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GB/T 12786-2021 English PDF

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Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 12786-2021 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$519.00 · In stock
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GB/T 12786-2021: General technical conditions for automatic internal combustion engine power stations
Status: Valid

GB/T 12786: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 12786-2021	519	Add to Cart	5 days	General technical conditions for automatic internal combustion engine power stations	Valid
GB/T 12786-2006	719	Add to Cart	3 days	General specification for automatic electric power plant with internal combustion engines	Obsolete
GB/T 12786-1991	439	Add to Cart	4 days	Automatic diesel generating sets for general specification	Obsolete

Similar standards

GB/T 2820.7 GB/T 2820.9 GB/T 2317.4 GB/T 30370 GB/T 37089

Basic data

Standard ID: GB/T 12786-2021 (GB/T12786-2021)
Description (Translated English): General technical conditions for automatic internal combustion engine power stations
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: K52
Word Count Estimation: 28,215
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 12786-2021: General technical conditions for automatic internal combustion engine power stations

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(General technical requirements for automatic internal combustion engine power plants) ICS 29.160.40 K52 National Standards of People's Republic of China Replace GB/T 12786-2006, GB/T 4712-2008 General technical requirements for automatic internal combustion engine power plants Released on 2021-04-30 2021-11-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Foreword Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Classification and Grading 2 4.1 Classification 2 4.2 Grade 3 5 Technical requirements 3 5.1 General 3 5.2 Environmental conditions 4 5.3 Types of output power rating and operation mode 5 5.4 Items to be considered during design 5 5.5 Appearance 6 5.6 Structure 6 5.7 Indication, control and protection devices 6 5.8 Startup requirements and load 7 5.9 Automation requirements 7 5.10 Performance Index 9 5.11 Security 13 5.12 Fuel consumption rate and oil consumption rate 14 5.13 Reliability and maintainability 15 5.14 Limit indicators for environmental pollution 15 5.15 Driving, transportation and braking 17 6 Quality Assurance Regulations 17 6.1 Inspection classification 17 6.2 Inspection conditions 18 6.3 Appraisal (finalization) inspection 18 6.4 Quality consistency inspection 19 6.5 Inspection items 19 7 Complete set 22 7.1 Random files 22 7.2 Random tools and spare parts 22 8 Marking, packaging, storage and transportation 22 8.1 Signage of the power station 22 8.2 Contents of power station signs 22 8.3 Power station and its spare accessories 23 8.4 Packing of power station 23 8.5 Transportation of the power station 23 8.6 Storage of the power station 23 9 The manufacturer's guarantee 23 Appendix A (informative appendix) Reference limits for power station noise in operating environment 24 General technical requirements for automatic internal combustion engine power plants

1 Scope

This standard specifies the classification and grading, technical requirements, quality assurance regulations, completeness, and completeness of automated internal combustion engine power stations (hereinafter referred to as power stations). Marking, packaging, storage and transportation, manufacturer's guarantee, etc. This standard applies to land-use AC power frequency internal combustion engine power stations with a power range not exceeding 5000kW. DC power station, 60Hz power station can participate Use as per.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document. GB/T 755-2019 Rotating electric machine rating and performance GB/T 2423.16-2008 Environmental testing of electric and electronic products Part 2.Test method Test J and guideline. Mould GB/T 2820.1-2009 AC generator set driven by reciprocating internal combustion engine Part 1.Purpose, rating and performance GB/T 2820.2-2009 AC generator set driven by reciprocating internal combustion engine Part 2.Engine GB/T 2820.3-2009 AC generator set driven by reciprocating internal combustion engine Part 3.AC generator for generator set GB/T 2820.4-2009 AC generator set driven by reciprocating internal combustion engine Part 4.Control device and switchgear GB/T 2820.5-2009 AC generator set driven by reciprocating internal combustion engine Part 5.Generator set GB/T 2820.6-2009 AC generator set driven by reciprocating internal combustion engine Part 6.Test method GB/T 2820.7 AC generator set driven by reciprocating internal combustion engine Part 7.Technical description for technical conditions and design GB/T 2820.8-2002 AC generator sets driven by reciprocating internal combustion engines Part 8.Requirements for low-power generator sets And test GB/T 2820.9-2002 AC generator set driven by reciprocating internal combustion engine Part 9.Measurement and evaluation of mechanical vibration GB/T 2820.12-2002 AC generator set driven by reciprocating internal combustion engine Part 12.Emergency power supply for safety devices GB/T 4026-2019 Basic and safety rules for the identification of human-machine interface signs. Equipment terminals, conductor terminals and conductor identification GB/T 6072.1 Performance of reciprocating internal combustion engines Part 1.Calibration and test methods for power, fuel consumption and oil consumption Additional requirements for general engines GB/T 13306 signs GB/T 20136-2006 General test method for internal combustion engine power station GB 20891-2014 Non-road mobile machinery diesel engine exhaust pollutant emission limits and measurement methods (China's third and fourth stages) GB/T 21428-2008 Safety of generator set driven by reciprocating internal combustion engine GB/T 37089-2018 AC generator set controller driven by reciprocating internal combustion engine JB/T 8194 Terminology of internal combustion engine power station

