This manual contains important safety instructions that should be followed during the installation and
maintenance of this product.
To reduce the risk of electrical shock, and to ensure the safe installation and operation of this product,
the following safety symbols have been placed throughout this manual to indicate dangerous conditions
and important safety instructions.
WARNING - A dangerous voltage or condition exists in this area.
Use extreme caution when performing these tasks.
AVERTISSEMENT - Une tension ou condition dangereuse existe dans cette zone.
Faire preuve dextrême prudence lors de la réalisation de ces tâches.
CAUTION - This procedure is critical to the safe installation or operation of the unit. Follow these
instructions closely.
ATTENTION - Cette procédure est essentielle à linstallation ou lutilisation
de lunité en toute sécurité. Suivre ces instructions de près.
NOTE - This statement is important. Follow instructions closely.
NOTE - Cette déclaration est importante. Suivre les instructions de près.
·
All electrical work must be done in accordance with local, national, and/or international electrical codes.
·
Before installing or using this device, read all instructions and cautionary markings located in (or on) the
manual, the inverter, the controller, the batteries, and the PV array.
·
Do not expose this unit to rain, snow or liquids of any type. This product is designed only for indoor
mounting.
·
To reduce the chance of short-circuits when installing or working with the inverter, the batteries, or the
PV array, use insulated tools.
·
Remove all jewelry such as rings, bracelets, necklaces, etc., while installing this system. This will
greatly reduce the chance of accidental exposure to live circuits.
·
The inverter contains more than one live circuit (batteries and AC line). Power may be present at
more than one source.
·
This product contains no user serviceable parts. Do not attempt to repair this unit unless fully qualified.
Always wear eye protection, such as safety glasses, when working with batteries.
·
Remove all loose jewelry before working with batteries.
·
Never work alone. Have someone assist you with the installation or be close enough to come to your
aid when working with batteries.
·
Always use proper lifting techniques when handling batteries.
·
Always use identical types of batteries.
·
Never install old or untested batteries. Check each batterys date code or label to ensure age and type.
·
Batteries are temperature sensitive. For optimum performance, they should be installed in a stable
temperature environment.
·
Batteries should be installed in a well vented area to prevent the possible buildup of explosive gasses.
If the batteries are installed inside an enclosure, vent its highest point to the outdoors.
·
When installing batteries, allow at least 1 inch of air space between batteries to promote cooling and
ventilation.
·
NEVER smoke in the vicinity of a battery or generator.
·
Always connect the batteries first, then connect the cables to the inverter or controller. This will greatly
reduce the chance of spark in the vicinity of the batteries.
·
Use insulated tools when working with batteries.
·
When connecting batteries, always verify proper voltage and polarity.
·
Do not short-circuit battery cables. Fire or explosion can occur.
·
In the event of exposure to battery electrolyte, wash the area with soap and water. If acid enters the
eyes, flood them with running cold water for at least 15 minutes and get immediate medical attention.
·
Always recycle old batteries. Contact your local recycling center for proper disposal information.
The Power Panel is a self-contained power conversion center designed around two styles of Trace
inverters: the DR Series and the SW Series. The inverter type determines the physical component layout.
Typically, a power panel contains at least one inverter, ac and dc disconnect circuit breakers, and a battery
temperature sensor. Optional PV solar controllers and disconnects can be added to the system at the time of
order, or added later. The inverters, controllers (if ordered) and protection circuitry are fully integrated into a
single enclosure to ensure safety and reliability. Each power panel is ETL listed to UL standard 1741 (Draft),
and comes pre-wired and tested at the factory to maximize system performance and ease of operation.
Installing a power panel is as simple as mounting it to the wall and connecting a dc source (PV array,
batteries, etc.), an ac source (utility power, generator, etc.), and ac loads (via a sub-panel).
