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Maintenance

The SG250K3 must be maintained at regular period.

Maintenance may include:

1. Inspection of electrical wiring connection

2. Functional test of components like breakers

3. Inspection of contact joints

4. Cleaning the interior of SG250K3

A recommended maintenance period required for SG250K3 is indicated in the

Table 7-1 below.

Table 7-1 Maintenance period

Maintenance work

period

(recommended)

Read out logged data

1 month

Clean the heatsink of power module.

12 months

Inspect the inside of the enclosure for heavy dust deposits, dirt, moisture, and
water penetration from outside.

12 months

Inspect all wiring connections for looseness and secure screws if
necessary.

12 months

Check adhesive warning labels and replace if necessary.

12 months

Check AC and DC main circuit breakers in a manual way

12 months

Emergency stop function test.
Check the function of the emergency stop button and the touch screen stop

function.

12 months

Содержание SG250K3

Страница 1: ...SG250K3 Grid Connected Inverter Operation Manual SG250K3 3A E Ver21 200903 Version 2 1...

Страница 2: ...Release History Version Release Date 2 1 Mar 2009 Author Approved By Chen Wei Zhao Wei...

Страница 3: ...n Manual is to give detail explanations and instructions for operation maintenance and troubleshooting of the SG250K3 Grid Connected Inverter Target Readers The Manual is provided to people who need t...

Страница 4: ...his manual Warning risk of electric shock Caution risk of danger Note Note indicates a feature that is important either for optimal and efficient system operation PROTECTIVE CONDUCTOR TERMINAL Caution...

Страница 5: ...3 2 Start the Inverter 11 3 3 How to Restart after Using the Emergency Stop Button 11 4 Operation 13 4 1 Operation Modes 13 4 2 Modes Transition 14 5 Data Interface 16 5 1 LED Indicators 16 5 2 Touch...

Страница 6: ...en Displayed Fault Troubleshooting 51 9 Appendix A Technical Data 54 9 1 Input Parameters 54 9 2 Output Parameters 54 9 3 Efficiency 54 9 4 Mechanical Parameters 54 9 5 Environmental Parameters 55 9 6...

Страница 7: ...ration system with SG250K3 5 Figure 2 2 Simple circuit diagram of SG250K3 6 Figure 2 3 External appearance of SG250K3 7 Figure 4 1 Transition of operation states 14 Figure 5 1 SG250K3 data interface 1...

Страница 8: ...State explanations of SG250K3 14 Table 5 1 Meaning of LED indicators 16 Table 6 3 Explanations of faults 30 Table 7 1 Maintenance period 48 Table 8 1 LED states during normal working 50 Table 8 2 LED...

Страница 9: ...Safety Instructions Chapter 1 provides some important safety instructions about SG250K3...

Страница 10: ...ng operation Please check the unit is thoroughly shut down and isolated from the public grid and PV arrays before open the front door To avoid the risk of electric shock a minimum 10 minutes is needed...

Страница 11: ...autions Thoroughly inspect the equipment prior to energizing Verify that no tools or equipment have inadvertently been left behind Caution Service Safety Never work alone when servicing this equipment...

Страница 12: ...tch to the off position and press in the 2 handles near the DC breaker to make it pop out from the lock hole at both side doors turn it right Open the left door 3 Switch off the AC breaker turn the sw...

Страница 13: ...4 Introduction Chapter 2 provides basic information about SG250K3...

Страница 14: ...information about SG250K3 2 1 PV Generation System Figure 2 1 PV generation system with SG250K3 As depicted in Figure 2 1 SG250K3 converts the DC power from the PV array to AC power and then feeds the...

Страница 15: ...echnology with the latest IPM Intelligent Power Module to convert the DC power from the photovoltaic array to stable three phase AC power and then feed the power to the utility grid through Figure 2 2...

Страница 16: ...h AC breaker AC side circuit breaker switch Emergency stop button Shut down the inverter when pressed down Doorlock Close or open the case of SG250K3 Start Stop Switch The inverter will only start whe...

Страница 17: ...osition it will give the inverter a stop command like the same command of the emergency stop button The inverter can not start when the switch is pointed to the stop position 2 3 5 DC Breaker The DC b...

