Introduction

HVL/cc™ medium voltage, metal-enclosed switchgear from Schneider Electric provides switching, metering, and interrupting capabilities for medium-voltage electrical power distribution systems.

It is designed to provide increased electrical and mechanical life and it improves reliability by reducing the number of bus connections and using new switch technology. HVL/cc is designed for simplified system expansion and reduces equipment expense for systems ranging from 2.4 to 38.0 kV, 60 to 150 kV BIL. This switchgear is noted for its versatility, durability, and convenience. It can function as service entrance equipment and for controlling substation transformers, and is designed and manufactured in accordance with NEMA®, CSA®, UL®, and ANSI®/IEEE® standards C37.20.3, C37.20.4, C37.57, C37.58, CSA 22.2 no. 31, and CSA 22.2 no. 193, where applicable.

Made up of modular units, the HVL/cc is configured for expansion purposes. Two main bus positions allow future extensions and connections to existing equipment.

HVL/cc switchgear is available in either single or multiple section units. To simplify handling and installation, each section is assembled before shipping. The design is compact, with front access only options available at system voltages below 17.5 kV.

The HVL/cc switch can be equipped with either an over-toggle mechanism (OTM), which is standard, or an optional stored energy mechanism (SEM). An option with both mechanisms is the Fuselogic™ system. The Fuselogic system offers fuse tripping (with SEM) to provide protection against single phasing loads when a fuse has blown. It also has a mechanical interlock to minimize chances of inadvertent switching until fuses are installed or blown fuses are replaced (see additional details in Standard Features). An optional blown fuse flag is available with either an OTM or an SEM. The Fuselogic system on the OTM offers a Form “C” 1 N.O.-1 N.C. auxiliary contact in addition to the blown fuse flag.

Mechanical interlocks are standard to inhibit the removal of the load-side panel while the load interrupter switch is closed and/or the optional ground switch is open.

HVL/cc switchgear is available in both indoor and outdoor enclosures. Each type has features for convenience, reliability, and durability.

Indoor switchgear includes lifting angles at the top corners of each shipping section for ease in handling, provisions for expansion, an 11-gauge steel enclosure, full-length ground bus in multiple section enclosures, and padlocking provisions for the load-side panel. Optional features include key interlocking and clear windows for inspection of the optional Load-side Discharge Assembly (LDA).

The outdoor switchgear is constructed with a rear-sloping roof, a steel base and 11-gauge steel enclosure, gasketed front doors, and strip heaters in each switch section. Operating handles are enclosed by outer bulkhead type doors.

Where available, HVL/cc front access only enclosures can be positioned against walls, in small rooms, or in prefabricated buildings. The small footprint can result in considerable cost savings from the reduction of building or room sizes.

Meter sections are available in both hot and cold sequence designs for utilities and/or customer requirements (contact the factory for dimensions and availability).

Special utility metering sections are available as with our conventional HVL Metal-Enclosed switchgear.