The new 38kV 25kA Current-Limiting Molded Vacuum Interrupter (MCLVI) was designed for use in wind farm towers as large as 3MVA. The unit incorporates Elastimold's proven combination of EPDM molded insulation with a current-limiting fuse and vacuum interrupter. This addition to our solid-dielectric family of switchgear utilizes a vacuum interrupter to clear low-magnitude faults in series with a Hi-Tech® current-limiting fuse to clear higher-magnitude faults, substantially reducing energy let-through. The unit includes our current sensor and internal controls. If a single current-limiting fuse clears a fault, the MVI will sense an imbalance and trip to prevent single phasing.
The small, lightweight unit is maintenance-free and environmentally friendly, containing no gas or oil, and is also available for subsurface, vault, padmount or riser-pole applications. Choose a stacked (as shown), linear or back-to-back arrangement. When used for transformer protection, the fuses can be coordinated with the vacuum interrupter so that the fuses will only operate in the event of a transformer failure.
For more information about the 38kV 25kA Current-Limiting Molded Vacuum Interrupter, visit utility.tnb.com or contact your Thomas & Betts sales representative by calling (800) 326-5282.
About Thomas & Betts
Thomas & Betts Corporation (www.tnb.com) is a leading designer and manufacturer of electrical components used in industrial, commercial, communications and utility markets. The company is also a leading producer of commercial heating and ventilation units and utility transmission structures. Headquartered in Memphis, Tenn., the company has manufacturing, distribution and office facilities worldwide.