Secure Spares and Connectivity for Motors, Valves, and Hazardous Enclosures

More consideration needs to be given to the full instrumentation and valve lifecycle, from installation through commissioning, maintenance, optimisation and, when needed, replacement, so that a plant’s performance in year 10 is equivalent to year one. From a sustainability perspective, this matters as much as any new ‘green’ announcement

More consideration needs to be given to the full instrumentation and valve lifecycle, from installation through commissioning, maintenance, optimisation and, when needed, replacement, so that a plant’s performance in year 10 is equivalent to year one

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Other drawbacks are the cost for this style of motor bearing and the fact that the bearings are usually available only up to size 6311. On motors larger than 75 kW, it is generally recommended that an insulated bearing be installed on the opposite end of the motor on which the shaft grounding device is installed, regardless of which style of shaft grounding is used

Grounding bearing isolators Grounding bearing isolators combine two technologies: a 2-part, noncontact isolation shield that uses a labyrinth design to prevent ingress of contaminants; and a metallic rotor and isolated conductive filament ring to divert shaft currents away from the bearings. Since these devices also prevent lubricant loss and contamination, they replace standard bearing seals and traditional bearing isolators

Adding a shaft grounding device to the motor prior to installation (or buying a motor with one preinstalled) can be a small price to pay when compared to the price tag of maintenance costs associated with bearing replacement, not to mention the high costs of downtime in a facility. There are several common types of shaft grounding devices in the industry today, such as carbon brushes, ring-style fibre brushes and grounding bearing isolators; and other methods of protecting the bearings are also available

Pepperl+Fuchs has expanded the capabilities of its 6000 Series purge and pressurisation system with a high-current output option, providing greater flexibility for hazardous-area applications that require higher electrical loads. By enabling direct switching of enclosure power within the system, the enhanced electronic processing control unit (EPCU) helps reduce the need for additional Ex-rated switching hardware, simplifying system design and lowering installation costs

By enabling direct switching of enclosure power within the system, the enhanced electronic processing control unit (EPCU) helps reduce the need for additional Ex-rated switching hardware, simplifying system design and lowering installation costs

By enabling direct switching of enclosure power within the system, the enhanced electronic processing control unit (EPCU) helps reduce the need for additional Ex-rated switching hardware, simplifying system design and lowering installation costs. The upgraded EPCU features two enclosure contacts rated up to 12 A per contact, allowing a broader range of applications to be supported directly by the purge and pressurisation system

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