3 Terms and definitions

GB/T 2820.1-2009, GB/T 2820.2-2009, GB/T 2820.3-2009, GB/T 2820.4-2009, GB/T 2820.5- Defined in.2009, GB/T 2820.6-2009, GB/T 2820.12-2002, GB/T 37089-2018, GB/T 6072.1, JB/T 8194 And the following terms and definitions apply to this document. 3.1 Stand-alone automation On a single power station, it can automatically realize the functions of unit startup, power supply loading and power failure, and shutdown, and can display the main performance of the unit Parameters and operating status. 3.2 Linkageautomation Linked with the mains or other power stations, and automatically realizes the start, power supply, and shutdown of the unit by detecting whether the mains or other power stations are faulty Features. 3.3 Paraleling automation When two or more power stations are in parallel, the unit's functions of starting, paralleling, de-training and shutting down are automatically realized. 3.4 Paralelinggridautomation When it is connected to the mains grid, it automatically realizes the functions of starting, connecting to the grid, off-grid and stopping the unit. 3.5 Localautomation On the power station side, it can automatically realize the functions of unit startup, power supply with load, power failure, and shutdown, and can display the main performance parameters of the unit And running status. 3.6 Remote automation The automatic start and stop functions of the unit can be realized remotely, and the main performance parameters and operating status of the unit can be displayed.

