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INSTALLATION, USE AND
MAINTENANCE

SUNWAY STRING BOX

LT 1500V 24 INPUTS

Rev. 02 - Error! Unknown document property

name.

11 / 43

2.

CAUTION STATEMENTS

This section covers safety statements. The non-observance of the safety instructions below may cause
serious injury or death and equipment failure. Carefully read the instructions below before installing, starting
and operating the equipment.
Only competent personnel must carry out the equipment installation.

2.1. Safety recommendations

Note

Always read this instruction manual thoroughly before starting the equipment.

Danger

ALWAYS PROVIDE FUNCTIONAL EARTH BONDING.
OBSERVE THE PRESCRIPTIONS CONCERNING CONDUCTOR SECTION
INDICATED IN SECTION 11.6.3.

Warning

Do not connect supply voltages which exceed the rated voltage. If voltage
exceeding the rated value is applied, the internal circuits may be damaged.

Do not carry out isolation tests between the power terminals.

Make sure that the screws on the fuses have been tightened correctly.

Observe the ambient conditions for installation.

2.2. Precautions for Use and Prohibitions

Danger

RISK OF ELECTRIC SHOCK
NEVER carry out operations on the equipment when it is powered.
EXPLOSION AND FIRE RISKS
The risk of explosion or fire may exist if the equipment is installed in a room
containing flammable vapours. Do not install the equipment where there is a
risk of explosion or fire.

Prohibition

The product described in this manual has not been designed to operate in
potentially explosive atmospheres. Consequently, installation in such an
environment is strictly prohibited.

Prohibition

It is forbidden to make any technical or mechanical modifications to the
product even when out of warranty.
Enertronica Santerno is not responsible for any risks that may arise due to
unauthorised alterations, modifications or tampering. .

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Содержание LT 1500V

Страница 1: ...Elettronica Santerno S p A Via della Concia 7 40023 Castel Guelfo BO Tel 39 0542 489711 Fax 39 0542 489722 santerno com info santerno com ...

Страница 2: ...changes to the structure or operating cycle of the device must be performed or authorized by Enertronica Santerno Enertronica Santerno assumes no responsibility for the consequences resulting by the use of non original spare parts Enertronica Santerno reserves the right to make any technical changes to this manual and to the device without prior notice If printing errors or similar are detected th...

Страница 3: ...YSTEMS 12 2 6 PERSONAL PROTECTIVE EQUIPMENT 12 2 7 EXECUTION OF WORK 13 2 8 SAFETY PROCEDURE 14 2 8 1 POLYCARBONATE PROTECTIVE PANELS 14 3 DESCRIPTION OF THE PRODUCT 15 3 1 COMPOSITION OF THE SUNWAY STRING BOX LT 15 4 PRODUCT IDENTIFICATION 16 4 1 PRODUCT PART NUMBER 16 4 2 PRODUCT REVISION INDEX 16 4 3 SERIAL NUMBER 16 5 STORAGE AND TRANSPORT 17 5 1 CHECKING THE PRODUCT ON DELIVERY 17 5 2 CONDITI...

Страница 4: ...32 10 1 1 FAULT CONTAINMENT 32 10 2 FAULT ANALYSIS 32 10 2 1 SPDS TRIPPED 33 10 2 2 STRING FUSE BLOWN 33 10 3 DISCONNECTING A STRING 33 10 4 HOW TO CONTACT THE CUSTOM SERVICE 34 11 TECHNICAL DATA 35 11 1 NAMEPLATE 35 11 2 ENVIRONMENTAL REQUIREMENTS FOR STORAGE AND TRANSPORT 35 11 3 INSTALLATION REQUIREMENTS 35 11 4 ELECTRICAL SPECIFICATIONS 36 11 4 1 CHOOSING THE STRING FUSE SIZE 37 11 5 MECHANICA...

Страница 5: ...gure 8 Unpacking the SUNWAY STRING BOX LT 19 Figure 9 Correct mounting 19 Figure 10 Incorrect mounting 19 Figure 11 Removing the polycarbonate cover protecting the output cables and the functional earth 21 Figure 12 Position of the output cable tubing and functional earth cable gland 21 Figure 13 Bottom side view and inside view with string inputs highlighted 23 Figure 14 Routing of cables inside ...