Power Panels feature:
Trace DR Series or SW Series inverter/charger(s)
AC circuit protection
DC circuit protection
Trace DR Series inverters feature:
1500, 2400 or 3600 watt continuous output
Modified sinewave output with voltage and frequency regulation
High efficiency, high surge capacity and low idle current
Three-stage battery charging for optimum battery performance
Automatic low battery protection
Fast switching for standby power applications
Stackable capabilities for 120/240 V ac powering applications
Trace SW Series inverters feature:
2500, 4000 or 5500 watt continuous output
Sinewave output with superior voltage and frequency regulation
Intelligent generator control - automatic start and stop
Programmable generator quiet time for areas with noise curfews
Frequency matching and phase synchronization - parallel operation for maximum generator efficiency
Microprocessor control for maximum flexibility and reliability
Three-stage battery charging for optimum battery performance
Automatic low battery protection
Stackable capabilities for 120/240 V ac powering applications
Optional features:
PV charge controller(s) with array disconnect(s)
Battery cables with flex conduit
Trace products are built rugged and designed to provide you with years of trouble-free service.
Recognized throughout the world as a leader in the field of alternative energy, Trace Engineering ensures
your system fully meets your quality expectations and powering needs. We thank you for your purchase and
welcome you to the exciting world of environmentally friendly, alternative powering.
Before installing the power panel, read all instructions and cautionary markings located in this
manual.
NOTE: The power panel is quite heavy (weighing up to 400 pounds depending upon configuration).
Always use proper lifting techniques during installation to prevent personal injury.
Mounting: The power panel should be mounted indoors in a clean, dry environment. If the panel must be
installed in close proximity to the batteries, make sure the area is adequately ventilated to the outside.
4' x 8' sheet of 3/4" plywood
#12 wood screws (or 3/4" x 1-1/4" lag bolts)
#10 wood screws
1/4" x 3" lag bolts
Conduit and appropriate fittings
Wire nuts (if allowed by code)
Wiring:
All wiring and installation methods should conform to applicable electrical and building codes.
Pre-plan the wire and conduit runs. The ac terminal blocks accept up to a #6 AWG wire; the dc circuit
battery disconnects accept cable sizes up to #4/0 AWG. Use #4/0 AWG for a 250 amp dc disconnect and #2/0
AWG for a 175 amp dc disconnect.
For maximum safety, run both ac and dc wires/cables in (separate) conduits.
AC Connections:
Use #6 AWG THHN wire for all ac wiring.
DC Connections:
Battery to inverter cabling should be only as long as required. If #4/0 AWG cables are used for example,
do not exceed 5 feet (one way) in 12 V dc systems; 10 feet (one way) in 24 V dc systems; or, 15 feet (one
way) for 48 V dc systems. For optimum performance, use pre-assembled battery cables from Trace,
designed specifically for this application.
Grounding:
AC Grounding
The power panel should be connected to a grounded, permanent wiring system. Neutral and Ground
conductors should only be bonded at the main service panel.
DC Grounding
The negative battery conductor should be bonded to the grounding system at only one point in the
system. The size for the conductor is usually based on the size of the largest conductor in the dc system.
The battery voltage MUST match the voltage requirements of the inverter. To determine the correct
voltage for the system, check the last two digits on the inverters model number. For example, the DR1512 is
a 12 volt inverter and requires a 12 V dc battery system. The SW4024 is a 24 volt inverter and requires a 24
V dc battery system.
PV Arrays:
The optional controller is designed to work with a wide variety of PV array systems. DO NOT connect
the controller to an array operating at more than 110 V dc.
WARNING: WHENEVER A PV ARRAY IS EXPOSED TO SUNLIGHT, A SHOCK HAZARD EXISTS AT THE
OUTPUT CABLES OR EXPOSED TERMINALS. TO REDUCE THE RISK OF SHOCK DURING
INSTALLATION, DISCONNECT THE ARRAY, OR COVER IT WITH AN OPAQUE (DARK) MATERIAL
BEFORE MAKING ANY CONNECTIONS TO THE POWER PANEL.
