Nortel Networks 1000M warranty Small Candeo modules, Rectifier 30/48

Installing DC power Page 101 of 456

Small Candeo modules

The Candeo platform uses a combination of modules or building blocks to deliver custom configurations. The modules include:

•Rectifier 30/48

•Power shelves

•System Manager SP

•Distribution 300 panel

Rectifier 30/48

The Rectifier –48 V DC, 1500 W is a switch-mode rectifier that converts the single-phase AC source at the input into an isolated, filtered, and regulated DC power output (up to 30 A) used to feed the loads and to charge a positive grounded battery. These rectifiers are of the plug-in type to facilitate their installation, maintenance, replacement, and repair. Each rectifier is equipped with a cooling fan that is field replaceable.

Designed to operate at a nominal input voltage of 110/120 or 208/240 V AC, the rectifier will also operate over an input range of 75 V AC to 310 V AC (45 to 65 Hz) at reduced output power. The rectifier delivers full output power when operating in environments ranging between –40°C (–40°F) and 55°C (131°F).

The rectifier requires no adjustments. Under normal operation, operating parameters of the rectifiers in a system, such as float voltage and boost voltage, are entirely configured and controlled by the System Manager SP.

Power shelves

The Candeo SP48300 can have either one or two power shelves. The initial power shelf provides five rectifier positions and one system manager position, while the supplementary power shelf has six rectifier positions and an optional AC interface box for front access applications. Each rectifier position provides interconnection points for the AC input, the DC output, and the control and alarm data bus (CAN protocol).

The total output capacity of the system is 300 A. The output capacity of the initial shelf is 150 A (five rectifiers delivering 30 A each). The output

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