NEC ALM 12V7 s-Series User Manual

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NEC ALM 12V7 s-Series User Manual Manual pdf 18 page image

406014-02EN, Rev. 05 © 2016 NEC Energy Solutions, Inc. All rights reserved. Page 18 of 49This document contains the proprietary information of NEC Energy Solutions, Inc. (“NECES”) and may not be modified,reproduced, retransmitted or redistributed, either in whole or in part, for any reason without NECES’ prior written consent.ALM ® 12V7 s-Series User’s Guide Chapter 3: Handling, Storage and InstallationTerminal SpecificationsALM 12V7 s-Series batteries use copper terminals with tin plating. The terminals have amaximum operating temperature rating of 90 °C. They are intended to mate with standardfemale 0.25 inch (6,35 cm) “quick connect” terminals (TE Connectivity FASTON orequivalent). Attach cable by inserting connector fully until the round locking detent hasengaged the center hole.Configuring Batteries in Series StringsTo achieve higher operating voltages, arrange the ALM 12V7 s-Series batteries in seriesstrings by connecting the positive terminal of one battery to the negative terminal of the nextbattery, as shown in Figure 3.NOTEThe following battery string wiring examples provide general configuration information. Actual wireconfigurations must be evaluated for their particular application.The array voltage can be calculated as follows:• Two batteries in series: 2 x 13.2 V = 26.4 V (nominal) for 24 V applications• Three batteries in series: 3 x 13.2 V = 39.6 V (nominal) for 36 V applications• Four batteries in series: 4 x 13.2 V = 52.8 V (nominal) for 48 V applicationsThe maximum number of ALM 12V7 s-Series batteries that may be connected in series isfour.Figure 3 illustrates three ALM 12V7 s-Series batteries connected in a three-series, one-parallel (3S1P) configuration.Figure 3 Three ALM 12V7 s-Series Batteries Connected in Series Creating a 3S1P Configuration