Main Service Panel:
The main input to the Power Panel requires a minimum 60 amp breaker for each 120 V ac inverter. A
15 amp breaker is required for all 230 V ac inverters.
Sub-Panel:
Loads backed up by the Power Panel will need to be rerouted from the main service panel to a subpanel. This can be done several different ways, depending upon the installation. Always refer to electrical
codes for safe wiring practices.
AC Circuit Breakers:
Always use a properly rated circuit breaker. Depending upon the application, circuit breakers used to
protect the load can be removed from the main service panel and put into the sub-panel ONLY if the two
panels are from the same manufacturer and are the same type of service panel.
Wire Routing:
Determine all wire routes both to and from the Power Panel. Possible routing scenarios include:
AC Input wiring from the main service panel to the Power Panel
AC Input wiring from the generator to the Power Panel
DC Input wiring from the PV array to the Power Panel
DC Input wiring from the batteries to the Power Panel
AC Output wiring from the Power Panel to the sub-panel
Battery Temperature Sensor cable from the Power Panel to the batteries
Remote Control cable to the Power Panel
DC Ground from the batteries to an external ground rod
Load circuit wiring rerouted from the main service panel to the sub-panel
Check for existing electrical or plumbing prior to making cuts in the walls. Cut holes in the walls at
appropriate locations for routing wiring/cables.
Plywood Backing:
A 4' x 8' x 3/4" plywood backing may be used to provide additional wall support. It should run the entire
height of the wall (floor to ceiling). For aesthetic purposes, pre-paint the plywood.
NOTE: 3/4" plywood backing is required for supporting walls where the total weight exceeds 300 lbs (136 kg).
NOTE: The mounting recommendations and instructions contained in this section have been developed to
meet seismic code requirements according to the 1997 Uniform Building Code for all seismic regions within
the United States. This applies to light wood framed structures such as those commonly found in residential
construction. If the Power Panel is to be mounted to a structure that is not a residential-type wood framed
wall, and/or the mounting wall supports more than one floor and one roof simultaneously, or if the structure is
classified as a commercial or industrial building, contact the local building inspector for further information
before proceeding with this installation.
The Power Panel can be installed on either a load bearing or non-load bearing wall. Depending upon the
Power Panels components, it can weigh as much as 400 lbs (182 kg). A 4' x 8' x 3/4" sheet of plywood (floor
to ceiling) is recommended to provide additional wall strength. The plywood backing is required for Power
Panels weighing more than 300 lbs (136 kg) installed on load bearing walls.
Procedure
1. Locate the studs in the wall (either 16" or 24" on center) and mark their locations.
2. If plywood is used, apply adhesive to the back and center it on the wall. Secure it into the studs and
around the perimeter using #12 wood screws on 6" spacing. Counter sink the screws. Paint the plywood
to match the surrounding wall color if desired.
3. Using 2 x 4's, build a frame for holding the Power Panel in place while it is being secured. The top of the
frame should be approximately 3-1/2 to 4 feet from the floor. Use 3" x 1/4" lag bolts (on 6" centers) to
mount the 2 x 4. Keep all screws at least 3/4" away from the top of the horizontal 2 x 4 to allow the bottom
flange of the Power Panel to slip behind it. See Figures 2 and 3.
4. Drill pilot holes according to the dimensions in Figure 4.
5. With the help of a friend, lift the Power Panel into position. It should be centered (and level) on the
plywood. Secure the Power Panel using #10 wood screws (on 16" center) or #12 wood screws (on 24"
center) through each of the holes in the backing panel. Avoid hitting the wood screws. Screws must
penetrate 1-3/4" into the framing.
