PC enclosures for food process applications, NEMA 4X

A line of thermoplastic custom PC enclosures from Midwest Plastic Fabricators are intended to replace heavy traditional materials with their light-weight design and absence of draft angles. They have NEMA 4X-rated with a UL94V-0 flame rating.

01/06/2011


Midwest Plastic Fabricators’ new high-performance thermoplastic custom enclosures are allegedly one-third of the weight of stainless steel and are intended to replace heavy traditional materials. A significant reduction in the weight of the enclosure assembly allows more freedom in machine frame design. Another important feature is that these enclosures do not have draft angles, the result being flawless pivoting for the pendant mount, according to MPF.

The entire enclosure assembly at 55-lb does not require paint, is non-conductive, and is NEMA 4X-rated with a UL94V-0 flame rating. The inner enclosure is 25 x 20 x 5, the outer cabinet 32 x 28 x 8. Other sizes are available including double doors with 3-point latching.

In the application shown, design enhancements to reinforce the structural strength reportedly allow the assembly to be pendant mounted and cantilevered. The assembly consists of an outer enclosure with a large flush polycarbonate viewing window in the door; an inner enclosure with a bottom to top swing hinged door to house the controls which are mounted on a polycarbonate sub panel. The doors use a stainless steel piano hinge. The outer door is secured with ¼ turn latches, and the inner panel door is secured with stainless steel fasteners that screw into brass inserts.

To secure the pendant mount bearings, the manufacturer, Midwest Plastic Fabricators in Aurora, Ohio, reinforced the cabinet with polycarbonate stiffeners that are welded to the inside of the cabinet. This structure allows the cabinet assembly to support the heavy electrical and electronic controls used in today’s computerized industrial control systems.

An added benefit is that the enclosures are available in colors to suit the application, according to MPF. For example, in a meat process plant, a darker color may be preferred in comparison to other food operations that seek a lighter color.

www.midwestplasticfabricators.com

Midwest Plastic Fabricators

- Edited by Amanda McLeman, Control Engineering, www.controleng.com



No comments
Consulting-Specifying Engineer's Product of the Year (POY) contest is the premier award for new products in the HVAC, fire, electrical, and...
Consulting-Specifying Engineer magazine is dedicated to encouraging and recognizing the most talented young individuals...
The MEP Giants program lists the top mechanical, electrical, plumbing, and fire protection engineering firms in the United States.
2014 Product of the Year finalists: Vote now; Boiler systems; Indirect cooling; Integrating lighting, HVAC
High-performance buildings; Building envelope and integration; Electrical, HVAC system integration; Smoke control systems; Using BAS for M&V
Pressure piping systems: Designing with ASME; Lab ventilation; Lighting controls; Reduce energy use with VFDs
Case Study Database

Case Study Database

Get more exposure for your case study by uploading it to the Consulting-Specifying Engineer case study database, where end-users can identify relevant solutions and explore what the experts are doing to effectively implement a variety of technology and productivity related projects.

These case studies provide examples of how knowledgeable solution providers have used technology, processes and people to create effective and successful implementations in real-world situations. Case studies can be completed by filling out a simple online form where you can outline the project title, abstract, and full story in 1500 words or less; upload photos, videos and a logo.

Click here to visit the Case Study Database and upload your case study.

Protecting standby generators for mission critical facilities; Selecting energy-efficient transformers; Integrating power monitoring systems; Mitigating harmonics in electrical systems
Commissioning electrical systems in mission critical facilities; Anticipating the Smart Grid; Mitigating arc flash hazards in medium-voltage switchgear; Comparing generator sizing software
Integrating BAS, electrical systems; Electrical system flexibility; Hospital electrical distribution; Electrical system grounding
As brand protection manager for Eaton’s Electrical Sector, Tom Grace oversees counterfeit awareness...
Amara Rozgus is chief editor and content manager of Consulting-Specifier Engineer magazine.
IEEE power industry experts bring their combined experience in the electrical power industry...
Michael Heinsdorf, P.E., LEED AP, CDT is an Engineering Specification Writer at ARCOM MasterSpec.