Xantrex GT100E User manual

GT100E MS
Combiner Box
forMaster/Slave
Configuration
Owner’s Manual

GT100E MS Combiner Box
for Master/Slave
Configuration
Owner’s Manual

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
GT100E MS Combiner Box for Master/Slave Configuration 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
GT100E MS Combiner Box for Master/Slave Configuration Owner’s Manual© January 2005 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 2005 Revision A
Part Number
152602
Contact Information
Telephone: [phone] (toll free North America)
1 360 925 5097 (direct)
Fax: [phone] (toll free North America)
1 360 925 5143 (direct)
Email: [email protected]
Web: www.xantrex.com

iii
About This Manual
Purpose
The purpose of this Owner’s Manual is to provide explanations and
procedures for installing and configuring the GT100E MS Combiner Box
for Master/Slave Configuration.
Scope
The Manual provides safety guidelines, procedures for installing the
GT100E MS Combiner Box for Master/Slave Configuration, as well as
information about configuring the combiner box. It does not provide
details about the GT100E Grid Tie Inverter. You need to consult the
GT100E Grid Tie Inverter Installation Manual (P/N 152364) and GT100E
Grid Tie Inverter Operation, Maintenance and Troubleshooting Manual
(P/N 152365) for this information.
Audience
The Manual is intended for anyone who needs to install and operate the
GT100E MS Combiner Box for Master/Slave Configuration. Installers
should be certified technicians or electricians.
Organization
This Manual is organized into three chapters:
Chapter 1, “Introduction”, Chapter 1 contains a description of the
GT100E MS and lists the different operating states available with the
GT100E MS Combiner Box.
Chapter 2, “Installation”, Chapter 2 contains procedures on how to mount
the GT100E MS and make the cable connections.
Chapter 3, “Configuration”, Chapter 3 describes how to configure the
GT100E MS for Master/Slave configuration.

About This Manual
iv 152602
Conventions Used
The following conventions are used in this guide.
Related Information
You can find more information about Xantrex Technology Inc. as well as
its products and services at www.xantrex.com
WARNING
Warnings identify conditions or practices 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.

v
Important Safety Instructions
1. Before installing and using the GT100E MS Combiner Box for
Master/Slave Configuration, read all instructions and cautionary
markings on the GT100E MS Combiner Box for Master/Slave
Configuration, GT100E Grid Tie Inverter, and all appropriate sections
of this manual.
2. Use only attachments recommended or sold by the manufacturer.
Doing otherwise may result in a risk of fire, electric shock, or injury
to persons.
3. To avoid a risk of fire and electric shock, make sure that existing
wiring is in good condition and that wire is not undersized. Do not
operate the GT100E MS Combiner Box for Master/Slave
Configuration with damaged or substandard wiring.
4. Do not operate the GT100E MS Combiner Box for Master/Slave
Configuration if it has received a sharp blow, been dropped, or
otherwise damaged in any way. If the GT100E MS Combiner Box for
Master/Slave Configuration is damaged, see the Warranty section.
5. Do not disassemble the GT100E MS Combiner Box for Master/Slave
Configuration. It contains no user-serviceable parts. See Warranty for
instructions on obtaining service. Attempting to service the GT100E
MS Combiner Box for Master/Slave Configuration yourself may
result in a risk of electrical shock or fire. Internal capacitors remain
charged after all power is disconnected.
6. To reduce the risk of electrical shock, disconnect both AC and DC
power from the GT100E Grid Tie Inverter and the GT100E MS
Combiner Box before attempting any maintenance or cleaning or
working on any circuits connected to the GT100E MS Combiner Box
for Master/Slave Configuration. Turning off controls will not reduce
this risk.
WARNING
This chapter contains important safety and operating instructions. Read and keep
this Owner’s Manual for future reference.