Ceiling
Approximately
3-1/2–4 ft
Wall studs 16 inch on
center
4 ft. x 8 ft. x 3/4 in plywood
backing
Adjust the height of the panel so the
bypass switch is within easy reach
Battery Temperature Sensor (BTS) Wiring (SW Models)
Battery Temperature Sensors (BTS) should be placed on the side of the battery. They transmit
temperature information to the charger and adjust the charging rate according to the battery temperature. Up
to four sensors can be connected in a dual inverter system with two charge controllers.
1. Locate the battery temperature sensors and route them down through the conduit in the DC Disconnect
Box to the batteries.
2. Place all sensors onto the side of same battery (located in the middle of the battery bank) to prevent
different charging rates based on temperature variances.
NOTE: Temperature sensor cables are already connected to the inverters and PV controllers (if ordered). The
cables only need be run through the conduit to the batteries.
Inverters
PV Charge Controllers
BTS Connectors (internal)
BTS Connector
(internal)
See Note
Battery Temperature Sensor
wires.
BTS wires run through the grommets in the
inverter housing and along the back of the
inverter. These wires are already installed
Mount the battery temperature sensors (BTS)
BATTERY TEMPERATURE SENSORS
BATTERY
to the side of the same battery (located in the
middle of the battery bank).
Figure 10
Battery Temperature Sensor (BTS) Wiring
DC Disconnect Box
NOTE: For clarity, wiring not used in this step may not be shown.
Battery Temperature Sensors (BTS) should be placed on the side of the battery. They transmit
temperature information to the charger and adjust the charging rate according to the battery temperature. Up
to four sensors can be connected in a dual inverter system with two charge controllers.
1. Locate the battery temperature sensors and route them down through the conduit in the DC Disconnect
Box to the batteries.
2. Place all sensors onto the side of same battery (located in the middle of the battery bank) to prevent
different charging rates based on temperature variances.
NOTE: Temperature sensor cables are already connected to the inverters and PV controllers (if ordered). The
cables only need be run through the conduit to the batteries.
D
6060
OFF
RED#6AWG
INV 1
D
60
0N0N
D
OFF OFF
INV 2
D
60
OFF
BTS Connector
(front panel)
INV 1 OUTPUT
NEU OUT
NEU IN
INV 1 INPUT
GND
HOT OUT
NEU OUT
NEU IN
HOT IN
GND
DC Disconnect Box
Battery Temperature
Sensor wires.
BAT+ PV+ BAT-PV-PV+BAT+BAT-PV-
ONON
OFF
OFF
BATTERY
DISCONNECT
#2385
#2355
NEUTRAL NOT BONDED TO GROUND
SOLAR
ARRAY
#2360
SOLAR
ARRAY
SOLAR
ARRAY
POSITIVE
NEGATIVE
POSITIVE
NEGATIVE
INVERTER 1
CHARGER: GRN=FLO AT/ORN BLI NK= ABS ORP /ORN= BUL K
BATTERY HI RED/ BATTERY LOW GRN
OVER TEMP RED/OVERLOAD GRN
SEARCH MODE WATTS
INVERTER MODE
POWER ON/OFF
COM PORT
INVERTER 2
CHARGER: GRN=FLO AT/ORN BLI NK= ABS ORP /ORN= BUL K
BATTERY HI RED/ BATTERY LOW GRN
OVER TEMP RED/OVERLOAD GRN
SEARCH MODE WATTS
INVERTER MODE
POWER ON/OFF
COM PORT
NEUTRAL
INPUT AND OUTPUT
SOURCE AND LOAD
GROUND
Battery Type S electo r
LEAD ACID 7
DEEP CYCLE
8
PbCa-MAINTENANCE FREE
6
9
5
GEL CELL
EQUALIZE 1
0
4
EQUALIZE 2
1
3
2
BATTERY CHARGER RATE
OVER-DISCHARGE PROTECTION
AC TRANSFER THRESHOLD
BATTERY CAPACITY
BATTERY SENSE
250
10
.37K
125
25
0
MIN .5K
OFF
60
50
MAX
>100
1K
ON
Amp/Hrs
Battery Type S electo r
DEEP CYCLE LEAD ACID
87
PbCa-MAINTENANCE FREE
6
9
GEL CELL
EQUALIZE 1
5
0
EQUALIZE 2
4
1
3
2
BATTERY CHARGER RATE
OVER-DISCHARGE PROTECTION
AC TRANSFER THRESHOLD
BATTERY CAPACITY
BATTERY SENSE
250
10
125
.37K
25
0
MIN
50
.5K
OFF
60
MAX
1K
>100
ON
Amp/Hrs
10
DANGER:
HAZARD OF ELECTRICAL SHOCK OR BURN.
