Magnum Energy ME-SSI User Manual
ME-SSI
Series Stacking Interface
Owner’s Manual
Disclaimer of Liability
The use of this manual and the conditions or methods of
installation, operation, use, and maintenance of the ME-SSI (Series
Stacking Interface) are beyond the control of Magnum Energy, Inc.
Therefore, this company assumes no responsibility and expressly
disclaims any liability for loss, damage, or expense whether direct,
indirect, consequential, or incidental that may arise out of or be
in any way connected with such installation, operation, use, or
maintenance.
Due to continuous improvements and product updates, the images
shown in this manual may not exactly match the unit purchased.
Restrictions on Use
The ME-SSI may only be used in life-support devices or systems
with the express written approval of Magnum Energy. Failure
of the ME-SSI can reasonably be expected to cause the failure
of that life-support device or system, or to affect the safety or
effectiveness of that device or system. If the ME-SSI fails, it is
reasonable to assume that the health of the user or other persons
may be endangered.
Contact Information
Magnum Energy, Inc.
2211 West Casino Rd.
Everett, WA 98204
Phone: (425) 353-8833
Fax: (425) 353-8390
Web: www.magnumenergy.com
Revisions Required
Your MS4024 inverter and remote control (if used) must have the
correct revision level in order to work in a series stacked confi gu-
ration. The MS4024 requires a revision of 2.0 or higher. To use a
remote control (i.e., ME-RC50 or ME-ARC) with this product, you
need a revision of 1.2 or higher.
i
© 2010 Magnum Energy, Inc.
Safety symbols
To reduce the risk of electrical shock, fi re, or other safety hazard,
the following safety symbols have been placed throughout this
manual to indicate dangerous and important safety instructions.
WARNING: This symbol indicates that failure to take a
specifi ed action could result in physical harm to the user.
CAUTION: This symbol indicates that failure to take a
specifi ed action could result in damage to the equipment.
Info: This symbol indicates information that emphasizes
or supplements important points of the main text.
IMPORTANT PRODUCT SAFETY INSTRUCTIONS
This manual contains important safety instructions that must be
followed during the installation and operation of this product. Read
all instructions and safety information contained in this manual
before installing or using this product.
• All electrical work must be performed in accordance with local,
state, and federal electrical codes.
• This product is designed for indoor/compartment installation.
DO NOT expose to rain, snow, moisture, or liquids of any type.
• Use insulated tools to reduce the chance of electrical shock or
accidental short circuits.
• Remove all jewelry such as rings, watches, bracelets, etc., when
installing or performing maintenance on an inverter.
• Always disconnect the batteries or energy source prior to
installing or performing maintenance on an inverter. Live power
may be present at more than one point since an inverter utilizes
both batteries and AC. Turning off the inverter may not reduce
this risk. As long as AC power is connected, it will pass through
the inverter regardless of the ON/OFF power switch setting.
• Always verify proper wiring prior to starting an inverter.
• Do not operate an inverter if it has been damaged.
• Do not dismantle an inverter; there are no user-serviceable
parts contained in this product. Attempting to service the unit
yourself could cause electrical shock. Internal capacitors remain
charged after all power is disconnected.
• No AC or DC disconnects are provided as an integral part of the
inverter. Both AC and DC disconnects must be provided as part
of the system installation.
© 2010 Magnum Energy, Inc.
ii
• No overcurrent protection for the battery supply is provided as
an integral part of the inverter. Overcurrent protection of the
battery cables must be provided as part of the installation.
• No overcurrent protection for the AC output wiring is provided as
an integral part of the inverter. Overcurrent protection of the AC
output wiring must be provided as part of the installation.
IMPORTANT BATTERY SAFETY INSTRUCTIONS
• Wear eye protection (safety glasses) when working with
batteries.
• Remove all jewelry such as rings, watches, bracelets, etc., when
installing or performing maintenance on the inverter.
• Never work alone. Always have someone near you when working
around batteries.
• Use proper lifting techniques when working with batteries.
• Never use old or untested batteries. Check each battery’s label
for age, type, and date code to ensure all batteries are identical.
• Batteries are sensitive to changes in temperature. Always install
batteries in a stable environment.
• Install batteries in a well ventilated area. Batteries can produce
explosive gasses. For compartment or enclosure installations,
always vent batteries to the outside.
• Provide at least one inch of air space between batteries to
provide optimum cooling.
• Never smoke when in the vicinity of batteries.
