the exhaust air of pig houses.
The results for the enclosures, accessories and colours are shown in Tables 3 to 5.
Component | Visual assessment | Weight | Shore hardness | Evaluation | |
---|---|---|---|---|---|
Abox | Box (size 025 to 100), grey cover with seal | no change | < 1.0 % | < 3.0 % | resistant |
Abox | Box (size 160 to 350), grey cover with seal | Embrittlement | < 1.0 % | < 3.0 % | partially resistant |
Abox Pro | Box (size 025 to 100), grey cover with seal | Embrittlement | < 1.0 % | < 5.0 % | partially resistant |
Abox Pro | Box (size 160 to 350), grey cover with seal | Embrittlement | < 1.0 % | < 5.0 % | partially resistant |
Abox series empty enclosures | resistant |
Partition wall | Abox | no change | < 1.0 % | not tested | resistant |
---|---|---|---|---|---|
Sealing Kit | Abox | no change | < 6.0 % | not tested | resistant |
Insulating plugs | Abox | no change | < 1.0 % | not tested | resistant |
Insulating plugs | Abox Pro | no change | < 1.0 % | not tested | resistant |
Terminal holder TOPJOB | Abox | no change | < 1.0 % | not tested | resistant |
Terminal holder TOPJOB | Abox Pro | no change | < 1.0 % | not tested | resistant |
Terminal holder ELS | Abox | no change | < 1.0 % | not tested | resistant |
Terminal holder ELS | Abox Pro | no change | < 1.0 % | not tested | resistant |
Terminal holder WAGO 1 | Abox | no change | < 1.0 % | not tested | resistant |
Terminal holder WAGO 1 | Abox Pro | no change | < 1.0 % | not tested | resistant |
Terminal holder WAGO 2 | Abox | no change | < 1.0 % | not tested | resistant |
Terminal holder WAGO 2 | Abox Pro | no change | < 1.0 % | not tested | resistant |
Terminal block | Abox | no change | < 1.0 % | not tested | resistant |
Terminal block | Abox Pro | no change | < 1.0 % | not tested | resistant |
Mounting plate | Abox | no change | < 1.0 % | < 1.0 % | resistant |
Mounting plate | Abox Pro | no change | < 1.0 % | < 1.0 % | resistant |
Double-membrane seals | Abox Pro | no change | < 1.0 % | not tested | resistant |
Attachment bushes | Abox | no change | < 3.0 % | not tested | resistant |
Attachment bushes | Abox Pro | no change | < 3.0 % | not tested | resistant |
Cable gland | Abox | no change | < 3.0 % | not tested | resistant |
Cable gland | Abox Pro | no change | < 3.0 % | not tested | resistant |
Accessories of the Abox series | resistant |
Colors | Visual assessment | Weight | Shore hardness | Evaluation | |
---|---|---|---|---|---|
Black, white | Abox Pro | Embrittlement | < 1.0 % | < 5.0 % | partially resistant |
Cover red | Abox Pro | Embrittlement | < 1.0 % | < 3.0 % | partially resistant |
Black, white | Abox | no change | < 1.0 % | < 3.0 % | resistant |
Cover red | Abox | no change | < 1.0 % | < 3.0 % | resistant |
Colors of the Abox series | resistant |
The results of the test show that the Abox series with all accessories meets the DLG requirmement for ammonia resistant for receiving the DLG APPROVED quality mark. As a result of this, it can be assumed that the tested series is to be classified as resistant to ammonia-laden barn air. The moderate embrittlement of those empty enclosures that are manufactured from polycarbonate does not limit the basic functionality.
Manufacturer and applicant
Günther Spelsberg GmbH & Co. KG
Im Gewerbepark 1
D-58579 Schalksmühle
Contact
Telephone+49 (0)2355 892-0
Telefax +49 (0)2355 892-299
info@spelsberg.de
www.spelsberg.de
Contact us
DLG TestService GmbH - Groß-Umstadt location • Max-Eyth-Weg 1 • 64823 Groß-Umstadt • Tel: +49 69 24 788-600 • tech@DLG.org