TURN OFF THE AC AND DC POWER SUPPLYING
THIS EQUIPMENT BEFORE WORKING INSIDE.
THIS SYSTEM MAY RECEIVE POWER FROM
MORE THAN ONE SOURCE. REPLACE COVER
BEFORE TURNING POWER ON.
AVERTISSEMENT:
RISQUE DE CHOCS ELECTRIQUES. NE PAS
TOUCHER LES PARTIES NON ISOLEES DU
CONNECTEUR DE SORTIE OU LE S BORNES
NON ISOLEES DE L’ACCUMULATEUR. COUPER
TOUTLES LES SOURCES D’ALIMENTATIO N
AVANT DE FAIRE L’ENTRETIEN ETLES
REPARATIONS.
L
I
S
T
E
D
R
L
I
D
C
R
S
T
E
67664
TRACE ENGINEERING 5916 195TH ST NE
ARLINGTON, WA. 98223 MADE IN U.S.A.
BTS wires run through the grommets in the inverter housing
and along the back of the inverter. These wires are already
installed
BATTERY TEMPERATURE SENSORS
Battery Temperature Sensor (BTS) Wiring
PN 2355
POWER CONDITIONING UNITS FOR
USE IN PHOTOVOLTAIC POWER
SYSTEMS STANDARD UL1741
COMMERCIAL AND INDUSTRIAL
POWER SUPP L IES
CERTIFIED TO
CAN/CSA-C22.2 No. 107.1-M1
BATTERY
Figure 11
Mount the battery temperature sensors (BTS)
to the side of the same battery (located in the
middle of the battery bank).
Route the battery cables through the conduit to the DC Disconnect Box. Use a minimum of #4/0 AWG
wire for a 250 amp battery disconnect breaker (or #2/0 AWG for a 175 amp battery disconnect breaker).
Smaller diameter wire results in poor inverter performance and the risk of fire due to the wires overheating.
Connect the Negative wires to the negative grounding bond block and tighten connections.
Connect a Positive wire to one of the lower terminals on the Battery Disconnect breaker.
Connect the other Positive wire to the lower terminal on the second Battery Disconnect breaker.
Torque Battery breaker connections to 275 in-lb (23 ft-lb), (31 N-m). Refer to battery manufacturers
specifications for battery terminal torque specifications.
After torquing, coat the battery connections with petroleum jelly or other anticorrosion grease designed
for battery terminals. Do not put any anticorrosion grease between the terminals and the battery cable.
NOTE: Use only
one battery bank for both inverters. Refer to Figure 12 for an example of a battery hookup.
NOTE: Refer to the inverters Operators manual for more detailed examples of battery hookups (i.e., 12 V,
24 V and 48 V).
DC Disconnect Box
Negative Grounding Bond Block
(On opposite side on SW
installations)
Torque to 275 in-lb (23 ft-lb)
Negative 1
Negative 1
CONDUIT FOR
INVERTER 1
OFFONOFF
BATTERY
DISCONNECT
Positive 1
ON
CONDUIT FOR
INVERTER 2
SOLAR
ARRAY
SOLAR
ARRAY
SOLAR
ARRAY
Battery Disconnect 1 Breaker
(DR system shown)
(Disconnect 2 on SW Systems)
Battery Disconnect 2 Breaker
(DR system shown)
(Disconnect 1 on SW Systems)
Positive 1
Positive 2
Negative 2
Positive 2
NOTE: Connect each inverter at
opposite ends of the battery
bank. This balances the current
flowing through the entire bank
and provides an equal charge/
discharge through all of the
batteries.
