GB 50255-1996 Specification for construction and acceptance of power converter equipment for electrical installation engineering
Some standard content:
Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
Electrical Equipment Installation Engineering
50255-96
Code for Construction and Acceptance of Power Converter Equipment
Published on 1996-06-05
State Bureau of Technical Supervision
Ministry of Construction of the People's Republic of China
Engineering Construction Standard Full-text Information System
Implemented on 1996-12-01
Jointly Issued
Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
Electrical Equipment Installation Engineering
Code for Construction and Acceptance of Power Converter Equipment
Code for Construction and Acceptance of Power Converter Equipment engineeringGB
5025596
Editing department: Ministry of Electric Power Industry of the People's Republic of ChinaApproving department: Ministry of Construction of the People's Republic of ChinaEffective date: December 1, 1996
Engineering construction standard full-text information system
Engineering construction standard full-text information system
Notice on the release of four national standards including "Specifications for construction and acceptance of low-voltage electrical appliances for electrical installation engineering"Jianbiao [1996] No. 337
According to the requirements of the State Planning Commission's document No. Jizong [1986] 2630 and the Ministry of Construction's document No. (91) Jianbiao Ji Zi No. 6, the four standards including "Specifications for construction and acceptance of low-voltage electrical appliances for electrical installation engineering" jointly revised by the Ministry of Electric Power Industry and relevant departments have been reviewed by relevant departments. The "Construction and Acceptance Specification for Low Voltage Electrical Equipment for Electrical Installation Engineering" GB50254-96, "Construction and Acceptance Specification for Power Converter Equipment for Electrical Installation Engineering" GB50255-96, "Construction and Acceptance Specification for Crane Electrical Equipment for Electrical Installation Engineering" GB50256-96 and "Construction and Acceptance Specification for Electrical Equipment for Explosion and Fire Hazardous Environments for Electrical Installation Engineering" GB50257-96 are now approved as mandatory national standards, which will be implemented from December 1, 1996. The seventh chapter "Low Voltage Electrical Equipment", the sixth chapter "Silicon Rectifier Devices", the eighth chapter "Crane Electrical Equipment" and the sixteenth chapter "Electrical Equipment for Explosion and Fire Hazardous Areas" of the original "Construction and Acceptance Specification for Electrical Installation Engineering" GBJ232-82 are abolished at the same time.
This specification is under the management of the Ministry of Electric Power Industry, and the specific interpretation and other work is under the responsibility of the Power Construction Research Institute of the Ministry of Electric Power. The publication and distribution is organized by the Standard and Quota Research Institute of the Ministry of Construction. Ministry of Construction of the People's Republic of China
June 5, 1996
Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
2 Cooling System of Power Converter Equipment
Installation of Power Converter Equipment
Test of Power Converter Equipment
General Provisions
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c00000000006000000000000000000000000000 0004.2 Test of converter device
5 Acceptance and handover of power converter equipment
Additional instructions
Description of standard terms
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1 General
1.0.1 This specification is formulated to ensure the construction quality of power converter equipment installation projects, promote the improvement of engineering construction technology level, and ensure the safe operation of power converter equipment. 1.0.2 This specification applies to the construction, commissioning and acceptance of power converter equipment installation projects composed of power electronic devices and converter transformers. 1.0.3 The installation of power converter equipment should be carried out according to the approved design. 1.0.4 The transportation and storage of power converter equipment and instruments should comply with the relevant provisions of the current national standards. When there are special requirements for the product, it should also comply with the requirements of the product technical documents.
5 The storage period of equipment and instruments before installation should be one year or less. When long-term storage is required, the special regulations for the storage of equipment and instruments should be met. 1.0.6 The equipment and instruments used should comply with the provisions of the current national technical standards and should have product certificates. The equipment should have a nameplate. 1.0.7 After the equipment and instruments arrive at the site, they should be inspected and accepted within the specified period and should meet the following requirements:
1.0.7.1 The packaging and sealing should be good.
1.0.7.2 Check and count according to the packing list. Its specifications, quantity and technical parameters should meet the design requirements. Accessories and spare parts should be complete. 1.0.7.3 The technical documents of the product should be complete and intact. 1.0.7.4 According to the requirements of this specification, the appearance inspection is qualified. 1.0.8 The safety and technical standards during construction should comply with the provisions of this specification and the current relevant safety and technical standards and product technical documents. For important construction projects or processes, corresponding safety and technical measures should be formulated.
1.0.9 The construction of building projects related to the installation of power converter equipment shall meet the following requirements:
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
The construction quality of buildings and structures related to the installation of power converter equipment shall comply with the relevant provisions of the current national construction and acceptance specifications for building projects.
