Many countries such as India and Pakistan have an average temperature of 30-35°C during the hot season. Inside the telecom cabinet, the temperature is even higher and climb over 50 °C. You may already know it, for every 10°C increase in temperature, the battery life will be cut by two.

Due to the nature and construction of the lead acid battery, it cannot withstand that kind of environment, this is why telecom sites have to be equipped with air-conditioner.

Not only does it increase your capital expenses (CAPEX) and operational expenditure (OPEX) by spending thousands of dollars per year and per site in maintenance & electricity fees, it will also increase the energy used and thus increase your CO2 emissions. Reduction of Energy Consumption and increase of Energy Efficiency is one of the most important keys for Telecom Operators.

Slave mode with external energy management system (EMS)

HESS itself is a kind of energy container;

1. HESS starts being discharged or charged by the instruction of an external energy management system (EMS);
2. HESS itself only monitors and protects itself from being over discharged or over charged.

HESS energy charging is activated once the system has detected by power meter that there is a surplus of energy being uploaded to the grid, while the HESS hasn’t been fully charged;

1. HESS energy discharging is activated once the system has detected by power meter that there is additional electricity request from the grid, while the HESS hasn’t been fully discharged.

Solar energy systems are becoming a vital part of our overall energy picture. Roof-mounted solar panels create energy instantly from the sun’s rays. However, some of this energy is not immediately required and the excess can be saved to battery a storage. This surplus energy can be used at another time when the sun is not shining. The stored energy can also act as an emergency backup in the case of main’s failure.

When considering energy storage system solutions, the battery life and safety features are critical. This is why the NARADA solution comes complete with our well proven and advanced lead carbon and lithium-ion phosphate technology in a smart, robust cabinet, providing a safe and secure storage facility.

Slave mode with external energy management system (EMS)

1. HESS itself is a kind of energy container;
2. HESS starts being discharged or charged by the instruction of an external energy management system (EMS);
3. HESS itself only monitors and protects itself from being over discharged or over charged.

1. HESS energy charging is activated once the system has detected by power meter that there is a surplus of energy being uploaded to the grid, while the HESS hasn’t been fully charged;
2. HESS energy discharging is activated once the system has detected by power meter that there is additional electricity request from the grid, while the HESS hasn’t been fully discharged.

Narada offers a complete line of standard and seismic racks designed and built exclusively for Narada standby power batteries.

Narada battery racks mainly can be divided into three groups:

1. Standard racks for both 48V and high voltage system with cell restraint equipment and electricity insulation.

2. Seismic racks for both 48V and high voltage system are designed to meet Zone 4 requirement, e.g. the Uniform Building Code (UBC), or Bellcore Network Equipment-Building System (NEBS) requirement, Telecordia standard.

3. Vertical battery racks are designed for both tubular flooded and gel batteries. The racks comply with IEEE693, NEBS, Telecordia, UBC standards for substations, Telecom, Switchgear and UPS applications.

Main concerns and advantages of Narada battery racks:

Cell restraint equipment is offered for standard racks to provide shock protection.

All shock protected and seismic racks are supplied with anti-static spacers and cell clamps to minimize cell damage caused by an earthquake.

For additional protection, all racks can be installed with a rubber coating for electricity insulation in the event of a spill and short circuit.

The Narada Coolstar battery is designed to protect VRLA type lead acid batteries in telecommunication and photovoltaic energy storage applications against stressful ambient temperature conditions.

The Coolstar’s energy efficient operation allows to significantly reduce equipment-cooling costs by targeting the thermal management efforts directly toward the 48V batteries. It will minimize air conditioning energy costs of radio base stations by splitting the thermal management into natural ventilation and forced cooling. Coolstar is ideal for countries with hot or tropical climate and for any location where cooling/heating energy is at a premium and its consumption has to be minimized.

The Coolstar cabinet has been designed on the basis of extensive CFD simulations of cell layout and airflow pattern.

With the maturing of telecom industry, competitiveness and social responsibility are becoming more and more important and energy savings and CO2 emission reduction solutions become a hot topic. Meanwhile, the continuous increase in fuel costs for generators is driving operators who are using power in off-grid or unreliable-grid locations to search for more cost-effective ways to power their operations. Therefore, choosing a reliable and optimized power supply system is vital for staying competitive. Choosing an suboptimal hybrid technology may have a major impact on the site’s operating costs and increase the CO₂ emissions unnecessarily.

In an optimally balanced hybrid power system many things should be considered. Below is an illustration of an integrated system consisting of Diesel Gen set, diesel fuel tank, energy storage battery, air conditioner, thermal management system and system controller

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With increasing growth in the demand for electricity worldwide and the rapid development of renewable energy sources, the safety of the grid becomes more and more important. Blackout incidents will negatively impact any economy and threaten public safety. Energy storage is regarded as an essential solution to make any power grid more reliable and more flexible, which can be achieved through time shifting, load leveling, smoothing wind/solar output and regulating the frequency etc. Narada energy storage technology relies on patented long-cycle life OPzV/REX series batteries and excellent LiFePO4 lithium battery technology, advanced battery pack technology and intelligent battery management system technology which can offer a wide variety of solutions from large-scale energy storage system solution (ESS, up to MW) to home energy storage system solution (HESS, tens of kilowatts). Narada has completed many successful projects utilizing battery storage solutions from KW to MW in size at home and abroad which covers solar generation, islands generation and also house distributed use.