WARNING: THIS SECTION DEALS WITH WIRING THE MAIN SERVICE UTILITY PANEL TO THE POWER
PANEL. ENSURE THAT ALL AC POWER TO THE UTILITY PANEL IS SWITCHED OFF.
Ground Block
D
GROUN
OFF
0N
60
D
INV 1
D
D
INV 2
D
OFF
60
OFF
0N
60
OFF
60
NEUTRAL
INPUT ANDOUTPUT
SOURCE AND LOAD
Inverter 1 (Top ac breaker)
Inverter 1
Inverter 1
HOT IN L1
HOT OUT L1
*Inverter 2 (Top ac breaker)
*Inverter 2
WHITE
*Inverter 2
HOT IN L2
#6AWG
HOT OUT L2
(Center ac breaker)
(Bottom ac breaker)
(Center ac breaker)
(Bottom ac breaker)
Neutral Block
2903-00-011b
Service Crimps are provided to allow utility
and load connections. DO NOT REMOVE
FACTORY INSTALLED WIRING!
Figure 13
SW Series AC Disconnect Component Identification
NOTE: Service Crimps, provided on the breaker terminals, are for external input (utility) and output (load)
wiring. Do NOT remove existing factory wiring or screws.
WARNING: THIS SECTION DEALS WITH WIRING THE MAIN SERVICE UTILITY PANEL TO THE POWER
PANEL. ENSURE THAT ALL AC POWER TO THE UTILITY PANEL IS SWITCHED OFF.
Service Crimps are provided to allow utility
and load connections. DO NOT REMOVE
FACTORY INSTALLED WIRING!
Neutral Block
Inverter 1
Inverter 1
Inverter 1 (Bottom ac breaker)
*Inverter 2
*Inverter 2
HOT OUT L1
HOT IN L1
NEUTRAL NOTBONDEDTO GROUND
HOT OUT L2
HOT IN L2
(Top ac breaker)
(Center ac breaker)
(Top ac breaker)
(Center ac breaker)
*Inverter 2 (Bottom ac breaker)
WHITE #6AWG
NEUTRAL
INPUT AND OUTPUT
SOURCE AND LOAD
RED#6AWG
GROUND
D
6060
OFF
INV 1
D
60
0N0N
D
OFF OF F
INV 2
D
60
OFF
2903-00-027
Ground Block
Figure 18
DR Series AC Disconnect Component Identification
NOTE: Service Crimps, provided on the breaker terminals, are for external input (utility) and output (load)
wiring. Do NOT remove existing factory wiring or screws.
AC Input/Output Wiring to the Utility and Sub-panel
The following diagrams illustrate wiring the Power Panels to the utility service box and to the sub-panel.
Existing wiring can be used by routing the output of the sub-panel back into the main utility service box and
wire-nut splicing these wires to the existing house wiring. Refer to Figures 23 (single inverter 120 V ac), 24A
and 24B (dual inverter (120/240 V ac) for general wiring diagrams.
WARNING: ENSURE ALL POWER IS DISCONNECTED IN THE MAIN UTILITY BREAKER BOX BEFORE
PROCEEDING.
Select the circuits that require backup power and disconnect them from the main utility breaker.
Mark the breaker as "not used" in the main utility panel.
Wire splice these connections to the output from the sub-panel.
Mark the sub-panel with an appropriate name for this circuit.
NOTE: Check local codes. Wire-nut splices may not be allowed in the main utility panel in some areas. In
these cases, use a separate junction box for these connections and cover with a blank plate.
WARNING: REPLACE CIRCUIT BREAKERS (IN THE SUB-PANEL) WITH EQUALLY RATED BREAKERS.
