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PowerRouter application guideline

 

Technical information about a self-use installation 

Summary of Contents for PowerRouter PR30S

Page 1: ...1 PowerRouter application guideline Technical information about a self use installation ...

Page 2: ...r the backup power supply 8 External relay for load management 9 Step 3 Connecting the sensor 11 Step 4 Connecting the solar strings 14 Step 5 Connecting the batteries 17 Step 6 Connecting the internet connection 23 Step 7 Initialising the PowerRouter 25 Three phase self use system 27 Glossary 28 ...

Page 3: ...al that comes with the PowerRouter That manual can be downloaded from www PowerRouter com Nedap recommends you read this manual thoroughly before beginning the installation If you have any questions during configuration and installation please get in touch with your local PowerRouter Business Partner The PowerRouter is intended for use in a single family household with a maximum service entrance r...

Page 4: ...to allow sufficient ventilation Maintain a gap of 80 cm above and below the PowerRouter when two systems are mounted one above the other First attach the supplied mounting bracket to the wall A drill template is provided to help you determine where the holes are to be drilled for the mounting bracket Use mounting hardware suitable for the wall to which the PowerRouter is being attached Attach the ...

Page 5: ...s and a master switch must be installed The PV counter designed as an optional extra for the PowerRouter registers the amount of energy derived from the PowerRouter The amount of energy fed into the grid and the amount used from the grid are measured using the bi directional generation consumption meter These three values enable you to calculate the percentage of self use Figure 3 Technical diagra...

Page 6: ...elay UK chint NCI 9508 230 VAC or an equivalent type Recommended external relay rest of Europe PRA1RLY available from your local PowerRouter distributor The mains power supplied to the PowerRouter is connected to the AC GRID terminal see figure 4 and must be between 180 and 264 VAC at a frequency of 45 to 55 Hz Backup power is provided from the AC LOCAL OUT connection and the attached electrical l...

Page 7: ...opper cables with a minimum cross section of 4 mm2 This eliminates unnecessary losses in the internal system and also prevents voltage disconnects caused by high grid impedance when supplying a high output current The diagram below shows that the PowerRouter must increase the AC voltage in order to feed the generated electricity into the grid This is because the impedance of the cable to the on st...

Page 8: ...ntrols the exact moment of switch over which enables it to bring the current provided at AC LOCAL OUT into synch with the mains current as the grid power is restored Another advantage is that delay times can be configured using the PowerRouter Software Installation Tool This makes it possible to prevent the backup power provision from responding to brief power interruptions brown outs For more inf...

Page 9: ...he percentage of value A that must be available before the load will be connected In this example the extra load will be connected once at least 100 of 500 W is being fed back into the grid C The percentage of value A at which the load will be disconnected can be set at 20 200 In this example the extra load will be disconnected once the excess power falls below 20 of 500 W D Delay in seconds befor...

Page 10: ...202 relay 2 and are located to the right of the AC LOCAL OUT connection The potential free contact can be activated in two ways 1 Normal The contact closes when the alarm is activated and opens when the alarm is deactivated 2 Pulse The contact opens and closes at the selected frequency for the configured length of time when the alarm is activated and does so again when the alarm is deactivated Fig...

Page 11: ...The grid and the loads are connected to the PowerRouter s AC GRID connection via a parallel switch 1 phase sensor for consumption monitoring Figure 11 Position of the 1 phase sensor in the self use system It is possible to connect a 1 phase sensor to the PowerRouter Solar Inverter PRxxS to measure single phase consumption It is also possible to connect a 3 phase sensor to the PowerRouter Solar Inv...

Page 12: ...ength is 1 metre but it can be extended with a CAT 5e cable having a maximum length of 10 metres by means of a CAT 5e cable coupling Figure 14 CAT 5e coupling Figure 15 CAT 5e cable Important information about the 3 phase grid connection When a 3 phase grid connection is available the sensor must be connected to the same external conductor to which the PowerRouter is connected During initialisatio...

Page 13: ...stem Figure 16 How a meter with two way communication works The 3 phase sensor must be connected to the home wiring connected directly to the generation consumption meter before any branches to consumers in the house The PowerRouter uses the sensor to measures the amount of energy being consumed at any moment on any phase The PowerRouter only works with this type of 3 phase sensor p n PRA3SENSE an...

Page 14: ...voltage VOC range of 150 600 VDC and is designed for a maximum input current of 15 A Warning The 600 VDC threshold must never be exceeded If the 15 A is exceeded the solar input will limit the current In the morning the PowerRouter switches on at around 150 VDC with a power of 40 W based on 2 solar inputs After switching on the MPP tracker seeks to provide the best possible power output level it d...

Page 15: ...a considerable bearing on safety Nedap therefore recommends that you connect the metal frame to earth The PowerRouter has an earthing bonding terminal to which an earth cable can also be connected Since the photovoltaic section of the PowerRouter is also electrically isolated from the AC part ESD spikes do not affect operation of the PowerRouter Thin film modules produced by various manufacturers ...

