China emergency light manufacturers say that in large b […]
China emergency light manufacturers say that in large buildings, this could mean that there is a lot of room for emergency lighting, and more equipment usually means more cost. The good news is that with LED and Power over Ethernet technology - combined with the DALI standard - there are more options than ever before to produce compatible and convenient emergency lighting.
1. LED and emergency lighting
The low power consumption and longer life of LED luminaires make them an increasingly popular choice for commercial applications where reduced energy costs and equipment life are attractive to facility managers. In style-constrained installations, the reduced size and versatility of LED technology make it an attractive option because lighting must confirm interior design.
In the context of emergency lighting requirements, LED lights provide a specified brightness after turning on - many energy saving options do not have a "warm up" delay - this is the perfect tool to meet legal requirements. Emergency lighting is provided immediately when the mains supply is de-energized.
2. The benefits of DALI
The Digital Addressable Lighting Interface (DALI) is a network-based lighting control system. This is the system we use extensively in Prolojik because it offers advantages to a wide range of customers, including lower installation and maintenance costs, as well as better control of their lighting systems, especially when using user-friendly interfaces. For example our perspective software.
In terms of emergency lighting, the DALI system offers the greatest benefit in performing statutory tests. The emergency lighting system must be checked monthly to ensure that the backup power and indicators are working properly; “drainage” should be done annually. This is an emergency system that is put into operation in the shortest legal time to ensure that the lighting system works as expected and that the backup battery is successfully charged when the main power is restored.
At its simplest, the testing process can be performed manually: once the emergency luminaire is activated, direct floor walking will identify any lamp failure. When the main power is restored, the second step is to check if all batteries are charged. In a small building, this may be fine. But in most commercial buildings, this time consuming process is resource intensive and there is a risk of human error during floor walks or in the records of testing and subsequent maintenance.
With the DALI system, there is no need to walk on the floor, as each luminaire not only reports its own light output level and any faults during the test, but the DALI system allows continuous monitoring of the luminaires, positioning and troubleshooting without waiting for the next booking test. In most cases, manually performing this type of active system maintenance can be costly. With the DALI system, the only additional cost to consider is the central test system interface.
3. The power of the integrated approach
When normal and emergency lighting are combined in the same fixture in a single system, the advantages of LED and DALI technology are completely unlocked.
The long life of LED lamps makes them ideal for luminaires, providing both normal and emergency lighting. As an added bonus, LED lights can emit the required emergency lighting levels below their full power output, extending the battery life required during mains power outages.
In the case of a DALI system, the lighting control network does not require an auxiliary power supply.