Страница 6: ...connections 23 Table 5 Maintenance sheet 27 Table 6 Environmental requirements for storage and transport 35 Table 7 Installation requirements for SUNWAY STRING BOX LT 1500V 36 Table 8 Electrical ratings 36 Table 9 Fuses recommended based on ISC 37 Table 10 Dimensions and weight of the SUNWAY STRING BOX LT 37 Table 11 Minimum clearance values 38 Table 12 Inputs to be used based on the string curren...

Страница 7: ...rocedures 1 3 Definitions Installer Technician responsible for setting up positioning and installing the equipment in compliance with the system diagram and in accordance with first class professional criteria Operator Worker who has been suitably trained and informed on the risks and relative safety procedures to be adopted The operator can carry out routine maintenance on the equipment Plant man...

Страница 8: ...t national and European safety directives Careful and precise design down to the very last detail and strict quality control guaranteed by standard ISO 9001 are the strong points of a reliable product which is able to maintain its features unaltered over time Designed to last in even the most arduous environmental conditions Enertronica Santerno string boxes guarantee wide safety margins during da...

Страница 9: ...uding o Safety fuses o Parallel connection of the PV generator strings o Surge protection device SPD Output section including o switch disconnector Figure 3 Single line diagram of a SUNWAY STRING BOX LT 1 5 1 Integrated Standard Functions The main integrated standard functions of SUNWAY STRING BOX LT 1500V 24 INPUTS 2 OUTPUTS are listed below Possibility to connect up to 24 strings Fuses on both p...

Страница 10: ...LT 1500V is supplied with a leaflet including the basic safety instructions The following documents are available for download from santerno com Name of the document Scope Installation Guide Contains all the information necessary for the assembly installation and maintenance of the product Table 1 Documentation available for download from santerno com 1 5 3 Preservation of the Documentation All do...

Страница 11: ...pplied the internal circuits may be damaged Do not carry out isolation tests between the power terminals Make sure that the screws on the fuses have been tightened correctly Observe the ambient conditions for installation 2 2 Precautions for Use and Prohibitions Danger RISK OF ELECTRIC SHOCK NEVER carry out operations on the equipment when it is powered EXPLOSION AND FIRE RISKS The risk of explosi...

Страница 12: ...ific Dangers Linked to Photovoltaic PV Systems PV systems have certain characteristics which are the source of additional hazards and are described below A live current source is connected Depending on the operating conditions there may be live voltage from the PV generator or from the electrical grid This must be taken into consideration particularly when disconnecting parts from the system Very ...

Страница 13: ...el These activities must be carried out in observance of health and safety regulations The Standards and Laws governing this aspect vary depending on the personnel involved methods of access and or the tasks which may be carried out on the product and envisage constructive measures aimed at guaranteeing adequate levels of safety Standard EN 50110 1 second edition identifies the people who are gran...

Страница 14: ...tage is not present between the output bars polarities among the poles and the earth Proceed with the operation in question Danger ELECTRIC SHOCK HAZARD High voltage on string cables and output cables 2 8 1 Polycarbonate Protective Panels The SUNWAY STRING BOX LT 1500V is fitted with an internal polycarbonate protective panel Live parts which are most exposed to possible inadvertent contact are pr...

Страница 15: ...erty name 15 43 3 DESCRIPTION OF THE PRODUCT 3 1 Composition of the SUNWAY STRING BOX LT The product comprises fuses on the string inputs of the positive pole fuses on the string inputs of the negative pole a surge protection device SPD switch disconnector Figure 5 Internal view of a SUNWAY STRING BOX LT ...

Страница 16: ...l SB for STRING BOX YY N of strings N of string inputs VV Version LT light WW Optional field Identifies product versions ZZZZ Field voltage 1500 Class 1500V II Insulation class If not present Insulation class I II Insulation class II Table 2 Product name Example SB 24 LT07 1500V II 4 2 Product Revision Index The product revision index is indicated on the nameplate Please refer to section 11 1 4 3 ...

Страница 17: ...to the warranty certificate supplied with the product 5 1 Checking the Product on Delivery On receiving delivery of the equipment make sure that the packaging shows no signs of damage Check that it complies with your order by referring to the nameplates described below In the event of any damage please contact the relative insurance company or the supplier If the delivery does not match your order...

Страница 18: ...G BOX LT 1500V upside down or with its front cover turned upwards Make sure that air can circulate freely around the box Warning Every time the SUNWAY STRING BOX LT 1500V is opened and reclosed it must be done to the highest working standards ensuring that the product remains intact and that no damage is caused to the sealing and fixing elements Before reclosing the front cover always check that t...

