CECS : 8596 Technical Specification for Construction and Acceptance of Solar Photovoltaic Power System Installation Project CECS85:96
Some standard content:
China Association for Engineering Construction Standardization Standard
85:96
Construction and Acceptance Specification of Solar Photovoltaic Power System Installation Engineering
Specifcation of Construction and Acceptance of Solar Photovoltaic Power System Installation Engineering
1996
China Association for Engineering Construction Standardization Standard, Technical Specification of Construction and Acceptance of Solar Photovoltaic Power System Installation Engineering
CECS85:96
Editor: Communication Engineering Committee
Approval Unit: China Association for Engineering Construction Standardization Effective Date: July 30, 1996bZxz.net
1996 Fuzhou
Pre-construction Inspection
2.1 Equipment room conditions requirements
2.2 Equipment inspection requirements
3 Solar cell array base
3.1 Ground concrete base
3.2 Concrete pole overhead base
4 Installation of array rack
General requirements
4.2 Tilt-adjustable rack
5 Installation of solar cell array
Preparation before installation
Component installation
Array wiring
Array test
Power feeder
Power feeder laying··.·.·...
Connection between power feeder and control cabinet
Power-on inspection
Battery
General provisions
Open type battery
Valve-controlled sealed battery
Solar photovoltaic power control cabinet
Design Equipment installation·
Power-on test·
..s...
9 System protection
10 Project acceptance
Appendix A
Appendix B
Appendix C
Completion technical documents
Acceptance items and contents
Performance table of domestic silicon solar cell modules···Solar cell array test record table
Terms used in this specification
Additional instructions
1 General
1.0.1 This specification is the technical basis for the construction quality, on-site inspection and completion acceptance of ground flat-plate solar photovoltaic power system installation projects, and is applicable to new and expanded projects. Other types of solar photovoltaic power sources can refer to the provisions of this specification. 1.0.2 The installation method, requirements and selected equipment specifications of the solar photovoltaic power system should be carried out in accordance with the provisions of the construction drawing design. 1.0.3 The construction operation procedures formulated by each construction unit shall implement the requirements of this specification, and their provisions shall not conflict with the provisions of this specification. 1.0.4 Each unit shall implement the provisions of the relevant departments' construction project completion acceptance methods in the completion acceptance work, and its acceptance items and requirements shall be handled in accordance with the provisions of this specification. If items that do not comply with the provisions of this specification are found during the construction inspection and completion acceptance work, the reasons shall be found out, the responsibilities shall be clarified, and the items shall be repaired to meet the requirements. 1.0.5 The contents not covered by this specification shall be implemented in accordance with the provisions of relevant national standards. 1.0.6 Reference standards
"Test Methods for Electrical Performance of Ground Solar Cells", "Measurement Methods for Parameters of Solar Cell Modules (Ground Use)", "Technical Specifications for Construction and Acceptance of Telecommunication Power Equipment Installation Project" 2 Pre-construction inspection
Equipment room condition requirements
2.1.1 Before starting construction, the process requirements and relevant conditions for the equipment room building must be checked according to the design, and the construction can only be started when the following conditions are met. 2.1.1.1 The civil engineering related to the equipment room should be completed and the installation conditions are met. 2.1.1.2 The reserved holes, wiring troughs, and pre-buried wire conduits shall meet the design requirements. 2.1.1.3 The orientation and arrangement of the cement foundation for installing the solar cell array shall meet the design requirements.
2.1.1.4 There shall be no obstructions in the lighting direction of the solar cell array. 2.2i
Requirements for equipment inspection
2.2.1 Before starting work, the equipment and materials arriving at the construction site shall be counted and inspected for appearance.
2.2.2 The specifications and procedures of equipment and materials shall meet the design requirements, and unqualified equipment and materials shall not be used in the project. 2.2.3 Unpack and inspect the equipment. Its certificate, manual, test records, accessories, spare parts, etc. shall be complete.
2.2.4 Check the model, specification, quantity and integrity of the solar cell modules according to the design requirements. There shall be no damage such as air leakage, water leakage, cracks, etc. 2.2.5 If the equipment or instruments are found to be damp or damaged, the construction unit shall inspect and test them together with the construction unit and the ordering unit and keep records. If there are any problems, the construction unit shall solve them in time.
3 Solar cell array base
3.1 Ground concrete base
3.1.1 The height of the concrete base from the ground, the base strength and the horizontality deviation shall comply with the design requirements. The horizontal deviation of the base shall not be greater than 3mm/m. 3.1.2 The specifications and buried dimensions of the anchor bolts shall comply with the design requirements, and the exposed length shall not be less than 6cm.
3.1.3 The anchor bolts buried with cement must be cured for more than five days before the rack can be installed.
3.2 Cement pole overhead base
3.2.1 The cement pole erection method and orientation shall comply with the construction drawing requirements. 3.2.2 The specifications and procedures of the cement pole, the guy wire and the anchor shall comply with the design requirements. 3.2.3 The orientation and size of the array platform and the equipment platform, the load-bearing capacity and the distance between them shall comply with the design requirements, and the horizontal deviation of the platform shall not exceed 3mm/m. 3.2.4 The rack base installation fixing holes reserved on the plane of the array platform shall comply with the design requirements.
3.2.5 The installation fixing holes for the control cabinet, battery box and other equipment reserved on the plane of the equipment platform shall comply with the design requirements.
4 Installation of the array rack
4.1 General requirements
4.1.1 The orientation and inclination of the array rack shall comply with the design requirements, and the deviation shall not exceed ±1°.
