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MHT6012-2015 English PDF

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MHT6012-2015: (Aviation obstruction lights)
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Standard similar to MHT6012-2015

GB/T 7000.201   GB/T 37637   GB 7000.1   MH/T 6013   

Basic data

Standard ID MH/T 6012-2015 (MH/T6012-2015)
Description (Translated English) (Aviation obstruction lights)
Sector / Industry Civil Aviation Industry Standard (Recommended)
Classification of Chinese Standard K73
Classification of International Standard 29.140.40
Word Count Estimation 21,241
Date of Issue 2015-12-22
Date of Implementation 2016-01-01
Older Standard (superseded by this standard) MH/T 6012-1999
Regulation (derived from) Civil Aviation Industry Standards Bulletin 2015 No.6; Industry Standard Filing Announcement 2016 No.1 (Total No.193)
Issuing agency(ies) Civil Aviation Administration of China

MHT6012-2015: (Aviation obstruction lights)

---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.
Aeronautical obstacle light ICS 29.140.40 K 73 MH Civil Aviation Industry Standard of the People's Republic of China Replace MH/T 6012-1999 Aviation obstruction lights 2015-12-22 released 2016-01-01 implementation Issued by Civil Aviation Administration of China

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces MH/T 6012-1999 "Aviation Obstruction Lights". Compared with MH/T 6012-1999, the main technical changes are as follows. -Modified the scope of application of obstruction lights (see Chapter 1, Chapter 1 of the.1999 edition); -Revised the normative references (see Chapter 2, Chapter 2 of the.1999 edition); -Added "Terms and Definitions" (see Chapter 3); -Modified the classification of obstruction lights (see Chapter 4, Chapter 3 of the.1999 edition); --- Added the technical requirements for Type A, Type C, Type D low intensity and Type C medium intensity obstruction lights (see Chapter 4, 5.3.1.2); --- Increase the requirements for creepage distance and electrical clearance (see 5.2.1); --- Added requirements for protection against electric shock (see 5.2.2); --- Added detailed requirements for light color (see 5.2.5); --- Increase the installation and adjustment requirements of Type A and Type B high intensity obstruction lights (see 5.2.6); --Modified the power supply voltage working range of AC power supply obstruction lights (see 5.2.8,.1999 edition 4.2.5); --- Added relevant requirements for radiated and conducted emissions (see 5.2.10); --Relevant requirements for the life of the light source are modified (see 5.2.15,.1999 edition 4.3.3); -Modified the position of the vertical center of the beam of the A-type and B-type low-intensity obstruction lights (see 5.3.1.2,.1999 edition 4.2.10.1); -Modified the beam distribution requirements of medium intensity and high intensity obstruction lights (see 5.3.1.2,.1999 edition 4.2.10); -Modified the flash duration of Type A and Type B medium intensity and high intensity obstacle lights (see 5.3.2, 4.2.10 of the.1999 edition); -Added the chromaticity coordinates of the surface chromaticity (see 5.3.5); -Modified some inspection and test methods (see Chapter 6, Chapter 5 of the.1999 edition); -Modified inspection rules (see Chapter 7, Chapter 6 of the.1999 edition); -Modified the nameplate, manual, packaging, transportation and storage requirements (see Chapter 8, Chapter 7 and Chapter 8 of the.1999 edition). This standard was proposed and interpreted by the Airport Department of the Civil Aviation Administration of China. This standard was approved by the Aircraft Airworthiness Certification Department of the Civil Aviation Administration of China. This standard is under the jurisdiction of the China Academy of Civil Aviation Science and Technology. Drafting organizations of this standard. China Academy of Civil Aviation Science and Technology, National Optoelectronic Information Product Quality Supervision and Inspection Center, Shanghai Nanhua Machinery Electric Co., Ltd. The main drafters of this standard. Liu Yuhong, Li Jing, Chen Jianqiang, Xu Xun, Le Ningning, Wang Huai, Tricor. Aviation obstruction lights

1 Scope

This standard specifies the classification, technical requirements, test and inspection methods, inspection rules, nameplates, aviation obstruction lights (hereinafter referred to as obstruction lights) Packaging, transportation, storage and other requirements. This standard applies to obstruction lights installed on obstacles such as fixed buildings, structures, and moving objects in airports.

