For further general guidance of EDLC capacitor, see IEC 60721-3-0.
During periods of erection work, which are often connected with down time, the user should be aware that conditions might differ from those experienced during the period of operation.
Therefore the selection of another class may be necessary for this period, unless special precautions have been taken.
The severities specified are those which will have a low probability of being exceeded.All specified values are maximum or limit values. These values may be reached. but do not occur permanently. Depending on the local situation there may be different frequencies of occurrence related to a certain period of time. Such frequencies of occurrence should be considered for any environmental parameter. They should additionally be specified if applicable. Information on duration and frequencies of occurrence is given in Amendment No. 1 to IEC 60721-3-0 as clause 6.
Attention is drawn to the fact that combinations of the environmental parameters given may increase the effect on a product. This applies especially to the presence of high relative humidity in addition to biological conditions or to conditions of chemically or mechanically active substances.
The environmental conditions present at a location may be affected by other influences, e.g.heat dissipation sources, special process conditions, etc.
Measurements of the environmental conditions present at a location should be made at a representative point in the vicinity of the product.It is recognized that extreme or special environmental conditions may exist. Specifications for products to operate under such special conditions are a matter for negotiation between supplier and user.
Supreme Power Solutions Co., Ltd. (SPS) is a leading manufacturer of ultracapacitors, as well as a provider of ultracapacitor energy storage systems and technological solutions. Our products have wide industry applications, such as new energy vehicles, wind turbines pitching control systems, trams and subways, smart grid, micro grid, heavy duty machineries, intelligent instrument, etc. We support more than 200 customers, and our products are exported to 26 countries and territories.