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Xantrex power Inverter Stacking Installation Manual

Inverter stacking control series cable
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Smart choice for power
Installation Guide
Inverter Stacking
Control Series
(ISC-S) Cable
www.xantrex.com

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  Summary of Contents for Xantrex power Inverter Stacking

  • Page 1 Smart choice for power Installation Guide Inverter Stacking Control Series (ISC-S) Cable www.xantrex.com...
  • Page 3 Inverter Stacking Control Series (ISC-S) Cable Installation Guide...
  • Page 4 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.
  • Page 5: About This Guide

    About This Guide Purpose The purpose of this for installing the information regarding stacking two identical Sine Wave Plus inverters. Scope Guide stacking inverters, and procedures for installing the Audience Guide Plus inverters using the be certified technicians or electricians. Organization This Guide...
  • Page 6 The following acronyms and abbreviations are used in this guide: DCCB ISC-S cable Related Information You can find more information about Xantrex Technology Inc. as well as its products and services at www.xantrex.com These notes describe things which are important for you to Alternating Current...
  • Page 7: Important Safety Instructions

    Important Safety Instructions WARNING This chapter contains important safety and operating instructions. Read and keep this Installation Guide 1. Before installing and using the cautionary information in this guide. 2. Do not expose the 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.
  • Page 9: Table Of Contents

    Contents Important Safety Instructions 1 Introduction Stacking Inverters - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–2 The ISC-S Cable - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–5 2 Installation DC Wiring - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–2...
  • Page 10 viii...
  • Page 11 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 –...
  • Page 13: Introduction

    Introduction Chapter 1, “Introduction” Wave Plus inverters. The following topics are covered in this chapter. provides information on stacking of Sine For this topic: “Stacking Inverters” “The ISC-S Cable” See: page 1–2 page 1–5...
  • Page 14: Stacking Inverters

    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.
  • Page 15: Figure 1-1 Off-Grid Applications With Series-Stacked Inverters

    Stacking Inverters Figure 1-1 Off-Grid Applications with Series-Stacked Inverters 975-0059-01-01 Rev A 1–3...
  • Page 16: Figure 1-2 On-Grid Applications With Series-Stacked Inverters

    Introduction Figure 1-2 On-Grid Applications with Series-stacked Inverters 1–4 975-0059-01-01 Rev A...
  • Page 17: The Isc-S Cable

    The ISC-S Cable Required accessory Stacking two identical inverters requires the use of the cable Series Cable (ISC-S 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”...
  • Page 18 What it ISC-S cable 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.
  • Page 19: Installation

    Installation Chapter 2, “Installation” DC wiring, AC Wiring, and the ISC-S for Sine Wave Plus inverters. The following topics are covered in this chapter. provides information on installing the F o r t h i s t o p i c : “DC Wiring”...
  • Page 20: Dc Wiring

    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”...
  • Page 21: Grounding Series-Stacked Inverters

    Grounding Series-stacked Inverters To ground series-stacked inverters: 1. Connect the ground bond in the DC disconnect between the inverters and the batteries to the primary grounding electrode, in accordance with local and national electrical codes. 2. Connect an appropriately sized ground wire from the chassis bonding ground lug on the L1 inverter DC end to the ground bond inside the DC disconnect.
  • Page 22: Connecting The Battery Bank To The Inverters

    Installation Connecting the Battery Bank to the Inverters The following instructions are illustrated in To connect the battery (or battery bank) to the inverters: 1. Connect POSITIVE cables: a) one cable from the battery POSITIVE terminal to a circuit breaker in the b) a second cable from the same battery POSITIVE terminal to another c) a third cable from the first circuit breaker in the DC disconnect to the d) a fourth cable from the second DC disconnect to the L1 inverter...
  • Page 23: Figure 2-3 Dc Connections For Dual Inverters, Series-Stacked

    xantrex 0 1 A I n v e r t e r O F F S R C H O N C H G I N V G E N ON / O F F ME N U ME N U H E A D I N GS xantrex S ine Wave P l us I nverter/ Charger...
  • Page 24: Ac Wiring - General

    Installation AC Wiring - General Be sure to use the recommended wire and disconnect size as recommended in the Owner’s Manual for the Sine Wave Plus Inverter. WARNING Before connecting any AC wiring, ensure that there is no DC energy accessible by the inverter by opening the DC disconnect switch(es).
  • Page 25: Neutral Bonding