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 references, the latest version (including all amendments) applies to this document. GB/T 191 Packaging, Storage and Transportation Graphic Mark GB/T 2423.1 Environmental testing of electrical and electronic products Part 1.Test method Test A. Low temperature GB/T 2423.2 Environmental testing of electrical and electronic products Part 2.Test method Test B. High temperature GB/T 2423.3 Environmental testing of electrical and electronic products Part 3.Test method Test B. Damp heat GB/T 2423.17 Environmental testing of electric and electronic products Part 17.Test method Test Ka. Salt spray GB/T 2423.24 Environmental Test Part 24.Test Method Test Sa. Simulate solar radiation on the ground and its test guide GB 4208 Shell protection grade (IP code) GB 7000.1 General safety requirements and experiments for lamps GB/T 7256-2015 General requirements for civil airport lamps GB 9254 Information Technology Equipment Radio Disturbance Limits and Measurement Methods GB/T 9969 General Rules for the Use of Industrial Products GB/T 14436 General Rules of Guarantee Documents for Industrial Products GB/T 17626.5 Electromagnetic compatibility test and measurement technology surge (impact) immunity test MH 5001 Civil Airport Flight Area Technical Standard

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Beam spread On the specified plane, the light intensity is equal to the angle between the two directions at 50% of the specified minimum peak light intensity on the plane. 3.2 Vertical aiming angle The angle between the exit direction of the maximum light intensity and the horizontal plane. 3.3 Steady-burning(fixed) light A lamp with constant intensity when viewed at a fixed point. 3.4 Effective intensity The effective light intensity of the flash lamp is equivalent to the light intensity of a constant light-emitting lamp of the same color that produces the same visual range under the same observation conditions.

4 categories

The classification of obstruction lights is shown in Table 1.