NEVER INCREASE THE CIRCUIT BREAKER AMPERAGE RATING.
UTILITY FEED
FROM METER
LINE
NEUTRAL
1
MAIN PANEL
120 V AC
120 V AC
240 V AC
NEUTRAL BONDED TO GRO UND
EARTH GROUND
NOTE: FOR ILLUSTRATIVE PURPOSES ONLY.
BREAKER BOXES VARY DEPENDING ON APPLICATION.
MAIN PANEL WIRING TO NON-CRITICAL LOADS
IS NOT ILLUSTRATED.
MAIN
BREAKER
CAUTION:
IN MAIN PANEL ONL Y!
EXISTING 120 V ac HOUSE
WIRING (Each circuit)
FROM
UTILITY
120 V AC FROM
INVERTER
LINE OUT
NEUTRAL
GROUND
LINE OUT
120 V AC BACKUP POWER
NEUTRAL
GROUND
POWER PANEL
Single Inverter
GROUND
120 V AC LINE IN
NEUTRAL
LINE OU T
AC BYPASS BOX
DISCONNECT
TO LOAD
NEUTRAL
GROUND
SUB PANEL
120 V AC BACKUP POWER
TO LOAD
(NEW WIRING)
120 V AC LINE OUT
NEUTRAL
GROUND
2903-00-028
20
Figure 23
AC Input/Output UtilitySub-panel Wiring (Single Inverter Models)
The AC Disconnect is a manual bypass switch that allows the inverter to be removed from the circuit
without de-energizing the connected load. The Power Panel comes with either a single breaker pair for single
inverter applications, or two breaker pairs (L1 and L2) to accommodate two inverters.
The AC Disconnect Module is wired between the primary ac source (utility power or generator) and the
inverters ac input and output. A lockout rocker allows only one breaker to be ON at any given time.
During normal operation, ac power passes from the power utility through the inverter to the ac loads. The
inverter monitors the incoming power and keeps the batteries charged. If utility power fails, the inverter
switches to battery power and continues to power the load. In dual inverter Power Panel installations, a set of
breakers control the bypass function for each inverter independently. If one inverter is bypassed for servicing,
the second inverter will continue to power the loads connected to it.
In the event of an inverter failure, the breakers can be switched to the Inverter Bypass position which
allows the ac loads to be powered directly from utility power. The inverter can then be removed for servicing
without affecting the connected loads.
To de-energize both circuits, switch both breaker pairs to the OFF position.
Under normal operation, the INVERTER OUTPUT breakers are ON.
NOTE: Only one AC Disconnect/Bypass breaker is illustrated below. For dual inverter models, the second
breaker set controls inverter 2 in exactly the same way.
Inverter In Circuit
In this configuration, power passes through the inverter to the connected load. If an ac line failure occurs,
dc from the batteries is routed through the inverter to maintain the load.
INVERTER BYPASS
OFF
60
0N
BREAKER OFF
Bypass circuit is de-energized.
INV 1
OFF
INVERTER OUTPUT
DD
60
2903-00-016
BREAKER ON
Inverter circuit is energized.
Figure 27
Inverter In Circuit (Normal Operation)
Inverter Out of Circuit
In this configuration, power passes directly to the connected load, bypassing the inverter. This allows the
inverter to be removed from service without affecting the connected load. If an ac line failure occurs while the
inverter is switched off, the load will be dropped.
OFF
INVERTER BYPASS
60
BREAKER ON
Bypass circuit is energized.
INV 1
OFF
INVERTER OUTPUT
DD
60
BREAKER OFF
Inverter circuit is de-energized.
2903-00-017
Figure 28
Inverter Out of Circuit
Both AC Line and Inverter OFF
In this configuration, power from both the ac utility and inverter is removed from the circuit. This allows
the inverter, the connected loads, or any other installed equipment beyond the AC Disconnect/Bypass switch
to be serviced.