Before the installation of equipment, the construction project shall meet the following conditions: (1) The roof and floor construction shall be completed and there shall be no leakage; (2) The indoor floor, doors and windows, wall painting and other projects shall be completed and shall meet the design requirements;
(3) The foundation, channel, embedded parts, and reserved holes (holes) used for the installation of power converter equipment shall meet the design requirements;
(4) The heating, ventilation, lighting system and other projects shall be basically completed and shall meet the design requirements;
(5) All decoration projects that will damage the installed equipment or cannot be carried out after the equipment is installed shall be completed.
After the equipment is installed and before commissioning, the construction project should meet the following requirements: (1) Clean the dirt on the frame, fill the holes and complete the decoration work; (2) The indoor plastering work should be completed;
(3) Protective mesh doors, railings and other safety facilities should be complete; (4) The construction that cannot be carried out after power is supplied or affects the safety of operation should be completed. 1.0.10 Except for anchor bolts, the fasteners used for equipment installation should be galvanized products. 1.0.11 In addition to complying with the provisions of this specification, the construction and acceptance of power conversion equipment shall also comply with the provisions of the relevant national standards and specifications in force. Engineering Construction Standard Full Text Information System
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Cooling System of Power Conversion Equipment
2.0.1 The installation of the oil-immersed cooling system of the power conversion equipment shall comply with the following provisions: 2.0.1.1 The oil storage tank, valve and pipeline system shall be free of leakage. The new oil added or replaced shall comply with the relevant provisions of the current national standard "Electrical Equipment Acceptance Test Standard for Electrical Installation Engineering". 2.0.1.3 The oil level in the oil storage tank shall be consistent with the calibrated scale indicator line. 2.0.1.4 The sealing material shall be oil-resistant. 2.0.2 The inlet and outlet water pipes of the converter device shall be connected to the cooling system with insulating pipes; when the output voltage of the converter device is below 1000V, the length of the insulating pipe should not be less than 1.5m.
2.0.3 The pipes, valves and pipe fittings of the cooling system shall be blown clean before installation; when ordinary uncoated steel pipes are used for the pipeline, the inner wall of the pipe shall be treated with anti-corrosion according to the design requirements; the inside of the system shall be flushed clean after installation.
2.0.4 The water quality of the water cooling system of the power conversion equipment shall meet the following requirements: 2.0.4.1 When the rated DC voltage of the equipment is below 630V, the conductivity shall not be greater than 0.5ms/m.
When the rated DC voltage of the equipment is between 630 and 1000V, the conductivity shall not be greater than 0.1ms/m.
Note: For equipment below 50V cooled by natural water, the conductivity shall not be greater than 0.04S/m, and the acidity (pH value) shall be 6~9; the total soluble solid content shall not be greater than 1000mg/, and the total hardness (calculated as calcium carbonate) shall be less than 450mg/. 2.0.5 The pipelines of the liquid cooling system shall be unobstructed, and at the rated pressure, its flow rate and outlet water temperature shall comply with the provisions of the product technical conditions. 2.0.6 The connection of cooling pipelines should be correct and reliable, and there should be no kinks or cracks when using hoses for connection.
The pipelines of the liquid cooling system in the converter unit should be subjected to a water pressure test of 200±25kPa for 30 minutes, and there should be no leakage in the pipelines. The oil-immersed oil tank should be subjected to an oil pressure test of 35±5kPa for 12 hours, and there should be no leakage or deformation of the oil tank. The air cooling system should be checked for unobstructed air ducts and no blockage in filters. Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Installation of Power Converter Equipment
3.0.1 The installation of converter cabinets and control cabinets should comply with the relevant provisions of the current national standard "Construction and Acceptance Specifications for Panels, Cabinets and Secondary Circuit Connections of Electrical Installation Engineering". 3.0.2 The converter cabinet and control cabinet should be connected to the foundation with bolts. The connection between modular cabinets should be bolted.
3.0.3 When the non-live metal part of the converter cabinet needs to be grounded, it should comply with the relevant provisions of the current national standard "Construction and Acceptance Specifications for Grounding Devices of Electrical Installation Engineering". 3.0.4 When the non-live metal part of the converter cabinet needs to be insulated from the earth, the ground around the converter cabinet should be insulated: the insulation treatment range and insulation compressive strength around the converter cabinet should meet the design requirements. Within 1.5m from the converter cabinet, pipes, cables, etc. that can be touched under normal circumstances should be separated by an insulating layer. 3.0.5 After the converter cabinet and control cabinet are in place, the dirt inside and outside the cabinet should be cleaned. Ropes and other temporary fixing devices should be removed.
