The modular NetSure® 721 power system with 3500 watt rectifiers and 20 amp DC to DC converters provides up to 4000 amps of current for -48 volt systems with up to 480 amps at +24 volts. The basic components of the power system include the ACU+ control unit, module mounting shelf assemblies which house the rectifiers and converters, and a modular distribution cabinet.
The NetSure® 721 power system contains a powerful, microprocessor-based control system capable of monitoring and controlling up to 60 rectifiers. The ACU+ controller provides a 4x16-character alphanumeric display, which can be activated at the touch of a keypad.
The NetSure® 721 can be expanded to up to three distribution bays for a total capacity of 4000 amps and up to twelve distribution panels. Each NetSure® 721 distribution cabinet is modular by row and position. Four distinct distribution cabinet sizes are available to accommodate from one to four distribution panels. This allows the system to be configured in relay racks of various heights for installation in low-profile sites or atop batteries or other equipment to make more effective use of floor space. Several distribution panels are available offering different combinations of distribution positions, low voltage disconnect and battery disconnect options.
Distribution device options include 1 to 250 amp bullet-style circuit breakers, 3 to 125 amp TPS-style fuses in plug-in bullet-style holders, 100 to 800 amp GJ/218-style circuit breakers, 70 to 250 amp TPL-B style fuses and 70 to 800 amp TPH-style fuses. These devices can be configured for both -48V load and battery disconnect and +24V load (bullet devices only). A GMT fuse module is also available.