vi

152602 vii
Important Safety Instructions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -v
1 Introduction
GT100E MS Combiner Box - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–2
Master/Slave Configuration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–2
Master Unit - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–3
Slave Unit - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–3
Master/Slave Operation States - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–3
Fault Condition - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–4
Mis-configuration of Units- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–4
2 Installation
Equipment Required - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–2
Unpacking the GT100E MS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–2
Mounting Instructions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–4
Cable Installation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–5
Wire Gauge and Torque Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–5
Wire Gauge Requirements for the GT100E MS Combiner Box - - - - - - - - - 2–5
Torque Specifications for the GT100E MS Combiner Box - - - - - - - - - - - - 2–5
MS100E Connections - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–6
Input/Output Access Panels - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–6
PV Array and GT100E Connections - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–7
GT100E MS Control Power Cable - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–10
MS100E Interface Assembly Installation for GT100E #1 Mounting Instructions 2–11
GT100E Unit Installation- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–14
3 Configuration
Master/Slave Configuration - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–2
Warranty and Product Information - - - - - - - - - - - - - - - - - - - - - - - - - - WA–1
Contents

viii

152602 ix
Figure 1-1 Configuration Diagram - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–4
Figure 2-1 GT100E MS Componenets - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–3
Figure 2-2 Wall Mounting Bracket Locations - - - - - - - - - - - - - - - - - - - - - - - - - - - 2–4
Figure 2-3 Input/Output Access Panel Location- - - - - - - - - - - - - - - - - - - - - - - - - - 2–6
Figure 2-4 PV Array and GT100E Connections- - - - - - - - - - - - - - - - - - - - - - - - - - 2–7
Figure 2-5 PV Array #1 and GT100E #1 Connections - - - - - - - - - - - - - - - - - - - - - 2–8
Figure 2-6 PV Array #2 and GT100E #2 Connections - - - - - - - - - - - - - - - - - - - - - 2–9
Figure 2-7 GT100E MS Power Control Cable Connections- - - - - - - - - - - - - - - - - - 2–10
Figure 2-8 Location of GT100E MS in the GT100E- - - - - - - - - - - - - - - - - - - - - - - 2–11
Figure 2-9 GT100E MS Interface Assembly Installation- - - - - - - - - - - - - - - - - - - - 2–12
Figure 2-10 GT100E MS Interface Assembly Cable Connection - - - - - - - - - - - - - - - 2–13
Figure 2-11 GT100E MS Control Power and Interface Cable Connection - - - - - - - - - 2–14
Figures

x

1Introduction
Chapter 1 contains a description of the GT100E MS
and lists the different operating states available with
the GT100E MS Combiner Box.

Introduction
1–2 152602
GT100E MS Combiner Box
The GT100E MS combiner box, when installed with dual GT100Es,
allows the GT100E Master/Slave configuration to maximize energy
production during periods of low irradiance. A system would consist of
two - 100kW inverters, one as the master and the other as a slave, and as a
result, the GT100E system will run at greater than 94% efficiency above
20kW.
Master/Slave Configuration
The Master/Slave configuration would be implemented on the DC side of
the inverter. The configuration would feed multiple PV arrays into the
Master inverter until the irradiance increases and the power reaches the
high power threshold of the Master inverter. Once the power reaches the
Master inverter's high power threshold, the inverter would shutdown and
disconnect from the additional arrays. The Slave inverter would then be
enabled and both the Master and the Slave inverter would power up and
come on-line. See Figure 1-1 on page 1–4.
The GT100E inverters will have the ability to run in the master/slave
configuration or the ability to run independently (stand-alone mode). The
inverters will also have the ability to be configured as either the master
(configured master) or the slave inverter (configured slave). The inverters
also can be set to switch from operational master to operational slave
daily.
Difference between Configured Master/Slave and Operational
Master/Slave
Through the front panel or the Xantrex Solar GUI (Graphical User
Interface), the user configures an inverter to be either configured master
or configured slave. Next, the user sets daily role reversal on or off.
If daily role reversal is off, then the configured master is the operational
master (operates as master) and the configured slave is the operational
slave (operates as slave).
If daily role reversal is on, then the configured master is operational
master on odd days (January 1,3,5,...) and operational slave on even days
(January 2,4,6,...).

