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About this manual

For Readers

This manual is helpful for technicians who install, debug, operate and maintain string inverters of

Please read

this manual carefully before operates

the product

.

Readers are required to know the basic knowledge about electric components, wiring, signs and
mechanical drawings.

Outlines

Chapter

Contents

1 Safety Precautions

This chapter describes the safety precautions when transporting, storing, installing,
running and maintaining the Inverter.

2 Product Description

This chapter describes the basic principles, naming rules, product configuration and
data.

3 System Installation

This chapter describes the unpacking inspection, installation tools, installation
environment, reserved space, fixing method, cable connection.

4 Commissioning
Guide

This chapter describes the inspection before startup, Commissioning and startup of
string inverter.

5 Maintenance and
Troubleshooting

This chapter describes the daily maintenance methods, maintenance intervals and
troubleshooting of the product.

6 Inverter handling
Guide

This chapter describes the basic requirements and precautions when disassembling,
replacing, and scrapping the inverter.

Warning Signs in This Manual

DANGER

It shows that there is a significant potential danger. If the operation is not performed
according to requirements, serious injury or damage may be caused to people or
equipment.

WARNING

It shows that there is a general potential danger. If the operation is not performed
according to requirements, general injury or damage may be caused to people or
equipment.

CAUTION

It shows that there is a general potential danger. If the operation is not performed
according to requirements, general injury or damage may be caused to equipment.

Terms and Abbreviations

Terms/Abbreviations Description

MPPT

Maximum Power Point Tracking

Photovoltaic string

Multiple solar cell arrays in parallel or series.

EEPROM

Electrically Erasable Programmable Read-Only Memory

hopeInsight

A monitoring and debugging software for inverter.

Version Description

Version

Release Date

Description

V1.0

2021-8-5

The first version

Bluesun

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Содержание BSM33K-B

Страница 1: ...Bluesun Series String Inverter User Manual Version V1 0 BSM8K B BSM33K B ...

Страница 2: ...ethods maintenance intervals and troubleshooting of the product 6 Inverter handling Guide This chapter describes the basic requirements and precautions when disassembling replacing and scrapping the inverter Warning Signs in This Manual DANGER It shows that there is a significant potential danger If the operation is not performed according to requirements serious injury or damage may be caused to ...

Страница 3: ... 2 Preparation of installation tools 17 3 3 Installation environment requirements 17 3 4 Requirements for reserved space 18 3 5 Fixing method 19 3 6 Electrical connection 20 3 6 1 Cable requirements 20 3 6 2 Recommended cable specifications 20 3 6 3 Torque requirements 21 3 6 4 Preparation before operation 21 3 6 5 Connect the ground wire 22 3 6 6 Connect the AC output cable 22 3 6 7 Connect the c...

Страница 4: ...d upward avoid strong shock or collision during the transportation 2 Please transport the inverter with package and operate in accordance with the signs and labels during the transportation Please refer to 2 6 Signs and labels for detailed information 3 Please ensure the transportation environment can meet the requirements Please refer to 2 10 Ambient Requirements for detailed information 1 2 Stor...

Страница 5: ...e and result in overheating 5 The terminal of the power cable connected with the inverter must comply with national standard as substandard terminal or disqualified construction may lead to overheating of the power cable and outbreak of fire in severe cases 6 Installation place must meet the operation environment requirements Please refer to 2 10 Ambient Requirements for detailed information 1 4 O...

Страница 6: ...vant personals from entering maintenance scene during the maintenance 3 Please maintain the inverter under the condition of understanding this manual and being equipped with proper tools and test devices 4 Please wear insulating gloves and safety shoes for you safety WARNING Regular check and maintenance must be performed please refer to 5 Maintenance and troubleshooting for details Chapter End ...

Страница 7: ... inputs There are 2 MPPT inside the inverter for MPPT tracking of the strings and then the inverter circuit realizes DC conversion to three phase Alternating current as he schematic diagram below 1 2 1 2 PE I nput EM I Fi l ter M PPT Ci rcui t 1 M PPT Ci rci ut 2 BUS BUS Three l evel i nvert ci rcui t LCL Fi l ter RCD l eakage current detecti on O utput EM I Fi l ter N A B C Figure 2 1 Two input s...

Страница 8: ...andby mode the inverter will enter shutdown mode after detecting the shutdown command or faults Operation 1 Under the operation mode the inverter converts DC current of photovoltaic arrays into AC current and feeds it to the grid The inverter performs MPPT arithmetic and outputs the maximum power of photovoltaic arrays 2 The inverter will enter shutdown mode after detecting the faults or shutdown ...

Страница 9: ...ing center Figure 2 7 Design scheme of the l distributed PV power plant 2 2 2 Supported Grid Form BluesunBSM8K B Bluesun BSM33K B support the TN S TN C TN C S TT IT sys tems in Figure 2 8 Figure 2 8 Schematic diagram of IT system 2 3 Naming Rules 30K B Rated output power 30K 30kW 33K 33kW String inverter series Output side without isolation transformer Figure 2 9 Naming rules BLUESUN BSM 6 ...