• To prevent a spark at the battery and reduce the chance of
explosion, always connect the cables to the batteries fi rst. Then
connect the cables to the inverter.
• Use insulated tools at all times.
• Always verify proper polarity and voltage before connecting the
batteries to the inverter.
• To reduce the chance of fi re or explosion, do not short-circuit the
batteries.
• In the event of accidental exposure to battery acid, wash
thoroughly with soap and water. In the event of exposure to the
eyes, fl ood them for at least 15 minutes with running water and
seek immediate medical attention.
• Recycle old batteries.
iii
SAVE ALL INSTRUCTIONS
© 2010 Magnum Energy, Inc.
Table of Contents
Introduction ........................................................................1
Installation .........................................................................2
DC Wiring ............................................................................ 2
Battery Connections for Series Stacked Inverters ................. 3
DC Wiring Using One Battery Cable Pair ...........................4
DC Wiring Using Two Battery Cable Pairs .......................... 5
Incorrect DC Wiring ....................................................... 6
The Stacker Cable ................................................................ 7
Connecting the Series Stacking Cable ................................. 7
AC Wiring ............................................................................ 8
AC Input Source .............................................................. 8
AC Input ......................................................................... 9
AC Output ......................................................................10
AC Terminal Block ...........................................................10
Determine Which AC Wiring Confi guration to Use ..............11
Neutral to Safety Ground Bonding (Mobile applications) ........13
Grounding ......................................................................14
Operation ..........................................................................15
Using the Remote Control .....................................................15
Functional Test ....................................................................15
Power-up Sync Test .........................................................16
Testing Invert Mode .........................................................16
Testing AC Transfer/Charge Mode ......................................17
Inverter Operation ...............................................................18
Charger Operation ...............................................................18
Troubleshooting ................................................................20
Inverter Faults ....................................................................20
Stacking Faults ...................................................................20
Troubleshooting Tips ............................................................20
Warranty/Service Information ..........................................21
How to Receive Repair Service ..............................................22
Table of Figures
Figure 1, Series Stacking Interface (ME-SSI) Components ........... 1
Figure 2, ME-SSI Components Connected to Stacked Pair ...........3
Figure 3, DC Wiring Using One Battery Cable Pair ...................... 4
Figure 4, DC Wiring Using Two Battery Cable Pairs ..................... 5
Figure 5, Incorrect DC Wiring .................................................. 6
Figure 6, Stack Port Location (on MS4024) ................................ 7
Figure 7, Single In/Single Out (30A with 120/240VAC source) ....11
Figure 8, Single In/Single Out (30A with 120VAC only source) ....11
Figure 9, Single In/Single Out (60A with 120/240VAC source) ....12
Figure 10, Single In/Single Out (60A with 120VAC only source) ..12
Figure 11, AC Wiring compartment (MS4024 model) .................14
© 2010 Magnum Energy, Inc.
iv
Introduction
Introduction
Magnum Energy’s Series Stacking Interface (ME-SSI) kit allows
two MS4024 models to be connected together in a “series stacked”
confi guration to provide 120VAC and 240VAC outputs. When con-
nected together in a series, the AC output of each inverter continues
to provide 120VAC, but the two 120VAC output waveforms are also
phase locked and synchronized 180° out-of-phase from each other
to provide 240VAC. This is commonly referred to as a 120/240VAC
split-phase or as a 240VAC single-phase with a center-tap neutral,
and is the same AC voltage confi guration that most utility companies
connect to houses.
While inverting, a series stacked confi guration allows you to oper-
ate 240VAC loads at twice the power that is available from a single
inverter; and, the ability to provide the power of each inverter separately to operate 120VAC loads.
While charging, a series stacked confi guration allows the battery
bank to be independently charged up to twice the power available
from a single inverter; and if needed, provides back-up power for
your 120/240VAC loads during a utility black-out.
The ME-SSI kit consists of:
ME-SSI Owner’s Manual
•
Two DC interconnects cables (red and black)
•
Two DC terminal insulators (red and black)
•
Series Stacker cable
•
Series Stacker Cable
Red and Black DC
Interconnects
Cables
Red and Black DC
Terminal Insulators
Figure 1, Series Stacking Interface (ME-SSI) Components
1
© 2010 Magnum Energy, Inc.
Installation
Installation
When connecting inverters in a series stacked confi guration,
certain installation requirements are needed to obtain optimum
performance.
This section provides information on DC and AC wiring and connecting the stacker cable. Use the information in this section along
with the installation requirements provided in the owner’s manual
for your inverter to ensure a successful installation.