5 Technical requirements

5.1 Environmental requirements Obstruction lights should be able to operate for a long time in the following environments. a) Working temperature. -40 ℃～55 ℃; b) Relative humidity. 0% to 95%; c) Wind force. not more than 240 km/h; d) Rain. Exposure to rain in any wind direction; e) Salt spray. exposure to salt spray environment; f) Irradiation. Exposure to solar radiation. 5.2 Design requirements 5.2.1 Creepage distance and electrical clearance The creepage distance and electrical clearance of the obstruction light should meet the relevant requirements of GB 7000.1. 5.2.2 Protection against electric shock The electric shock protection of obstruction lights shall meet the relevant requirements of GB 7000.1. 5.2.3 Structure The structure of the obstruction light should be sturdy and light as possible, and it should be able to operate for a long time under the specified environmental requirements, and be easy to install and replace the light source. All external detachable parts of the luminaire should have anti-falling measures, such as wiring cover, lampshade that needs to be replaced on site, and external screws. The protection level of lamps and enclosures containing electronic circuit boxes should not be lower than IP55. 5.2.4 Lampshade The color of the lampshade should be uniform. The glass lampshade shall be subjected to the thermal shock test in accordance with the requirements of 10.2.3 of GB/T 7256-2015.After the test, the lamp shall be No cracks or cracks. If the lampshade is a plastic cover, it should be resistant to cracks and cracks. Color changes and materials caused by exposure to ultraviolet rays or ozone Aging should not affect its performance requirements. 5.2.5 Light color 5.2.5.1 Light chromaticity of gas discharge type and electric heating type light source 5.2.5.2 Solid state light source light chromaticity The chromaticity of solid-state light source obstruction lights, such as light-emitting diodes, must be within the following limits. --red 5.2.6 Installation and adjustment requirements for type A and type B high intensity obstruction lights When installing Type A and Type B high-intensity obstacle lights, the vertical aiming angle should be adjusted so that the angle is between 0° and 8°. Each luminaire should have A spirit level or other equipment is used to set the vertical aiming angle of the beam with an accuracy of 1°. 5.2.7 Control equipment 5.2.7.1 Control equipment for white flashing obstruction light system 5.2.7.1.1 General requirements The control equipment should be able to set the flash frequency, flash sequence and light intensity of the system, and realize the control when the distance from the lamp is not more than 762 m Effective control of lamps. When the control equipment or control circuit fails, the lamp should continue to flash at the specified frequency. In the control device When the control light intensity level circuit fails, all lamps should be maintained at their usual light intensity level or run at the highest light intensity level. 5.2.7.1.2 Monitoring The control equipment should be able to monitor the operating status of each lamp, including but not limited to normal or fault conditions. The lamp flashes more than 4 times continuously or Running at the wrong light intensity level during the day is a malfunction. The running status of the monitoring should be indicated in the form of signal as normal and no signal as fault. The equipment should be equipped with appropriate circuits and interfaces for transmitting the normal or fault status information of the system and individual lamps to the remote control device (by Users can choose or prepare by themselves). 5.2.7.1.3 Installation The control and monitoring function of the control equipment can be realized by the circuit set in one or scattered in several lamps according to the situation, or by one Remote control device to achieve. 5.2.7.1.4 Remote control device The remote control device should be able to display the operating status of each lamp, and should be equipped with flash frequency and sequence, light intensity level setting device and automatic/ Manual control switch for manual control when maintenance or photoelectric control fails. 5.2.7.2 Red obstruction light control equipment 5.2.7.2.1 General requirements All red flashing obstruction lights and the non-flashing red obstruction lights in the same system shall be equipped with a control device, and the distance between the lamps shall not be greater than Under the condition of 762 m, effective control of the lamps can be realized. The control equipment should be able to set the flash frequency of the system and make all The light source is always on. The control equipment should be equipped with flash frequency, flash sequence, light intensity level setting device and automatic/manual control switch to facilitate maintenance Manual control is implemented when the protection or photoelectric control fails. Internal and external lighting systems, including the red flashing of the relevant system The light obstruction light should be connected to the control equipment. 5.2.7.2.2 Monitoring The control equipment should be able to monitor the operating status of each lamp, including but not limited to normal or fault conditions. The lamp flashes more than 4 times continuously or It is a malfunction during daytime operation. The running status of the monitoring should be indicated in the form of signal as normal and no signal as fault. Equipment should be equipped with appropriate The circuit and interface are used to transmit the operating status information of the system and lamps to the remote alarm device (optional or self-prepared by the user). 5.2.7.3 Control equipment for double obstruction light system 5.2.7.3.1 General requirements The control equipment should be able to set the working mode of each lamp in the system, and realize the control of the lamp when the distance from the lamp is no more than 762 m. Effective control. One or two light sources in the B-type medium intensity obstruction light on the top floor fail or any red flashing obstruction light on the top layer fails Under the circumstances, the control equipment should have the function of putting the white obstruction light into operation at the specified night light intensity level. Control equipment should have The function that the color obstruction light system and the white obstruction light system cannot operate at the same time. The control equipment should be equipped with flash frequency, flash sequence, light intensity level Set up devices and automatic/manual control switches to implement manual control when maintenance or photoelectric control fails. 