Difference between ground-mounted luminaires and entry-type lamps

1.1 ground embedded lamps

The power connections and electrical components are below the ground and are suitable for installation in the ground.

Floor-mounted luminaires are shown in Figure 1.

The structural diagram of the floor-mounted luminaire is shown in 2.

1.2 recessed lighting

The manufacturer intends to fully or partially embed the luminaires on the mounting surface.

The recessed luminaire is shown in 3.

3 recessed luminaire type top cover transparent parts luminaire embedded parts upper cover embedded parts applicable range

2.1 ground embedded lamps

The standard stipulates the use of floor-mounted luminaires with a power supply voltage not exceeding 1 000 V. It is suitable for indoor or outdoor use, such as gardens, yards, driveways, parking lots, bicycle lanes, sidewalks, pedestrian walking areas, swimming pool safety extra low voltage. Areas outside the area, nurseries and similar places.

Uncovered covered ground-mounted luminaires installed on motorway and on airport runways as defined by IEC 61827, "Airport Electrical Equipment and Beacons - Airport-Used Embedded and Raised Luminaires". The floor-mounted luminaires on the airport runway are shown in Figure 4.

2.2 recessed lighting

The standard specifies the use of recessed luminaires with a power supply voltage not exceeding 1 000 V as the light source.

Not applicable to air-conditioning lamps or liquid-cooled lamps, such as air-conditioning lamps.

3.1 ground embedded lamps

Apply Chapter 3 and below 1~3 of GB7000.1.

1 The manufacturer's instructions should indicate the rated load in N.

2 units are rated maximum surface temperature °C, the marking shall be given on the luminaire according to column 2 (b) of GB7000.1.1, and (or) given in the manufacturer's manual and catalogue.

3 If necessary, give information about the external junction box in the manufacturer's instructions.

3.2 Embedded luminaire application Chapter 3 of GB7000.1 and F-marking and symbols of insulated ceiling.

The symbol indicates that the recessed luminaire is suitable for installation on a common flammable surface and where the insulating material may cover the luminaire.

Embedded luminaires that are not marked with a symbol should be warned on the label or in the instructions provided by the manufacturer that the luminaire must not be covered by a thermal pad or similar material under any circumstances.

Structure 4.1 Floor-mounted luminaires 4.1.1 Static-resistance luminaires shall be capable of withstanding the minimum static load given in the manufacturer's instructions.

Install the samples as normal for use according to the manufacturer's instructions.

The standard specified deviation of the test load within 3% is applied to the top surface of the luminaire by a cylindrical rubber hammer.

The rubber hammer should meet the following requirements: when the diameter of the lamp is ≥ 50mm, the diameter of the rubber hammer is 50mm; when the diameter of the lamp is less than 50mm, the diameter of the rubber hammer is the diameter of the lamp (); Shore A hardness = 65 ±5; thickness ≥ 50 mm ().

During the test, the ram should be vertical and coincide with the geometric center of the translucent cover ().

Subsequently, the rubber hammer should apply the load evenly at a rate of no more than 5,000 N/min. The maximum load should be applied for 1 min.

Base size static load test device for rubber hammer 4.1.2 Anti-torque and shear load The lamps used in areas such as roads and parking lots where motor vehicles may travel should be able to withstand the forces generated by turning, braking and accelerating the tire.

4.1.2.1 Torque test Luminaire components that may be subjected to rotational forces shall have sufficient mechanical strength. The connections of these components shall withstand a 50N shear force of 1 min (see). Each connector should be tested separately.

Legend for bending moment test 4.1.2.2 Shear load test Luminaire components of ground-mounted luminaires that may be subjected to rotational forces shall be subjected to shear load tests.

A 5kN pulling force should be applied to the same part. This force is applied to the end of the pole along the direction of the centerline of the lane where the luminaire is installed (if any). The force is applied for not less than 5s, but not more than 10s. The number of times of exertion is 20 times (as shown).

Shear load test legend 4.1.2.3 Thermal shock resistant glass cover should be able to withstand thermal shock.

Before the test, the lamps and glass covers shall be pretreated for the durability test specified in Chapter 12 of GB7000.213.

Place the luminaire so that the hood is as horizontal as possible and face up. The luminaire should work until the glass cover reaches the maximum temperature during the thermal test, then turn off the light and disconnect the power supply. Immediately after disconnecting the power supply, pour 1 L of ice water (not exceeding 5 ° C) onto the glass cover at a height of about 1 m. The water should not exceed 5 s.

4.1.2.4 All accessible edges of the edge shall have smooth rounded corners with a minimum radius of 1.5 mm or equivalent chamfer.

The surface of the top assembly should be smooth and should not have burrs and burrs.

