RHM International, LLC

Innovative High Reliability High Voltage Equipment for the Power Grid

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New Zealand Utility Purchases RIF® Bushings for Their Transformer Bushing Replacement Program

TPMZ Bushing Replacement with New 110 kV RIF® Bushings from RHM International

In 2013 Transpower New Zealand Limited (TPNZ), a state-owned electric power transmission company in New Zealand, started a multi-year program to replace their inventory of aging oil-filled transformer bushings. Many of these bushings were showing deteriorating test results (power factor) and sealing systems. To date this program has identified 69 transformer banks (many of which […]

Filed Under: Products

The RIF® HV Dry Type Outdoor Cable Termination

RIF Cable Terminator by RHM International

MV cable systems have been using pre-fabricated dry type terminations, joints and splices for years. These include heat shrink, cold shrink and push-on connection types. The use of these types of connections has been a great step forward in simplifying field installations and reducing installation errors in MV cable systems. For HV cable systems the […]

Filed Under: Products

RHM Presented at IEEMA TECH-IT Fourth International Conference on Instrument Transformers in New Delhi, India

Internal arcing test of 245 kV HV DryShield® CT After Test Result

RHM International was a recent presenter at the Indian Electrical & Electronics Manufacturers’ Association’s (IEEMA) TECH-IT Fourth International Conference on Instrument Transformers held on 13-14 December 2018 in New Delhi, India. The IEEMA is an association of manufacturers of electrical and industrial electronic equipment in India with 800+ member organizations. The association works closely with […]

Filed Under: Products

Factory Visit by CEATI International

CEATI International logo

On October 24, 2018 twenty-one (21) representatives from the CEATI International SEAM (Stations Equipment Asset Management) Interest Group visited our new production and test facility in Hudson NH. This visit was arranged in conjunction with the SEAM Interest Group’s Fall General Meeting held in Providence RI. The CEATI International SEAM Interest Group has members from […]

Filed Under: Products

HV DryShield® Current Transformer Internal Arc Fault Test

When an internal arcing fault occurs in equipment the consequences can be catastrophic. The destructive air pressure waves that are created by the millisecond thermal expansion of air with the consequential expulsion of toxic fumes and hot oil and fire risk can put personnel and the surrounding equipment in the vicinity of the arc fault […]

Filed Under: Products

eVCT Dry Type Combined Electronic Voltage and Current Transformer

eVCT combined voltage and current transformer

IEC 61850 will bring major changes to how utilities design their substation installations and conduct business. We are seeing more and more installations of substation protection and control (P&C) systems that are based on the IEC 61850 communication systems as utilities start to recognize the cost advantages of eliminating the expensive point-to-point wiring of traditional […]

Filed Under: Products

HV DryShield Smart Current Transformer

Smart HV DryShield® CT

Smart Current Transformer With Built-In Real-Time Insulation Condition and Error Monitoring The smart HV DryShield® current transformer comes equipped with a built-in monitoring device that provides real-time monitoring of the CT’s primary insulation condition and the winding current error and phase difference for each of the CT’s secondary coils. This is accomplished by a built-in […]

Filed Under: Products

The Smart RIF® Bushing

A Simple Economic Alternative to Voltage Tap Connected Devices and Sensors Due to its higher output voltage a voltage tap can be connected to a variety of third party potential devices and sensors for various relaying, measuring and insulation monitoring solutions. However, these devices are expensive to install and operate, requiring communication cabling to separate […]

Filed Under: Products

Interview: High-Performance Electrical Insulation Technology

Built on technology dating back to a few decades, the national power grid and its supporting infrastructure have become increasingly outdated and are struggling to meet the demands of today. Upgrading the power grid on a national level is a very complex process, which involves replacing equipment on a case-by-case basis to maintain costs. There […]

Filed Under: News

IEEE Power & Energy Society T&D Conference and Exposition Denver, Colorado

RHM International was one of the 920 industry exhibitors at the 2018 IEEE PES T&D Conference and Exposition held in Denver, Colorado from April 16th -19th. This show is one of the premier events for the electrical power industry providing a forum for a wide range of technical topics (e.g. smart equipment, grid resiliency, energy […]

Filed Under: Products

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