Страница 10: ...tection Class I Model BSM30K B Serial No Ingress Protection IP65 Max Output Power 33kW Bluesun Solar Co Ltd www bluesunpv com Nominal Output Voltage 400Va c 230Va c 3P N PE Nominal Output Frequency 50Hz 60Hz Max Output Current 47 8A Rated Output Power 30kW Operating Ambient Temperature 40 to 60 Power Factor 0 8 0 8 lagging leading Max Input Current 40A 40A Isc PV 60A 60A Max Input Voltage 1100Vd c...

Страница 11: ...rs from left to right are described as follows Table 2 1 LED Indicator Description Indicator light Meaning Status Meaning PV and grid connection Blue indicator lights on DC voltage is more than 200V and grid is connected normally Blue indicator flashes DC voltage is more than 200V grid is not connected Blue indicator lights off At least 1 PV array is normally connected On grid operation Blue indic...

Страница 12: ...nverter 1 2 3 6 5 4 No Label Component Name 1 1 6 PV terminals 2 1 6 PV terminals 3 Anti backflow terminal 4 WiFi GPRS communication interface 5 AC OUTPUT AC terminal 6 Fan Figure 2 12 Bottom view of the inverter Note Bluesun BSM8K B 10K B 12K B has only 2 PV inputs at the bottom Bluesun BSM 15K B 17K B has 3 inputs Bluesun BSM 20K B 22K B 25K B has 4 inputs and Bluesun BSM 30K B 33K B has 6 input...

Страница 13: ...y be provided inside and outside the body of the string inverter to remind the user of the safety precautions during operation PE Here is the protective grounding terminal requires reliable grounding to ensure the safety of operators and equipment Warning This component may present a hazard other than high voltage which the user should pay attention to High voltage hazard This component may presen...

Страница 14: ...00VAC Allowable voltage range 300VAC 480VAC Rated output current 11 6A 14 5A 17 4A 21 7A 24 6A Maximum output current 12 7A 16A 19 1A 23 9A 27A Rated grid frequency 50Hz 60Hz Power factor 0 8 0 8 Total harmonic distortion of current 3 System parameters Maximum efficiency 98 60 98 60 98 60 98 61 98 62 European efficiency 98 30 98 30 98 30 98 30 98 30 Insulation impedance test Supported Residual lea...

Страница 15: ...nic distortion of current 3 System parameters Maximum efficiency 98 63 98 65 98 94 98 60 98 60 European efficiency 98 30 98 30 98 26 98 30 98 30 Insulation impedance test Supported Residual leakage current detection Supported String fault detection Supported Output over current protection Supported Protection grade IP65 Cooling mode Intelligent air cooling Standby power consumption 1W Display LED ...

Страница 16: ...rage place Store in a warehouse with air circulation no harmful gases no flammable and explosive substances and no corrosive substances Avoid strong mechanical vibration and impact stay away from strong magnetic fields Ambient temperature 40 70 Relative humidity 95 Mechanical conditions The vibration should not exceed the following limits 10Hz f 57Hz displacement 0 075mm 57Hz f 150Hz acceleration ...

Страница 17: ...d branch current will be derated Relative humidity 100 allow internal condensation Altitude 4000m must be derated above 4000m Mechanical conditions Vibration should not exceed the following limits 10Hz f 57Hz displacement 0 075mm 57Hz f 150Hz acceleration 10m s 2 Chapter end 14 ...

Страница 18: ...e PV PV terminal on the string inverter MC4 Removal tool Remove MC4 terminal Wire stripper Stripping wire Multimeter Measure voltage to ensure safety during wiring and installation Safety protective equipment Labor protection necessary for construction Insulation shoes gloves etc 3 3 Installation environment requirements The environmental requirements for the installation of string inverters are s...

Страница 19: ...300mm 500mm 200mm 1000mm Figure 3 1 Installation space of string inverter When multiple string devices are installed on the same plane it is recommended to install in a straight line 200mm 200mm Figure 3 2 Installation space of string inverter If you need to install it in two rows it is recommended to install them in the shape of triangle 100mm 300mm 100mm 300mm Figure 3 3 Installation space of st...

Страница 20: ...o not install the inverter at an angle tilt forward tilt backward 15 roll horizontally or upside down 15 X X 5 If direct sunlight cannot be avoided please add a sunscreen Installation steps 1 Refer to the fixed hole size of the inverter use a drill with 100mm diameter to make holes in the wall or bracket The hole depth in the wall is about 80mm 2 Unload 4PCS M6 casing reinforced expansion anchor i...

Страница 21: ... is double insulated and shielded both ends of the outermost shield are grounded one end of the inner shield is equipotential grounded b Single shielded twisted pair Signal wires Signal wires Twist the shield layer to a line and connect it to PE Collecting and distributing combiner box When the cable is single insulated and shielded in order to prevent the formation of a potential difference one e...

Страница 22: ... When connecting the cable it is forbidden to operate in electricity and observe the relevant requirements in 1 Safety Precautions 2 Before connecting the cable please complete the following preparations to avoid personal injury 1 Make sure that the DC SWITCH of the inverter is in the OFF state otherwise the high voltage of the inverter may cause electric shock 2 Confirm the positive and negative ...

