RHM International, LLC

Innovative High Reliability High Voltage Equipment for the Power Grid

Menu
  • Home
  • 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
    • Close
  • 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
    • Expertise & Assistance
    • Close
  • 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
      • 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
    • Close
  • Your Specs
  • HV Testing Services
  • About Us
  • Blog
  • Opportunities
  • Contact Us

LRGBJ Series – up to 550kV

Specifications and Performance

  1. Rated primary voltage: up to 550kV
  2. Rated primary current: 5-2500A
  3. Rated secondary current: 5A, 1A
  4. Rated output 10-50VA
  5. Metering accuracy class: 0.2S, 0.2, 0.5S and 0.5 class
  6. Accuracy limit factor 5,10, 15, 20, 30, 40
  7. Protection accuracy class: 5P, 10P and TPY (additional classes on demand)
  8. Secondary cores: 1-8

220kV-CTblank1

LRGBJ series Current Transformers

Accuracy Class0.2S, 0.2, 0.5S, 0.5 or 5P, 10P, TPY
(for more specific need, please contact us)
Rated Current5~2500 A (For higher currents see our ZHD series. For very low ratios see our specific series under shunt capacitor bank applications)
Ambient Temperature-50 C to *45 C
Insulation Level (kV)550 kV rated :680/1175/1550
252 kV rated: 460/1050/1200
126 kV rated: 230/550/630
Partial Discharge Level<5 pC
550 kV rated: <10 pC

Standards

All products comply with IEC-61869-2,  IEEE C57.13 and  CAN/CSA-C61869-2 standards. Protective class current transformers comply with IEC-60044 - 6: 1992 "Requirements for Protective Current Transformers for Transient Performance"

Maintenance

No maintenance is needed for our Current Transformers.

Option: Built-in insulation condition monitoring is offered as an option for continuous online monitoring of the equipment.

Reminder: for electrical safety reasons, secondary circuits should not be opened during operation of any Current Transformer.

pic-003

Inquiry Check List

When placing an order, customer's specification needs to include:

Reference Standard
Rated voltage
Rated current
Rated frequency
Rated transformation ratio
Number of secondary windings
Rated output
Accuracy class(es)
Accuracy limit factor
Instrument security factor
Environmental Conditions
(Altitude, Pollution Class)

If users have specific requirements, custom designs can be jointly defined in advance and products will be designed according to customer's specification.

Dimensions - for further details please see the specification sheet in Downloads
The following dimensions represent typical LRGBJ Current Transformers. However, we custom design for most voltages or operating conditions encountered on T&D grids around the world.

Please contact us for special needs.

RHM-products-LRGBJSeries–upto550kV-12-22-15-3a

Model and SpecificationHighest
voltage for
equipment (kV)
Rated Current
(A)
W
(mm)
D
(mm)
L
(mm)
Creepage
Distance
(mm)
Weight
(kg/lb)
LRGBJ – 40.5 / 100040.5800~10006863701015101590/198
LRGBJ – 40.5 / 250040.52000~25006863701060101590/198
LRGBJ – 126 / 1200126120075038517853200240/529
LRGBJ – 126 / 25001262000~250075038518303200240/529
LRGBJ – 252 / 12002521200105255226706300440/970
LRGBJ – 252 / 25002522000~2500105255227406300440/970
LRGBJ – 550 / 2500 TPY550250015208555850137503000/6614

More Information

To view our brochure, click here.

Products

©2020 RHM International, LLC. All Rights Reserved. Developed by BBDS Design