Страница 18: ...9 Commissioning Chapter 3 describes the verification and commissioning of SG250K3...

Страница 19: ...t the inverter is connected to the correct grid type and that a right hand rotary field exists on L1 L2 and L3 The value of the AC line to line voltage should be about 400 V 3 1 2 DC Connection Check...

Страница 20: ...l The POWER LED indicator will burn the com LED indicator will flash every 2 or 3 seconds 6 If the DC voltage is below the DC voltage start point Vpv 450V then the state of the touch screen interface...

Страница 21: ...12 Operation Chapter 4 provides instructions about how to operate the SG250K3...

Страница 22: ...rays maximum power point MPP and convert the DC power to AC power Stop during operation The SG250K3 will stop running if The Vpv is less than 400V for 3 minutes A failure occurs Manually stop the inve...

Страница 23: ...tes displayed in the touch screen menu are explained in Table 4 1 Table 4 1 State explanations of SG250K3 State Simple Explanation Key stop The inverter is stopped by touch screen stop command Emer st...

Страница 24: ...15 Data Interface Chapter 5 describes the LED indicators and touch screen data interface of SG250K3...

Страница 25: ...rs 3 big LED indicators are located in the front door of SG250K3 These LED indicators help the users to quickly learn about the states of the SG250K3 inverter Check Table 5 1for their definitions Tabl...

Страница 26: ...or data monitoring tasks 6 buttons right next to the touch screen are used to check or set parameters in the touch screen control menu see Figure 5 2 Figure 5 2 Touch screen panel 5 2 1 The Background...

Страница 27: ...18 Touch screen Menu Chapter 6 gives the detail information and explanations about the SG250K3 touch screen control menu...

Страница 28: ...Function The function of the main menu and it s submenu is described in the table below Main menu 1st Submenu 2nd Submenu 3rd Submenu Control Start Stop Start Stop Home Function Run information Real...

Страница 29: ...re displayed which includes DC current and DC voltage the AC phase current and AC line to line voltage the operation state the output AC power the total generated energy E total and the on day generat...

Страница 30: ...verter 1 In the Default Menu click on the button Control get the popup window as below 2 Click on the button Start to get the window as below 3 To run the PV Inverter by pressing Enter or press Cancel...

Страница 31: ...22 NOTICE Start You can also Start Stop the Inverter by clicking on the button Function to select Start Stop sub menu...

Страница 32: ...Defult menu click on the Button Control get the popup window as left 2 Click on the button Stop to get the window as left 3 Click on the button Stop To get the window as left 4 Press Enter to confirm...

Страница 33: ...ing on the button Function to select Start Stop sub menu Note Manual stop and Emergency stop To the inverter the emergency stop button has the same effect as the manual stop function They both disconn...

Страница 34: ...he Home button to return to the Main Window 2 Click on the button Function get the menu as below 3 Click on the button Run information to get the running information details with Real Time Data Power...

Страница 35: ...pm in a single day the data is updated every second and the length of the block is 1 hour The total diagram data will be cleared at the beginning of a new day The E axis is marked by the percentage of...

Страница 36: ...anation of the data name on Power Curve Data name explanation Unit Temp Temperature within the enclosure h today The Operation time of today Min h total Total hours of Operation time H CO2 Reduced Red...

Страница 37: ...he Home button to return to the Main Window 2 Click on the button Function get the menu as below 3 Click on the button History information to get the long term information details see below 4 History...

Страница 38: ...29 5 History Events 6 History faults 7 History data...

Страница 39: ...n unavailable Dsp flt The control DSP malfunctions Ipm flt The IPM power module malfunctions Cntr flt AC side contactor malfunctions Ttp high Temperature of the main transformer is too high Temp flt T...

Страница 40: ...p or change the system parameter you must enter the right password Here is an example described as follows 1 Click on the Home button to return to the Main Window 2 Click on the button Function get th...

Страница 41: ...ck on the blank space to get the popup window as below 5 Input the password and then press ENT to confirm if wrong number is inputted the window will popup as next window 6 Click the button Enter to t...