5.2.7.3.2 Monitoring The control equipment shall monitor each single B-type medium-intensity obstruction light and the B-type low-intensity obstruction light on each floor for normal or malfunction status monitoring. The following conditions are all fault conditions. a) Any one of the light sources in the B-type medium intensity obstruction light fails; b) Any light source in the B-type low-intensity obstruction light on the first floor fails; c) The flasher of an obstruction light fails (constantly on or completely broken). The operating status of the monitor should be indicated by a signal as normal and no signal as a fault. Appropriate circuits and interfaces should be provided on the equipment, Used to transmit the normal or fault status information of the system and a single lamp to the remote alarm device (optional or self-prepared by the user). 5.2.8 Power supply voltage The AC-powered obstruction lights should be able to operate normally within the range of 80% to 120% of the rated input power voltage. DC-powered obstruction lights should be able to Normal operation within the rated input power voltage range of 90%～110%. 5.2.9 Surge protection Obstruction lights and control devices should be able to withstand the following waveform surges, namely 3 kA, 8/20 μs short-circuit current pulse and 6 kV, 1.2/50 μs The open circuit voltage pulse is high, and it is equipped with protection devices that can withstand the above-mentioned surge. 5.2.10 Radiated and conducted emissions Obstruction lights should not exceed the conducted emission limit shown in Table 2.In the 3 m method test, the system should not exceed the radiation emission limit in Table 3. 5.2.12 Interlock switch Each power supply device should be equipped with an interlock switch, so that when the cabinet is opened, the input power is automatically cut off, and the energy storage voltage is discharged to within 30 s Below 50 V. Each flash head should be equipped with an interlock switch. 5.2.13 Low temperature protection device Obstruction light systems operating at ambient temperatures below -40 ℃ can be equipped with low-temperature protection devices to ensure their normal operation. 5.2.14 Installation spacing of lamps, power supplies and control equipment When the lamps, power supply and control equipment are set separately, the manufacturer shall specify the maximum allowable distance between the lamps and the power supply and control equipment. Distance and minimum distance, and incorporate these data into product specifications. 5.2.15 Light source life The rated life of the electrothermal light source under the rated voltage should not be less than 2 000 h, and the rated life of the LED light source under the rated voltage should not be less than For 50 000 h, the rated number of flashes of the gas discharge flash light source should not be less than 107. 5.2.16 Maintenance-free of lamps and control equipment All components of the obstruction light should be repaired within one year and meet various performance requirements. 5.2.17 Leakage current Various types of obstruction lights should be able to withstand AC 1000 V, 50HZ or DC 1 414 V test between each power input terminal and the lamp housing. The test voltage does not break down for 10 s, and the leakage current should not exceed 10 μA under indoor temperature and humidity conditions. 5.3 Performance requirements 5.3.1 Luminosity 5.3.1.1 General requirements Under the condition that the ambient temperature limit specified in 5.1 and the deviation of the power supply voltage are within the specified limit of 5.2.8, various flashing lights shall be able to The effective light intensity of the specified value of flash frequency is emitted within the beam spread angle. 5.3.1.2 Characteristics of obstruction lights The characteristics of obstruction lights should meet the requirements of Table 4. 5.3.1.3 Low intensity obstruction lights The characteristics of low-intensity obstruction lights should meet the requirements of Table 4 and Table 5.The horizontal beam spread angle of low-intensity obstruction lights is 360°. 5.3.1.4 Medium intensity obstruction lights The characteristics of medium intensity obstruction lights should meet the requirements of Table 4 and Table 6.The horizontal beam spread angle of medium intensity obstruction lights is 360°. 5.3.2 Flash frequency and duration 5.3.3 System flash requirements 5.3.3.1 Simultaneous flashing lights By any of B-type medium-intensity, A-type medium-intensity or A-type high-intensity obstruction lights, or A-type medium-intensity or A-type high-intensity obstruction lights The flash sequence difference of all lamps of the completed obstacle lighting system should not be more than 1/60 s. 5.3.3.2 Sequential flashing system The sequential flash should meet the following conditions. a) The obstruction light system of the sign catenary supporting structure composed of B-type high-intensity, A-type medium-intensity or B-type medium-intensity obstruction lights should Sequential flash b) The system should install three levels of obstruction lights on or near each supporting structure. one layer near the top, one layer at the bottom or catenary At the height of the lowest point, one layer is in between the two; c) The order of flashing should be middle layer, top layer, bottom layer; d) The interval time between flash lamps of each layer should meet the requirements of Table 8. 5.3.4 Changes in light intensity level 5.3.4.1 White obstruction light The intensity of the white obstruction light should be controlled by a photoelectric device facing the northern sky. The photoelectric device is adjusted in time according to the measured illuminance value The light intensity level of the obstruction light. 