Disadvantages of battery cabinets at communication sites

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6 FAQs about Disadvantages of battery cabinets at communication sites

Do data center and network room UPS systems use lead-acid batteries?

Although alternative energy storage technologies such as fuel cells, flywheels, lithium ion, and nickel cadmium batteries are being explored (see White Paper 65, Comparing Data Center Batteries, Flywheels, and Ultracapacitors for more details) data center and network room UPS systems almost exclu-sively utilize lead-acid batteries.

Do flooded or wet cell batteries need a separate room?

Vented (flooded or wet cell) batteries have a very long life but present significant complexity of installation and maintenance, the most significant being the need to build a separate battery room. These limitations have historically restricted the application of vented cells to very high power installations.

What are the characteristics of a vented battery?

Characteristics of the vented battery include the following: VRLA batteries have been utilized for approximately 20 years. This technology offers a higher power density and lower capital costs than traditional vented cell solutions. VRLA batteries are typically deployed within power systems rated below 500 kVA.

Is a battery a hazard?

The primary hazard is that areas wet with battery leakage constitute conductive paths to ground that can pose a very serious risk of ground fault. The biggest concern for vented batteries is that the battery could somehow tip and spill its liquid contents during maintenance or natural disaster.

What causes a vented battery to fail?

A drop in liquid level that exposes the tops of the plates can result in rapid failure of the cell. Thermal runaway - Vented batteries rarely experience thermal runaway because convection currents in the liquid electrolyte stop the process.

What causes electrolyte loss on vented batteries?

Ironically, a common cause of electrolyte loss on vented batteries is dripped liquid during specific gravity inspections, as part of routine maintenance. The primary hazard is that areas wet with battery leakage constitute conductive paths to ground that can pose a very serious risk of ground fault.

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