4.1.2.5 Mechanical strength When applying Article 4.13 of GB7000.1, the ground-mounted luminaire uses a new impact energy of 5 Nm. The impact energy generated by the free fall of the steel ball impacts the weakest part of the luminaire three times.

Ground-mounted luminaires require multiple samples for all tests, and some tests may be destructive. If the luminaire is damaged in the previous test, a new sample should be used in subsequent tests.

Floor-mounted luminaires may cause violent scattering of the glass during the thermal shock test, and the test operator and the test environment should be properly protected. For example, wearing protective clothing and a mask, use a kettle with a long handle to pour water from a distance, and erect a vertical protective screen around the luminaire to protect the environment and test personnel.

4.2 Embedded luminaires apply the requirements of Chapter 4 of GB7000.1, but for the embedded part of the luminaire, the impact energy and spring compression required by the test specified in 4.13 of GB7000.1 shall comply with the provisions of GB7000.202.

GB7000.202 Impact energy and spring compression The impact energy of the test component / Nm compression / mm Provides protection against electric shock (except ceramic components) Ceramic components and all other components on the luminaire 0.35 0.20 17 15 for embedded luminaires The impact energy is still in accordance with the provisions of GB7000.1.3, but the impact energy of the embedded part of the lamp is modified on the basis of GB7000.1.3. For the parts made of ceramic anti-electric shock protection, it is considered that the embedded part is not susceptible to mechanical shock. This feature, the impact energy is reduced from 0.35 Nm of GB7000.1.3 to 0.20 Nm. When applying GB7000.1.3, please pay attention to first understand the function of the tested parts is to prevent electric shock or dust, solid foreign body and waterproof, and then To see if it is fragile, the fragile parts in GB7000.1.3 refer to only dustproof, solid foreign objects and waterproof parts such as glass, translucent cover and ceramic. For example: the ceramic lamp holder of the test object, its function is to protect against electric shock, it is a broken component. It applies 0.35 Nm impact energy when checking GB7000.1.3, and applies 0.20Nm when checking GB7000.202 standard. It does not protect against electric shock. The translucent cover and the bulb, which are not dustproof, solid foreign objects and waterproof parts, do not have to be subjected to an impact test.

External and internal wiring 5.1 Ground-mounted luminaires For outdoor use luminaires, when the cable connected to the power supply is supplied by the luminaire manufacturer, its mechanical and electrical properties should be at least equal to the following models: ―245 IEC 57 or 245 IEC 66: Rated voltage Round conductor rubber insulated flexible cable up to 750 V.

― 450/750 V other rubber sheathed cables according to regional wiring rules (eg H07RN8-F, etc.).

5.2 The standard for embedded luminaires shall be specified by the luminaire manufacturer for the connection of the flexible cable or cord to the power supply. The mechanical and electrical properties shall be at least equivalent to the provisions of GB 52023 1), GB52023A 2) or GB52013 1), and It should withstand the highest ambient temperature effects that may be experienced under normal conditions of use without damage. Materials other than PVC and rubber that meet the above requirements may also be used, but the special requirements of Part 2 of the above standard are not applicable at this time. The use of flexible cables and cords on recessed luminaires is appropriate in the following cases: ● The flexible cable or cord is not accessible in the recessed area; ● The luminaire is easy to fit into the recess Inside the slot; ● Adjustable recessed luminaires are easy to adjust.

Anti-shock protection 6.1 Ground-mounted luminaire application GB7000.1 Chapter 8 "Anti-shock protection" section.

6.2 The luminaire components and components of the recessed ceiling space or cavity shall provide the same level of protection against electric shock as the luminaire components under the ceiling space. The ceiling space or cavity is considered accessible during installation and maintenance, while the baffle does not provide substantial protection against electric shock.

Thermal test 7.1 Ground-embedded luminaires Floor-embedded luminaires shall be in accordance with the provisions of Chapter 13 of GB7000.213, before the test of 9.2 in GB7000.1 and before the test of 9.3, 12.4, 12.5 of Chapter 12 of GB7000.1, Related tests for 12.6 and 12.7.

When conducting tests in 12.3, 12.4, 12.5, 12.6 and 12.7 of GB7000.1, the lamps shall be installed in the normal working position and placed in a test recess according to the provisions of GB7000.1. For all places, the test grooves shall be in accordance with GB7000. .1 Appendix D, or when applicable, according to the manufacturer's instructions.

When the floor-mounted lamp is subjected to normal thermal test and abnormal heat test, if the light-emitting surface is covered with a metal rib frame or grid, but the standard test finger can touch the translucent cover, the temperature should be made at the accessible translucent cover. Measurement; if the translucent cover is not accessible with the standard test finger, the temperature measurement should be performed on the outer metal cover. The measured translucent cover and the temperature of the accessible parts should not exceed the value of the mark.