4 Classification and classification

4.1 Classification 4.1.1 According to the automation mode, power stations can be divided into. stand-alone automation, linkage automation, parallel automation, and grid-connected automation. 4.1.2 According to the control mode, the power station can be divided into. local automation and remote automation. 4.1.3 According to the switching time, the power station can be classified according to the requirements of GB/T 2820.12-2002, see Table 1, the typical types specified in Table 1. See Table 2 for examples. Table 1 Power stations used in special environments (such as chemical pollution, radiation, flammable gas, etc.) should be specified. In order to ensure the function and performance of the power station, the user should put forward relevant requirements and parameters to the power station manufacturer in the product specification, and its specific terms It should meet the requirements of GB/T 2820.7. 5.5 Appearance The appearance of the power station should meet the following requirements. a) The welding should be firm, and the welding seam should be uniform, free of defects such as cracks, weld penetration, undercut, missing welding and pores; no residues such as welding slag and welding flux; b) The outer surface of the car body (outer cover) should be flat; c) The surface of the control panel of the power station should be flat, reasonably wired, safe, well-contacted, well-defined, neat and beautiful, and the color of the wire should conform to The provisions of GB/T 4026-2019. d) The paint film of the painted part should be uniform without cracks, shedding, flow marks, bubbles, scratches, etc.; e) The color of the outer surface of the box body (outer cover) should meet the requirements of the product specification; f) The coating of the electroplated parts should be smooth, and there should be no leakage of plating spots, rust, etc.; g) Fasteners should have anti-loose measures and no looseness; h) The electrical wiring is reasonable, safe and tidy; i) Fire-fighting facilities, appliances, spare tools and spare accessories should be fixed and installed firmly. 5.6 Structure 5.6.1 Dimensions The external dimensions of the power station should comply with the product specifications. 5.6.2 Quality The quality of the power station should meet the requirements of the product specifications. 5.6.3 Mechanical structure and installation The mechanical structure and installation of the power station should comply with the product specifications. 5.6.4 Electrical structure and wiring The electrical installation and wiring of the power station shall comply with the regulations of the corresponding drawings and circuit diagrams. 5.6.5 Interchangeability The components of the power station should maximize the use of standard parts and general electrical components; the removable parts and electrical components of the same model of power station, The device should be interchangeable. 5.7 Indication, control and protection devices 5.7.1 Indicating device The monitoring instrument carried by the power station engine is in accordance with the provisions of GB/T 2820.2-2009 and the corresponding product standard; the accuracy of the pointer instrument, etc. The level should not be lower than 2.5, and the accuracy level of the digital display instrument should be in accordance with the product specification, and should meet the following requirements. a) Indication devices such as sound and light should work normally; b) The pointer rotation of the monitoring instrument should be flexible and accurate; c) The colors and markings of buttons, switches and indicators should be clearly defined in the product specifications and instructions for use according to their use. 5.7.2 Control device The control device and switchgear for power station shall be installed in accordance with the corresponding regulations of GB/T 2820.4-2009, and shall meet the requirements of product specifications. 5.7.3 Protection device 5.7.3.1 Electrical protection The power station has the following electrical protection devices. a) The power station should have short-circuit protection devices. When a short circuit occurs at the output end of the power station, the protection device should be able to act quickly and reliably, and the power station has no damage. Short circuits in power stations include single-phase, two-phase and three-phase short circuits. b) The power station should have an overload protection device. When the load current exceeds the overload current value specified in the product specification, the overload protection device should be Reliable operation within the specified time, and the power station should not be damaged. c) Power stations that need to be operated in parallel or connected to the grid should be equipped with reverse power protection devices. d) The power station with a rated voltage greater than 3000V should have a differential protection device. When the generator's internal fault occurs, it can quickly cut off the fault. To prevent the expansion of accidents, the circuit is blocked. e) Power stations with a rated voltage greater than 3000V should have generator rotor grounding protection devices. When the generator rotor is grounded at two points It should be able to issue an alarm with a short delay to protect the safety of the shafting of the power station and avoid magnetization in the power station. 5.7.3.2 Mechanical protection When faults such as low lubricating oil pressure, high coolant temperature, overspeed, etc. occur, but not limited to, the power station should be able to report according to the set value of the product specification. Alarm and/or shutdown. 5.7.3.3 Other protection The power station (when applicable) can be equipped with protection devices in accordance with the provisions of 7.3 and 7.4 of GB/T 2820.4-2009.Specific technical requirements and test The inspection method is in accordance with the product specification. 5.8 Startup requirements and loading 5.8.1 Start and load at room temperature The power station is under normal temperature (not lower than 5℃ for non-supercharged diesel power station, not lower than 10℃ for supercharged diesel power station, not lower than -10℃ for gasoline power station) No more than 3 starts should be successful. The start time interval is not more than 20s. It should be able to carry rated load within 3min after successful start run. 5.8.2 Low temperature start and load Power stations used at low temperatures should have low temperature start-up measures. When the ambient temperature is -40℃ (or -25℃), the power is not more than 250kW The power station should be able to start smoothly within 30 minutes. After the start-up, the power station should be able to work normally with the specified load within 3 minutes; for power greater than For a 250kW power station, the start-up time and load working time at low temperatures are in accordance with the product specifications. 