3.0.6 The converter cabinet and control cabinet shall be inspected for appearance and shall meet the following requirements: 3.0.6.1 The name and logo of the plug-in board shall not be misplaced, the circuit in the plug-in board shall be clear, clean, corrosion-free, smooth and burr-free, the lines shall not be broken, and there shall be no adhesion between the lines; the solder joints shall be clearly disconnected; the distance between the adjacent edges of the lines shall comply with the provisions of the relevant national standards in force.
The contact springs of the plug and socket of the connector shall be elastic, and the coating shall be intact, and the contact shall be good and reliable when plugged in. 3.0.6.3 The models, specifications and quantities of converter components, fuses, relays, signal lights, insulators, fans and other devices shall meet the requirements of the technical documents and shall be intact. 3.0.6.4 The wires connected by bolts shall not be loose, and the wire nose crimping shall be firm and without cracking. The wires connected by welding shall not be desoldering, cold soldering, shell contact and short circuit. 3.0.6.5
The positioning marks adjusted when the components and devices leave the factory should not be misplaced. Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
3.0.6.6 The power electronic components fixed on the cooling electrode plate or radiator should not be loose.
3.0.7 The installation of the converter equipment panel and cabinet with a drawer-type structure shall meet the following requirements: 3.0.7.1 The frame of the panel and cabinet should not be deformed; the drawer should be flexible and easy to push and pull.
3.0.7.2 The contact surface and pressure of the moving and static contacts of the plug-in drawer should not be less than the specified value of the product. The mechanical interlocking device of the drawer should be reliable. The frame of the drawer should have good contact with the panel and cabinet.
3.0.7.3 The printed circuit board in the drawer should be flexible when plugging and unplugging, and the contact should be reliable. 3.0.8 The model and specification of the fast fuse shall not be arbitrarily replaced or substituted. 3.0.9
9When the converter element is replaced, the electrical performance of the new element shall meet the following requirements:
3.0.9.1 The tubular size of the new converter element shall be consistent with the replaced element, and its polarity connection shall be correct.
3.0.9.2 The average forward and on-state current shall be consistent with the replaced element; the reverse or forward (reverse) repetitive peak voltage shall not be lower than the replaced converter element value. 3.0.9.3 The average forward or on-state voltage of the converter element of the parallel branch should be consistent with the replaced converter element value.
3.0.9.4 The reverse leakage current of the converter element of the series branch should be consistent with the replaced converter element value.
3.0.9.5 The trigger voltage and current of the replaced thyristor gate should be consistent with the replaced converter element value. Its holding current shall meet the requirements of the product technical conditions. 3.0.10 The disassembly and assembly of converter components shall comply with the following provisions: 3.0.10.1 For bolt-type rectifiers or thyristors, special tools shall be used for disassembly and assembly. For flat-plate rectifiers or thyristors, they shall be disassembled and assembled together with the heat sink. 3.0.10.2 During assembly, silicone grease shall be applied to the contact surface between the heat sink and the converter component, and the tightening torque shall comply with the requirements of the product technical conditions. 3.0.10.3 After the heat sink of the rectifier or thyristor is assembled, the minimum electrical clearance between the phases and between the phases and the ground (shell) shall comply with the requirements of the product technical conditions. 3.0.11 The laying and wiring of power converter equipment shall comply with the following provisions: 3.0.11.1 The laying of control cables, shielded cables and power cables shall comply with the relevant provisions of the current national standard "Construction and Acceptance Specifications for Cable Lines of Electrical Installation Engineering".
3.0.11.2 The pulse connection of the thyristor trigger system should be twisted wire or twisted wire with shielding. When using shielded wire for connection, one end of the shielding layer should be reliably grounded. 3.0.11.3 The wiring of the electrical circuit should be correct, the wiring should be beautiful, and the terminal blocks should have clear numbers; the strong and weak current circuits should be separated, and the connection with the busbar should comply with the relevant provisions of the current national standard "Construction and Acceptance Specifications for Busbar Devices of Electrical Installation Engineering".
The welding of printed circuit boards and electronic components in converter equipment shall comply with the following requirements:
3.0.12.1 It is strictly forbidden to use acidic flux during welding; the dirt on the welding spot should be removed before welding, and welding should be performed after tinning. 3.0.12.2 For soldering of electronic components, it is advisable to use a fast soldering iron with a power of no more than 30W, and the operation time should not be too long.
3.0.12.3 When soldering highly sensitive components, a soldering iron with a voltage no higher than 12V should be used. Or disconnect the power supply of the soldering iron before soldering. 3.0.13 The storage, installation and use of batteries used in power converter equipment shall comply with the relevant provisions of the current national standard "Specifications for Construction and Acceptance of Batteries for Electrical Installation Engineering".
