Delta manual Product Description, DELTA MCS-1800 3U Power Shelf, Product Main Features

DELTA MCS-1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

2 Product Description

2.1Product Description

This power Shelf consists of modular rectifiers, an Alarm Control Unit (ALU), and a DC distribution module. Up to four rectifiers and an alarm unit can be equipped on a shelf containing an integrated distribution module. The rectifiers can operate from a universal range of AC line voltages. The High Line (HL) operations are defined at an AC line input range of 165VAC~ 264VAC. The Low Line (LL) operations are defined at an AC line input range of 90 VAC-130 VAC.

The system is controlled and monitored by the ALU. System level rectifier voltage settings, system status, and alarms are displayed on the ALU. The system float voltage, equalize voltage, and alarm thresholds are set from RMS. The ALU also provides automatic derating of the output power over the whole operating line voltages. Figure 1 shows different functional blocks of the system.

2.2Product Main Features

The Power Shelf has the following main features:

-48 VDC/120 Amps, or +24VDC/200Amps, N+1 redundancy Modular design for scalable, cost effective expansion

Front access for simple installation and maintenance High power density

Active Power Factor Correction (>. 99PFC) High efficiency

Temperature compensated float voltage control Alarm Control Unit

Low Voltage Battery Disconnect (LVBD) (System equipped with PDU) Remote Monitoring and control

2.3System Specifications

The system specifications are provided in the following sections.

2.3.1 -48V Standard Power Shelf Configuration(MODUL NAME: ES48/120-JAAxx)

(1)	AC Input:	175VAC ~ 275VAC, 48Amps. Max
(2)	System Capacity:	120Amps. Max.
(3)	Rectifier:	-48V/30A×1~4

(4)Control and Supervisory Unit Figure 1 shows a front view of shelf.

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