    Neutral Bonding The HOT output of each inverter provides 120 Vac to neutral. The voltage between the HOT outputs from the L1 and L2 inverter is 240 Vac when the ISC-S cable is used. When using a series-stacked, inverter configuration, it is important to provide a neutral bond between both inverters.
  • Page 26: Ac Wiring - Specific

    Installation AC Wiring - Specific The following AC connections are specific to installing the Sine Wave Plus Inverter/chargers in a series-stacked configuration for off-grid and on-grid applications. Off-Grid AC Wiring for Sine Wave Plus Inverters The following steps are illustrated in To connect the AC wiring for an off-grid application using Sine Wave Plus Inverters: Grounding...
  • Page 27: Figure 2-4 Ac Wiring For Series-Stacked

    LEGEND GROUND NEUTRAL HOT L1 HOT L2 AC Distribution Panel (Inverter Panel) 120/240 Vac To AC Loads Figure 2-4 AC Wiring for Series-stacked 975-0059-01-01 Rev A NEUTRAL GROUND NEUTRAL/ GROUND BOND To primary Earth/ground connections SW Plus Inverters Off Grid AC Wiring - Specific Sine Wave Plus Inverter/Charger...
  • Page 28: On-Grid Ac Wiring For Sine Wave Plus Inverters

    Installation On-Grid AC Wiring for Sine Wave Plus Inverters Prepare the AC wiring as follows for an on-grid application using series-stacked, Sine Wave Plus Inverter/chargers. The following steps are illustrated in Figure Grounding 1. Connect G a) from the primary earth/ground to the main utility panel, b) from the main utility panel to the AC distribution panel (Sub-panel), c) from the L1 inverter AC ground bar to the utility panel ground bar, d) from the L2 inverter AC ground bar to the utility panel ground bar.
  • Page 29: Figure 2-5 Ac Wiring For Series-Stacked

    To primary Earth/ground connections AC Distribution Panel (Sub-panel) 120/240 Vac To AC Loads GROUND Figure 2-5 AC Wiring for Series-stacked 975-0059-01-01 Rev A Main Utility Panel 120/240 Vac Panel NEUTRAL/GROUND NEUTRAL GROUND GROUND (inside) GROUND (inside) NEUTRAL SW Plus Inverters OnGrid AC Wiring - Specific LEGEND GROUND...
  • Page 30: Generator Ac Wiring To Series-Stacked Inverters

    Installation Generator AC Wiring to Series-stacked Inverters The following wiring diagrams show the AC wiring from an AC generator to the inverters. The following procedures are illustrated in I m p o r t a n t : before proceeding with this procedure. With a generator To install the AC wiring from a generator with a (GDS): disconnect switch...
  • Page 31: Figure 2-6 Generator Wiring To Series-Stacked

    To primary Earth/ground connections Generator Disconnect Switch (optional) Generator GROUND 120/240 Vac GEN HOT OUT AC Distribution Panel (Sub-panel) 120/240 Vac To AC Loads Figure 2-6 Generator Wiring to Series-stacked 975-0059-01-01 Rev A Main Utility Panel 120/240 Vac Panel NEUTRAL/GROUND NEUTRAL GROUND NEUTRAL...
  • Page 32: Wiring For A 240 Vac-Only Input Source

    Installation Wiring for a 240 Vac-Only Input Source A 240 Vac source does not allow for the connection to the input of a 120 Vac inverter as no neutral line is supplied from the utility or generator. In order to use stacked inverters, a neutral line must be added by using a center-tapped autotransformer (such as a T240) on the inverter’s input.
  • Page 33: Figure 2-7 Ac Wiring For A 240 Vac-Only Input Source

    LEGEND GROUND NEUTRAL HOT L1 HOT L2 (with center-tapped neutral-out) GROUND GEN HOT Generator 240 Vac - ONLY AC Distribution Panel (Inverter Panel) 120/240 Vac To AC Loads Figure 2-7 AC Wiring for a 240 Vac-Only Input Source 975-0059-01-01 Rev A Auto-transformer Neutral Ground...
  • Page 34: Connecting The Isc-S Cable