In the event the inverters do not power up when the dc disconnects are switched on, follow the
procedure below to isolate the problem.
WARNING: THESE STEPS INVOLVE REMOVING THE COVER ON THE DC SIDE OF THE INVERTER,
EXPOSING DANGEROUS VOLTAGES AND SHOULD ONLY BE PERFORMED BY QUALIFIED
PERSONS.
Remove the side cover from the dc side of the inverter (right-hand side extension cover for the SW
series inverter and left-hand side extension cover for the DR series inverter).
Use a dc voltmeter to check the battery voltage on the inverters dc battery input terminals.
Check the connections from the PV array are properly wired. Verify the polarity is correct.
If the measured voltage is appropriate for the battery configuration (12, 24 or 48 V dc), check the polarity
of the voltage. Correct if necessary.
Ensure the batteries are not completely discharged. If the batteries are discharged, they will need to be
externally recharged until the inverters power-up on the dc battery voltage. Once the inverters power-up,
switch on the ac disconnect and ac utility (or generator) power. Allow the inverters to completely
recharge the batteries. Retest for proper dc operation.
Check the battery cables and connections. All connections should be properly torqued.
If the above checks pass and the inverter still does not operate on dc battery voltage, contact the dealer
or Trace Engineering for assistance.
Trace Engineering, Inc., does not recommend the use of any of its products in life support applications or
direct patient care. This especially applies to situations where the products failure or malfunction can be
reasonably expected to cause the failure or malfunction of the life support device, or to significantly affect its
safety or effectiveness.
Examples of life support devices include: neonatal oxygen analyzers, nerve stimulators (whether used for
anesthesia, pain relief, or other purposes), autotransfusion devices, blood pumps, defibrillators, arrhythmia
detectors and alarms, pacemakers, hemodialysis systems, peritoneal dialysis systems, neonatal ventilator
incubators, ventilators for both adults and infants, anesthesia ventilators, and infusion pumps as well as any
other devices designated as critical by the U.S. FDA.
Trace Engineering, Inc., will not knowingly sell its products for use in such applications unless it receives,
in writing, assurances satisfactory to Trace Engineering, Inc., that (a) the risks of injury or damage have been
minimized, (b) the customer assumes all such risks, and (c) the liability of Trace Engineering, Inc., is adequately protected under the circumstances.
Trace Engineering warrants its power products against defects in materials and workmanship for a
period of two (2) years from the date of purchase and extends this warranty to all purchasers or owners of
the product during the warranty period. Trace does not warrant its products from any and all defects:
(1) arising out of material or workmanship not provided by Trace Engineering;
(2) resulting from abnormal use of the product or use in violation of the instructions;
(3) in products repaired or serviced by other than Trace Engineering repair facilities;
(4) in components, parts, or products expressly warranted by another manufacturer.
Trace Engineering agrees to supply all parts and labor, or repair or replace defects covered by this
warranty with parts or products of original or improved design, at its option, if the defective product is returned to any Trace Engineering authorized warranty repair facility or to the Trace Engineering factory in the
original packaging, with all transportation costs and full insurance paid by the purchaser or owner.
All remedies and the measure of damages are limited to the above. Trace Engineering shall in no event
be liable for consequential, incidental, contingent, or special damages, even if Trace Engineering has been
advised of the possibility of such damages. Any and all other warranties, expressed or implied, arising by
law, course of dealing, course of performance, usage of trade or otherwise, including, but not limited to,
implied warranties of merchantability and fitness for a particular purpose, are limited in duration for a period
of two (2) years from the original date of purchase.
Some countries or states do not allow limitations on the term of an implied warranty, or the exclusion or
limitation of incidental or consequential damage, which means the limitations and exclusions of this warranty
may not apply to you. Even though this warranty gives you specific legal rights, you may also have other
rights which vary from state to state.
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5916 - 195th Street N.E., Arlington, WA 98223 Phone: (360) 435-8826 Fax: (360) 435-2229