IMPORTANT - Before you begin your installation:
•
Series stacking allows two MS4024 (120VAC inverters) to be combined to provide a higher AC voltage (two MS4024 series stacked
= 8000 watts @ 120/240VAC). Magnum also has inv erters that
can be installed in a confi guration known as “parallel stacking”.
This confi guration allows you to increase your in verter output
power using a maximum of four MS-PAE units. For example, four
MS4024PAE Series inverters (using the ME-R TR router) can be
combined to provide 16,000 watts of inverter power (MS4024P AE
x 4 = 16,000 watts @ 120/240VAC).
Info: The MS4024 (120VAC unit) cannot be reconfi gured
to allow parallel stacking. Only the MS-PAE Series
(MS4024PAE or MS4448PAE) can be par alleled stacked.
CAUTION: All wiring must be done in accordance with
local and national electrical safety standards.
DC Wiring
The success of an inverter system installed in a series stacked confi guration is dependent on the quality and maintenance of the DC
connections and proper cable sizing. When inverters are stacked
and required to perform optimally, the DC connections must be
tight and the cables must not be too long or undersized. Refer to
the owner’s manual for your inverter to determine the required
cable size and overcurrent protection device for each inverter.
CAUTION: Before making any DC connection, ensure
the cable polarity at both the battery and the inverter
are correct. Positive must be connected to positive;
negative must be connected to negative. Reversing the
positive and negative battery cables will damage the
inverter. This type of damage is easily detected and will
void your warranty.
For help against accidental shorts, the ME-SSI kit provides two
DC terminal insulators. These are to be used where both the battery cables and DC interconnects are connected (see Figure 2).
Alternately, a DC Conduit Box (PN: ME-CB) or Mini Magnum Panel
(MMP250-60S) may be used to protect the DC terminals.
© 2010 Magnum Energy, Inc.
2
Installation
DC interconnect cables
(positive and negative )
Stacker
Cable
DC terminal insulators
(negative and pos iti ve)
Figure 2, ME-SSI Components Connected to Stacked Pair
Battery Connections for Series Stacked Inverters
When inverters are series stacked, they must operate from a single
battery bank. A single battery bank confi guration helps to balance
charging and discharging. If your battery bank uses multiple battery strings (i.e., batteries connected together in series to provide
the required DC voltage), ensure each battery string is connected
together in parallel to form a single battery bank.
For example: If you have eight 6 volt batteries and require a 24
volt battery bank, connect four of the 6 volt batteries together to
make 24 volts. This is known as a series battery string. The other
four 6 volt batteries connected together will also make another series battery string. The negative ends of these two battery strings
must be connected together. Likewise, the positive ends of the two
battery strings must be connected together. Then, the two battery
strings are connected together in parallel to make a single battery
bank to power the stacked inverters (as shown in Figures 3 and 5).
CAUTION: The DC negative interconnect cable provided in
the ME-SSI kit is a crucial part of the DC wiring and must be
used. It ensures that the negative battery terminals of both
inverters are at the same voltage potential. This allows proper
communication of the clocking signals and helps prevent
damage to the stacking ports.
Info: If multiple battery temperature sensors are installed,
ensure that they are all connected to the battery bank in the same
location. This will help balance the charging from each charger.
3
© 2010 Magnum Energy, Inc.
This diagram is for a 24 VDC
battery system. Ensure your
battery bank is wired correctly .
Installation
MS4024
L1
inverter
DC Positive and
Negative Interconnects
(from ME-SSI kit)
DC disconnect and
overcurrent
protection
6 volt
battery
6 volt
battery
6 volt
battery
6 vo lt
battery
6 vo lt
battery
6 vo lt
battery
Stacker cab le
(from ME-SSI kit)
MS4024
L2
inverter
6 vo lt
battery
6 volt
battery
This battery bank uses two battery strings . They must
be conn ected together in parallel to provide a single
battery bank to the inverters .
Figure 3, DC Wiring Using One Battery Cable Pair
DC Wiring Using One Battery Cable Pair – Both inverters
•
share a single battery cable pair (one positive and negative). It is
divided between the two inverters and is protected by a single DC
disconnect/overcurrent device. The positive battery cable is connected to the positive terminal of one inverter and the negative
battery cable is connected to the negative terminal of the other inverter. This is to ensure an even charge and discharge through the
batteries. The positive and negative interconnect cables provided
are used to place the inverters as close to each other as possible.
© 2010 Magnum Energy, Inc.
4
Loading...