1.2kV 417A ANSI Standard Porcelain Transformer Bushing With 2-Hole Spade

| Company Profile

Nanjing Rainbow Electric Co., Ltd. (NJREC) stands as a premier manufacturer and supplier of specialized transformer bushings and electrical insulators. For decades, we have engineered reliable insulation solutions tailored for transmission lines, substations, and complex grid infrastructures. Our comprehensive portfolio serves as a one-stop procurement hub for distribution transformers, power transformers, pad-mounted systems, and wall-mounted applications.

We operate under a strict philosophy of engineering precision and structural integrity. Every component leaving our facility is backed by a rigorous quality management system, holding authoritative third-party certifications including ISO 9001, SGS, and TUV. By strictly adhering to international regulatory frameworks such as ANSI, IEEE C57.19.01, and IEC 60137, we ensure that our global partners receive components that mitigate operational risks, eliminate compliance hurdles, and extend the lifecycle of their critical electrical assets.

| Product Description

Our porcelain insulators are manufactured in one-piece constructions reaching up to 2800mm in length, fully compliant with IEC, ANSI, and customer-specific operational standards. Available in cylindrical, conical, or straight configurations, they are engineered to withstand significant mechanical stresses, including intense internal pressure and sustained cantilever forces.

This specific 1.2kV 417A ANSI-standard porcelain transformer bushing, featuring a heavy-duty 2-hole spade design, acts as a linchpin in power-transfer systems. Beyond its foundational specifications, this component integrates advanced material science and structural engineering to deliver decades of uninterrupted service.

Core Materials and Sensory Precision

The main body is cast from high-grade electrical porcelain, featuring a smooth, non-porous glazed finish that naturally repels water and prevents the accumulation of conductive contaminants. The central conductive rod is machined from pure, solid copper, providing a distinctively heavy, dense feel that guarantees superior electrical conductivity and minimal heat generation under peak loads. All external connectors are crafted from galvanized brass to resist oxidation, while the sealing system utilizes premium oil-resistant NBR gaskets, ensuring a tight, compressive fit that secures the internal environment.

Electrical Insulation and Mechanical Fortitude

• Dielectric Excellence: Exhibits exceptional dielectric strength and an optimized Basic Insulation Level (BIL) to handle severe lightning impulse voltages. Partial discharge is strictly suppressed to below 5pC, safeguarding the entire grid from micro-arcing.
• Structural Durability: Proven through brutal cantilever load and seismic simulation tests. The bushing easily absorbs mechanical shocks and thermal cycling, resisting micro-cracking even during extreme temperature fluctuations in outdoor environments.
• Oil-Tight Sealing: The optimized creepage distance enhances anti-pollution flashover capabilities, while the weather-grade NBR sealing materials create a permanent, oil-tight barrier, resulting in a virtually maintenance-free operational life.
• Complete Installation Kits: Shipped with a comprehensive set of mounting accessories, including precision-threaded nuts and lock washers that provide a satisfying, secure engagement during assembly. We also offer extensive non-standard customization for unique voltage ratings, specific mounting dimensions, and extreme environmental adaptations.

| Data Sheet

The following technical matrix details the exact electrical and dimensional parameters for our bushing series. Each value, from the 1.2KV voltage rating to the precise connector sizes, represents a strictly verified specification. Procurement engineers can rely on these exact figures for accurate integration into distribution transformers and specialized switchgear. There is zero deviation in the physical dimensions or current capacities, ensuring perfect compatibility with existing ANSI-standard infrastructure.

| Factory Pictures

Visualizing the origin of your components provides confidence in their field performance. Inside our manufacturing hub, precision meets heavy industrial capability. Before any 1.2kV 417A ANSI bushing is cleared for dispatch, it undergoes a gauntlet of 100% mandatory inspections in our testing laboratories. This includes subjecting the units to intense lightning impulse voltage (BIL) strikes, sustained power frequency withstand tests, and severe thermal cycling. We maintain a pristine, highly organized production environment where every batch generates a fully traceable factory inspection report, guaranteeing that the physical product matches the engineering promise.

| Product Applications

As a critical component in complex electrical infrastructure, ANSI bushings are essential for the safe, continuous operation of power transformers and heavy-duty circuit breakers. They ensure a highly reliable integration between sensitive internal transformer components and demanding external grid connections. By providing dependable, leak-proof insulation protection, these bushings are vital for both large-scale utility transmission projects and localized industrial distribution networks. Whether deployed in coastal substations facing salt fog or industrial zones with heavy airborne particulates, the optimized surface geometry actively prevents tracking and flashovers.

| Products Packages

The physical journey from our factory floor to your installation site requires uncompromising protection. Electrical porcelain, while incredibly strong under compression, requires specialized handling to prevent impact fractures. We utilize heavy-duty export wooden crates, reinforced internally with custom-molded, shock-absorbing foam and moisture-barrier wrapping. This multi-layered packaging strategy ensures that the heavy pure copper spades and the delicate ceramic skirts arrive in pristine condition, completely free from micro-cracks, moisture ingress, or transit-induced abrasions, allowing your engineering teams to proceed directly to installation.