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Testing of Power Converter Equipment
4.1 General Provisions
1 For test items not specified in Article 4.2.1 of this specification, tests may be carried out in accordance with the provisions of the current national relevant standards or product technical conditions. 4.1.1
4.1.2 The commissioning of power conversion equipment should be carried out after the equipment is installed and the quality of the equipment and installation meets the requirements.
4.1.3 The acceptance test of electrical equipment such as converters, transformers, cables, high-voltage electrical appliances or low-voltage electrical appliances in power conversion equipment should comply with the relevant provisions of the current national standard "Electrical Equipment Acceptance Test Standard for Electrical Installation Engineering". 4.1.4 The inspection of measuring instruments and meters in power conversion equipment should comply with the relevant provisions of the current national standard "Electrical Measuring and Indicating Instrument Inspection Regulations" and "Technical Specifications for Construction and Acceptance of Power Construction (Thermal Instruments and Control Devices)". 4.2 Testing of Converter Devices
1 The acceptance test items of various types of power conversion equipment should comply with the provisions of Table 4.2.14.2.1
.
Acceptance test items of various devices of power conversion equipment
Insulation test
Inspection of auxiliary devices
Light load test
Voltage balance test
Engineering 8 Construction Standard Full Text Information System
Controlled rectifier
Inverter power supply4 When the non-live metal part of the converter cabinet needs to be insulated from the ground, the ground around the converter cabinet should be insulated: the insulation treatment range and insulation compressive strength around the converter cabinet should meet the design requirements. Within 1.5m from the converter cabinet, pipes and cables that can be touched under normal circumstances should be separated by an insulating layer. 3.0.5 After the converter cabinet and control cabinet are in place, the dirt inside and outside the cabinet should be cleaned. Ropes and other temporary fixing devices should be removed.
3.0.6 The converter cabinet and control cabinet should be inspected for appearance and should meet the following requirements: 3.0.6.1 The name and logo of the plug-in board should not be misplaced, the circuit in the plug-in board should be clear, clean, corrosion-free, smooth and burr-free, the lines should not be broken, and there should be no adhesion between the lines; each welding point should be clearly disconnected; the distance between adjacent edges of the lines should meet the provisions of the relevant current national standards.
The contact springs of the plugs and sockets of the connectors should be elastic and the coating 3.0.6.2
should be intact, and the contact should be good and reliable when plugged in. 3.0.6.3 The models, specifications and quantities of converter components, fuses, relays, signal lights, insulators, fans and other devices should comply with the requirements of the technical documents and should be intact. 3.0.6.4 The wires connected by bolts should not be loose, and the wire nose crimping should be firm and without cracks. The wires connected by welding should not be desoldering, cold soldering, shell contact and short circuit. 3.0.6.5
The positioning marks adjusted when the components and devices leave the factory should not be misplaced. Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
3.0.6.6 The power electronic components fixed on the cooling electrode plate or radiator should not be loose.
3.0.7 The installation of the inverter equipment panel and cabinet with drawer-type structure shall meet the following requirements: 3.0.7.1 The frame of the panel and cabinet shall not be deformed; the drawer shall be flexible and light when pushed and pulled.
3.0.7.2 The contact surface and pressure of the moving and static contacts of the plug-in drawer shall not be less than the specified value of the product. The mechanical interlocking device of the drawer shall be reliable. The frame of the drawer shall have good contact with the panel and cabinet.
3.0.7.3 The printed circuit board in the drawer shall be flexible when plugged in and out, and the contact shall be reliable. 3.0.8 The model and specification of the fast fuse shall not be arbitrarily replaced or substituted. 3.0.9
9 When the inverter element is replaced, the electrical performance of the newly replaced element shall meet the following requirements:
3.0.9.1 The tubular size of the newly replaced inverter element shall be consistent with the replaced element, and its polarity connection shall be correct.
3.0.9.2 The average forward and on-state currents shall be consistent with those of the replaced components; the reverse or forward (reverse) repetitive peak voltage shall not be lower than the value of the replaced converter component. 3.0.9.3 The average forward or on-state voltage of the converter component of the parallel branch should be consistent with that of the replaced converter component.
3.0.9.4 The reverse leakage current of the converter component of the series branch should be consistent with that of the replaced converter component.
3.0.9.5 The trigger voltage and current of the replaced thyristor gate should be consistent with that of the replaced converter component. Its holding current should comply with the provisions of the product technical conditions. 3.0.10 The disassembly and assembly of the converter component shall comply with the following provisions: 3.0.10.1 For bolt-type rectifiers or thyristors, special tools should be used for disassembly and assembly.
