Cyber Nugget IT Services offers all related Power Protection products on a turnkey basis to a wide range of Industries such as I.T, Telecommunications, Access and Process Control, Emergency Lighting, Medical Equipment and Banking
UPS backup systems for the more robust requirements. Where needs are greater and mission critical equipment needs protection 24/7
Ensuring that your Uninterruptible Power Supply (UPS) is functioning optimally always is an important part of the backup strategy you need to have in place. We repair and service UPS devices, carry a large UPS battery stock and can certainly assist you in maintaining your backup power insurance is intact.
Because your UPS lies dormant for long periods of time, aside from smoothing out electrical currents when necessary, it’s critical that you get your device checked and serviced on a regular basis. When the power outage occurs, it’s essential that your UPS be able to function flawlessly, because that’s when you need it most. If your UPS fails to function as it needs to in a power outage, you could end up having to deal with data corruption or malfunctioning machinery. With proper servicing, maintenance and regular upkeep, your UPS could last for up to ten or twenty years. The life span of your chosen UPS depends on the size, type and environmental conditions of your unit.
Once your UPS has been installed in your office or home, you should have it tested it on a regular basis, to ensure that it’s in good working condition. Get the Right UPS Solution to Match Your Needs. Don’t be caught investing in the wrong UPS system for your exact needs. It is highly recommended that you talk with someone knowledgeable and with experience in the UPS industry. Make your investment really work for you and have the peace of mind that you have the perfect fit, that can organically grow with your expansion plans too.
When downtime costs you in profits and reputation you simply cannot afford not to have a contingency plan in place. Source the right UPS System for your needs, one that you can grow into. Keep your company secure – with production and momentum flowing.
We have been beating the Eskom Load Shedding problem with our High Quality UPS Solutions for every requirement, Backed by Years of Experience and Expertise. UPS Solutions for HOME, SME and through Consulting, Planning and Strategist, Servicing Large Corporate and Industry. Cyber Nugget IT Services can ensure that your Uninterruptible Power Supply (UPS) is functioning optimally at all times is an important part of the Backup strategy you need to have in place. We Repair and Service UPS devices, and can certainly assist you in maintaining your Backup Power insurance is intact. Sales & Support countrywide Available
Service Checks and Professional Maintenance should be undertaken on your UPS on a regular basis. Whether these service checks occur on a quarterly, six months or annual basis, is dependent on the type and age of your chosen Uninterruptible Power Supply (UPS) device. The age of the Uninterruptible Power Supply (UPS) Battery also comes into play here and must be considered when scheduling service checks and maintenance appointments. Cyber Nugget IT Services is able to assist customers with inquiries that require On-Site Inspection, Analysis and Evaluation. Full Technical Reports and Recommendations are provided. Contact us Today to make an appointment.
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Mercury UPS Range – At work for you
The Mercury UPS range double conversion true on-line series, with superior input voltage window for energy saving, ECO mode, super powerful charger, is an ideal solution to your computer Centre, network Centre, communications system, automatic control system or other critical systems.
The Mercury UPS’s are an entry-level cost-effective solution, are rated 1kVA, 2kVA and 3kVA and are specifically for use with 1, 2 or 4 PC’s respectively and are designed to provide enough time for an orderly shutdown.
Perfect UPS for SMEs & integrating into Corporate solutions.
The Saturn has the smallest footprint transformer-less parallel redundancy online UPS series, featured with smallest footprint cabinet, built-in batteries, DSP control, common batter, programmable battery voltage, 3-level intelligent charge mode with powerful battery charger, is an ideal budget-concerned solution to your server bank, industrial equipment, internet data Centre, telecom, IT equipment and other mission-critical applications.
The units in this range are sized from 6kVA to 20kVA with options of single or 3 phase.
TESCOM SSPRO Plus Series are sine wave units, manufactured with state of the art technology, producing microprocessor controlled output.
Available in three options: Standard Unit – typical run time of 10-30 minutes, Long Run Unit – typical run time of 30 – 120 minutes, and the Rack Mount Unit – typical run time of 10-120 minutes. ( Longer time Options available )
Pure sine wave inline UPS. Input/Output 200V/220V/230V/240V sellectable. Input frequency of 47Hz – 65Hz, 50/60 Hz auto sensing with an efficiency of 79% in normal mode. Typical back up time of 10– 30 minutes, load dependent. Long run times also available.
There are 1100VA, 2200VA, 3300VA & 5000VA UPS units in this series.d
The Apex /PC Buddy UPS’s are an entry level cost effective solution, are rated 700VA, 1200VA, 2000VA and 3000VA and are specifically for use with 1, 2 or 4 PC’s respectively and are designed to provide enough time for an orderly shutdown. ( Longer Run Options available )
The Apex /PC Buddy Series uses a 12V/7AH battery type and has a 5 – 10 minute backup time (“Backup Time” is measured by Minutes based on running a PC with a 15″ monitor) running 1 – 6 PC units respectively and has a typical transfer time of 2-6ms to 4-6ms respectively. With a recharge time of 8 hours (to 90% after complete discharge), it also has a full protection (discharge, overcharge and overload protection). It has a Smart RS-232 Interface and supports Windows 95/98/NT/2000/XP, Novell and Linux.
