Eaton Cooper Power Series BW150R Tri-Clamp Bushing Well 200A 35kV with Removable Copper Stud for Pad-Mounted Transformer

Product Specifications

Product Name/Series: Eaton Cooper Power Series 200A 35kV Tri-Clamp Bushing Well with Removable Stud (BW150R)

Maximum Rated System Voltage (Um): 35 kV Class (Perfectly optimized for regional and international power grids rated at either 8.3/14.4 kV, 15.2/26.3 kV, 16.2/28.0 kV, or 21.1/35 kV lines)

• Lightning Impulse Insulation Withstand (BIL): 150 kV Full Wave Crest Parameters.
• AC 60 Hz 1-Minute Withstand Voltage: 50 kV rms Symmetrical Baseline.
• DC 15-Minute Withstand Voltage: 103 kV Symmetrical Baseline.
• Minimum Corona Voltage Level: 26.0 kV with strict zero-discharge verification.

Continuous Base Current Capacity: Rated for 200 A rms continuous current carrying loops utilizing an optimized heavy-duty solid copper conducting medium.

Short Circuit Fault Current Withstand: Validated up to 10,000 A rms Symmetrical for 0.17 seconds and 3,500 A rms Symmetrical for 3.0 full second durations.

Apparatus Installation Dimensions:Sized perfectly for a standard 2.50 inch shank diameter to fit a 2.56 inch (65 mm) minimum transformer tank opening hole plate.

Apparatus Clamping & Field Replacement Matrix

The Eaton Cooper Power series 35kV tri-clamp infrastructure is built around a heavy-duty composite architecture designed to simplify field maintenance without sacrificing connection strength:

• Removable Threaded Stud Assemblies (BW150R): Equipped with an external 3/8″-16 UNC-2A thread on the insert side and an internal 7/16″-14 UNC-2B thread on the apparatus side, allowing fast replacement in case of mechanical shearing.
• Fixed Stud Assemblies (BW150F Series): Precision-calibrated with a permanent knurled copper core for standard long-term infrastructure installations that require fixed grid component pathways.
• Integrated Molded Bail Tabs: Formed directly into the tri-clamp body frame to allow the secure anchoring of feedthru items and loadbreak elbows without additional external steel brackets.

Material & Structural Characteristics

• Molded High Temperature Nylon (Zytel HTN): Specialized polymer compound formulated to provide extreme mechanical strength, high thermal stability, low moisture absorption, and excellent retention of electrical insulation properties in hot, humid environments.
• Corrosion-Proof Clamp-Less Profile: Eliminates the requirement for heavy external stainless steel or zinc-plated clamps, preventing rust deterioration on pad-mounted transformers near marine or chemical zones.
• Knurled Copper Stud with Rolled Threads: High-conductivity copper layout provides high mechanical torque thresholds and reduces local electrical resistance across the current pathway.
• 7/64-Inch Internal Broken Stud Extraction Hex: Engineered with an accessible internal hex profile inside the insert mating cavity, enabling quick field extraction using a standard 5/8-inch socket wrench if a mechanical failure occurs.
• Resilient Buna-N Rubber Sealing Gasket: Supplied complete with a highly resilient gasket profile matching the engineered tight-containment groove surfaces to deliver uniform, leak-free compression against the inner shank wall.
• Factory-Provided Shipping Cap Protection: Every kit comes complete with a secondary robust plastic shipping cap pre-installed over the taper opening to block dust, humidity, and construction residue.

Product Functions

1. Hermetic Oil-Apparatus Sidewall Balancing: Serves as a rugged primary connection barrier that seals transformer mineral oil or plant-based Envirotemp FR3 bio-fluids while passing primary windings through the front faceplate panel.

2. Tool-Assisted Rapid Field Remediation: Minimizes substation downtime by allowing technicians to replace stripped or broken conductor threads right at the installation wall, removing the need to drain tank fluids or open transformer lids.

3. Universal Loadbreak Connector Interfacing: Operates as a heavy-duty receptacle that fits all international 200 A loadbreak inserts, feedthru connectors, and grounding devices complying with global grid benchmarks.

Key Features

1. 100% Metal Clamp Elimination: Advanced tri-clamp molded footprint delivers uniform mechanical holding pressure while completely removing iron oxidation failure risks in chemical utilities or wind cluster pads.

2. Certified IEEE Std 386 Structural Alignment: Fully compliant with the requirements of the latest standard revision, assuring absolute cross-brand connection intermateability with all certified grid components.

3. Advanced Factory Testing Quality Controls: Every production block undergoes definitive quality testing procedures including thorough physical surface inspection, periodic internal dissection, and non-destructive automated fluoroscopic X-ray analysis.