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Smart choice for power
Installation Guide
Inverter Stacking
Control Series
(ISC-S) Cable
www.xantrex.com
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Inverter Stacking Control Series (ISC-S) Cable Installation Guide
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About Xantrex Xantrex Technology Inc. is a world-leading supplier of advanced power electronics and controls with products from 50 watt mobile units to one MW utility-scale systems for wind, solar, batteries, fuel cells, microturbines, and backup power applications in both grid-connected and stand-alone systems. Xantrex products include inverters, battery chargers, programmable power supplies, and variable speed drives that convert, supply, control, clean, and distribute electrical power. Tr
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About This Guide Purpose The purpose of this Installation Guide is to provide explanations and procedures for installing the Inverter Stacking Control – Series Cable and provides information regarding stacking two identical Sine Wave Plus inverters. Scope The Guide provides safety guidelines, detailed planning and setup information for stacking inverters, and procedures for installing the ISC-S cable. Audience The Guide is intended for anyone who needs to install series-stacked, Sine Wave P
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About This Guide Conventions Used The following conventions are used in this guide. WARNING Warnings identify conditions that could result in personal injury or loss of life. CAUTION Cautions identify conditions or practices that could result in damage to the unit or other equipment. Important: These notes describe things which are important for you to know, but not as serious as a caution or warning. Abbreviations and Acronyms The following acronyms and abbreviations are used in this guide: A
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Important Safety Instructions WARNING This chapter contains important safety and operating instructions. Read and keep this Installation Guide for future reference. 1. Before installing and using the ISC-S cable, read all instructions and cautionary information in this guide. 2. Do not expose the ISC-S cable to rain, snow, spray, or water. 3. Use only attachments recommended or sold by the manufacturer. Doing otherwise may result in a risk of fire, electric shock, or injury to persons. 4. Do
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Contents Important Safety Instructions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -v 1 Introduction Stacking Inverters - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–2 The ISC-S Cable - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–5 2 Installation DC Wiring - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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Figures Figure 1-1 Off-Grid Applications with Series-Stacked Inverters- - - - - - - - - - - - - - - - - - - - - - - - - 1–3 Figure 1-2 On-Grid Applications with Series-stacked Inverters - - - - - - - - - - - - - - - - - - - - - - - - - 1–4 Figure 1-3 Inverter Stacking Control – Series Cable (ISC-S cable) - - - - - - - - - - - - - - - - - - - - - - - 1–5 Figure 2-1 Example of Battery Connections for Series-stacked Inverters (24 Vdc shown) - - - - - - - 2–2 Figure 2-2 DC Grounding of Series-stacke
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Introduction 1 Chapter 1, “Introduction” provides information on stacking of Sine Wave Plus inverters. The following topics are covered in this chapter. For this topic: See: “Stacking Inverters” page 1–2 “The ISC-S Cable” page 1–5
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Introduction Stacking Inverters Two identical, series-stacked, inverters can be connected together for the following purposes. The voltage output of a single inverter is insufficient to power the 240 Vac loads attached to the system; Multi-wire branch circuits exists in the current structure. Please see Appendix F, “Multi-wire Branch Circuit Wiring”, in the Sine Wave Plus Owner’s Manual for additional information. Important: Inverter types and models must be identical for stacking confi
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Stacking Inverters Figure 1-1 Off-Grid Applications with Series-Stacked Inverters 975-0059-01-01 Rev A 1–3
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Introduction Figure 1-2 On-Grid Applications with Series-stacked Inverters 1–4 975-0059-01-01 Rev A
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The ISC-S Cable The ISC-S Cable Required accessory Stacking two identical inverters requires the use of the Inverter Stacking Control – cable Series Cable (ISC-S cable). The ISC-S cable is a special cable specifically designed for series-stacking two identical inverters. It consists of one 36-inch stacking control cable with two 25-pin D connectors. It connects to the “Stacking Ports” on the respective inverters and allows the AC output of two (identical) inverters to provide both 120 and 2
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What it The ISC-S cable provides communication between the two stacked inverters for two does purposes. It provides synchronization information for inverting and charging. It provides a method for one inverter detecting an error condition to send a shut- down command to the other inverter, to prevent a 240Vac load from only receiving one leg of power. What it The ISC-S cable does not allow programming or access to the display from one inverter does not do to the other. If there are change
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Installation 2 Chapter 2, “Installation” provides information on installing the DC wiring, AC Wiring, and the ISC-S for Sine Wave Plus inverters. The following topics are covered in this chapter. o r thi F s topic: See: “DC Wiring” page 2–2 “AC Wiring - General” page 2–6 “AC Wiring - Specific” page 2–8 “Connecting the ISC-S Cable” page 2–16
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Installation DC Wiring The success of series-stacked, inverter systems is dependent on the quality and maintenance of the DC connections. Stacked inverter sets are far less forgiving to long, undersized, uneven, and/or poor connections than are single inverters. Battery Requirements for Series-stacked Inverters When inverters are “stacked” they must operate from a common battery bank. In other words, the DC negative of one inverter must be common with the second inverter and likewise for th
