Eaton Cooper Power Series 38kV 200kV-BIL Bay-O-Net Fuse Assembly with Flapper Valve 4038380B03M for Solar & Wind Box-Transformer

Product Specifications

Product Name: Eaton Cooper Power Series 38kV Sidewall-Mounted Bay-O-Net Fuse Assembly

Rated Voltage: 38kV Class (200 kV BIL Full Wave Crest)

Rated Current: Suitable for 38kV Bay-O-Net Integral Cartridge Links (10A to 65A)

Type: 38kV Under-Oil Plug-in Fuse Tube Assembly (With Standard Flapper Valve)

Color: Black

Standard Models & Components

• 38 kV Silver-Plated Assembly with Inner Holder: 4038380B03M
• Replacement Inner Holder Only: 4000715B02M
• Replacement Outer Tube Only: 4037158C11M (Silver-plated, with contacts, gasket, and nut)

Material & Structural Characteristics

• Outer Tube Assembly: Molded high-temperature engineered thermo-plastic tube designed to withstand severe electrical stress.
• Terminals & Contacts: One-piece high-conductivity silver-plated copper terminals (Standard requirement for 38kV configurations).
• Contact Buttons: Independent silver-plated spring copper buttons featuring an anti-annealing design.
• Valve System: Standard integrated silver-plated Flapper™ valve mechanism to seal oil upon removal.
• Sealing Gaskets: High-performance multiple groove Nitrile rubber tank wall gasket ensuring a tight compression seal.

Product Functions

1. Specialized 38kV System Protection: Engineered exclusively for 38kV class pad-mounted or subsurface distribution transformers, providing premium deadfront safety and convenient hotstick operation.

2. Mandatory High-Current Coordination: Designed strictly for series coordination with a 38kV partial-range current-limiting backup fuse (such as ELSP) to safely isolate high-current internal transformer faults.

3. Automated Oil Environmental Control: Equipped with a standard heavy-duty Flapper™ valve that instantly snaps shut when the inner fuse cartridge holder is withdrawn, effectively preventing oil spillage, pad tilting sensitivity, and moisture ingress.

Key Features

1. 200 kV BIL Heavy-Duty Insulation: Delivers outstanding electrical dielectric strength, fully tested to withstand a 200 kV BIL lightning impulse and a 70 kV power frequency AC 1-minute test, far exceeding standard 23kV parameters.

2. Standard Silver-Plated Power Path: Features premium silver-plated terminals and contact buttons as standard to ensure maximum current-carrying capability, minimal temperature rise, and exceptional annealing resistance under heavy load.

3. Dual Gas Expulsion Ports: Features precision-molded internal gas ports within the thermo-plastic outer tube to rapidly direct and release arc gases during fuse operation, successfully preventing over-pressure and restrike.

4. Ergonomic Cam-Action Sealing: The stick-operable handle features a robust mechanical cam action that ensures a complete hermetic fluid seal when locked, and effortless insertion/removal during live field operation.

5. Reliable Tank状况 Sealing: Designed with a 7-degree tapered flange that properly compresses and retains the nitrile rubber seal against the tank wall, ensuring a 100% leak-proof installation.

Technical Parameter Specifications

• Max. Voltage: 38kV (200 kV BIL Full Wave)
• Interrupting Rating: 900A symmetrical for 10-40A links / 1,000A symmetrical for 65A links
• Model Number: 4038380B03M (Compatible with CA132006EN 38kV Fuse Links)
• Primary Applications: Renewable Energy (Solar/Wind) Box Transformers, Power Utilities, Industrial Substation Switchgear.
• Key Materials: High-Temperature Thermo-Plastic, Silver-Plated Copper Contacts, Nitrile Gaskets. Fully complies with standard IEEE and IEC electrical manufacturing specifications.