Страница 19: ... the Installation Site Warning Being as the ambient conditions significantly affect the life expectancy of the product do not install it where water build up may be created due to dips in the installation surface or where it may be exposed to constant dripping All the parallel string boxes must be installed in upright position as shown in Figure 9 To facilitate installation the parallel string box...

Страница 20: ...tion Connection of the output cable and functional earth bonding Connection of the strings Electricians must wear personal protective equipment 7 2 Connection to the output cables and functional earth Note Some models may be connected to two output cables per pole In this case connect first the lower cable for maximum ease of installation Proceed as follows Remove the polycarbonate panel by only l...

Страница 21: ...f the output cable tubing and functional earth cable gland Connections Function Dedicated cable gland tubing A Positive pole power cables connection bar to the inverter A B Negative pole power cables connection bar to the inverter B FE Functional earth cable connection terminal FE Table 3 Key to the output cable and functional earth connections For information about the sections and the diameters ...

Страница 22: ... provide special anchoring for the output cable Cable anchoring is particularly required for cable cross sections over 240mm2 and when the free cable length exceeds 100cm 7 3 Connecting the strings The connection of the cables to the panels must be made with the shortest possible route in order to minimize the resistive cable drop and therefore the system losses The STRING BOX LT 1500V provides ca...

Страница 23: ...o final product drawings Table 4 Key to string connections The string connections are to be made when the string box is in safe conditions DC switch disconnector open Fuse holders open There is a dangerous voltage up to 1500V on the string cables when they are connected to PV panels exposed to the sunlight Check there is no voltage and in any case wear dielectric gloves Touching cables with live v...

Страница 24: ...puts to be used in case of strings with short circuit currents greater than 11 7A 7 4 Replacing and Inserting the String Fuses Before inserting the fuses inside the string box check the string polarity by measuring voltage between the positive and negative pole of each string on the connection screws of the relative fuse holder All the strings must have positive voltage values approx 10 of the ave...

Страница 25: ...vice in output but are not fitted with protection against short circuits such as fuses in output Fault caused by a short circuit on the output cables must be envisaged during the design phase and appropriate protective measures must be adopted Some design examples 1 If the PV field is composed of multiple SUNWAY STRING BOX LT 1500V the Sunway DC Parallel or input fuses inside the inverter effectiv...

Страница 26: ...INSTALLATION USE AND MAINTENANCE SUNWAY STRING BOX LT 1500V 24 INPUTS Rev 02 Error Unknown document property name 26 43 Figure 16 Short circuit located downstream from the SUNWAY STRING BOX LT 1500V ...

Страница 27: ...cribed in section 0 The minimum maintenance interval is indicated in the table below Equipment installed in an environment where there is a high concentration of dust requires more frequent maintenance than generally indicated The activities described may involve stopping the inverter Once the maintenance procedure has been completed restart the inverter by pressing the START button 8 1 Maintenanc...

Страница 28: ...d make sure that it is properly fastened to the cable gland 8 1 5 Checking the Fuses Routine maintenance entails checking the continuity of the fuses installed to remove the fuses see section 0 8 1 6 Checking the SPDs Inspect the status of the SPDs Surge Protective Devices by checking the status of the button slot on the discharger The exact position of the SPDs can be seen on the Electrical and m...

Страница 29: ...INSTALLATION USE AND MAINTENANCE SUNWAY STRING BOX LT 1500V 24 INPUTS Rev 02 Error Unknown document property name 29 43 ...

Страница 30: ...y be caused by photovoltaic sources that operate as voltage and current generators when exposed to solar radiation Voltage generated by those sources may be dangerous for the operators and may cause electric arcs if they are improperly cut off Safety procedure to follow in order to uninstall a SUNWAY STRING BOX LT Operate exclusively after sunset and before dawn so that no current flowing is to be...

Страница 31: ... property name 31 43 Danger ELECTRIC SHOCK HAZARD If the SUNWAY STRING BOX LT 1500V that has been uninstalled and removed from the plant is not immediately replaced put all the conductors that have been disconnected in safety conditions before restoring the operation of the PV plant section concerned ...

Страница 32: ...erter affected by the fault both up and downstream so that the other inverters can remain in operation If the fault has occurred in one of the components downstream from the inverter AC parallel cabinet external transformer metering cabinet etc STOP all the machines and then press the emergency stop button to cut off the inverter both up and downstream If the fault has occurred in one of the compo...