For flat-plate rectifiers or thyristors, they should be disassembled and assembled at the same time as the heat sink. 3.0.10.2 During assembly, silicone grease should be applied to the contact surface between the heat sink and the converter element, and the tightening torque should meet the requirements of the product technical conditions. 3.0.10.3 After the heat sink of the rectifier or thyristor is assembled, the minimum electrical clearance between the phases and between the phases and the ground (shell) should meet the requirements of the product technical conditions. 3.0.11 The cable laying and wiring of power converter equipment shall comply with the following provisions: 3.0.11.1 The laying of control cables, shielded cables and power cables shall comply with the relevant provisions of the current national standard "Construction and Acceptance Specifications for Cable Lines of Electrical Installation Engineering".
3.0.11.2 The pulse connection of the thyristor trigger system should use twisted wire or twisted wire with shielding. When using shielded wire for connection, one end of the shielding layer should be reliably grounded. 3.0.11.3 The wiring of the electrical circuit should be correct, the wiring should be beautiful, and the terminal should have clear numbers; the strong and weak current circuits should be separated, and the connection with the busbar should comply with the relevant provisions of the current national standard "Construction and Acceptance Specifications for Busbar Installations in Electrical Installation Engineering".
The welding of printed circuit boards and electronic components in converter equipment should meet the following requirements:
3.0.12.1 It is strictly forbidden to use acidic flux during welding; the dirt at the welding point should be removed before welding, and welding should be performed after tinning. 3.0.12.2 For welding of electronic components, it is advisable to use a fast electric soldering iron of no more than 30W, and the operation time should not be too long.
3.0.12.3 When welding highly sensitive components, a soldering iron with a voltage not higher than 12V should be used. Or disconnect the power supply of the soldering iron before welding. 3.0.13 The storage, installation and use of batteries used in power conversion equipment shall comply with the relevant provisions of the current national standard "Electrical Installation Installation Engineering Battery Construction and Acceptance Specifications".
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Testing of Power Conversion Equipment
4.1 General Provisions
1 The test items not specified in Article 4.2.1 of this specification may be tested in accordance with the provisions of the current national relevant standards or product technical conditions. 4.1.1
4.1.2 The commissioning of power conversion equipment shall be carried out after the equipment is installed and the quality of the equipment and installation meets the requirements.
4.1.3 The acceptance test of electrical equipment such as converters, transformers, cables, high-voltage electrical appliances or low-voltage electrical appliances in power conversion equipment shall comply with the relevant provisions of the current national standard "Electrical Equipment Acceptance Test Standard for Electrical Installation Engineering". 4.1.4 The inspection of measuring instruments and meters in power conversion equipment shall comply with the relevant provisions of the current national standards "Inspection Procedures for Electrical Measuring and Indicating Instruments" and "Technical Specifications for Construction and Acceptance of Power Construction (Thermal Instruments and Control Devices)". 4.2 Testing of converter devices
1 The acceptance test items for various types of power conversion equipment should comply with the provisions of Table 4.2.14.2.1
.
Acceptance test items for various types of power conversion equipmentTest
Insulation test
Inspection of auxiliary devices
Light load test
Voltage balance test
Engineering 8 Construction Standard Full Text Information System
Controlled rectifier
Inverter power supply4 When the non-live metal part of the converter cabinet needs to be insulated from the ground, the ground around the converter cabinet should be insulated: the insulation treatment range and insulation compressive strength around the converter cabinet should meet the design requirements. Within 1.5m from the converter cabinet, pipes and cables that can be touched under normal circumstances should be separated by an insulating layer. 3.0.5 After the converter cabinet and control cabinet are in place, the dirt inside and outside the cabinet should be cleaned. Ropes and other temporary fixing devices should be removed.
3.0.6 The converter cabinet and control cabinet should be inspected for appearance and should meet the following requirements: 3.0.6.1 The name and logo of the plug-in board should not be misplaced, the circuit in the plug-in board should be clear, clean, corrosion-free, smooth and burr-free, the lines should not be broken, and there should be no adhesion between the lines; each welding point should be clearly disconnected; the distance between adjacent edges of the lines should meet the provisions of the relevant current national standards.
The contact springs of the plugs and sockets of the connectors should be elastic and the coating 3.0.6.2
should be intact, and the contact should be good and reliable when plugged in. 3.0.6.3 The models, specifications and quantities of converter components, fuses, relays, signal lights, insulators, fans and other devices should comply with the requirements of the technical documents and should be intact. 3.0.6.4 The wires connected by bolts should not be loose, and the wire nose crimping should be firm and without cracks. The wires connected by welding should not be desoldering, cold soldering, shell contact and short circuit. 3.0.6.5
The positioning marks adjusted when the components and devices leave the factory should not be misplaced. Engineering Construction Standard Full-text Information System
Engineering Construction Standard Full-text Information System
3.0.6.6 The power electronic components fixed on the cooling electrode plate or radiator should not be loose.
3.0.7 The installation of the inverter equipment panel and cabinet with drawer-type structure shall meet the following requirements: 3.0.7.1 The frame of the panel and cabinet shall not be deformed; the drawer shall be flexible and light when pushed and pulled.