Page 16: ...at the PowerRouter can be disconnected from the photovoltaic modules for assembly or maintenance or in an emergency A DC switch is located on the back side of the PowerRouter On PowerRouters with two photovoltaic inputs this switch disconnects both at the same time Figure 20 DC disconnection switch on the PowerRouter ...

Page 17: ...e its own use of the solar power it generates In other words the batteries must be able to store enough energy to meet the power requirements in the home during the evening and night The average energy consumption during non daylight hours can be used to work out the required battery capacity The battery capacity can be compared using the calculation tool at www PowerRouter com This tool enables y...

Page 18: ... to indicate the service life measured in accordance with IEC standards Looking at the number of cycles we can assure one cycle per day This does not include days when the system is in winter mode Deducting two months of operation in winter mode this amounts to 300 cycles per year A cycle is understood to be charging from 50 to 100 and discharging to 50 again Figure 23 Number of cycles versus DOD ...

Page 19: ...life from the battery this is not recommended Winter mode This mode is for using the batteries in the winter when there is less solar output and greater demand This annual cycle is shown in figure 25 as the blue line which represents total household consumption Because solar output only now and again exceeds consumption full charging of the battery occurs less frequently Longer periods without ful...

Page 20: ... remains constant while the charging current gradually drops to a quarter of the bulk current This stage ends once the battery has reached approximately 85 90 of its capacity In stage 3 the charging voltage is reduced to the trickle charge voltage and the battery is gradually charged to 100 This final stage lasts the longest Battery discharge limiter To protect the battery against excessive discha...

Page 21: ...ion This enables the PowerRouter to measure the voltage across the poles of the battery before any voltage losses through the cables and connections Connect a red wire with a 1 A fuse between the pole of the battery and the BAT terminal on the PowerRouter Connect a black wire between the pole of the battery and the BAT terminal on the PowerRouter We recommend you use stranded wire not included Tem...

Page 22: ...he battery terminals are covered with insulating caps during installation This prevents the possibility of a dangerous short circuit if a conductive object falls across the terminals Connecting the battery measuring devices to the PowerRouter The current shunt voltage sense and temperature sensor are connected to the PowerRouter via the connecting rail provided for this purpose see figure 30 Figur...

Page 23: ...ers at myPowerRouter com The information provided by this webportal can be found in the myPowerRouter com brochure This functionality is provided free of charge Figure 31 RJ45 connection for the Internet connection Communication The PowerRouter communicates with the internet via port 80 This port must be available in the network A second condition is that the internet router in the network must pr...

Page 24: ...es on the PowerRouter The monitoring function is also what makes it possible to provide the widgets on the website The widget shown in figure 33 for example displays the system s percentage of self use Another widget shown in figure 34 shows the percentage of the solar energy which has been generated and used in the home Figure 33 Chart showing the self use value available on my PowerRouter com Th...

Page 25: ...werRouter s firmware To upgrade the firmware you need a USB cable and a laptop or PC with the Software Installation Tool In addition to an internet connection there is also a USB connection with which the PowerRouter can be connected to a computer Before the Software Installation Tool can be used it must be installed on the laptop computer The software installation tool can be downloaded from the ...

Page 26: ...city Type Battery type Lead acid wet or gel Charging method 3 state adaptive or fixed voltage Vfloat Fixed charging voltage Specified on the battery datasheet Warning The voltage is often given PER CELL and must be multiplied by the number of cells in the battery Use the standard settings if the charging voltage is not specified Vbulk Bulk charge voltage also called boost Specified on the battery ...

Page 27: ...sed for three phase backup power The PowerRouter is not capable of delivering three phases itself it can only match the three phases of the grid power Single phase backup power is possible however If 1 phase sensors are used the maximum length of an extension cable for the sensor is 10 metres If this is still too short 3 phase sensors can be used which should be configured as 1 phase sensors In th...

Page 28: ...r voltage measurement Absorbed Glass Mat AGM In a normal AGM battery the plates are placed next to each other Otherwise they are similar to a spiral cell battery the electricity is stored in glass fibres These batteries can actually be deployed anywhere The advantage lies in the fact that it is possible to replace any of the batteries You can draw large currents without damaging the battery The sp...

Page 29: ...exactly the right position Dynamic feed in limiter This enables the PowerRouter to limit the amount of energy fed into the grid The sensor measures the power at the grid connection point to ensure that the set limit is adhered to ESD ElectroStatic Discharge External conductor In the light network the external conductor is the wire which has an electrical coupling with the light network voltage Tog...

Page 30: ...r the solar modules generally via an MC4 connector Polycrystalline solar modules Polycrystalline solar cells also known as multicrystalline Like monocrystalline cells except that the effectiveness of these cells is generally somewhat lower and they are dark blue in colour Port 80 The port on an internet router which the PowerRouter uses to communicate with the Nedap web server RJ45 connector Plast...

Page 31: ...parate PE and N lines TT system with neutral conductor the protective earth connection of the consumer is provided by a local connection to earth independent of any earth connection from the grid IT system with neutral conductor the electrical distribution system has no connection to earth at all Voltage measurement Voltage measurement directly across the battery terminals The voltage drop across ...

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