UNINTERRUPTIBLE POWER SOLUTIONS
An uninterrupted power supply (Ups) is a backup power supply that, in case of power failure or fluctuations, allows enough time for an orderly shutdown of the system or for a standby generator to start up. Various backup options are available and the period of the backup time depends on the clients needs and specifications.
In the event of a power shortage/outage a UPS can provide you with enough energy to correctly shut down your PC and save any documents. There are larger UPS systems that are able to provide up to 12 hours battery backup. Have a look at our various products.
Choosing your UPS system : UPS is a backup power supply that allows enough time for an orderly shutdown of systems or for a standby generator to start up.
- Continuously online UPS provides steady and spike free AC power even when your main power supply is available, recharging continuously by the main supply.
- Standby UPS automatically comes on when the main supply of power fails or fluctuates, the batteries with this system recharge when not in use.
The UPS VA rating you require will depend on the load current of the equipment you intend plugging into the UPS.
SIZING A UPS SYSTEM
Computer equipment requires: 2 Amps (Current)
Mains Voltage Used: 230VAC (AC Voltage)
Power Factor of computer equipment: 0.6 (typical for computer equipment)
2A x 230V =460W / 0.6 PF = 766 VA
You will require a 800VA to cater for your future expansions and to not stress the UPS by running on 100% load all the time, you add 20-25% capacity. Therefore a 1000VA UPS (1KVA) should be used in this case.
This type of UPS system will provide backup to enable you to save your work and shutdown your computer after a power failure and is also designed to regulate the output voltage and prevent, to a large degree, any spike, sags and blackouts from reaching your sensitive equipment.
The main advantage of this design is that the inverter/converter unit is always connected to the output, powering the equipment. This design allows for faster response to a power failure than a standby UPS.
BACK IT UP
The backup time is directly proportional to the load that is connected to the UPS.The more the load,the less the backup time. You are able to have back up time for as little as 5 minutes, to ensure correctly shutting down your equipment and saving documents, to hours of back up time which would enable your equipment to keep running until main power returns. UPS system is often used to provide uninterrupted power when the main power is down and until the generator starts up.
A parallel system comprises of multiple UPS systems or UPS modules.These are installed so that they operate in parallel to support a common critical load. There are two main reasons for selecting this type of system. The first would be to increase the UPS capacity, which enables the system to power a larger load than possible with a single module. The second reason is to increase the system reliability by introducing modular redundancy.
The is also a smaller UPS system that can be paralleled (Single phase units)
This type of UPS system will provide total protection and backup on power failure for critical applications. The double conversion, double isolation and the pure sinewave form output ensure the cleanest, most compatible AC output for computers and any other critical load. Typical backup time = 5 – 10 Minutes. Plug-in external battery packs are available to extend the backup time to several hours. This type of UPS System is aimed at the professional, medical/industrial and upper business market and is recommended when you have a very dirty, noisy & unreliable mains supply.
BATTERY SUPPLY AND REPLACEMENT
To protect your UPS and its batteries, the system should be placed in the correct environment. UPS systems are not designed to be placed outside where they are exposed to the elements. They should preferably be placed in an air conditioned room but this is not necessary if the environment temperature does not exceed 24 – 26 degrees celcius. The hotter the environment, the shorter the life span of the batteries. UPS batteries are normally either sealed maintenance free, or semi-sealed maintenance free batteries and have a life span of 3-5years. Long life batteries, 8-10 years.
PREVENTIVE MAINTENANCE CONTRACTS
Ups systems, especially larger systems, require maintenance. We offer countrywide service agreements, ranging from basic maintenance to full service contracts. These services help to extend the UPS and battery life span.
A power inverter is an electronic device or circuitry that changes direct current (DC) to alternating current (AC) . The inverter does not produce any power : the power is provided by the DC Source, without DC batteries the inverter will not switch on. Static inverters do not use moving parts in the conversion process. Circuitry that performs the opposite function , converting AC TO DC , is called a rectifier.