3.0.7.2 The contact surface and pressure of the moving and static contacts of the plug-in drawer shall not be less than the specified value of the product. The mechanical interlocking device of the drawer shall be reliable. The frame of the drawer shall have good contact with the panel and cabinet.
3.0.7.3 The printed circuit board in the drawer shall be flexible when plugged in and out, and the contact shall be reliable. 3.0.8 The model and specification of the fast fuse shall not be arbitrarily replaced or substituted. 3.0.9
9 When the inverter element is replaced, the electrical performance of the newly replaced element shall meet the following requirements:
3.0.9.1 The tubular size of the newly replaced inverter element shall be consistent with the replaced element, and its polarity connection shall be correct.
3.0.9.2 The average forward and on-state currents shall be consistent with those of the replaced components; the reverse or forward (reverse) repetitive peak voltage shall not be lower than the value of the replaced converter component. 3.0.9.3 The average forward or on-state voltage of the converter component of the parallel branch should be consistent with that of the replaced converter component.
3.0.9.4 The reverse leakage current of the converter component of the series branch should be consistent with that of the replaced converter component.
3.0.9.5 The trigger voltage and current of the replaced thyristor gate should be consistent with that of the replaced converter component. Its holding current should comply with the provisions of the product technical conditions. 3.0.10 The disassembly and assembly of the converter component shall comply with the following provisions: 3.0.10.1 For bolt-type rectifiers or thyristors, special tools should be used for disassembly and assembly.
For flat-plate rectifiers or thyristors, they should be disassembled and assembled at the same time as the heat sink. 3.0.10.2 During assembly, silicone grease should be applied to the contact surface between the heat sink and the converter element, and the tightening torque should meet the requirements of the product technical conditions. 3.0.10.3 After the heat sink of the rectifier or thyristor is assembled, the minimum electrical clearance between the phases and between the phases and the ground (shell) should meet the requirements of the product technical conditions. 3.0.11 The cable laying and wiring of power converter equipment shall comply with the following provisions: 3.0.11.1 The laying of control cables, shielded cables and power cables shall comply with the relevant provisions of the current national standard "Construction and Acceptance Specifications for Cable Lines of Electrical Installation Engineering".
3.0.11.2 The pulse connection of the thyristor trigger system should use twisted wire or twisted wire with shielding. When using shielded wire for connection, one end of the shielding layer should be reliably grounded. 3.0.11.3 The wiring of the electrical circuit should be correct, the wiring should be beautiful, and the terminal should have clear numbers; the strong and weak current circuits should be separated, and the connection with the busbar should comply with the relevant provisions of the current national standard "Construction and Acceptance Specifications for Busbar Installations in Electrical Installation Engineering".
The welding of printed circuit boards and electronic components in converter equipment should meet the following requirements:
3.0.12.1 It is strictly forbidden to use acidic flux during welding; the dirt at the welding point should be removed before welding, and welding should be performed after tinning. 3.0.12.2 For welding of electronic components, it is advisable to use a fast electric soldering iron of no more than 30W, and the operation time should not be too long.
3.0.12.3 When welding highly sensitive components, a soldering iron with a voltage not higher than 12V should be used. Or disconnect the power supply of the soldering iron before welding. 3.0.13 The storage, installation and use of batteries used in power conversion equipment shall comply with the relevant provisions of the current national standard "Electrical Installation Installation Engineering Battery Construction and Acceptance Specifications".
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Testing of Power Conversion Equipment
4.1 General Provisions
1 The test items not specified in Article 4.2.1 of this specification may be tested in accordance with the provisions of the current national relevant standards or product technical conditions. 4.1.1
4.1.2 The commissioning of power conversion equipment shall be carried out after the equipment is installed and the quality of the equipment and installation meets the requirements.
4.1.3 The acceptance test of electrical equipment such as converters, transformers, cables, high-voltage electrical appliances or low-voltage electrical appliances in power conversion equipment shall comply with the relevant provisions of the current national standard "Electrical Equipment Acceptance Test Standard for Electrical Installation Engineering". 4.1.4 The inspection of measuring instruments and meters in power conversion equipment shall comply with the relevant provisions of the current national standards "Inspection Procedures for Electrical Measuring and Indicating Instruments" and "Technical Specifications for Construction and Acceptance of Power Construction (Thermal Instruments and Control Devices)". 4.2 Testing of converter devices
1 The acceptance test items for various types of power conversion equipment should comply with the provisions of Table 4.2.14.2.1
.
