Eaton Cooper Power Series DB635B200GCXC Deadbreak Apparatus Bushing 600A 35kV 200kV BIL Aluminum Conductor for Pad-Mounted Transformer

Product Specifications

Product Name/Series: Eaton Cooper Power Series 600A 35kV Deadbreak Apparatus Bushing (DB635B200GCXC)

Maximum Rated System Voltage (Um): 35 kV Class (Perfectly optimized for standard 35 kV systems rated up to 21.1 kV Line-to-Ground distribution grids)

• Lightning Impulse Insulation Withstand (BIL): 200 kV Full Wave Crest Parameters.
• AC Power Frequency 1-Minute Withstand Voltage: 70 kV rms Symmetrical Baseline.
• DC 15-Minute Withstand Voltage: 114 kV Symmetrical Baseline.
• Minimum Partial Discharge Level: 26 kV with strict zero-discharge verification.

Continuous Base Current Capacity: Rated for 600 A rms continuous current carrying loops utilizing a premium high-conductivity aluminum core connection path.

Short Circuit Fault Current Withstand: Validated up to 25,000 A rms Symmetrical for 0.17 seconds and 10,000 A rms Symmetrical for 3.0 full seconds duration.

Cable Cross-Section Accommodations: Designed for standard sidewall mounting through an apparatus tank hole diameter opening of 2.56 inches (65 mm), supporting a maximum tank wall thickness profile of 0.25 inches.

Symmetrical Array & Voltage Configuration Matrix

The Eaton Cooper Power series 600A deadbreak apparatus bushing infrastructure is tightly structured across dedicated insulation and material codes to handle distinct grid characteristics:

• High-BIL Red Bushing Layouts (DB635B200 Series): Utilizing specialized formulations rated for 200 kV BIL to provide superior dielectric margin in harsh industrial substations and utility branching circuits.
• Standard-BIL Black Bushing Layouts (DB635B150 Series): Precision-calibrated to deliver standard 150 kV BIL performance for domestic and import underground heavy industrial networks.
• Copper Conductor Core Layouts (DB935B Series): Upgraded heavy-gauge core configurations engineered to carry up to 900 A continuous current loop streams for high-load grid setups.

Material & Structural Characteristics

• Direct-Molded Specialized Epoxy Compound: 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.
• Integrated Internal Ground Screen Clip: Heavy-duty molded-in grounding clip that establishes a continuous reliable link to the internal ground plane shield, connecting via the bushing clamp to ensure safe operator exposure.
• Heavy-Gauge Dual 5/8-11 UNC Threaded Stud End: High-torque threaded hardware ensures low contact resistance and eliminates thermal drift under constant transformer vibration during long-term distribution cycles.
• Engineered Apparatus Sidewall Gasket Groove: Features integrated, low-impedance sealing surfaces pre-molded into the flange body to allow fast, leak-free compression of nitrile gaskets on tank wall plates.
• Factory-Provided Rugged Shipping Cap Protection: Equipped with a watertight protective secondary cap over the front female taper to protect internal insulation paths from dust, debris, and moisture intrusion during transit.

Product Functions

1. High-Voltage Primary Winding Line Transition: Establishes a rugged, insulated pathway for primary winding leads to pass from inside the oil tank to the exterior front plate panel safely.

2. Deadfront Hermetic Submersion Shielding: Establishes a 100% fully screened, fully submersible, and dust-tight cable connection link that operates safely even under long-term direct water submersion.

3. Sectionalizing Grid Isolation Flexibility: Serves as a versatile disconnect terminal block; its standard external taper interface can be safely sealed with protective caps or expanded with surge arresters and loadbreak components.

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 switchgear enclosures.

2. Tool-Free Quick Field Deployment: Requires no specialized hydraulic field-heating or chemical wrapping tapes; the entire component block is ready for full-load energization immediately after securing the external clamping brackets.

3. Non-Aging Bio-Fluid Chemical Compatibility: Formulated using premium polymers proven to maintain total structural stability and zero swelling when fully submerged in hot transformer mineral oil or plant-based Envirotemp FR3 fluids.

4. 100% Factory Quality Certification: Every production unit undergoes definitive quality screening tests including thorough physical inspection, periodic 150/200 kV impulse withstand testing, periodic dissection, and non-destructive fluoroscopic X-ray analysis.