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Recommendation for use of IEC 61111:2009 standard live working-Electrical Insulating Mat.
The details are provided with regard to instructions for maintenance, inspections, retest and use of electrical insulating mats after purchase.
Proper transportation and storage is must to protect the insulating properties and durability of mats. These mats shall not be bent or compressed. The mats should not be stored/used in the proximity of excessive heat sources. For maximum life of the mats do not store in open Sunlight, artificial light or any other sources of ozone for long hours.
Every Roll/Mat of the electrical Insulating mats shall have complete and visible marking as per IEC 61111:2009.
Inspect visually each side of electrical insulating mats before use. If mat is dirty, wash it with respect of the operating temperature range.
Before use, the mats shall be inspected and if any cracks, tears or small pin holes are found then the mats shall be thought unsafe and returned for testing.
Ideal Operating Temperatures are -40 deg. cl. to 55 deg. cl. and avoid contact of mats with chemicals, solvents and strong acids as this adversely affect the life and properties of mats. Mats shall be placed on clean and smooth floor. Place the feet in the center of the mat.
No electrical insulating matting, even those held in storage be used unless they have been inspected and/or electrically tested within the previous 12 months.
The tests on electrical insulating matting consist of visual inspection, and then a proof dielectric test without moisture conditioning, expect for class 0 where visual inspection only is required.
The maximum use voltage recommended for each class of electrical insulating matting is designated in Table.
The maximum use voltage is the voltage rating of the protective equipment that designates the maximum nominal voltage of the energized system may be safely worked.
On multiphase circuits, the nominal voltage is equal to the phase-to-phase voltage. If there is no multiphase exposure is a system area, and the voltage exposure is limited to the phase to earth potential, the phase to earth potential should be considered to be the nominal voltage.
If electrical equipment and devices are insulated, or isolated, or both, such that the multiphase exposure on an earthed neutral star circuit (grounded wye) is removed, the nominal voltage may be considered as the phase-to-earth voltage on that circuit.
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