CONTROL CABINET FOR
HIGH VOLTAGE EQUIPMENT

Enhanced knowledge
Recognized expertise

Upgrades and retrofits have never been this easy.

Reduce the risk of safety issues, downtimes and failures with your power transformer fleet. Discover our expertise in upgrading and retrofitting your power transformers.

Upgrades and retrofits have never been this easy.

Reduce the risk of safety issues, downtimes and failures with your power transformer fleet. Discover our expertise in upgrading and retrofitting your power transformers.

NOMOS elevates the quality and durability of your existing infrastructure

Upgrading and replacing control, automation, monitoring and conditioning components, whether current or obsolete, plays a critical role in extending the lifespan, and enhancing the safety and reliability, of aging power transformers.

Retrofitting new control cabinets to existing assets requires not only extensive expertise—but extensive experience out in the field. Count on our experts to recommend the best course of action for your control cabinet refurbishment project.

Our commitment to continuity

Whether you are replacing a control cabinet directly at the substation to extend the life of your assets as part of your capital budget or replacing a control cabinet on a power transformer being refurbished in a plant, we provide a one-stop solution for every aspect of the process—from engineering and production to installation and start-up.

Our customized control cabinet products include circuits and interfaces for all standard accessories and components installed on a power transformer and can also be adapted to incorporate technology and safety enhancements, company specifications, and smart grid requirements.

Complete compliance with requirements
and industry standards

Standardized design

  • ONAF, OFAF and ODAF standard control circuits, including Auto/Off/Manual and lead stage selector switch
  • Interface for level gage alarm, control and protection signals, pressure relay and other transformer components
  • Temperature monitoring for critical applications
  • Component integration: annunciator, on-load tap-changers, transfer switch, temperature controller, fiber optic sensors and more
  • Programming and configuration of controllers, protection relays and communication networks
  • Standard terminal layout to control cooling, alarms, trigger circuits and test switches
  • Comprehensive set of drawings and wiring plans and diagrams, layout plans and a hardware list
  • Optional CSA/UL design, compliant with IEEE C57.148 standard if required

Robust component selection

  • Numerous upgraded component options to extend the life and enhance the safety and reliability of aging assets as part of capital improvement plans
  • Robust manufacturing terminals for alarms, control, power and measuring
  • Terminals for current transformer and test switch
  • Protection relays, temperature controller, remote terminal, annunciator, tap-changer controller and power transformer monitoring system.
  • Choice of communication medium, including copper, optical fiber, radio or satellite, according to the required protocol and available infrastructure (DNP3, IEC 61850 and more)
  • Robust accessories: GFCI receptacles, heating, ventilation, and drain

Specialized manufacturing

  • Robust NEMA/IEC cabinet for outdoor use made of painted or stainless steel
  • Inside doors, 3-point handles, rain protector, and industrial-grade hardware
  • Support for gages or other components
  • Gland plate and external/internal NEMA ground pad
  • SIS, ETFE, MTW/TEW wiring
  • Numbering and labeling system compliant with client requirements and IEEE C37.2 standard
  • Provision for cabinet assembly on equipment

NOMOS
Part of the VOLTYX family

When you partner with NOMOS, you benefit from our sister companies that can assist customers across the United States. Tap into their expertise in the installation and commissioning of control cabinets on your high-voltage assets as well as the configuration and programming of monitoring controllers, communication networks and protection relays (unionized or non-unionized requirements).

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Contact

Got questions about our control cabinet solutions for high-voltage equipment and power transformers?

Get a quote

Have a project in mind and need a quote? Reach out to us with your specs and let’s talk!