GB7000.213-2008 "Lamps - Part 2-13: Special requirements for ground-mounted luminaires" has an appendix A "Guidelines for good installation"

This guide is intended to advise lighting system designers on the application of specific luminaires, particularly with regard to temperature limits, dimensions and static load resistance, as shown.

2 Specific luminaire application and temperature limits, dimensions and anti-static pressure expected operating temperature 1) / ° C height 2) / mm static load 3) / kN in the generally inaccessible area (according to the wiring rules) X in the limit of access Areas (eg, only walking and bicycle areas) 100 0 4) 5 in all other accessible areas (eg lanes, parking lots, etc.) 65 75 20 as described above, also including snow sweeping and/or de-icing areas 65 or 80 5 ) 0 4) 20 special areas (areas where the working temperature will cause injury, such as kindergartens, swimming pools, etc.) 40 0 ​​4) 5 Note: Special care should be taken when considering the compatibility between special environment and luminaire structure, for example, except Ice area, salt environment, etc.

1) The highest value, see 3.2 and 12. in GB7000.213-2008.

2) Maximum value, see GB7000.213-2008. From 075 mm, the top of the protruding ground should have a apex angle of max = 35 °C at 3 mm and the apex (appropriate chamfer).

3) Minimum value, see 6.1 in GB7000.213-2008.

4) No more than 5 mm in these areas, no more than 25 mm when installed in non-walking areas, such as near walls, buildings, etc.

5) 65 ° C for unprotected metal and 80 ° C for glass. Depending on the type of installation (in particular, risk assessment).

7.2 Embedded luminaires entering the luminaire or wiring that may touch the luminaire connected to the power supply shall not reach unsafe temperatures.

When connecting the luminaire to the power supply, use the cable supplied with the luminaire or use the cable according to the marking on the luminaire. If there is no marking, use the cable specified in the manufacturer's instructions. Otherwise, use PVC cable in accordance with GB 5023.

Look for the hottest spot that the cable may touch during normal operation, along the internal wiring or exterior surface of the luminaire. The cable is slightly fixed at the contact point, and the temperature of the contact point insulation material is measured according to the method described in Appendix M of GB7000.1.

The operating temperature of the cable does not exceed the limit temperature given in (GB7000.202), see illustration.

Lamps with IP classification greater than IP20 shall be tested in accordance with the provisions of Chapter 13 of GB7000.202, after 9.2 of GB7000.1, before 9.3, before 12.4, 12.5 and 12.6 of GB7000.1.

(GB7000.202) Cable working temperature The name of the cable is the maximum working temperature. The flexible cable (including the casing) provided by the luminaire does not provide the flexible cable provided with the luminaire. a) The luminaire marked with the cable temperature b) The cable temperature is not marked. The temperature of the highest temperature mark specified in GB7000.12.2 is the highest temperature specified in GB7000.12.2 for ordinary PVC flexible cable not subjected to mechanical stress. Dust-proof, solid-proof foreign matter and waterproof 8.1 Ground-mounted luminaire application GB7000.1 Chapter 9 The test procedure shall be carried out in accordance with the provisions of Chapter 12 of GB7000.213.

The luminaires meet at least IP65 and IP67 requirements.

The test shall be exposed to air or installed in accordance with the manufacturer's instructions.

For IPX5, the luminaire shall be placed on the water spray test device together with the installation accessories (eg container outside) or in accordance with the instructions provided by the manufacturer in accordance with Clause 9.2.6 of GB7000.1.

For IPX7, it should be installed and operated according to normal use until the glass cover reaches the highest temperature measured during the thermal test. Then, the power should be cut off according to the provisions of 9.2.8 of GB7000.1 and the lamp should be immersed in water immediately. If the manufacturer gives a clear indication that the luminaire is to be used with the drain, this test is not required and the luminaire only needs to comply with IP65.

For IP6X, the luminaire, together with the mounting accessories and cables, should be placed in the dust test chamber in accordance with 9.200 of GB7000.1.

IPX8 is not suitable for floor-mounted luminaires.

8.2 recessed luminaire

Apply the provisions of Chapter 9 of GB7000.1. For lamps with an IP rating greater than IP20, the order of the tests specified in Chapter 9 of GB7000.1 shall be in accordance with the provisions of Chapter 12 of GB7000.202.

in conclusion

The ground-mounted luminaire is a kind of luminaire that has similar functions but different functions to the embedded lamp. Its unique use environment requires that it be used in a lower range than the embedded luminaire, but it must be embedded in the luminaire structure. The luminaires, which distinguish the difference between the two, are the basis for the correct manufacture, use and inspection of the luminaire manufacturer and user as well as the luminaire's inspectors.

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