Electrical Supplies
Instrumentation cables
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- Instrumentation cables, multiple conductor cables carrying low energy electrical signals used for monitoring or controlling power systems and their associated processes. Ramcro's instrumentation range is flame and fire retardant, halogen-free with low smoke emission, and resistant to oil and hydrocarbons, which is what qualifies it for oil, gas and petrochemical work.
Application
Used to carry measurement and control signals between field instruments and control panels, supplied with individual pair screening or an overall screen to protect the signal from interference in industrial environments. Oil and hydrocarbon resistance matters wherever the cable may sit in a bunded area or a process trench, the sheath, not the conductor, is what fails first in those locations.
Standards & Reference 9 cited
BS EN 50290-2
Common design and construction rules for communication cables: the materials and build quality expected of data, signal and instrumentation cable.
IEC 60331-21
Circuit integrity under fire: whether a cable keeps carrying current while it burns. This is the property that separates a fire-resistant cable from a merely flame-retardant one.
IEC 60332-3-24
Flame spread on a bundle of cables in a vertical tray, Category C. A cable can pass the single-cable test and still spread fire when hundreds are bunched in a riser, which is what this addresses.
IEC 60754-1
How much halogen acid gas the cable gives off when it burns. Halogen-free matters where people or sensitive equipment share the space with the cable.
IEC 60754-2
The acidity and conductivity of the gases a burning cable produces: in effect, how corrosive the smoke is to the building and its equipment.
IEC 61034
Smoke density from a burning cable, measured in a sealed chamber. Low smoke is an evacuation requirement: people leave a building by sight.
Also citedBS EN 50288-7HD 383ISO/IEC 17025:2017 tested
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