5.9 Automation requirements 5.9.1 Automatically maintain the state of ready operation The oil pressure, oil temperature, and cooling water temperature during emergency startup and rapid loading of the power station shall comply with the product specifications. 5.9.2 Automatic start The automatic start of the power station meets the following requirements. a) After receiving the start command of automatic control or remote control, the power station should be able to start automatically; for category 3 and category 4 power stations connected in parallel with the power grid, When the grid voltage drops (in accordance with the provisions of Chapter 10 in GB/T 2820.12-2002) or the power supply is interrupted, the power station should be able to start automatically; When the failure time of the common power supply system is less than 0.5s, the engine should not be started, except for Type 1 and Type 2 power stations. b) When the automatic start of the power plant fails for the third time, a start failure signal should be issued. When a backup power station is provided, the program start system should be able to automatically start Pass the start command to the standby power station. c) The time from the automatic start command to the power supply to the load should be specified in the product specification as required. d) After the power station is automatically started, the first load is not less than 50% of the rated load if the rated power is not more than 250kW; For those with rated power greater than 250kW, follow the product specifications. e) After the power station is connected to the rated load, it should be able to operate automatically and reliably. f) The success rate of power station automatic start should not be less than 98%. 5.9.3 Automatic start of power supply and automatic shutdown After receiving a shutdown command from automatic control or remote control, the power station should be able to automatically shut down; for category 3 and category 4 power stations connected in parallel with the power grid, when the power grid is restored After normal, the power station should be able to automatically switch and automatically shut down, and the power grid will supply power to the load, and the shutdown method should be in accordance with 10.1 in GB/T 2820.12-2002 Regulations. 5.9.4 Automatic replenishment The automatic replenishment of the power station shall meet the following requirements. a) The automatic replenishment of fuel, engine oil, and cooling water should comply with the product specifications. b) Automatically charge the discharged battery to 80% of its rated capacity according to the time specified in Table 6. Table 6 Power station category 1 category 2 category 3 category 4 category Time AMC AMC < 10h < 6h Note. AMC is in accordance with the agreement between the manufacturer and the user. c) For internal combustion engines started with compressed air, in both the hot and cold conditions, the specifications and quantity of the gas cylinders should be such that the internal combustion engine The combustion engine runs at 5 times the ignition speed, and there is an automatic compressor system to inflate the gas cylinder and reach work within 45 minutes pressure. 5.9.5 Automatic paralleling and de-paralling The automatic paralleling and unloading of power stations should meet the following requirements. a) After connecting the parallel and de-paralling instructions of automatic control or remote control, two power stations of the same model should be able to automatically parallel and de-parallize. Usually, when the first When the power of a power station continues to meet the product specifications during the stand-alone operation of a power station, the automatic control system should issue a start command to the second power station. Make it automatically put into parallel operation; when the total output power of two parallel power stations continues to decrease to no more than 40% of the total rated power At the time, the automatic control system should issue instructions for de-staging and shutdown to one of the two parallel power stations. For the case of continuing to reduce the power, follow the instructions Product specification requirements. b) When two power stations are running in parallel, they should be able to automatically distribute the output active power and reactive power, and their values should meet the requirements of Table 5. c) The automatic control or remote control device should have the ability to control the third power station. When one of the two power stations operating in parallel In the event of a fault, the third power station should be started and automatically put into parallel operation before disassembling the faulty power station; when the two power stations have been operated in parallel When a secondary fault occurs in one of the power stations, the faulty power station should automatically decommission and shut down, and automatically cut off a part of the load (usually Secondary load), so that the power station that continues to operate does not appear to be overloaded. At the same time start the third power station and make it automatically Connected operation to restore normal power supply. Note 1.Level 1 fault refers to a fault that is allowed to operate for a period of time (the time required for the standby power station to be put into operation) after the power station fails. Note 2.The secondary fault refers to the fault that needs to be shut down immediately after the power station fails. 5.9.6 Unattended time The unattended time of the power station shall be specified in the product specification. 5.9.7 Automatic protection The power station shall have the p......

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Question 1: How long will the true-PDF of GB/T 12786-2021_English be delivered?

Answer: Upon your order, we will start to translate GB/T 12786-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 12786-2021_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 12786-2021_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 12786-2021?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 12786-2021 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.