Страница 23: ...bly disconnected from the power grid And the circuit breaker specifications should meet the technical requirements It is forbidden for multiple inverters to share a circuit breaker It is forbidden to connect the load between the inverter and the circuit breaker Users need to prepare their own cables Recommended value of wire cross sectional area for copper wire is 10mm2 The bolt specification is M...

Страница 24: ...3 System installation A B C N PE Figure 3 9 Grounding of multiple string inverters 21 ...

Страница 25: ... the end and the first pin in the figure below And that will improve the quality of the communication There is no need to short circuit them in other occasions 1 RS485 2 PE 3 RS485 4 Term i nal m atchi ng resi stance I nstal l ati on buckl e bel ow Figure 3 10 Connect cables to the terminal 2 Insert the communication terminal into the anti backflow communication interface after reassemble the comm...

Страница 26: ...e greater than 1100VDC under any circumstances The maximum short circuit current of each PV string should not exceed 15A under any conditions Ensure that the polarity of the DC input side is connected correctly that is the positive electrode of the photovoltaic module is connected to the positive electrode of the DC input terminal of the inverter and the negative electrode is connected to the nega...

Страница 27: ...rt MC4 terminal Insert the positive and negative connectors into the positive and negative terminals of the DC input of the inverter until you hear a click indicating that the terminal is stuck in place Figure 3 16 Connect DC terminals CAUTION After the cable connection of the string inverter is completed check if there is a gap at the waterproof lock and block the gap by fireproof mud If there ar...

Страница 28: ...p of the string inverter cabinet There is enough space around the string inverter to facilitate maintenance and heat dissipation No flammable or explosive items within 2 meters The cable marking is clear and correct Make sure that there is no condensation inside the string inverter If found remove it with a heating tool Make sure that all wiring screws are tightened according to torque requirement...

Страница 29: ...tically 4 3 Power off the system Matters needing attention After the inverter is powered off there will be residual power and residual heat in the chassis which may cause electric shock or burns Be sure to operate the inverter after the inverter system has been powered off for 5 minutes When powering off the system be sure to follow the operation instruction sequence and safety regulations in this...

Страница 30: ...seriously Once every six months to one year System cleaning Whether there are foreign objects and dust on the surface of the inverter Remove foreign objects clean dust Whether the heat sink is blocked or dirty Remove blocker clean dust System running Operating status Whether the inverter makes any abnormal noise during operation Please replace it in time if the noise is loud Once every six months ...

Страница 31: ...2 If it appears frequently please contact technical staff 6 Unit 3 hardware overcurrent Unit 3 overcurrent and reached the hardware wave by wave current limit time 1 Reset and check if the converter works normally 2 If it appears frequently please contact technical staff 7 Unit 4 hardware overcurrent Unit 4 overcurrent and reached the hardware wave by wave current limit time 1 Reset and check if t...

Страница 32: ...se contact technical staff 2 EEPROM read and write fault 1 Reset and check if the converter works normally 2 If it appears frequently please contact 3 FPGA version does not match FPGA and DSP versions do not match 1 Reset and check if the converter works normally 2 If it appears frequently please contact 4 History failure storage failure History failure storage failure 1 Reset and check if the con...

Страница 33: ... by the system 1 Confirm whether the inverter s grid voltage sampling is normal and whether there is a fault such as a box transformer tripped on the AC side at the fault time 2 Confirm whether the inverter is in HVRT 3 Grid AB line undervoltage The voltage of the AB line of the power grid lower than the undervoltage point set by the system Confirm whether the phase loss of the inverter occurs and...

Страница 34: ...e effective value of the inductor current exceeds the protection threshold 1 Reset and check if the converter works normally 2 If it appears frequently please contact 3 Module current imbalance Three phase current unbalance exceeds threshold Confirm whether the power grid is normal 5 Module temperature is too high The temperature of the radiator is higher than the protection threshold Confirm whet...

Страница 35: ...t voltage is lower than the set threshold Check if the switch is open Other 0 Grid connected relay fault Relay status is wrong 1 Reset and check if the converter works normally 2 If it appears frequently please contact 3 SPD alarm on the AC side Detect the SPD feedback status error on the AC side 1 Reset and check if the converter works normally 2 If it appears frequently please contact 4 Internal...

Страница 36: ... need to replace the new inverter just follow the operation sequence in chapters 3 and 4 6 3 Package the inverter If you still keep the original packaging of the inverter put it in the original packaging and secure the packaging with tape If you can t find the original packaging please use a hard carton suitable for the weight and size of the inverter to secure it 6 4 Scrapped the inverter When th...

Страница 37: ...ems arising from incorrect installation and operation as described in the manual Product damage caused by abnormal natural environment Machine damage caused by the use of non standard or non our company components or software The string inverter is damaged due to damage to external equipment Any accidental damage caused by the user s own modification or repair of this product For product failures ...

Страница 38: ...Bluesun Solar Co Ltd Building No 7 1499 Zhenxing Road Shushan District 230031 Hefei China 86 158 5821 3997 86 551 6520 3660 info bluesunpv com www bluesunpv com ...

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