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In the field such as telecommunications, UPS, finance, electric power and so on, the VRLA batteries are usually used in a series connection, but when there exists a faulty or several faulty batteries, the performance/life of the battery bank will deteriorate seriously to endanger the safety of power supply. After inspecting and analyzing the problem occurred of the battery backup time shortage in...
With the development of telecom industry, the solution of energy saving and CO2 emission reduction ha become a hot topic since competitiveness and socia responsibility is more and more important. According to data statistics, cooling system has consumed up to 50% of tota energy consumption to maintain battery temperature at around 25°C by air conditioner.
As a large scale Telecommunications Operator with a vast network as well as a large customer base, determining the most efficient and effective means of battery maintenance has always been an important and also a huge task for China Mobile. Starting in 2006, China Mobile has been investigating the potential of using an Ohmic testing method to play a role in easing the huge workload of battery maintenance...
Vodafone, China Mobile and Huawei have started a joint green technology programme to advance renewable energy application in wireless networks to reduce diesel consumption and to contribute substantially to CO2 emission reduction. Three experimental BTS sites, an NFB PV site, a macro BTS PV-diesel site and a distributed BTS PV-wind site, were set up to verify and optimize system design and implementation...
Since the year of 2006, China Mobile had carried out field tests on hundreds of strings of batteries to verify how conductance/impedance tests could indicate the battery's health condition and its capacity, results of which has been presented in 2007 Intelec paper. With the conclusions drawn from the validation filed tests, China Mobile started to apply the ohmic testing technology in the practice...
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