Acceptance test items for various types of power conversion equipmentTest
Insulation test
Inspection of auxiliary devices
Light load test
Voltage balance test
Engineering 8 Construction Standard Full Text Information System
Controlled rectifier
Inverter power supply8 The model and specification of fast fuses shall not be arbitrarily replaced or substituted. 3.0.9
9 When the converter element is replaced, the electrical performance of the newly replaced element shall meet the following requirements:
3.0.9.1 The tubular size of the newly replaced converter element shall be consistent with the replaced element, and its polarity connection shall be correct.
3.0.9.2 The average forward and on-state current shall be consistent with the replaced element; the reverse or forward (reverse) repetitive peak voltage shall not be lower than the value of the replaced converter element. 3.0.9.3 The average forward or on-state voltage of the converter element of the parallel branch should be consistent with the value of the replaced converter element.
3.0.9.4 The reverse leakage current of the converter element of the series branch should be consistent with the value of the replaced converter element.
3.0.9.5 The trigger voltage and current of the replaced thyristor gate should be consistent with the value of the replaced converter element. Its holding current shall comply with the provisions of the product technical conditions. 3.0.10 The disassembly and assembly of the converter elements shall comply with the following provisions: 3.0.10.1 For bolt-type rectifiers or thyristors, special tools shall be used for disassembly and assembly. For flat-plate rectifiers or thyristors, they shall be disassembled and assembled at the same time as the heat sink. 3.0.10.2 During assembly, silicone grease should be applied to the contact surface between the heat sink and the converter element, and the tightening torque shall comply with the requirements of the product technical conditions. 3.0.10.3 After the heat sink of the rectifier or thyristor is assembled, the minimum electrical clearance between the phases and between the phases and the ground (housing) shall comply with the requirements of the product technical conditions. 3.0.11 The laying and wiring of power converter equipment shall comply with the following provisions: 3.0.11.1 The laying of control cables, shielded cables and power cables shall comply with the relevant provisions of the current national standard "Construction and Acceptance Specifications for Cable Lines of Electrical Installation Engineering".
3.0.11.2 The pulse connection of the thyristor trigger system should be twisted wire or twisted wire with shielding. When using shielded wire for connection, one end of the shielding layer should be reliably grounded. 3.0.11.3 The wiring of the electrical circuit should be correct, the wiring should be beautiful, and the terminal blocks should have clear numbers; the strong and weak current circuits should be separated, and the connection with the busbar should comply with the relevant provisions of the current national standard "Construction and Acceptance Specifications for Busbar Devices of Electrical Installation Engineering".
The welding of printed circuit boards and electronic components in converter equipment shall comply with the following requirements:
3.0.12.1 It is strictly forbidden to use acidic flux during welding; the dirt on the welding spot should be removed before welding, and welding should be performed after tinning. 3.0.12.2 For soldering of electronic components, it is advisable to use a fast soldering iron with a power of no more than 30W, and the operation time should not be too long.
3.0.12.3 When soldering highly sensitive components, a soldering iron with a voltage no higher than 12V should be used. Or disconnect the power supply of the soldering iron before soldering. 3.0.13 The storage, installation and use of batteries used in power converter equipment shall comply with the relevant provisions of the current national standard "Specifications for Construction and Acceptance of Batteries for Electrical Installation Engineering".
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Testing of Power Converter Equipment
4.1 General Provisions
1 For test items not specified in Article 4.2.1 of this specification, tests may be carried out in accordance with the provisions of the current national relevant standards or product technical conditions. 4.1.1
4.1.2 The commissioning of power conversion equipment should be carried out after the equipment is installed and the quality of the equipment and installation meets the requirements.
4.1.3 The acceptance test of electrical equipment such as converters, transformers, cables, high-voltage electrical appliances or low-voltage electrical appliances in power conversion equipment should comply with the relevant provisions of the current national standard "Electrical Equipment Acceptance Test Standard for Electrical Installation Engineering". 4.1.4 The inspection of measuring instruments and meters in power conversion equipment should comply with the relevant provisions of the current national standard "Electrical Measuring and Indicating Instrument Inspection Regulations" and "Technical Specifications for Construction and Acceptance of Power Construction (Thermal Instruments and Control Devices)". 4.2 Testing of Converter Devices
1 The acceptance test items of various types of power conversion equipment should comply with the provisions of Table 4.2.14.2.1
.
Acceptance test items of various devices of power conversion equipment
Insulation test
Inspection of auxiliary devices
Light load test
Voltage balance test
Engineering 8 Construction Standard Full Text Information System
Controlled rectifier
Inverter power supply8 The model and specification of fast fuses shall not be arbitrarily replaced or substituted. 3.0.9
9 When the converter element is replaced, the electrical performance of the newly replaced element shall meet the following requirements:
3.0.9.1 The tubular size of the newly replaced converter element shall be consistent with the replaced element, and its polarity connection shall be correct.
