Telecommunications standby power applications

The number of VRLA batteries used in stationary applications is increasing rapidly. They account for more than 5.2% of the total US standby power production and more than 60% of Japanese and European production. Fig. 5.15 shows a VRLA battery design for telecommunications standby power. Over the past decade, VRLA batteries have been scaled to sizes up to 3000 Ah for industrial applications. Although the original... 

Diesels are used in many industrial applications (for example, for base-load generation in mines, cement plants and in remote regions of the world). In addition, they are often utilized to provide standby power for hospitals, telecommunications, banks, computer centers and office complexes that must have full independent power capability. The diesel can be started rapidly, making it ideal for peak lopping duties to meet maximum load demands, or for emergency use in cases of power supply interruptions. 

The three major types of nonautomobile applications in which lead-acid batteries play important and necessary roles are (1) stationary applications for large-scale electricity storage (2) standby applications for UPS, telecommunications, and emergency lighting and (3) backup power applications. 

The low tnairitenance SAP, SBP and SEP ranges, in addition to being suitable for high-rate applications, are also suitable for low-rate applications such as SP telecommunications, where a low-maintenance standby power battery is required. 

Lead-acid batteries are also used for emergency power in uninterruptible power systems (UPS), telecommunications back-up systems, and safety equipment in critical applications such as hospitals and nuclear power plants. Stationary or standby battery designs and recharge profiles vary according to the specific system requirements. Large battery strings are connected in series to deliver up to several hundred volts. 

This range of batteries is particularly suitable for any standby application calling for a good high-rate discharge characteristic. Such applications include electronic computer and telecommunications equipment, which requires a no-break clean power supply free from voltage surges, frequency variations and other transients. 

The most reliable type of battery for engine starting is the Plants high-performance type. The standby engine is, of course, required for many emergency applications where maximum reliability is essential. These applications include emergency lighting sprinkler systems, industrial processes, telecommunications, and any auxiliary power requirements. 

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