The APC-3000-R series of front end power shelves is designed to operate as a key element in a complete distributed power system. It is a very low profile 1U high (43.4mm or 1.71") subassembly that mounts into a 19" rack.

The power shelf mates to a commercial power grid and when assembled with power modules, generates a precisely regulated DC bus voltage.

This power shelf can house up to three APC-1000 power modules and provides protection and a number of alarm and control features. This product is intended for integration into end-use equipment.

The power shelf can supply up to 2000W of N+1 redundant power or up to 3000W of total power depending on configuration of power modules. Four stacked shelves can provides up to 12,000W of total power.

• Rack mount chassis (19" wide, 1U high)
• 1U, 2U, 3U & 4U stackable for higher wattage power - up to 12,000W
• Parallel operation which can house up to 3 x APC-A1000 series power modules
• Up to 2000W of N+1 redundant operation
• Configurable local and remote sense of output bus voltage
• Power fail warning & fault alarm
• Compatible with worldwide power sources (Universal AC Input)
• I²C optional
• Hot Swap
• Local and Remote Monitoring Control

The APC-3000-R series of power shelves can be used with any standard global line voltages. The standard AC input connection to the shelf is through three IEC320 type connectors rated at 10A / 250VAC in Europe / Asia and 15A / 120VAC in North America.

The shelf has two terminal blocks for DC output - each with three M4 screws. They are labeled V and V-, respectively, on the body of the terminal block. The V+ and V- are floating with respect to the frame GND. Frame GND may be floated or connected to either bus depending upon the customer requirements for positive bus or negative bus.

The power shelf has an optional DSB, 25-pin, female interface connector on the back. The power system can be monitored and controlled through this interface.

The APC-A1000 series power shelf is intended for operation with the APC-3000-R series power modules. These modules convert the AC input power to a regulated, low-noise DC bus voltage. Modules are available with 750W, 800W, or 1000W.

Oring diode is used at the output of each module to prevent the module from bringing down the bus voltage either during hot insertion or as the result of a module fault. The connectors between the power module and the shelf are selected to prevent from blind mating and support hot insertion and removal. Active current sharing between paralleled modules and shelves distribute the load evenly between multiple power units.

FAULT AND STATUS REPORTING
The APC-AXXX series of power modules provide a number of status report and remote control features. Those signals are aggregated on the host interface on the back of the shelf. Please refer to the module's data sheet for a detailed definition of each signal. Host interface is optional for the shelf.

FAULT MANAGEMENT
The modules are fully protected from damaging ether the load or themselves under single fault or abnormal operating conditions.

VISUAL INDICATORS
Each power module (APC-A1000 or APC-800) has two LEDs to provide visual status information. Please see the following table for these indicators.

EMI PERFORMANCE
The shelf with meet CISPR Class B, conducted emissions - EN55022 stand-alone.