Data Center Equipment Room Lighting Solutions

The lighting power supply of the data center computer room belongs to the category of auxiliary power supply system, but it has certain particularity and independence. The requirements for the lighting equipment in the standby room are far from being as simple as we imagined. The following is a brief introduction to some standards and solutions for the lighting equipment in the computer room:

Requirements for Lighting Effect in Computer Room

The lighting of the computer room requires no flicker, no glare, large illumination, uniform light distribution, and no direct exposure to the glossy surface. In particular, the illuminance at 0.8m from the ground of the display equipment and the control panel is not less than 400 lux, which can be calculated as a fluorescent light of not less than 30W/㎡. For computer rooms without ceilings, ceiling lights or hanging chain fluorescent lights can be used. In the computer room with a suspended ceiling, embedded fluorescent lights are used to form a fluorescent light strip, and the lighting effect is better. However, it must be noted that the starting current of fluorescent lights is much larger than the working current, and the current capacity of the light strip switch should be 5-10 times that of the normal lighting current, so as to avoid the starting current from burning out the switch contacts.

Each light strip and each row of fluorescent lights in the light strip shall be individually controlled by on/off switches. This not only meets the lighting requirements of the computer room, reduces waste, but also prevents the impact of turning on the lights at the same time on the power supply. Note that ballasts for fluorescent lights must be low temperature induction or electronic ballasts. In order to comply with the fire design and construction specifications of the engine room.

Computer Room Lighting Design Standards

The main indicator of computer room lighting design standards is illuminance. Illuminance E: When the luminous flux is projected on the surface of the object, the surface of the object can be illuminated. The illuminance is the surface density of the luminous flux, that is, the ratio of the luminous flux φ hitting the surface of the object to the area S of the surface of the object, that is, E=φ/S. The unit of illuminance is lux (Lx).

When considering the lighting of the computer room, the requirements of the uniformity of the lighting, the stability of the lighting, the color rendering of the light source, the glare and the shadow must be mentioned in the agenda at the same time. These factors will also have an impact that cannot be underestimated for operators and maintenance staff.

Due to the different division of labor in each functional area in the central computer room, the illumination requirements for lighting are also different. The average illuminance of the computer room area can be greater than 500LUX for the vertical working surface 1400 away from the ground.

General Lighting Design Scheme of Computer Room

The layout of lighting should be in accordance with the aesthetics of the computer room, the importance of the location and the location of the equipment.

Considering the beauty of the computer room, the layout of the lights should be evenly arranged, that is, keep a certain distance in the vertical and horizontal directions, and determine the direction of the lights according to the area of ​​the computer room.

Considering the importance of the location, the luminaires should be arranged according to the nature and function of the location to achieve better results. At the same time, the location of the equipment should also consider factors such as avoiding shadows and facilitating maintenance.

The selection of lighting materials in the computer room should choose lights without starters or electronic ballasts, anti-glare lights, lights that can also be used as air conditioners, lights with good overall decoration, and lights with high luminous efficiency. It is recommended to use the reflective high-grade electroplating grid-type LED light group matched with the ceiling for the lighting in the computer room. The specifications are: 600×1200mm. The light tube adopts LED, which has high brightness, no glare, uniform illumination, low noise and fast startup. Provide a new, safe, efficient and comfortable working environment. The lighting system of the computer room adopts multiple sets of 3*36W embedded grille light panels (600*1200). One of the loops is powered by a UPS.

Computer Room Emergency Lighting Design

The lighting system of the computer room should consider the emergency lighting system. Emergency fault lighting generally adopts two schemes. One is to route one route of the lighting circuit to the UPS, and in the event of a power failure, the UPS will provide lighting. Another option is to use emergency LED lights with a 15-minute battery backup. The average illuminance of emergency lighting is 60LUX. The lighting power supply is generally powered by the mains, and it is transferred to the emergency power supply system when the mains stops. In this scheme, it is recommended to use an emergency UPS power supply scheme.

Although computer room equipment does not belong to the category of main power supply equipment, the quality of computer room lighting will not only affect the work efficiency and physical and mental health of computer operators and software and hardware maintenance personnel, but also affect the reliable operation of computers. Therefore, the reasonable selection of lighting control methods, light types, layouts and some related equipment cannot be ignored in decoration electrical engineering.