User manual CONTAX LEGEND II

[. . . ] Owner/Operator's Manual Part Number 3179 3DFNDJLQJ 0DWHULDOV Thank you for choosing Trace Engineering products to meet your alternative-energy power needs. We make every effort to ensure that your inverter/charger packaging includes the following materials: Owner's Manual; Red\Black\Green battery terminal covers (with hardware); AC terminal cover (with hardware); Trace bumper sticker; If any of the above listed materials are missing from your package, or if it is unsatisfactory in any manner, please call Customer Service at (360) 435-8826 or fax this page with your comments to (360) 435-2229. Model Number: _____________________________________ Serial Number: _____________________________________ Purchase Date: _____________________________________ Comments: _____________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ Thank you for choosing Trace Engineering to meet your independent power needs. Check out our web site at www. traceengineering. com for more information and answers to your FAQ's. Table of Contents INTRODUCING THE LEGEND SERIES II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] An error in wiring of the neutral-ground switching system is a good place to start troubleshooting. A multimeter may be handy in this troubleshooting procedure. Uhpr@tvrrvt8Dp $( % ($WKTrrI@ Ury"%#"$''!% Ah"%#"$!!!( hprrtvrrvtp QhIir" &( @ssrpvr6t% ((' Qhtr 6yvtX6('!!"VT6 , 167$//$7, 21 AC Source Selector Switch Automatic or Manual Shore Power Generator AC Main Panel 120 Volts AC, 60Hz Water Heater Electric Range Air Conditioner To Inverter AC Hot IN Vehicle Chassis Ground Lights Microwave Refrigerator TV/VCR Outlets Inverter AC Sub-panel Battery Isolator Fuse Block House Battery Bank Vehicle Alternator Vehicle Starting Battery Figure 6, Typical Mobile Installation Diagram Uhpr@tvrrvt8Dp $( % ($WKTrrI@ Ury"%#"$''!% Ah"%#"$!!!( hprrtvrrvtp QhIir" &( @ssrpvr6t% ((' 6yvtX6('!!"VT6 Qhtr , 167$//$7, 21 Neutral-to-Ground Switching All of the Legend Series units employ neutral to ground switching as required by the NEC (National Electric Code). The purpose for this requirement is to ensure that the neutral conductor in a threewire system is "bonded" or connected to ground at only one point. This prevents a voltage difference from developing between the vehicle's neutral and the AC source's neutral, which may cause an electric shock. When the unit is operating as an inverter, the AC output neutral is connected to the chassis ground by an internal relay, creating the bond within the inverter. When operating from an external AC power source the internal relay in the inverter opens and removes the ground from the neutral conductor and allows the "bond" to be provided by the external AC source. The diagram below graphically describes the ground switching system in the inverter for a unit operating as an inverter and feeding the AC sub-panel. Relay RY-A connects the inverter out to the AC HOT output. Relay RY-B connects the NEUTRAL (OUT) to chassis or vehicle ground when AC power is not present at the inverter input. This assures all equipment in the vehicle is referenced to the same ground. AC Sub-panel (Inverter loads) RY-A Inverter AC out RY-B N E U GND HOT OUT Neutral-to-Ground "BOND" is provided by the internal relay for entire AC system NEUTRAL OUT The neutral conductor shall be insulated from the equipment grounding conductors or enclosures Figure 7, Neutral-to-Ground Switching without external AC source Uhpr@tvrrvt8Dp $( % ($WKTrrI@ Ury"%#"$''!% Ah"%#"$!!!( hprrtvrrvtp QhIir" &( @ssrpvr6t% ((' Qhtr 6yvtX6('!!"VT6 , 167$//$7, 21 For this system to work, the AC output neutral of the inverter must be isolated from the ground of the system (usually the green wire). When in the inverter mode, the neutral ground switching relay will automatically connect (bond) the output neutral to ground, and when in charger/pass-through mode, the ground and neutrals will be bonded to one another at the AC source (generator or shore power). The diagram below graphically describes the ground switching system in the inverter for a unit connected to an external AC source (generator, grid etc. ) and passing the AC power through the inverter to the AC sub-panel. Relay RY-A connects the AC input and AC output HOT sides together to allow power to pass through the inverter when AC is present at the inverter inputs. Relay RY-B connects the NEUTRAL (IN) from the external AC source and NEUTRAL (OUT) of the loads together when AC is applied to the inverter. AC Sub-panel (Inverter loads) RY-A Inverter AC out RY-B N E U GND GROUND HOT IN NEUTRAL IN HOT OUT NEUTRAL OUT HOT NEUTRAL GROUND Neutral-to-Ground "BOND" is provided by the external AC source for entire AC system The neutral conductor shall be insulated from the equipment grounding conductors or enclosures Figure 8, Neutral-to-Ground Switching with External AC Uhpr@tvrrvt8Dp $( % ($WKTrrI@ Ury"%#"$''!% Ah"%#"$!!!( hprrtvrrvtp QhIir" &( @ssrpvr6t% ((' 6yvtX6('!!"VT6 Qhtr , 167$//$7, 21 If no neutral to ground switching were employed in an inverter there would be one neutral tied to the AC sub-panel and the other neutral to the vehicle or chassis ground. The two different ground points would now form a current carrying conductor with the vehicle chassis acting as the "wire" between the two different ground points. This means any ground point in the vehicle becomes a potential current careering conductor, which could result in electrical shock. This ground loop could also be a cause for nuisance tripping of any GFCI's (Ground Fault Circuit Interrupter). Disabling Neutral Ground Switching Legend inverters employ neutral-to-ground switching. In countries such as Canada this may be utilized, and therefore may need to be disabled before installation. Check local code if you are not sure whether you must disable the neutral ground switching feature. Note: Connect the chassis ground to the vehicle chassis even if ground switching has been disabled. Disabling the ground switching is very simple if precautions are taken and these steps followed: 1. If the inverter is already installed, disconnect any AC sources (If any are present) 2. Locate the green wire that runs from the circuit board to the chassis ground bolt as shown in the figure below. Cut this wire and wrap the cut end with insulating tape. Chassis ground bolt Cut the green wire here (Neutral to Ground Wire on mobile units only) Figure 9, Disabling Neutral-to-Ground Switching Uhpr@tvrrvt8Dp $( % ($WKTrrI@ Ury"%#"$''!% Ah"%#"$!!!( hprrtvrrvtp QhIir" &( @ssrpvr6t% ((' Qhtr 6yvtX6('!!"VT6 23(5$7, 21 5. Do not cut the green wire that goes from the connector block to the chassis. [. . . ] 54 GFCI's . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 ground equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35, 37 M Maintenance batteries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 maintenance free batteries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]