Since 2005 we have been beating the Eskom load shedding problem with our high quality UPS Solutions for every requirement, backed by years of experience and expertise. UPS solutions for HOME, SME and through consulting, planning and strategising, servicing large corporate and industry. Sales & Support countrywide
This discusses the advantages and disadvantages of the two different battery technologies, namely Lead Acid and Lithium Iron (LiFePO4). This paper is intended to explain the advantages and shortcomings of the different battery technologies and how they compare.
Lead Acid battery disadvantages
1.1. Limited “Useable” Capacity
Due to the life and cycle curvatures of a lead acid battery, it is typically considered wise to use just
30% – 50% of the rated capacity. This ratio
provides the most effective ‘cost to cycle’ ratio. This means that a 100 Amp hour battery bank in practice only provides, at best, 50 Amp hours of real
capacity. Even if you occasionally drain the
batteries more than this their life will be drastically reduced.
1.2. Limited Cycle Life
Lead Acid batteries have a limited cycle life and their life span varies greatly depending on the depth of discharge (DoD) and how often you cycle them. High grade lead acid batteries are usually only good for 500-1000 cycles. If you are frequently cycling your batteries it means that you could be replacing your batteries every 2 years.. Slow & Inefficient Charging
Another characteristic is that the final 20% of lead acid battery capacity cannot be “fast” charged. The first 80% can be “Bulk Charged” by a smart three-stage charger quickly (particularly AGM batteries can handle a high bulk charging current), but then the “Absorption” phase begins, and the charging current reduces to a trickle charge.
It takes 12-16 hours to fully charge and complete a float charge for lead acid batteries, but if you experience frequent or daily power cuts or dependent on solar charging only, the sun will set before that final 20% has been topped off, you can easily end up with batteries that never actually get fully charged and you end up destroying the battery life span.
Not fully charging the final few percent would not be much of a problem in practice, if it wasn’t for the fact that a failure to regularly fully charge lead acid batteries prematurely ages them.
1.4. Wasted Energy
Lead acid batteries suffer another efficiency issue – they waste as much as 15% of the
energy put into them via inherent charging inefficiency. So, if you have 100 Ah of power, you can only supply 85 Ah. This is due to the internal resistances of the battery and efficiency loss.
This can be especially frustrating when charging via solar, when you are trying to squeeze as much efficiency out of every amp as possible before the sun goes down or gets covered up by clouds.
1.5. Peukert’s Losses
Most people have probably never of heard of the German scientist W. Peukert, or of Peukert’s Law. Interestingly, he proved that the faster you discharge a lead acid battery of any type, the less energy you can get out of it.
This effect can be calculated by applying Peukert’s Law.
In practice this means that high current loads like an air conditioner, a microwave or an induction cooktop can result in a lead acid battery bank being able to only deliver as little as
60% of its normal capacity.
This is a massive drawback when you need to pull a large amount of power from your batteries.
The above example shows specification of a normal AGM battery. This spec shows that the lead acid battery can provide 100% of its rated capacity if discharged in 20 hours (C/20). If discharged in one hour (C/1), only 60% of rated capacity will be delivered by the battery. This is direct effect of Peukert’s losses.
1.6. Placement issues
Deep cycle lead acid batteries release harmful acidic gas while they are charging, and must be contained in a sealed battery box that is vented to the outside. They must also be stored upright, to avoid battery acid spills.
Lead acid AGM batteries do not have these constraints and can be placed in unventilated areas; however they are still cumbersome to work with and contain highly corrosive acid.
1.7. Maintenance Requirements
Flooded lead acid batteries must be periodically topped off with distilled water, which can be a cumbersome maintenance chore if your battery bays are difficult to get to.
AGM and gel cells though are usually maintenance free. Being maintenance free comes with a downside though – a flooded cell battery that is accidentally overcharged can often be salvaged by replacing the water that boiled off. A gel or AGM battery that is overcharged is often irreversibly destroyed.
1.8. Voltage Sag
A fully charged 12-volt lead acid battery starts off around 12.8 volts, but as it is drained the voltage drops steadily. The voltage drops below 12 volts when the battery still has 35% of its total capacity remaining, but some electronics may fail to operate with less than a full 12-volt supply. This “sag” effect can also lead to lights dimming or appliances switching off.
1.9. Size & Weight
A typical 100Ah sized Lead Acid battery that is commonly used for large battery banks is
35x18x20cm. This common battery provides just 100 Amp hours of total capacity – which leaves you with 50Amp hours truly usable, and only 40Amp hours for high discharge applications.
If you have limited space for batteries in your area– size alone of the batteries will limit your capacity.
The Lithium Difference
Lead acid batteries are made from a mixture of lead plates and sulfuric acid. This was the first type of rechargeable battery, invented way back in 1859.
