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Inverter Stacking |
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(ISC-S) Cable |
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Inverter Stacking Control Series (ISC-S)
Cable
Installation Guide
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.
Trademarks
Inverter Stacking Control – Series Cable is a trademark of Xantrex International. Xantrex is a registered trademark of Xantrex International.
Other trademarks, registered trademarks, and product names are the property of their respective owners and are used herein for identification purposes only.
Notice of Copyright
Inverter Stacking Control Series (ISC-S) Cable Installation Guide© January 2004 Xantrex International. All rights reserved.
Disclaimer
UNLESS SPECIFICALLY AGREED TO IN WRITING, XANTREX TECHNOLOGY INC. (“XANTREX”)
(a)MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY TECHNICAL OR OTHER INFORMATION PROVIDED IN ITS MANUALS OR OTHER DOCUMENTATION.
(b)ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSS OR DAMAGE, WHETHER DIRECT, INDIRECT, CONSEQUENTIAL OR INCIDENTAL, WHICH MIGHT ARISE OUT OF THE USE OF SUCH INFORMATION. THE USE OF ANY SUCH INFORMATION WILL BE ENTIRELY AT THE USER’S RISK.
Date and Revision
January 2004 Rev A
Part Number
975-0059-01-01 Rev A
Contact Information
Telephone: |
1 800 670 0707 (toll free North America) |
|
|
1 360 925 5097 |
(direct) |
Fax: |
1 800 994 7828 |
(toll free North America) |
|
1 360 925 5143 |
(direct) |
Email: |
customerservice@xantrex.com |
|
Web: |
www.xantrex.com |
|
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 Plus inverters using the Inverter Stacking Control – Series Cable. Installers should be certified technicians or electricians.
Organization
This Guide is organized into three chapters.
Chapter 1, “Introduction” provides information on stacking of Sine Wave Plus inverters.
Chapter 2, “Installation” provides information on installing the DC wiring, AC
Wiring, and the ISC-S for Sine Wave Plus inverters.
Chapter 3, “Operation”contains information on startup and functional testing procedures for series-stacked Sine Wave Plus inverters.
Warranty and Product Information is provided at the end of the Guide.
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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:
AC |
Alternating Current |
ASC |
Authorized Service Center |
BTS |
Battery Temperature Sensor |
DC |
Direct Current |
DCCB |
DC Conduit Box |
DVM |
Digital Voltage Meter |
GSM |
Generator Start Module |
ISC-S cable |
Inverter Stacking Control – Series Cable |
Hz |
Hertz |
RMA |
Return Material Authorization |
Vac |
AC Voltage |
|
|
Related Information
You can find more information about Xantrex Technology Inc. as well as its products and services at www.xantrex.com
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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 not operate the ISC-S cable if it has been damaged in any way. If the ISC- S cable is damaged, see the Warranty section.
5.Do not disassemble the ISC-S cable. It contains no user-serviceable parts. See Warranty for instructions on obtaining service. Attempting to service the ISC- S cable yourself will void your wawrranty.
6.To reduce the risk of electrical shock, disconnect both AC and DC power from the inverters before attempting any maintenance or cleaning or working on any circuits connected to the ISC-S cable. Turning off the inverters will not reduce this risk.
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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 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
- 2–2 |
Battery Requirements for Series-stacked Inverters - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
- 2–2 |
Battery-Bank Configuration for Series-stacked Inverters - - - - - - - - - - - - - - - - - - - - - - - - - |
2–2 |
Grounding Series-stacked Inverters - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
2–3 |
Connecting the Battery Bank to the Inverters - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
2–4 |
AC Wiring - General - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
2–6 |
Inverter AC Distribution Panel (Sub-Panel) Wiring (if used) - - - - - - - - - - - - - - - - - - - - - - - |
2–6 |
Neutral Bonding - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
2–7 |
Grounding - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
2–7 |
AC Wiring - Specific - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
2–8 |
Off-Grid AC Wiring for Sine Wave Plus Inverters - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
2–8 |
On-Grid AC Wiring for Sine Wave Plus Inverters - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
2–10 |
Generator AC Wiring to Series-stacked Inverters - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
2–12 |
Wiring for a 240 Vac-Only Input Source - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
2–14 |
Connecting the ISC-S Cable - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
2–16 |
3 Operation
Start-up and Testing- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–2
Setting Changes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–4
Automatic and Manual Generator Control - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–4
Bulk and Float Charging Parameters - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–4
Equalize Charging - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–4
Automatic Generator Equalize Charging - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–5
Manual Equalize Charging - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–5
Warranty and Return Information - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - WA–1
Index- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - IX–1
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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-stacked Inverters - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–3 Figure 2-3 DC Connections for Dual Inverters, Series-stacked- - - - - - - - - - - - - - - - - - - - - - - - - - 2–5 Figure 2-4 AC Wiring for Series-stacked SW Plus Inverters Off Grid - - - - - - - - - - - - - - - - - - - - - 2–9 Figure 2-5 AC Wiring for Series-stacked SW Plus Inverters OnGrid - - - - - - - - - - - - - - - - - - - - 2–11 Figure 2-6 Generator Wiring to Series-stacked SW Plus Inverters - - - - - - - - - - - - - - - - - - - - - - 2–13 Figure 2-7 AC Wiring for a 240 Vac-Only Input Source - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–15 Figure 2-8 The 25-pin D-connector on the ISC-S Cable - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–16 Figure 2-9 Stacking Port Locations on SW Plus Inverters - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–16 Figure 2-10 The ISC-S Cable Connected to Dual Sine Wave Plus Inverters- - - - - - - - - - - - - - - - - 2–17 Figure 3-1 Testpoints for Confirming Voltages - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–3
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1 Introduction
Chapter 1, “Introduction” provides information on stacking of Sine
Wave Plus inverters.
The following topics are covered in this chapter.
For this topic: |
See: |
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“Stacking Inverters” |
page 1–2 |
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|
“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 configurations. In other words, you can use two SW Plus 2548 inverters, or two SW Plus 4048 inverters. You cannot stack a SW Plus 2548 with a SW Plus 4048. Different types of inverters cannot be intermixed in a stacking configuration. Models with 230 Vac, 50 Hz, output cannot be series-stacked.
Stacking inverters in a “series” configuration can double the output voltage at the same current level as an individual inverter.
Series-stacking connects the neutral outputs of each inverter together and enables the inverters to synchronize their hot outputs to be 180 degrees out-of-phase with each other. This maintains the wattage output at the rated level, but doubles the voltage output available, thereby allowing 240 Vac loads to be supported by the system.
Example: Two series-stacked, Sine Wave Plus 4024 Vac inverters can run both 120 Vac and 240 Vac loads at 33 amps continuous output.
Stacking inverters in a series configuration requires the use of the Inverter
Stacking Control-Series (ISC-S) Cable.
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Stacking Inverters
Figure 1-1 Off-Grid Applications with Series-Stacked Inverters
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