Difference between tower chandelier and metal halide lamp

According to the different products, the differences between metal halide lamps and LED tower chandeliers are listed

1. Lighting safety requirements at the construction site of a construction site

1.1 The construction lighting supply voltage should meet the following requirements:

a) In general locations, the lighting voltage should be 220V.

b) The lighting voltage shall not be greater than 36V in tunnels, civil defense projects, high temperature, conductive dust and narrow places.

c) The lighting voltage shall not be greater than 24V for wet and accessible lighting circuit locations.

d) The lighting voltage shall not exceed 12V in a particularly wet, well-conducted ground, boiler or metal container.

e) The line lamp voltage should not exceed 36V.

1.2 The lighting circuit at the scene must use a soft rubber sheathed cable and be equipped with a leakage protector. The metal shell of the lamp should be grounded (zero) protected.

1.3 The phase line of the lamp shall be controlled by a switch. The phase line shall not be directly introduced.

1.4 The “one machine and one brake” system must be implemented. It is forbidden to use the same switch to directly control two or more electrical equipment (including sockets).

1.5 Overhead lines must be insulated copper or insulated aluminum wire.

1.6 The metal bracket of the mobile iodine tungsten lamp should have a reliable ground (zero), and the height of the lamp from the ground must not be less than 2.5m.

1.7 The high pressure xenon lamp mounting bracket should be solid and reliable, and must have rainproof measures.

1.8 The outdoor lighting of construction lighting shall not be less than 3m from the ground, and the indoor lighting shall not be less than 2.5m above the ground.

1.9 220V iodine tungsten lamp should be fixedly installed for construction lighting. The height should not be less than 3m, and the flammable material should not be less than 500mm. It must not directly illuminate flammable materials, nor can it use 220V iodine tungsten lamp as mobile lighting.

1.10 The form and degree of protection of construction lighting fixtures should be compatible with the environmental conditions.

1.11 In places where night or dark construction is required, emergency lighting power must be provided.

1.12 Red warning lighting must be provided at night for construction sites, installations and equipment that may affect pedestrians, vehicles, airplanes and other safe passage.

2. Construction Site Energy Consumption Overview

At present, the construction site lighting on the construction site is mainly divided into ambient lighting and local work lighting at the construction site. The lamps and lanterns mainly use xenon lamps, high pressure sodium lamps, metal halide lamps, iodine tungsten lamps, and common incandescent lamps and energy-saving lamps.

Most of the power of xenon lamp, high pressure sodium lamp or metal halide lamp is between 1000W and 4000W. When there is construction requirement at night, it is understandable to ensure sufficient illumination, but when there is no construction work at night, the purpose of turning on the lamp is only for safety needs. Once it is turned on, It will generally work all night. This type of light source does not have the dimming feature, it will be very wasteful.

Iodine tungsten lamp power is generally 500W ~ 1000W, because the area of ​​local operations are mostly below 10m2, because this type of lamp is a diffuse type lighting fixture, the lamp surface temperature is high, the potential safety hazards. In addition, the light efficiency is low and the irradiation area is large, resulting in very serious waste.

3, energy-saving measures

By contrasting the effects of various lighting sources on-site lighting, we have adopted a LED tower chandelier instead of a high-power Xenon lamp under the premise of ensuring lighting safety in the construction site lighting management, with flexible control and significant energy saving.

LED light source has the following advantages:

a) Green and environmental protection: The monochromaticity is good, the LED spectrum is concentrated, there is no extra infrared, ultraviolet and other spectra, heat, radiation is very little, and there is little impact on the objects to be photographed. And mercury-free hazardous substances, waste can be recycled, no pollution.

b) Strong directionality: Plane emission and strong directionality. It is different from point light source incandescent lamps, viewing angle ≤ 120 °.

c) Fast response: The response time is short, only 60ns, the start is very fast; incandescent lamps or metal halide lamps are of the order of milliseconds; high pressure sodium or metal halide lamps often take 1 to 2 minutes to fully start.

d) Low voltage: The driving voltage is low, the working voltage is DC, and it is safe.

e) Small size: Small size and light weight. The use of its characteristics can be designed thin, light, and compact all kinds of lamps; backlight products.

f) Multi-color: The LED is colorful and colorful. Different semiconductor materials, different colors of light. The color saturation reaches 130% and the combination of different colors of different colors changes. With the use of the timing control circuit, rich dynamic effects can be achieved.

g) The control is convenient: as long as the current is adjusted, it can be dimmed at will to make the light more clear and soft to make people feel more comfortable.

3.2 light source selection

a) Ambient lighting at the construction site, using multiple sets of LED sub-control intelligent light sources to replace high pressure sodium or metal halide lamps;

b) Indoor lighting in the building site, using multiple low-power low-voltage lighting products to replace metal halide lamps;

c) Construction and living areas, low voltage LED lighting products.