Frequently Asked Questions

Get all the answers to the most frequently asked questions (FAQs) regarding UPS.

UPS is a source of power that is conditioned without too many variations like what is normally encountered with the AC Mains Power. In addition, the UPS also provides backup power in case of mains outage so that any loads that are connected can work without stopping.

UPS are generally classified as Off-line, Line-Interactive and On-Line.

Battery is a store of static energy. Battery provides the necessary power in the event of mains power outage. There are different types of batteries – Sealed Maintenance Free and Tubular Batteries.

The popular / reputed brands of batteries are Exide, Amaron – Quanta and Rocket.

Battery capacities come in various ratings. In the Sealed Maintenance Range, the normal ratings are 7 Ah, 18 Ah, 26 Ah, 42 Ah, 65 Ah, 75 Ah, 100 Ah, 120 Ah, 150 Ah and 200 Ah. The tubular range has capacities of 30 Ah, 40 Ah, 50 Ah, 60 Ah, 100 Ah, 130 Ah, 150 Ah and 200 Ah.

The number and the capacity of the batteries depends on the capacity of the UPS, DC Bus of the UPS and the duration of the backup you need in the event of a mains power outage. The sizing will normally be done by a qualified and experienced sales person based on the above factors and the battery manufacturer’s specifications on the battery characteristics.

The UPS and the associated batteries will be covered under standard warranty terms subsequent to installation. The UPS should be used as per its intended purpose and maintained properly as per the maintenance instructions. Defects encountered under such conditions during the normal operation will be duly rectified by the service team.

Batteries will be covered against any manufacturing defects as mentioned by the battery manufacturer’s warranty terms.

The type of use, the duration of the backup power required in the event of an outage of mains power, the size / capacity of the load are important parameters. Apart from the above, the sizing of the UPS and the batteries should be as per the requirement. Service backup, reliability and credibility of the UPS manufacturer and the brand of batteries are factors which should not be ignored. Of course, the price should be reasonable.

The life of a UPS ranges from 5-8 years.

The batteries life will be around 1-2 years in the case of SMF batteries and 3-5 years in the case of tubular batteries. The batteries have to be replaced after the service life for optimal use of the UPS.

If the UPS is installed in a place where there is no ventilation, then SMF batteries can be chosen. Also if the duration of the power cuts is short and not frequent, SMF Batteries are a good option. For longer and frequent power cuts, Tubular batteries are a good option. However there has to be good ventilation to enable the acid fumes to escape. Tubular batteries also occupy more space compared to SMF Batteries.

No. Car Batteries provide the necessary peak power during cranking / starting the car. The UPS needs continuous power delivery from the batteries which is possible only with the UPS Batteries.

Two UPS units are connected in such a way that they share the load between each other equally. When one UPS experiences a problem, then the other UPS takes on the full load. In this process, the load continues to be supported by the UPS so that it is always operational. This type of configuration is generally used with loads which are very critical.

Two UPS units are connected in such a way that one UPS takes on the entire load and the other UPS is idle. Should the first UPS face any problem, then the entire load gets transferred on to the second UPS. In this process, the load continues to be supported by the UPS so that it is always operational. This configuration is generally used when the load is very critical.

Isolation transformers are used either in the Input of the UPS or on the Output of the UPS. The Isolation transformer isolates the input mains and the UPS (if it is connected to the input). The isolation transformer isolated the output of the UPS and the load (if it is connected to the output). The isolation transformer protects the UPS if it is connected to the input of the UPS, or the load if the isolation is transformer is connected to the output of the UPS.

The UPS and Batteries should preferably be next to each other. A long distance between the UPS and Batteries will lead to a low performance of the UPS during normal and backup modes.

If the UPS does not deliver the required backup consistently when the power fails irrespective of the charging time, then the batteries may have reached its service life. The service team will verify if the charger is working well and if the batteries have reached its end of service life prior to suggesting replacement of batteries.

All the batteries of a battery bank should be of the same capacity, age and impedance. When a battery bank is new, all the batteries will age almost similarly as time progresses. When a few batteries are replaced with new batteries, then the battery bank will behave very erratically due to the varied age and impedance of the batteries leading to further failures. So, it is advisable to change all batteries at the same time or replace with batteries of the same age and impedance.

Increase in backup time can be achieved by increasing the capacity of the batteries. The capacity of the batteries will depend on the backup time and this has to be arrived at by an experienced and qualified sales / service personnel. Apart from the capacity of the batteries being increased, the UPS should also be able to charge the batteries and additional chargers may be required depending on the battery capacity.

No. All the batteries of the battery bank should be of the same rating or capacity (Ah).

The load may have increased beyond the intended capacity of the UPS. The ambient temperature may have increased beyond the suggested range. There may have been a short circuit on the load.

No. All the batteries of the battery bank should be of the same rating or capacity (Ah).

You can call the nearest service center based on your location. E&C; has a regional service center at major state capitals and branch service centers at most cities. In addition, you can also call our help desk at the following number:

After the initial warranty, you can enter into an Annual Maintenance Contract (AMC) with E&C.; Annual Maintenance Contract entails you to get Preventive Maintenance Services during the contract as well as any failures will be attended to without any additional costs.

If your UPS is not under Warranty or AMC, in the event of a failure, E&C; will attend the problem based on your call. The Problem will be looked into and the parts required to rectify the problem will be discussed with you to get an approval or a work order. Once the work order is approved, the defect will be rectified.

Generators are used to generate AC power in the event of outage of AC Mains power. Most Generators run on Diesel and generate AC Power. There will be a time gap between the failure of AC Mains and before the Generator can start. During this time, any load (for example computers, or other electrical / electronic equipment) will shut down. To prevent this shut down, you can use your UPS to provide the required backup in the event of an AC mains failure.

Whether you need to replace with the same capacity of the UPS or a higher capacity, you can call E&C; to provide you with a quotation for the new UPS. E&C; will also provide you with an option to buy the old UPS and offer a proportional discount on your new UPS. This will remove all hassles to dispose or scrap your old UPS and benefit with a discount on the new UPS.

Batteries mainly contain lead and lead is very poisonous to the environment. Government Guidelines for dealing with Lead waste are very stringent. As a responsible citizen, you should dispose of the old batteries through an authorized recycler of lead as approved by the Government of India. To make the process free of hassles, E&C; will buy back the batteries from you at scrap value and offer a discount on the new batteries.

Please call our service center with your name and address, the model and the capacity of the UPS and the nature of the problem. The model and the capacity of the UPS can be found on the front or the top of the UPS.

The space depends on the capacity of the UPS and mainly on the backup time. More the backup time, more will be the space required for the storage of the batteries for a given capacity of the UPS. Tubular batteries will occupy more space compared to the SMF Batteries. Our Sales / Service Personnel will be able to provide the exact details.

Please call the Service Center of E&C; to get your UPS relocated. Please do not disconnect and reconnect the UPS on your own as it may lead to improper connections. The UPS and batteries deal with high voltages and currents and it may lead to dangerous and undesirable impact. We suggest that the relocation has to be done by authorized E&C; service personnel.

Normally refrigerators and Air Conditioners are not recommended to be connected to a UPS due to their high starting currents, which the UPS will not support and lead to tripping. Even laser printers are not recommended to be used with a UPS unless the UPS is sized to take up such high starting currents.