|
Low Voltage Switchgear
If your voltage requirements fall in the "low voltage" range,
L-3 Communications/SPD Electrical Systems has the experience and products — unit substations, primary power circuit breakers, switching and interrupting apparatus, bus and cable conductors and other equipment — to respond to your needs.
All of our low-voltage, metal-enclosed products are designed to give you state-of-the-art protection, maximum flexibility and excellent reliability. They also require minimal maintenance and are very affordable. What's more, thanks to our 70 years of experience with low-voltage systems, we "know the territory" and can help you select the most appropriate components for your applications.
Individualized Solutions
DC Switchgear
What L-3 SPD Electrical Systems has done for the U.S. Navy — where we've been the long-time leader in providing DC switchgear from design to start-up, we can do for you.
We've designed and manufactured systems that have faced the harshest of conditions. That's the sort of experience we bring to your DC-switchgear challenges.
That means we're well prepared to design, manufacture, test and install your DC switchgear and circuit breakers in a full range of systems including circuit breakers in standard or semi-high speed design.
Individualized Solutions
Primary Voltage Switchgear
When it comes to primary voltage, L-3 SPD Electrical Systems knows how to analyze your application needs. L-3 SPD Electrical Systems is the only supplier of 5 kV switchgear to the U.S. Navy. We take into account such factors as method of electrical generation, total electrical load, system protection, backup features, etc. — all to help you determine the appropriate primary voltage level for your operation.
SPD will then develop and install a customized primary voltage system that responds to your unique demands.
Individualized Solutions
Load Center Switchboards
L-3 Communications Electronic Design (EDI) is under contract to design and produce the Load Center Switchboards, 400 Hertz Switchboards, Alarm Switchboards and 400 Hertz Circuit Breakers in Enclosures for the U.S. Navy's LPD 17 Class under construction at Litton/Avondale Industries and Bath Iron Works.
L-3 Communications Electronic Design (EDI) Load Centers consist of 16 free-standing switchboards (nearly half of them are comprised of 2 separate units) that distribute 60 Hz electrical power to individual systems throughout the ship and protect the electrical system from overload. Circuit breaker sizes in these switchboards range from 100 amps up to 4,000 amps. Eight of the Load Centers are instrumental in configuring the ship's main electrical bus as generators are brought online or shut down. Two of these provide the main circuit protection when the ship is in port and connected to shore power. All 8 of these also act as feeder switchboards to the remaining 8 and communicate with the Engineering Control System (ECS), relaying breaker status and bus electrical parameters. The Load Centers also act as isolators for battle casualties that may affect the ship's electrical system, supporting the fight-while-hurt philosophy.
The 400 Hertz Switchboards (3) distribute 400 Hz electrical power to those shipboard systems that require it and provide overload protection for the 400 Hz power conversion units. Two Control Panels provide a monitoring and control interface between the switchboards and the ECS.
The Alarm Switchboards are made up of 34 local annunciator panels located throughout the ship to alert personnel of abnormal conditions or unauthorized intrusion that may occur in various storage, accommodation and food preparation spaces.
The 400 Hertz Circuit Breakers in Enclosures (7 units) provide a protected power feed to the air cushion landing craft (LCACs) and helicopters being carried on board.
Individualized Solutions
| 