Master/Slave Operation States
152602 1–3
If daily role reversal is on, then the configured slave is operational slave
on odd days (January 1,3,5,...) and operational master on even days
(January 2,4,6,...).
Master Unit
The GT100E Master inverter will control the GT100E MS Combiner Box
via a control cable. The Master inverter will enable and disable the Slave
inverter, and monitor the status of the Slave inverter through an
interconnect cable. If the interconnect cable is disconnected, the master
will open the combiner box and go online.
Slave Unit
The GT100E Slave inverter will monitor the status of the Master inverter
through the interconnect cable. The inverter will be enabled from the
Master inverter. If the interconnect cable is disconnected then the slave
will go online.
Master/Slave Operation States
The Master/Slave operation states will follow the standard states specified
by the GT100E Grid Tie Inverter Operation, Maintenance and
Troubleshooting Manual (P/N 152365) with the following Master/Salve
configuration state.
1. At Power up, the Master inverter will disable the Slave inverter, and
close the contactor in the GT100E MS Combiner Box.
2. The Master inverter will go online through the normal operating
States. The Slave inverter will remain disabled.
3. When the Master inverter's power level increases, and reaches the
High Power Threshold (configurable parameter). The Master inverter
will shutdown, open the contactor in the GT100E MSCombiner Box,
and the Master will also enable the Slave inverter.
4. Both the Master and Slave Inverters will go to an online state.
5. End of the Day or Cloud Interaction - When the Master inverter's
power level decreases, and reaches the Low Power Threshold and has
maintained the power level for the Minimum Transition Seconds
(configurable parameter). The Master and the Slave inverters will

Introduction
1–4 152602
shutdown. The Master inverter will disable the Slave inverter and
close the contactor in the GT100E MS Combiner Box. The Master
inverter will go online.
Fault Condition
If the Master or Slave Inverter gets a fault or the status signal from either
inverter is lost, the inverters will shutdown and restart as stand alone
inverters.
Mis-configuration of Units
If the Master or Slave Inverter are mis-configured by the operator, the
inverters run as stand alone inverters.
Figure 1-1 Configuration Diagram

2Installation
Chapter 2 contains procedures on how to mount the
GT100E MS and make the cable connections.

Installation
2–2 152602
Equipment Required
• Ratchet Handle
• Extension
• Metric socket set
• Metric wrench set
• Metric hex wrench set
• Torque wrench with 0-150Nm minimum range
• Phillips Screwdriver
Unpacking the GT100E MS
To unpack the GT100E MS from the shipping pallet:
1. Remove the packing material from the MS100E.
2. Open the GT100E MS Combiner Box.
3. Remove the 8 M6 screws holding the safety cover from the box.
4. Remove the box containing GT100E MS interface assemblies.
5. Remove the manual.
6. Remove the GT100E MS combiner box power cable assembly P/N 1-
152492-01
7. Remove the GT100E MS combiner box interface cable assembly P/N
1-152493-01
8. Remove all mounting hardware from the box.
9. Remove the GT100E MS Combiner Box from the pallet.
WARNING: Equipment is Heavy
The GT100E MS combiner box weighs 82 Kg.

Unpacking the GT100E MS
152602 2–3
Figure 2-1 GT100E MS Componenets
Cable
1-152492-01
and 1-152493-01
Safety Cover
M6 Mounting
hardware
GT100E MS
interface
assemblies and
GT100E MS
Combiner Box
GT100E MS

Installation
2–4 152602
Mounting Instructions
To mount the MS100E combiner box onto a wall:
1. Install the 4 wall mounting brackets P/N 062-2000-02 to the rear of
the MS100E Combiner box, see Figure 2-2.
2. Anchor the GT100E MS combiner box to the wall using anchor bolts.
Important: The GT100E MS Combiner box needs to be mounted with in 8
meters of the GT100E units.
Figure 2-2 Wall Mounting Bracket Locations
Wall Mounting
Brackets