Load Sharing Module - Home Mega Global Solution
Load Sharing Module - Home Mega Global Solution Load Sharing Module - Home Mega Global Solution
Load Sharing Module Manual 26011General Wiring RequirementsThe circled ground symbol identifies the Protective Earth Terminal.This terminal must be connected directly to protective earth using agrounding conductor at least as large as those used on terminals 1through 9. The insulation of the grounding conductor must be of greenand yellow color.This symbol identifies functional or EMC earth. This terminal is to beused for cable shield connections only. It is not to be used as aprotective earth terminal.External wiring connections and shielding requirements for a typical installationare shown in the plant wiring diagram, Figure 1-3. These wiring connections andshielding requirements are explained in more detail in this chapter.To maintain compliance with CE marking requirements, the Low VoltageDirective requires that the Load Sharing Module must only be connected to ClassIII equipment.Wiring for the Load Sharing Module must be suitable for at least 90 °C (194 °F)and also be suitable for the maximum installed operating temperature.The Load Sharing Module must be permanently connected and employ fuses orcircuit breakers in each of the PT lines to limit current to the LSM PT inputs to nomore than 5 A.All terminal block screws must be tightened to 0.56 to 0.79 N·m (5.0 to 7.0 lb-in).To maintain compliance with CE marking requirements, the EMC Directiverequires that all shields be connected to the terminals provided per the plant wiringdiagram, Figure 1-3.Power RequirementsThe Load Sharing Module is powered from the potential transformer connections.Jumpers are used to set the module for the voltage being produced by thegenerator. Jumper terminals 15 to 16 and 17 to 18 when the generator is producing95 to 130 Vac. Jumper terminal 16 to 17 when the generator is producing 190 to260 Vac. Potential transformer burden is 1.6 W per phase with 230 Vac input and0.4 W per phase with 115 Vac input.!CAUTIONMake only jumper connections to terminals 15 through 18. DO NOTMAKE ANY ELECTRICAL CONNECTIONS to these terminals.8 Woodward
Manual 26011Load Sharing ModuleThe unit is shipped with terminals 15–16 and 17–18 jumpered for 95 to 130 voltgeneration. To change to 190–260 volt generation, remove both jumpers andinstall one of the jumpers across terminals 16–17. The other jumper is then notused.Shielded WiringAll shielded cable must be twisted conductors with either a foil or braided shield.Do not attempt to tin (put solder on) the braided shield. All signal lines should beshielded to prevent picking up stray signals from adjacent equipment. Connect theshields to the terminals indicated in the plant wiring diagram. Wire exposedbeyond the shield must be as short as possible.The other end of the shields must be left open and insulated from any otherconductor. Do not run shielded signal wires with other wires carrying largecurrents. See Application Note 50532, EMI Control for Electronic GoverningSystems, for more information.Where shielded cable is required, cut the cable to the desired length and preparethe cable as instructed below and shown in Figure 3-1.Figure 3-1. Preparation of Shielded Cables1. Strip outer insulation from both ends, exposing the braided or spiral wrappedshield. Do not cut the shield on the end nearest to the Load Sharing Module.Cut off the shield on the end away from the unit.2. Use a sharp, pointed tool to carefully spread the strands of the shield.3. Pull the inner conductors out of the shield. Twist braided shields to preventfraying.4. Connect lugs to the shield and to the control wires. Number 6 slotted or roundcrimp-on terminals are used for most installations. Connect the wires to theappropriate terminals on the module.Woodward 9
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- Page 11: Manual 26011Chapter 3InstallationLo
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<strong>Load</strong> <strong>Sharing</strong> <strong>Module</strong> Manual 26011General Wiring RequirementsThe circled ground symbol identifies the Protective Earth Terminal.This terminal must be connected directly to protective earth using agrounding conductor at least as large as those used on terminals 1through 9. The insulation of the grounding conductor must be of greenand yellow color.This symbol identifies functional or EMC earth. This terminal is to beused for cable shield connections only. It is not to be used as aprotective earth terminal.External wiring connections and shielding requirements for a typical installationare shown in the plant wiring diagram, Figure 1-3. These wiring connections andshielding requirements are explained in more detail in this chapter.To maintain compliance with CE marking requirements, the Low VoltageDirective requires that the <strong>Load</strong> <strong>Sharing</strong> <strong>Module</strong> must only be connected to ClassIII equipment.Wiring for the <strong>Load</strong> <strong>Sharing</strong> <strong>Module</strong> must be suitable for at least 90 °C (194 °F)and also be suitable for the maximum installed operating temperature.The <strong>Load</strong> <strong>Sharing</strong> <strong>Module</strong> must be permanently connected and employ fuses orcircuit breakers in each of the PT lines to limit current to the LSM PT inputs to nomore than 5 A.All terminal block screws must be tightened to 0.56 to 0.79 N·m (5.0 to 7.0 lb-in).To maintain compliance with CE marking requirements, the EMC Directiverequires that all shields be connected to the terminals provided per the plant wiringdiagram, Figure 1-3.Power RequirementsThe <strong>Load</strong> <strong>Sharing</strong> <strong>Module</strong> is powered from the potential transformer connections.Jumpers are used to set the module for the voltage being produced by thegenerator. Jumper terminals 15 to 16 and 17 to 18 when the generator is producing95 to 130 Vac. Jumper terminal 16 to 17 when the generator is producing 190 to260 Vac. Potential transformer burden is 1.6 W per phase with 230 Vac input and0.4 W per phase with 115 Vac input.!CAUTIONMake only jumper connections to terminals 15 through 18. DO NOTMAKE ANY ELECTRICAL CONNECTIONS to these terminals.8 Woodward
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