ZDVolt provides OIP, RIP, RIS, P&O, and SEC bushings for distribution and power transformers, as well as HVDC bushings for the valve side of converter transformers.
ZDTOIP
Oil-impregnated paper (OIP) condenser bushings — the most widely deployed bushing technology worldwide, offering proven reliability and flexible configurations.
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ZDTRIP
Resin-impregnated paper (RIP) dry-type condenser bushings — maintenance-free, leakage-free, and non-flammable with excellent thermal performance.
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ZDTRIS
Resin-impregnated synthetic (RIS) bushings combining dry-type convenience with advanced synthetic insulation for enhanced dielectric performance.
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ZDTHPO
Patented thermosyphon & field-proven P&O™ bushings has two series --Type P&O™ I & II according to rated current. The current rated at 8000A and below is called Type P&O I, the current rated above 8000A is called Type P&O II. The Type II also has ANSI/IEEE series per C57.19.04. These two type bushings have thermosyphon design with heat exchange with main oil tank to dramatically reduce hotspot temp rise without any condenser paper but porcelain and oil. By end of 2025, there are 500,000+ pieces of P&O bushings in service world-wide.
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ZDTSEC
Solid epoxy cast (SEC) bushings for medium-voltage applications requiring compact, maintenance-free designs.
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