Страница 42: ...me button to return to the Main Window 8 Click on the button Function get the menu as below 9 Click on the button Set parameter get the window as below after entering the right passord 10 Click on the...

Страница 43: ...34 11 Click on the button Language to get the language setup window 12 You can choose English Chinese or Spanish by entering the number 0 1 or 2 relatively...

Страница 44: ...button to return to the Main Window 2 Click on the button Function get the menu as below 3 Click on the button Set parameter get the window as below after entering the right passord 4 Click on the bu...

Страница 45: ...36 5 Click on the button Time to get the time setup window 6 You can choose English Chinese or Spanish by entering the number 0 1 or 2 relatively...

Страница 46: ...1 Generated Energy Adjustment 1 Click on the Home button to return to the Main Window 2 Click on the button Function get the menu as below 3 Click on the button Set parameter get the window as below...

Страница 47: ...that the energy readings between LCD and electric meter This generated power adjustment screen is useful in case the total power displayed by touch screen E total has difference with reading value fro...

Страница 48: ...e button to return to the Main Window 2 Click on the button Function get the menu as below 3 Click on the button Set parameter get the window as below after entering the right passord 4 Click on the b...

Страница 49: ...ck on the button Load Default to get the window as below 6 Input the right password all the log history and parameters settings will return to default factory setting 7 The process to load default is...

Страница 50: ...ome button to return to the Main Window 2 Click on the button Function get the menu as below 3 Click on the button Set parameter get the window as below after entering the right passord 4 Click on the...

Страница 51: ...42 5 Input the limit data for the running parameter at the Set value column...

Страница 52: ...Home button to return to the Main Window 2 Click on the button Function get the menu as below 3 Click on the button Set parameter get the window as below after entering the right password 4 Click on t...

Страница 53: ...44 5 Input the limit data for the protection parameter at the Set value column...

Страница 54: ...e Home button to return to the Main Window 2 Click on the button Function get the menu as below 3 Click on the button Set parameter get the window as below after entering the right passord 4 Click on...

Страница 55: ...col Please refer to the installation manual for the connection of the serial port communication The inverter communication address can be in the first line The range of the address is 0 255 The serial...

Страница 56: ...47 Maintenance Chapter 7 describes the maintenance instructions needed to keep SG250K3at its optimum performance...

Страница 57: ...Maintenance work period recommended Read out logged data 1 month Clean the heatsink of power module 12 months Inspect the inside of the enclosurefor heavy dust deposits dirt moisture and water penetr...

Страница 58: ...49 Troubleshooting Chapter 8 gives the basic troubleshooting methods to the customer as a reference...

Страница 59: ...and grid connection wires are OK Disconnect the AC and DC voltage and keep disconnected for 5 min Afterwards reconnect the DC voltage and then the AC voltage If the power LED never light after restar...

Страница 60: ...high or Vac low faults are still being displayed please contact the Sungrow Vac low F fault The grid frequency has exceeded the permissible range Check the grid frequency and grid connections of SG250...

Страница 61: ...heatsink of the IPM is overheat Check whether the output power is too large Check the cooling fan works OK Com flt The communication between the touch screen and the DSP An internal communication fau...

Страница 62: ...53 Appendix...

Страница 63: ...526V Maximum DC Voltage 880 V Maximum DC Current 600A 9 2 AC Parameters Nominal AC Output Power 250KW Grid Voltage 400V 310V 450V Operating Grid Frequency 50 Hz 47 51 5Hz 60Hz 57 61 5Hz Nominal AC Cu...

Страница 64: ...IP20 Ambient Temperature 20 C 40 C Relative Humidity Non condensing 95 9 6 Features Galvanic Isolation Type Low frequency transformer Internal Consumption in stand by 50W Transformer losses at night 0...

Страница 65: ...nd are excluded if they are caused by one or more of the following Improper or inappropriate use of the product Operating the product in an unintended environment Operating the product when ignoring r...

Страница 66: ...of Sungrow is to help our customers acquire stable and clean power with minimum cost maximum reliability and enhanced safety Trademarks is a registered trademark of Sungrow Power Supply Co Ltd Notice...

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