Eaton Cooper Power Series 15 kV 200 A Loadbreak Bushing Insert LBI215

Product Specifications

Product Name/Series: Eaton Cooper Power Series Loadbreak Bushing Insert (LBI215 Series)Maximum Rated System Voltage (Um): 15 kV Class (Perfectly optimized for standard 8.3/14.4 kV and below medium voltage distribution grids)

• Lightning Impulse Insulation Withstand (BIL): 95 kV Peak Crest Parameters.
• AC Power Frequency 1-Minute Withstand Voltage: 34 kV rms Symmetrical Baseline.
• DC 15-Minute Withstand Voltage: 53 kV Symmetrical Parameter.
• Minimum Corona Voltage Extinction Level: 11 kV (Partial discharge screened at strictly < 3 pC).

Continuous Base Current Capacity: Rated for 200 A rms continuous current carrying loops with reliable switching performance.Short Circuit Fault Current Withstand: Validated up to 10,000 A rms Symmetrical Peak for 0.17 second duration, and 3,500 A rms for 3.0 full seconds.Loadbreak Switching Performance: Rated for 10 consecutive switching operations at 200 A rms under a 14.4 kV system voltage baseline. 

Symmetrical Array & Voltage Configuration Matrix

The Eaton Cooper Power series 200A loadbreak infrastructure is tightly structured to provide flexible field installation and precise torque control across universal equipment interfaces:

• Universal Bushing Well Threaded Interface (3/8”-16 UNC): Utilizing heavy-duty copper threads to ensure low-resistance mechanical and electrical connections to standard bushing well studs.
• Internal Hex Broach Drive Layout (5/16” Hex): Precision-machined internal hex profile designed to pair with specialized installation torque tools, eliminating the risk of cross-threading or breaking equipment studs.
• Standardized IEEE 386 Interface Geometry: Engineered with 100% geometric dimensional interchangeability, seamlessly mating with any brand’s 200A 15kV class loadbreak elbow connectors built to the same standard.

 

Material & Structural Characteristics

• Direct-Molded Peroxide-Cured EPDM Rubber: Formulated, mixed, and molded entirely in-house to create a uniform, high-density insulation body that resists chemical oxidation and polymer tracking in severe environments.
• Semi-Conductive External EPDM Shielding Screen: High-quality outer skin that meets all IEEE Std 592™ requirements, remaining at absolute zero earth potential during live grid operation for 100% deadfront safe operator exposure.
• Uncomplicated All-Copper Current Path: Features an advanced one-piece design containing only one single internal current transfer point, delivering superior, low-loss long-term performance.
• Integral Piston-Contact Assembly: Utilizing a multi-point, knurled copper contact holder that forces the piston quickly forward during an accidental fault-close operation to securely engage the elbow probe.
• Molded-In Semi-Conductive Grounding Tabs: Features three integrated low-impedance grounding tabs molded directly into the outer shield for fast, secure attachment of copper earth drain lines.
• Bright Yellow Latch Indicator Ring: An exclusive molded-in circumferential ring on the collar that provides immediate visual feedback; when completely covered by the elbow, it eliminates guesswork by ensuring a 100% fully latched connection.

 

Product Functions

1. Advanced Loadbreak Arc Extinguishing: Equipped with an internal arc-snuffer assembly made of arc-ablative plastic that generates localized arc-extinguishing gas to safely quench electrical arcs during live loadbreak switching.2. Deadfront Hermetic Submersion Shielding: When mated with a comparably rated component, it establishes a 100% fully screened, fully submersible, and dust-tight cable connection link for underground and vault environments.3. Field-Replaceable Grid Flexibility: Threads directly into universal bushing wells, making field installation, system upgrading, and kit component replacement highly efficient without dismantling the internal equipment connections. 

Key Features

1. Zero Safe Phase Air Gap Requirement: Fully insulated deadfront geometry removes the need for standard phase-to-phase air separation clearances, dramatically down-scaling the total footprint of compact switchgear and padmount enclosures.2. Torque-Controlled Fast Field Deployment: No special tools are required; consistent and positive torque-controlled installation can be quickly achieved by hand or with an optional LBITOOL hex torque tool to prevent equipment damage.3. Non-Aging Bio-Fluid Chemical Compatibility: Formulated using premium EPDM polymers proven to maintain total structural stability and zero swelling when fully submersed in hot transformer mineral oil or plant-based Envirotemp FR3 fluids.4. 100% Factory Partial Discharge Certification: Every single production kit undergoes definitive automated quality testing, including 100% high-pC micro-volt corona screening, 1-minute AC withstand verification, and periodic fluoroscopic/X-ray integrity analysis.