RHM International
RHM International 
Untitled Document
   Products
   Introduction
   Current Transformers
    LRGBJ Series
    LRGBJ - ZHD Series
    GDGL Optical/Electronic Series
    Shunt Capacitor Bank Applications
   Wall Bushings -
   Special Bushings
    STB Wall Bushings Specifications
    STB-L Series: Wall Bushing —
     Current Transformers Combined
    Special Bushings —
      Custom Designs
   Transformer Bushings
    FGRBW Series
     Transformer Bushings
   Expertise & Assistance
 

 

 

 

Transformer Bushings

FGRBLW

Dry Type Transformer Bushing
Reliable, Explosion-Free High-Voltage Transformer Bushings that Never Need Maintenance.

HV DryStrong™ uses our RIF technology (Resin Impregnated Fiberglass): tough and resilient to mechanical and thermal stresses.

Non-oil, non-gas, non-porcelain.

Explosion-free, maintenance-free, and environmentally friendly
The dielectric dissipation and partial discharge of RHM’s transformer bushings are low thanks to its new insulating material and refined structure. Our unique Resin Impregnated Fiberglass Insulated (RIF) condenser structure allows for strong and resilient service in addition to high resistance to thermal shocks. The bushing has a high mechanical load-bearing capacity resulting in a longer lifespan. It is also truly explosion-free.

The adhesion between the electrode and insulation material is superior because of our unique manufacturing process. This provides insulation with a consistent and lasting performance.

The internal stress of the capacitive core has been decreased significantly by our patented capacitive core internal stress division cushion technology, which improves resistance to cold and heat impulses.

Our dry transformer bushing design features fiberglass impregnated with epoxy resin, which makes all interface seals simpler and safer.

As for all of our products, we use exclusively silicone rubber as external insulation. Silicone rubber, a growing choice throughout the industry, is stronger than porcelain, lightweight, and non-polluting.

Insulation type

OIP

RIP

RHM
RIF

Internal Insulation

Oil, paper

Epoxy, paper

Fiberglass, epoxy

External insulation

Porcelain

Porcelain

Hollow composite
insulation

Silicone Rubber

Explosion risk

Can explode

Can explode

Can explode

Explosion-free

Withstand thermal level

A

B

B

B

Partial Discharge

Ur/<10pC

Ur/<10pC

Ur/<10pC

Ur/<5pC

Withstand cold and heat impulse

____

____

____

Good

Resistance to shocks

Low

Low

Good

Good

Maintenance

Needs maintenance

Maintenance-free

Maintenance-free

Maintenance-free

Resistance to pollution

Base

Base

Good

Good

Weight

Heavy

Heavy

Lighter

Lightest

 
Customer benefits:

  Totally safe, no risk of explosion.
  Totally maintenance-free, low cost of ownership.
 

Superior resistance to mechanical and thermal stresses.

  Environmentally friendly – no risk of toxic leakage. 
  Sealed and impervious to water and pollution.

More Information 
To view our technical papers, click here:

 

 

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