Lithium ion batteries on the other hand are a much newer invention, and have only been
around in a commercially viable form since the 1980′s.
Lithium technology has become well proven and understood for powering small electronics like laptops or cordless tools and has become increasingly common in these applications – edging out the older NiCad (Nickel-Cadmium) rechargeable battery chemistry due to lithium’s many advantages.
Nevertheless in 1996 a new formula for mixing lithium ion batteries was developed – Lithium Iron Phosphate. Known as LiFePO4 or LFP, these batteries have a slightly lower energy density than Lithium Ion, but are much safer, intrinsically non-combustible, and thus vastly safer than Lithium-Cobalt-Oxide. Once you consider the advantages, Lithium-Ion batteries
are a much better choice.
2.1. Superior “Useable” Capacity
Unlike with lead acid batteries, it is considered practical to regularly use 90% or more of the rated capacity of a lithium battery bank, and occasionally more. Consider a 100 Amp hour battery – if it was lead acid you would be wise to use just 30 to 50 Amp hours of power, but with lithium you can use 90 Amp hours or even 100Ah (100% DoD) without a problem.
2.2. Extended Cycle Life
Manufacturers and laboratories report that tens of thousands of cycles can be expected from a high quality LiFePo4 battery. From a practical point of view, and in real use, a high quality LiFePO4 battery can deliver at least 3000 charge/discharge cycles at 100% DoD at 1C discharge rate. These values are dependent on the charge rate, the depth of discharge but more importantly on the quality of the cells used.
In contrast, even the best deep cycle lead acid batteries are typically only good for 500-1000 cycles.
For batteries, such as the Hubble X-100, using high quality cells, 5000 to 6000 cycles can be delivered at 1C and 80% DoD. The number of cycles can be greatly increased by reducing the depth of discharge (DoD).
The diagram below shows the number of cycles as a function of the depth of discharge for the Hubble X-100 Lithium ESS:
2.3. Peukert’s Losses & Voltage Sag Virtually Non-Existent
The discharge curve of lithium batteries (especially relative to lead acid) is essentially flat –
meaning that a 20% charged battery will be providing nearly the same output voltage as an
80% charged battery. This prevents any issues caused by the “voltage sag” as they discharge.
In practice, this means that Lithium-Ion battery banks are very well suited to powering high current loads like an air conditioner, a microwave or an induction cooktop.
2.4. Size & Weight Advantages
Lithium and LifePO4 (LFP) has a much higher energy density per kg than lead acid. You can thus have a smaller footprint for your batteries when using LFP.
2.5. Fast & Efficient Charging
Lithium batteries can be “fast” charged to 100% of capacity. Unlike with lead acid, there is no need for an absorption phase to get the final 20% stored. If your charger is powerful enough, lithium batteries can also be charged extremely fast, if you can provide enough charging amps
– you can fully charge a 100AH Lithium LifePO4 battery in 1 hour. This translates to a 1C
rated battery, where lead acid batteries are usually C/20 (5 times slower charge rated).
But even if you don’t manage to fully top off to 100%, no problem – unlike with lead acid, a failure to regularly fully charge Lithium-Ion batteries does not damage the batteries. This gives you immense flexibility to tap into energy sources whenever you can get them without worrying about needing to do a full charge regularly. Several partly cloudy days with your solar system? No problem that you can’t top off before the sun goes down, as long as you’re keeping on top of your needs. With lithium, you can charge up what you can and not be concerned about leaving your battery bank perpetually undercharged.
2.6. Minimal Wasted Energy
Lead acid batteries are less efficient at storing power than lithium ion batteries. Lithium batteries charge at nearly 100% efficiency, compared to the 85% efficiency of most lead acid batteries.
This can be especially important when charging via solar, when you are trying to squeeze as much efficiency out of every amp as possible before the sun goes down or gets covered up by clouds.
Theoretically, with lithium nearly all the power from your solar panels you’re able to collect goes into your batteries. With limited roof & storage space for panels, this become very important in optimizing every square inch of wattage you’re able to mount.
2.7. Climate Resistance
Lead acid batteries and lithium lose their capacity in cold environments. As you can see in the diagram below, Lithium-ion batteries are much more efficient at low temperatures. Moreover, the discharge rate affects the performance of lead acid batteries. At -20°C, a Lithium battery that delivers a 1C current (one times its capacity), can deliver more than 80% of its energy when the AGM battery will deliver 30% of its capacity.
2.8. Fewer Placement Issues
Lithium-ion batteries do not need to be stored upright, or in a vented battery compartment. This is especially useful if you have an existing battery bay that is limited in size, but you want or need more capacity than lead acid is currently able to provide.
The Hubble X-100 rackmount range is easily racked and stored in a standard rack mounted cabinet to maximum space and ease of use.
2.9. Zero maintenance requirements
Lithium-Ion batteries are typically maintenance free. A “balancing” process to make sure all the cells in a battery bank are equally charged is automatically achieved by the internal BMS (Battery Management System).