Eaton Cooper Power Series 23kV 150kV-BIL Bay-O-Net Fuse Assembly 4000361C99FV / 4001177B51MC for Power Utility & Subsurface Substation

Product Specifications

Product Name: Eaton Cooper Power Series 23kV Sidewall and Cover Mounted Bay-O-Net Fuse Assembly

Rated Voltage: 23kV Class (150 kV BIL Full Wave Crest)

Rated Current: 200A Max Continuous Current (Suitable for 23kV Fuse Links from 3A to 140A)

Type: 23kV Under-Oil Plug-in Fuse Tube Assembly (With Flapper / Non-Flapper Options)

Color: Black

Standard Models & Assembly Options

• 23 kV Flapper Sidewall-Mount (Standard Row): 4000361C99FV
• 23 kV Sidewall-Mount without Flapper Valve: 4000361C99MC
• 23 kV Cover-Mount (Short Style, Length 13.62″): 4001177B51MC
• 23 kV Cover-Mount (Long Style, Length 16.37″): 4001177B53MC
• Premium Silver-Plated Assembly (For High Ampere Overload): 4000361C89FV / 4038804B03M

Material & Construction Detail

• Outer Tube Body: High-temperature electrical grade engineered thermo-plastic housing.
• Terminals & Contacts: High-purity pure copper or premium silver-plated copper configurations.
• Contact Buttons: Independent spring copper or silver-plated buttons featuring excellent annealing resistance.
• Valve Mechanism: Optional integrated Flapper™ valve (Available for horizontal sidewall-mount models only).
• Sealing Gaskets: High-reliability multiple groove Nitrile rubber seals and tight tank wall gaskets.

Product Functions

1. System Overload & Fault Protection: Designed for use in pad-mounted or subsurface distribution transformers to reliably protect both single-phase and three-phase apparatus from damaging overload currents.

2. Mandatory Two-Fuse Coordination: Operates in series with an isolation link or partial-range current-limiting backup fuse (such as Eaton Cooper ELSP) to handle low-current clearing while safely shielding against catastrophic high-current internal faults.

3. Live Line Loadbreak Operation: Combines hotstick-operable convenience with complete deadfront construction safety, allowing line personnel to easily change distribution voltage, adjust tap changers, or disconnect the transformer from live lines.

Key Features

1. 150 kV BIL Dielectric Strength: Fully compliant with standard utility electrical ratings, engineered to reliably withstand a 150 kV BIL lightning impulse and a 50 kV power frequency AC 1-minute test under normal oil level conditions.

2. Massive 200A Current Capacity: When paired with silver-plated terminals and high ampere overload links, the assembly allows the safe, reliable fusing of larger single-phase and three-phase kVA transformers.

3. Automated Oil Environmental Control: The optional Flapper™ valve automatically snaps closed upon inner fuse cartridge holder removal, minimizing oil spillage, protecting molded rubber elbow connections, and reducing pad tilting sensitivity.

4. Precision Arc Suppression: Features built-in internal gas expulsion ports and a high-strength fuse cartridge to safely direct and instantly extinguish generated gases during fault interruption, successfully preventing restrike.

5. Versatile Mounting Configurations: Offers ultimate engineering flexibility with standard horizontal sidewall-mounts and vertical cover-mounts (available in both short and long assembly lengths) to fit any transformer tank dimensions.

Technical Parameter Specifications

• Max. Voltage: 23kV Class (150 kV BIL)
• Interrupting Rating: 3,500A rms symmetrical at 8.3kV / 2,500A rms symmetrical at 15.5kV / 1,000A rms symmetrical at 23.0kV
• Model Ranges: 4000361C99FV / 4000361C99MC / 4001177B51MC
• Primary Applications: Pad-mounted Distribution Transformers, Subsurface Switchgear, Renewable Energy Wind/Solar Box Substations.
• Key Materials: High-Temperature Engineered Thermo-Plastic Outer Tube, Pure Copper/Silver-Plated Contacts, Nitrile Rubber Seals. Fully complies with standard IEEE overcurrent protection guidelines.