Страница 33: ... have been performed proceed with rectifying the causes of the fault 10 2 1 SPDs Tripped If the SPDs have tripped replace the cartridges after placing the string box in safe conditions Prohibition It is forbidden to use cartridges different from the ones installed same brand and model required Please refer to section 11 6 4 10 2 2 String Fuse Blown This section describes faults relevant to one or ...

Страница 34: ...gland open If no cable is routed through a cable gland seal it 10 4 How to Contact the Custom Service Should it be necessary to contact the Enertronica Santerno SpA CUSTOMER SERVICE please provide the following data Equipment model Serial Number Date of commissioning Order confirmation reference if available Note Should it be necessary to send the equipment in for repair or to return the equipment...

Страница 35: ...OX LT 1500V nameplate 11 2 Environmental Requirements for Storage and Transport Required conditions for storage Ambient temperature for storage 25 C 55 C the product must be clean dry closed and packed class 1k4 in compliance with EN 60721 3 1 Ambient humidity for storage From 5 to 95 from 1 g m3 to 25 g m3 with no condensation or ice formation class 1k3 in compliance with EN 60721 3 1 Atmospheric...

Страница 36: ...egree of protection IP 65 Degree of pollution IEC EN 60721 3 4 Class 4C2 for chemically active substances Class 4S3 for mechanically active substances Table 7 Installation requirements for SUNWAY STRING BOX LT 1500V 11 4 Electrical Specifications Feature SB 24 LT07 1500V II SB 24 LT08 1500V II SB 24 LT10 1500V II WITH 20 A FUSES SB 24 LT10 1500V II WITH 25 A FUSES INPUT Maximum DC input voltage V ...

Страница 37: ...L HP 15M 12 50 115 28 12 8 8 11 15 PV 15A10F85L HP 15M 15 50 115 28 15 11 14 3 20 PV 20A10F85L HP 15M 20 N A 14 3 17 6 25 PV 10M25F85L HP 15M 25 N A 17 6 22 30 N A HP 15M 30 N A Table 9 Fuses recommended based on ISC WARNING Fuse rating must also comply with the requirements featured in the datasheet issued by the photovoltaic panel manufacturer WARNING The maximum number of strings connected to t...

Страница 38: ... It is necessary to observe the following minimum distances from walls other equipment and objects in order to ensure safety of access and adequate heat dispersion Front mm Side mm Back mm Top mm Bottom mm 700 120 350 450 Table 11 Minimum clearance values 11 5 3 Fastening the Box to its support structure Fasten the box to its support structure with at least N 4 screws M8 in the corners 11 6 Connec...

Страница 39: ...aultrap 9 5 2 5 SEPV 9 5 2 2 5 Warning To get even temperature inside the string box components use string inputs as per the table below Table 12 Inputs to be used based on the string current Max input current ISC ambient 45 C A Max input current ISC ambient 35 C A Number of connected strings Inputs to be not used Up to 11 7 Up to 14 7 21 24 No requirement From 11 7 to 13 5 From 14 75 to 16 9 18 2...

Страница 40: ...rminal Aluminum bar tin plated Tightening torque for bolt M121 Nm 27 to 30 Min max outer diameter of the cable mm 14 46 Panel connector thread M63 Compatible spiral tubing Adaptaflex 54mm type PA PI CP PR e PF Maximum dimensions of cable lug See Figure 20 Suggested cable lug for copper cable Cembre Series A M12 contained palm Cable lug compatible for aluminum cable Cembre Series AA M12 NOTE 1 Use ...

Страница 41: ...le stripping mm 18 Outer diameter of the cable minimum maximum mm 9 17 Cable gland M25 Table 14 Functional earth cable 11 6 4 SPDs Technical specifications for SPDs are provided in the table below Technical Specifications Value Rated voltage of system V 1500 Maximum voltage of system V 1500 Rated discharge current kA 15 Response time ns 25 Residual current mA 1 Configuration Y connection of 3 SPDs...

Страница 42: ...RING BOX LT 1500V 24 INPUTS Rev 02 Error Unknown document property name 42 43 12 ANNEX 12 1 Revision table Revision Notes 0 First issue 1 Minor improvements across the document 2 SB 24 LT10 1500V II model Minor improvements across the document ...

Страница 43: ...INSTALLATION USE AND MAINTENANCE SUNWAY STRING BOX LT 1500V 24 INPUTS Rev 02 Error Unknown document property name 43 43 ...

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