3.0.9.2 The average forward and on-state current shall be consistent with the replaced element; the reverse or forward (reverse) repetitive peak voltage shall not be lower than the value of the replaced converter element. 3.0.9.3 The average forward or on-state voltage of the converter element of the parallel branch should be consistent with the value of the replaced converter element.
3.0.9.4 The reverse leakage current of the converter element of the series branch should be consistent with the value of the replaced converter element.
3.0.9.5 The trigger voltage and current of the replaced thyristor gate should be consistent with the value of the replaced converter element. Its holding current shall comply with the provisions of the product technical conditions. 3.0.10 The disassembly and assembly of the converter elements shall comply with the following provisions: 3.0.10.1 For bolt-type rectifiers or thyristors, special tools shall be used for disassembly and assembly. For flat-plate rectifiers or thyristors, they shall be disassembled and assembled at the same time as the heat sink. 3.0.10.2 During assembly, silicone grease should be applied to the contact surface between the heat sink and the converter element, and the tightening torque shall comply with the requirements of the product technical conditions. 3.0.10.3 After the heat sink of the rectifier or thyristor is assembled, the minimum electrical clearance between the phases and between the phases and the ground (housing) shall comply with the requirements of the product technical conditions. 3.0.11 The laying and wiring of power converter equipment shall comply with the following provisions: 3.0.11.1 The laying of control cables, shielded cables and power cables shall comply with the relevant provisions of the current national standard "Construction and Acceptance Specifications for Cable Lines of Electrical Installation Engineering".
3.0.11.2 The pulse connection of the thyristor trigger system should be twisted wire or twisted wire with shielding. When using shielded wire for connection, one end of the shielding layer should be reliably grounded. 3.0.11.3 The wiring of the electrical circuit should be correct, the wiring should be beautiful, and the terminal blocks should have clear numbers; the strong and weak current circuits should be separated, and the connection with the busbar should comply with the relevant provisions of the current national standard "Construction and Acceptance Specifications for Busbar Devices of Electrical Installation Engineering".
The welding of printed circuit boards and electronic components in converter equipment shall comply with the following requirements:
3.0.12.1 It is strictly forbidden to use acidic flux during welding; the dirt on the welding spot should be removed before welding, and welding should be performed after tinning. 3.0.12.2 For soldering of electronic components, it is advisable to use a fast soldering iron with a power of no more than 30W, and the operation time should not be too long.
3.0.12.3 When soldering highly sensitive components, a soldering iron with a voltage no higher than 12V should be used. Or disconnect the power supply of the soldering iron before soldering. 3.0.13 The storage, installation and use of batteries used in power converter equipment shall comply with the relevant provisions of the current national standard "Specifications for Construction and Acceptance of Batteries for Electrical Installation Engineering".
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Testing of Power Converter Equipment
4.1 General Provisions
1 For test items not specified in Article 4.2.1 of this specification, tests may be carried out in accordance with the provisions of the current national relevant standards or product technical conditions. 4.1.1
4.1.2 The commissioning of power conversion equipment should be carried out after the equipment is installed and the quality of the equipment and installation meets the requirements.
4.1.3 The acceptance test of electrical equipment such as converters, transformers, cables, high-voltage electrical appliances or low-voltage electrical appliances in power conversion equipment should comply with the relevant provisions of the current national standard "Electrical Equipment Acceptance Test Standard for Electrical Installation Engineering". 4.1.4 The inspection of measuring instruments and meters in power conversion equipment should comply with the relevant provisions of the current national standard "Electrical Measuring and Indicating Instrument Inspection Regulations" and "Technical Specifications for Construction and Acceptance of Power Construction (Thermal Instruments and Control Devices)". 4.2 Testing of Converter Devices
1 The acceptance test items of various types of power conversion equipment should comply with the provisions of Table 4.2.14.2.1
.
Acceptance test items of various devices of power conversion equipment
Insulation test
Inspection of auxiliary devices
Light load test
Voltage balance test
Engineering 8 Construction Standard Full Text Information System
Controlled rectifier
Inverter power supply1
Regulations.
Acceptance test items for various types of power conversion equipment Test
Insulation test
Inspection of auxiliary devices
Light load test
Voltage balance test
Engineering 8 Construction Standard Full Text Information System
Controlled rectifier
Inverter power supply1
Regulations.
Acceptance test items for various types of power conversion equipment Test
Insulation test
Inspection of auxiliary devices
Light load test
Voltage balance test
Engineering 8 Construction Standard Full Text Information System
Controlled rectifier
Inverter power supply
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