RHM International, LLC

Innovative High Reliability High Voltage Equipment for the Power Grid

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  • Products
    • RHM International current transformer typesCurrent Transformers
      • LRGBJ Series – up to 550kV
      • LRGBJ-ZH Cascade Series – above 220kV
      • LRGBJ – ZHD Series for High Currents
      • GDGL Optical/Electronic Series
      • Shunt Capacitor Bank Applications
    • Dry Insulation high voltage transformer bushings by RHM InternationalTransformer Bushings
      • RIF® – FGRBW Tough Series
      • Cascade RIF® for EHV Applications
      • Built-In Insulation Monitoring
    • RHM International high voltage wall bushingsWall Bushings – Special Bushings
      • STB Wall Bushings Specifications
      • STB-L Series: Wall Bushing with CT
      • Special Bushings — Custom Designs
    • cable termination by RHM InternationalHV DRY TYPE OUTDOOR CABLE TERMINATOR
      • Cable Terminator
    • Electronic Combined Voltage and Current Transformer REVCT35-1000 Series 35 kV – 1000 kV by RHM InternationalIEC 61850 Ready and NCITs
      • BIIT™ HV MEASUREMENT BUSHING
      • Optical/Electronic Current Transformer
      • Electronic Combined VT and CT
      • Smart Monitoring
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  • Why Us
    • Company Advantages
      • Shorter Lead Time
      • Custom Designs
      • Testing Capabilities
      • Quality & Supply Chain
      • ISO 9001
    • Product Benefits
      • Outstanding Performance
      • No Maintenance
      • No Explosions
      • Easy Storage
      • Environmentally Friendly
      • Longer Life & Higher ROI
      • Sustained Higher Performance
      • Proven Track Record
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  • Technology
    • 1Our Technologies
      • HV DryShield® for CT’s & Wall Bushings
      • RIF® Insulation for Transformer Bushings & Cable Terminators
    • smart-monitoringSmart Monitoring
      • Built-in Condition Monitoring
      • Bushing based Transformer PD Monitoring
    • The-Dry-Type-RIF-Bushing_The-New-Technology-in-HV-Bushings-1Publications
      • BIIT Bushings: Intelligent HV bushings w/ integrated low power voltage and current transformers
      • HV DryShield® – A dry type HV insulation system for extreme environments
      • RIF ® bushings The paperless, dry-type bushing technology
      • The Dry Type RIF ® Bushing: New Technology in HV Bushings
      • Advances in Bushings Technology – Integrated Monitoring Systems
    • 3Product Specification Sheets
      • Current Transformers
      • Wall Bushings
      • IEEE Bushings
      • IEC Bushings
      • Cable Terminals
    • Installation & Testing
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Company Advantages

RHM International understands the challenges in maintaining, replacing, upgrading or simply building high voltage installations. There are many factors influencing the choice of such strategic equipment; we listen to your objectives and study your technical, safety, and environmental guidelines carefully. We then build in your preferences and develop the best overall financial  solution; in short, a solid business solution.

RHM corporate headquarters

Shorter Lead Time

Our proprietary manufacturing does not use any vacuuming or drying procedures and is based on straightforward processes. Therefore we deliver products consistently quicker, all other conditions equal. Our on-time delivery record is excellent due to these simpler and robust processes. If you face any emergency to replace equipment contact us; chances are we can help quickly.

RHM transformer bushings packed for shipment

Custom Designs

RHM International has the engineering and production flexibility to respond to special requests for custom designs including replacements for heritage bushings, unique transition terminations, special CT applications, etc.

We pride ourselves on being able to come up with effective solutions for difficult problems.

high voltage product custom designs by RHM International

Testing Capabilities

RHM product testing capabilities

We are fully equipped for full in-house routine tests according to international standards and additional special tests.

Quality & Supply Chain

Design with Manufacturing Excellence

Success of a robust product cannot rely on a smart design alone, no matter how unique it is. Mature manufacturing processes and tight Quality control defined by solid Quality Assurance systems are required to provide customers with reliable performance products. RHM International understands this.

Furthermore, a product is as good as the quality consistency of its key components. RHM International has early on decided that critical components should be produced in house. This ensures a total control from raw material procurement to final product testing with materials traceability. This ensures a consistent high quality manufacturing and delivery process.

Our manufacturing know-how was developed in an ISO 9001 certified facility with a team having more than 40 years of experience in High Voltage T&D technologies and field problem solving.  All manufacturing employees receive extensive and regular training in electrical design, high-tech manufacturing, and testing.  RHM has established an enviable customer satisfaction rating by delivering top-quality products for critical applications.

The result? As of today, more than 100 000 products using the HV DryShield®  and RIF® technologies are in service.

ISO 9001

IEC, GSA or IEEE standards are commonly used as references. Our manufacturing plants are certified to ISO 9001 and ISO 14001.

Why Us

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