|
|
|
# Materials clarification
|
|
|
|
- **Cables should be halogen-free**, in principle **LSZH** <br>
|
|
|
|
Here is an example of common cabling for underground use:
|
|
|
|
SPECIFICATION : LO-GE Nº493 <br>
|
|
|
|
CONDUCTOR : tinned copper <br>
|
|
|
|
CONSTRUCTION : 30 x 0.25 mm dia. <br>
|
|
|
|
Dia. 1.50 mm <br>
|
|
|
|
INSULATION : **SILTEM** <br>
|
|
|
|
Max. o.d. 2.30 mm <br>
|
|
|
|
SPECIFICATIONS : RATED VOLTAGE 250 V r.m.s.<br>
|
|
|
|
MAX. OPERATING TEMP. -40 to 130°C<br>
|
|
|
|
ACCORDING TO SAFETY INSTRUCTION IS 23<br>
|
|
|
|
Data sheet: EDMS [1965218](https://edms.cern.ch/ui/file/1965218/1/TechDescr_Thin-Insulation_Flexible_Wiring_Cables_1965218_docx_cpdf.pdf)/ [1965217](https://edms.cern.ch/ui/file/1965217/1/Classification_Thin-Insulation_Flexible_Wiring_Cables_1965217_docx_cpdf.pdf) (for cern-internal-stores)<br>
|
|
|
|
|
|
|
|
- According to [[1](https://edms.cern.ch/ui/file/1155726/1/Utilisation_Cables_With_Halogen.pdf)] to be considered “halogen-free”, the pH and conductivity values outlined in
|
|
|
|
the standard should be met for the material:
|
|
|
|
- The pH value should not be less than 4.3 when related to one liter of water
|
|
|
|
- The conductivity value should not exceed 10 μS/mm when related to one liter of water.
|
|
|
|
- For connectors, as other equipment groups, we could consider:
|
|
|
|
*This Instruction* [[2](https://edms.cern.ch/ui/file/335806/LAST_RELEASED/IS41_E.pdf)] *applies to all equipment or installations consisting of or containing
|
|
|
|
substantial amounts of plastics. It is of particular importance in experimental areas
|
|
|
|
and all underground areas. **It does not apply to small parts (such as knobs, handles,
|
|
|
|
rollers, gaskets, fasteners, clips, grommets, rub strips, pulleys or small electrical
|
|
|
|
parts)** which would not contribute significantly to smoke, toxic, or corrosive gas
|
|
|
|
emissions.*
|
|
|
|
|
|
|
|
|
|
# ConfCall 23 Mar 2020
|
|
# ConfCall 23 Mar 2020
|
|
### Main Backplane
|
|
### Main Backplane
|
|
Here is the back side of the main backplane, where you can see the silkscreen on the power bags.
|
|
Here is the back side of the main backplane, where you can see the silkscreen on the power bags.
|
... | | ... | |