4.1.2 The horizontal deviation of the rack base shall not exceed 3mm/m. If the base is uneven, it shall be leveled with iron gaskets.
The rack surface of the fixed component shall be flat.
Before installing the component, all connecting bolts on the rack shall be added with anti-loosening gaskets and tightened. 4.1.5
After the rack is installed, the paint film damaged during the installation process should be repainted.
Tilt-adjustable rack
The installation steps and adjustment methods of the tilt-adjustable rack shall be carried out according to the manufacturer's instructions.
4.2.2 The adjustment mechanism should rotate flexibly, the hinge part should be greased, and the adjustment range should meet the design requirements.
4.2.3 After the rack is installed, the inclination of the array should be adjusted to the position specified in the design according to the season at that time.
5 Installation of solar cell array
5.1 Preparation before installation
5.1.1 Before installing the components, each solar cell component should be inspected and tested according to the component parameters, and its parameter values should meet the product factory indicators. General test items are: open circuit voltage, short circuit current. 5.1.2 Components with similar working parameters should be selected and installed in the same sub-array. 5.1.3 Components with equal or similar rated working currents should be selected for series connection. 5.1.4
The threading holes on the component junction box should be processed. 5.2 Component installation
When installing components, they should be handled with care to prevent hard objects from scratching and hitting the surface glass. 5.2.2
The installation position and arrangement of components on the rack should comply with the construction design.
5.2.3 When the component fixing surface does not match the rack surface, iron gaskets should be used to level it before tightening the connecting screws. It is strictly forbidden to use the method of tightening the connecting screws to make them match. 5.2.4 The connecting screws between the component and the rack should be tightened, and anti-loosening measures should be taken according to the design requirements.
5.2.5 The installation of the component on the rack should be straight, and the air duct gap between the components on the rack. The gap between racks should not be less than 8mm.
5.3 Array Wiring
5.3.1 The wiring of the component array should be supported, fastened, and protected. The wires should have an appropriate margin and the wiring method should comply with the requirements of the design drawings. 5.3.2 Wires of different colors should be used as positive (red), negative (blue) and series connection wires.
5.3.3 The wire specifications should comply with the design requirements. 5.3.4 The joints of the connecting wires should be tinned. Multi-strand wires with a cross-section greater than 6mm should be equipped with copper joints (nose). When single-core wires with a cross-section less than 6mm are connected to the component junction box wire, the bending direction of the wire head should be consistent with the direction of the fastening screw. A maximum of two core wires are allowed at each terminal, and a gasket should be added between the two core wires. All wiring screws should be tightened.
5.3.5 After the wiring of the array components is completed, the wiring should be checked and checked according to the construction drawings to see if it is correct. 5.3.6 The connecting wire at the outlet of the component junction box should be bent downward to prevent rainwater from flowing into the junction box.
The component connection wire and the array bow cable should be fixed or tied to the rack with a fixing card.
5.3.8 After the array wiring and inspection are completed, all junction box covers should be covered and locked. 5. 3. 9
The output end of the array should have obvious polarity marks and sub-array number marks. 5.4 Array test
5.4.1 Test conditions
5.4.1.1 The weather is clear and there are no clouds around the sun. 5.4.1.2 The total solar irradiance is not less than 700mw/cm2. 5.4.1.3 The irradiation instability during the test period should not be greater than 1%. The calculation of irradiation instability shall comply with the relevant provisions of the "Electrical Performance Test Method for Ground-based Solar Cells".
5.4.1.4 The surface of the tested array should be clean.
5.4.2 Technical parameter test and requirements
5.4.2.1 The electrical performance parameter test of the array shall comply with the relevant provisions of the "Electrical Performance Test Method for Ground-based Solar Cells" and the "Parameter Measurement Method for Solar Cell Modules (for ground use)".
5.4.2.2 The open circuit voltage of the array shall comply with the design requirements. 5.4.2.3 The maximum output power of the array measured shall not be less than 90% of the total maximum output power of each module.
5.4.2.4 The insulation resistance between the array output terminal and the supporting structure shall not be less than 50M2.
6 Power feeder
Power feeder laying
6.1.1 The specifications and laying routes of the array cable and battery feeder shall comply with the design requirements.
After the feeder passes through the threading pipe, the pipe opening shall be waterproofed according to the design requirements. 6. 1. 3
Cables and feeders shall be made of whole wire materials and shall not be connected in the middle. 6.1.4
The positive and negative ends of the power feeder shall have unified red (positive) and blue (negative) marks, and the cable ends after installation must be sealed with tape and sheath. 6.2 Connection between power feeder and control cabinet
6.2.1 Before connecting the array cable and battery feeder to the control cabinet, the relevant switches or fuses in the control cabinet should be disconnected first, and the operation should be carried out in the order of connecting the battery first and then the array input.
6.2.2 Copper joints should be installed at both ends of the array cable and battery feeder, and the specifications of the copper joints should match the wire diameter.
6.2.3 The contact part between the wire joint and the equipment should be flat and clean, the contact point should be coated with neutral vaseline, the installation should be straight and correct, and the screws should be tightened. 6.2.4 When connecting the power feeder to the control cabinet terminal, the terminal should not be subjected to mechanical stress.
6.2.5 After the power feeder is connected, the cable at the joint should be firmly fixed to the wire card of the control cabinet.
6.3 Power-on inspection
6.3.1 The insulation resistance between the power feeder lines and between the lines and the ground should be greater than 1M2 when the relative humidity is not more than 80%. 6.3.2 The voltage drop of each power feeder line should meet the design requirements. 6.3.3 The insulation resistance and withstand voltage strength between the array output terminal and the supporting structure should meet the design requirements.
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