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How do I decide on the capacity of the UPS I require? |
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Make sure in case of power failure how many tube lights, fans , TV , music system , computers etc you require. Add the power add the power ratings of all fans, lights, tv , computers etc. in watts and multiply the total by 1.4 to get inters of VA. |
For example, assume the following approximate load and add them to get the total capacity. |
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| Appliances |
Approximate Power
consumption |
Numbers |
Total Power |
| Tube Light |
50 watts |
5 |
250 watts |
| Fan |
70 watts |
3 |
210 watts |
| TV-21'' |
125 watts |
1 |
125 watts |
| TV-29” |
150 watts |
1 |
150 watts |
| Music Systems |
50 watts |
1 |
50 watts |
| TOTAL (In watts) : |
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785 watts. |
VA rating
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= watts x 1.4
= 785 x 1.4
= 1099 Watts |
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We advise you to by at least 20 % more capacity than the calculated capacity. |
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How do I decide on the capacity of the Battery required ? |
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| It is difficult to answer this question. Because the backup depends on the load , type and make of the battery. The load an UPS system supports entirely depends on the Capacity of the UPS and not on the capacity of the Battery. The backup depends on two factors. One is load and the other is capacity of the Battery. Normally, the backup is specified at full load. For example if a 500VA UPS gives 2 hours backup at full load with an 120 AH battery it will give more backup for lesser load for the same capacity of UPS and Battery. |
| click here for an approximate Battery backup chart |
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What is the warranty period for UPS and Battery ? |
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| All power planet UPS comes with one year warranty and Tubular Lead Acid Batteries with two years warranty from the date of installation. |
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How frequently I need to top up distilled water for the Battery? |
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It is enough if you top up distilled water once in 6 months. However we suggest you to top up distilled for the Batteries once in 3 to 4 months. The frequency of top up again depends on the type of charger the UPS has and the quality of the Battery. With regulated chargers the top up frequency is less. During the first year of installation , Power Planet will carry out topping of distilled water once in two months for a period of one year free for you. From the second year onwards the services offered by us are payable. If the customer desires to top up the distilled water himself , he can do so. |
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What precaution should be taken while installing UPS and Batteries? |
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1 |
Ensure that , the place where you want to install is neat, clean, and has good ventilation. |
2 |
Ensure that at least minimum space is available for a service engineer to carryout the repair and installation. |
3 |
Connect the negative cable (Black) to the negative terminal of Battery and positive cable (Red) to the positive terminal of the Battery by keeping the UPS front switch off. |
4 |
Connect the load to the UPS and UPS mains cable to the mains and normalize the switches. |
5 |
Install the batteries on an insulated surface such as a sheet of rubber or wooden planks. |
6 |
Battery connections should be secure to prevent sparking & melting of terminals. |
7 |
Take care not to offer much load on terminals while tightening and not to short circuit. |
8 |
Apply white petroleum jelly to the terminals to prevent corrosion. |
9 |
Batteries should be installed in well ventilated place sheltered from sunlight, |
10 |
Do not bring fire hazardous materials , metal parts, flame, lighted cigarettes near the Battery as there is a chance of explosion or injury. |
11 |
Keep the surface of the Battery clean & tidy. |
12 |
Check the electrolyte periodically and top up distilled water only if required. |
13 |
NEVER USE ACID TO TOP UP. |
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Do I need to do separate electrical wiring ? |
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No , you don't require if you are buying an Inverter for lighting application OR for lighting and computer application. Intimate us the approximate load that you use during the mains mode. We will accordingly do the internal wiring of the UPS so that you don't have to do the external wiring in the building. |
| All that wiring you need to do is from the MCB's to the place you want to keep the UPS. |
UPS with built-in AVR need separate wiring as the transformer within the UPS delivers the load current during the mains mode. The total load on UPS with built-in AVR should never exceed more than its rated capacity. Otherwise the transformer gets burnt. During the Battery mode , overload protection has been provided and you don't have to worry. |
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What are the types of Battery? |
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| There are three types of batteries. |
Automotive Batteries: Used for automobiles. These are less expensive, require frequent distilled water top up, Shorter life span, Lees efficient. Not recommended for Inverter / UPS application. |
Tubular Lead Acid Batteries: These of Batteries find applications in Inverters, UPS , Diesel Generator, Emergency lighting, EPABX, Alarm Systems, Solar Power Plants , Fork Lifts etc. |
| These are expensive, requires distilled water top up once in 6 months , Longer life, Better efficiency. |
VRLA Batteries (SMF): Valve regulated lead acid Batteries also called Sealed Maintenance Free Batteries and are widely used for Inverters, UPS , Emergency lighting, EPABX, Alarm Systems, Electrical and Solar Power Plants , etc. These more expensive than the Automotive and Tubular Lead Acid Batteries , Longer life, Better efficiency. |
| servo stabilizers-section |
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What are different kinds of Voltage Stabilizers ? |
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| There are two different kind of stabilizers |
1. Static Voltage Stabilizers: The kind of stabilizers have a transformer with several voltage tapings, relays and control circuit etc. The output voltage will be maintained between 200 Volts to 240 Volts for input variation in line voltage from 175 Volts to 275 Volts (Normal range) and from 140 Volts to 300 Volts (Wide range). |
| For technical specifications refer static stabilizers. |
2. Servo Voltage Stabilizers: These stabilizers have variac and a AC synchronous motor coupled together and a control circuit to drive the motor. The output voltage from these stabilizers will be 230 Volts with a voltage regulation of + / - 1 %. Normal and wide input ranges are available. |
| For technical specification refer Servo stabilizers. |
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| Power failure (Blackouts) : Complete loss of power |
| Under Voltage (Brownouts) : Where the electricity (i.e. voltage level) dips below a specified range , but can still power electrical equipment. Such condition may cause damage to the equipments. |
| Over Voltage (Swells): Where the electricity (i.e. voltage level) rises above a specified range, but can still power electrical equipment which may cause damage. |
| Power Sag (Dip): It is a short term low voltage and will reason in computer loss, bits error in data, power supply damage and equipment shutdown. |
| Voltage Spikes and Surges: Abrupt increase in voltage for fraction of seconds. Voltage spikes are offten introduced in the electrical supply line due to switching of air conditioners , motors, high powered equipments, lightning strokes etc. |
| Electrical Line Noise: It produce small but rapid power fluctuations that cause aberrations in smooth wave shape of power line. Electrical noise will result in computer data errors, computer lockup, network interface card failure, improper results from test equipments. |
| Switching Transients: These are introduced by the electrical neighbors such as switch mode power supplies, grid switch, power factor correction, industrial equipment like plasma cutting, MRI scanner or X ray equipment and switch on and off of loads in homes and offices such as lamp dimmers, motor speed controllers and thermostats. |
| Frequency Variation: Variation in the frequency will alter equipment performance and erros in time based systems. |
| Hormonic Distortion: Presence of hormonics in the supply will result in equipment overheating, electronic component heating/stress, equipment shutdown, power supply and component damage, erratic equipment operation , reduced server life etc. |
| MOV: Stands for metal oxide varistors |
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