    Installation Connecting the ISC-S Cable The ISC-S Cable connects to the Stacking Port on the AC end of the Sine Wave Plus Inverter/charger. The Stacking Port is a 25-pin receptacle for the 25-pin D-connector on the ISC-S Cable. Once the connector is in place, it is secured by two screws on the sides of the connector.
  • Page 35: Figure 2-10 The Isc-S Cable Connected To Dual Sine Wave Plus Inverters

    Figure 2-10 The ISC-S Cable Connected to Dual Sine Wave Plus Inverters CAUTION; Damage to Loads Until the units are tested, do not connect any loads to the inverters. Proceed to the next chapter for Start up and Functional Testing Procedures. 975-0059-01-01 Rev A Connecting the ISC-S Cable Connect one end of ISC-S...
  • Page 36 2–18...
  • Page 37: Operation

    Operation Chapter 3, testing procedures for series-stacked Sine Wave Plus inverters. The following topics are covered in this chapter. “Operation”contains information on startup and functional For this topic: “Start-up and Testing” “Setting Changes” See: page 3–2 page 3–4...
  • Page 38: Start-Up And Testing

    Operation Start-up and Testing Stacked inverters must operate together in order to provide the 120/240 Vac to the loads. The ISC-S cable ensures the output from each inverter is 180 degrees out-of-phase for operating 240 Vac loads. To start up and test the inverters: 1.
  • Page 39: Figure 3-1 Testpoints For Confirming Voltages

    AC Distribution Panel (Sub-panel) 120/240 Vac To 120 Vac Loads Figure 3-1 Testpoints for Confirming Voltages 975-0059-01-01 Rev A NEUTRAL GROUND To Main Utility Panel Ground Start-up and Testing LEGEND GROUND NEUTRAL HOT L1 HOT L2 To L1 Inverter To L2 Inverter To L2 Inverter To 240 Vac Loads...
  • Page 40: Setting Changes

    Operation Setting Changes When operating a Sine Wave Plus in a series-stacked configuration, the following settings must be changed for proper operation. See the Owner’s Manual for the Sine Wave Plus for detailed instructions on accessing and changing the settings using the Inverter Control Module (ICM) on the inverter.
  • Page 41: Automatic Generator Equalize Charging

    Automatic Generator Equalize Charging If the inverters are set to automatically charge the batteries using the generator, the equalize process will begin during the next, automatically started, generator run period. When the equalizing process has completed, the generator automatically stops and the cursor returns to the OFF position in the 01B EQ C item on the generator-controlling inverter.
  • Page 42 3–6...
  • Page 43: Warranty And Return Information

    The dated invoice or purchase receipt showing the product exchanged under warranty 975-0059-01-01 Rev A This Limited Warranty is provided by Xantrex Technology, Inc. ("Xantrex") Inverter Stacking Control – Series In any warranty claim, dated proof of purchase must accompany the Cable.
  • Page 44 Warranty and Return What does this warranty not cover? product or costs related to the removal, installation, or troubleshooting of the customer's electrical systems. This warranty does not apply to and Xantrex will not be responsible for any defect in or damage to: the product if it has been misused, neglected, improperly installed, physically damaged or altered, either inter- nally or externally, or damaged from improper use or use in an unsuitable environment;...
  • Page 45: Return Material Authorization Policy

    Include the following: • The RMA number supplied by Xantrex Technology, Inc. clearly marked on the outside of the box. • A return address where the unit can be shipped. Post office boxes are not acceptable.
  • Page 46: Information About Your System

    Warranty and Return Information About Your System As soon as you open your Inverter Stacking Control – Series Cable sure to keep your proof of purchase. Purchased From Purchase Date If you need to contact Customer Service, please record the following details before calling. This information will help our representatives give you better service.
  • Page 47: Index

    Index N u m e r i c s 2–14 240 Vac-Only Input Source Abbreviations and Acronyms 2–6 AC Wiring - General 2–8 AC Wiring - Specific 2–2 Battery Requirements 2–2 Battery-Bank Configuration Bulk and Float Charging Parameters 2–4 Connecting the Battery Bank Customer Service WA–4 preparing to call...
  • Page 48 IX-2...
  • Page 50 Xantrex Technology Inc. 1 800 670 0707 Tel toll free NA 1 360 925 5097 Tel direct 1 800 994 7828 Fax toll free NA 1 360 925 5143 Fax direct customerservice@xantrex.com www.xantrex.com PN 975-0059-01-01 PC Printed in USA...

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