5.3.4.2 Red obstruction light If the red obstruction light is equipped with automatic control, the photoelectric device will adjust the obstruction light on and off according to the measured illuminance value. Single type B low light The control method of the strong obstruction light should be determined according to the specific installation conditions. 5.3.4.3 Double obstruction light system If the red obstruction light is equipped with automatic control, the photoelectric device will adjust the obstruction light on and off according to the measured illuminance value. The illuminance value adjusts the light intensity level of the obstruction light in a timely manner. 5.3.5 Surface chromaticity 6.1 Environmental test 6.1.1 Low temperature test The low temperature test should be carried out in accordance with the provisions of GB/T 2423.1.Put the lighting equipment in a low temperature box with a constant temperature of -40 ℃, turn on the light after 24 hours After running for 1 h, within 60 s after turning on the light, the obstruction light reaches the normal light intensity and flash frequency. After the test, take out the obstruction light from the low According to inspection, any material deterioration or damage is found to be unqualified. For flashing obstruction lights, measure the AC voltage when the power supply voltage deviates from the rated value The flash frequency is maintained at ±20% of the nominal value and the DC voltage is maintained at ±10% of the nominal value. If the flash frequency deviates from the provisions of Table 7 or The capacitor discharge type flashing obstruction lamp has a lower discharge energy from the capacitor to the tube than when it is operated at room temperature. 6.1.2 High temperature test The high temperature test should be carried out in accordance with the provisions of GB/T 2423.2.Put the lighting equipment in a constant temperature oven at 55 ℃ for at least 4 hours (temperature Degree to balance). Only turn on the lights for testing. After the test is completed, take out the obstruction light from the incubator for visual inspection. If any material is found Deterioration or damage are unqualified. For flashing obstruction lights, determine that when the power supply voltage deviates from the rated value, the AC voltage remains at ±20% of the nominal value, The flash frequency when the DC voltage is maintained at ±10% of the nominal value. If the flash frequency deviates from the regulations in Table 7, or the capacitor discharge type flashing obstruction light changes from The energy discharged from the capacitor to the lamp tube is lower than the discharge energy when operating at room temperature. 6.1.3 Damp heat test Conduct the damp heat test according to the damp heat test method for ground electronic equipment specified in GB/T 2423.3.Lamps and equipment go through 3 cycles (72 h) For the test, the maximum temperature should be 55 ℃. Any abnormal phenomenon or material deterioration or damage to the lighting equipment during the test operation is unqualified. 6.1.4 Wind pressure test Carry out the test in accordance with 6.5.4.2 of GB/T 7256-2015. 6.1.5 Rain test The protection level test is carried out in accordance with GB 4208.The samples should meet IP55 requirements. 6.1.6 Salt spray test Carry out the salt spray test according to GB/T 2423.17.The samples were subjected to 48 hours of salt spray and 48 hours of drying and then the lights were turned on. Obstacle lights should not show any Signs of damage, rust, pitting or corrosion (except for coating damage). 6.1.7 Solar radiation test (optional for places with special requirements) According to GB/T 2423.24, perform solar radiation test on the non-metallic external parts used on the equipment. The radiation intensity is (1 120±47) W/m2, 24 h is 1 cycle, of which 8 h is irradiated and 16 h is not irradiated, a total of 56 cycles are performed. During the irradiation, the temperature in the test chamber is maintained at 55 ℃±2 ℃. Chalking, fading, cracking, fogging or color change (yellowing) of the thermoplastic lens of any plastic parts Unqualified. 6.2 Routine inspection 6.2.1 Structural inspection Visually check whether the structure meets the requirements of 5.2.3. 6.2.2 Lampshade inspection In an environment with a temperature of 25 ℃ ± 3 ℃, light the lamp with rated current for at least 4 h (to stabilize the working temperature of the obstruction light), and then turn off Use water with a temperature not higher than 5℃ to pour the lampshade of the obstruction light, and repeat the test 3 times. After the 3 cycles are over, check whether the lampshade meets 5.2.4 Requirements. 6.2.3 Radiation and conducted emission test The test shall be carried out in accordance with the method specified in GB/T 9254 and shall meet the requirements of 5.2.10. 6.2.4 Warning sign inspection Visually check whether the warning signs meet the requirements of 5.2.11. 6.2.5 Surface color inspection Compare with a luminaire under natural light or D65 light source, visually check whether the chromaticity of the luminaire surface is significantly different from 5.3.5. 6.3 Electrical test 6.3.1 Creepage distance and clearance test MH The test is carried out in accordance with the relevant requirements of GB 7000.1 and shall meet the requirements of 5.2.1. 6.3.2 Test of protection against electric shock The test is carried out in accordance with the relevant requirements of GB 7000.1 and shall meet the requirements of 5.2.2. 6.3.3 Power supply voltage inspection Adjust the power supply voltage, the AC-powered lamps are within the range of 80%～120% of the rated input voltage, and the DC-powered lamps are within the rated input voltage. Within the range of 90% to 110% of the pressure, the requirements of 5.2.8 shall be met. 6.3.4 Surge protection test The test is carried out in accordance with the GB/T 17626.5 specification and should meet the requirements of 5.2.9. 6.3.5 Installation distance test of lamps, power supply and control equipment Visually check whether the installation distance between lamps, power supplies and control equipment meets the requirements of 5.2.14. 6.3.6 Leakage current test Leakage current is measured between the power input ...

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