Electrostatic Equipment Spray Outs
Electrostatic equipment is all about protecting yourself and your property. A normal range of goods and materials will be protected by this kind of equipment, and the range of goods and materials that it covers is almost endless. It can protect paper and fabric, electrical goods such as wiring, computer equipment, appliances such as fridge/freezer, television and stereo, and almost anything else you can think to protect.
There are two types of electrostatic coatings that can be applied to any kind of electrostatic equipment: non-permeable and permeable. Non-permeable coatings are usually applied for general application purposes, and these tend to be very easy to apply – although non-permeable coatings tend to deteriorate more quickly than permeable ones do. There is some degree of electrostatic resistance to all kinds of other coatings, but in general this isn’t a problem. The permeable ones have greater transfer efficiency and lower transfer losses, so they are used more often, but they also tend to be somewhat more expensive.
Some electrostatic coatings have a third classification which is waterborne coatings. These use a special coating that flows with the passing air stream. This increased transfer efficiency allows more power to be transferred, but the increased risk of surface erosion means that they are less widely used. Waterborne coatings come in different thicknesses and can be affected by wind. This means that you may need to consider using damp proofing or other means of protection when choosing waterborne coatings. In general, they are used for general protection where there isn’t too much risk of surface erosion.
The third classification of coatings is between charge and conductive. These are usually separated by a thin film of plastic or other material that acts like an insulator between the charged particles and the charged surface. They both provide protection, but the insulator provides a much higher level of protection than conductive coatings. For example, electrostatic charged coatings are usually made from an electrostatic charge produced in a lab, while conductive coatings are usually made from a liquid or a powder. Both provide excellent protection, but the conductive version has a higher level of reliability and durability when compared to its equivalent counterparts.
There are several reasons why electrostatic spraying may be necessary. One reason is that it helps to reduce or eliminate the risk of lightning strikes. Lightning usually hits steel structures during the construction process, causing massive damage. Another reason is that electrostatic spraying is often required in damp proofing tanks and other such equipment. It can help prevent damage to these surfaces and may even provide some level of protection against other contaminants and wear and tear.
Different types of electrostatic application coating are available. Most common types are either conductive or grounded, and both provide excellent protection from electrostatic discharge. Grounding coatings are more difficult to install than conductive coatings and require an external ground wire and an internal Ground Fault Circuit Interrupter (GFCI). The GFCI connects the grounded conductor to the GFC, which is connected to the grounded wire inside the enclosure. The GFCI also prevents the discharge of harmful airborne particles when the coating is applied.
There are other advantages as well. Higher transfer efficiency means less energy loss, and increased reliability means that equipment will be able to operate longer before needing recharging. A coating with a lower transfer efficiency means that it has a slightly higher cost per unit of capacity. Higher transfer efficiency means that the unit will have a higher capacity.
Electrostatic spraying is used for both protection and increased reliability. It can also be used in applications where increased reliability is not important, such as in an HVAC system. It provides excellent protection against abrasive impacts, which is important in HVAC equipment, but not in many other applications. Its increased transfer efficiency makes it worth the additional cost of purchasing the extra spray application.