Friday, 11 October 2019



Calculating the power requirement and then determining the suitable rating of generator you need is called as Generator Sizing. This is the most important factor to consider before you decide to buy a generator.

The determining factor for generator sizing can be answered by considering the followings:
§  In the event of a power outage, should the generator run the entire building or just emergency loads? 
§  What will be the peak demands during summer months?
§  If you have Motors, Compressors etc, what will be your starting load?

After you have considered the above, you need to identify your electrical equipment (electrical load) and sum up their power requirements. This process is also called as Load Calculation. There are many free ‘Load Calculators’ available on the internet. You may take help from a certified electrician. If you are not sure, take help from our sales representatives, they will be happy to help – it is FREE for you!!


The genset should be located where it is accessible for maintenance and repair, and high enough to keep the generator safe if there is water logging during monsoon. There should be enough air flow to let the generator breath properly.

Factors like minimum distance from residential buildings, silence zone near hospitals, fire hazards etc. should be considered. Compliance with local guidelines is a must.


The most common fuel types for generators in India are Natural Gas and Diesel. Cost can be a factor when choosing between a diesel or natural gas generator. 

In case of natural gas, the availability of the fuel source is important. 
Local government regulations may dictate which fuel types are available to your area.


Only a competent, experienced and certified authority should do the installation.You may choose the right agency through your trusted referrals.

We have trained technicians to do this job. You may contact our representatives for more information, they will be happy to help you.


Before the generator arrives at your premises, a cement concrete foundation of adequate size should be made ready. An inadequate foundation may lead to excessive vibration resulting in poor performance of your generator.

Only a competent and experienced authority should make the foundation for your generator.You can consult our representatives for any support and guidance, they will be happy to help you.


Most generator manufacturer’s make generators with a standard sound attenuated enclosure (which reduces the sound level). The sound level will be around 74 db (to meet standard CPCB compliance).
Some area may have a regulation of minimum allowed decibel level. For example, places near hospitals, VIP zones, silent zone, airports etc. The target sound level will determine what type of generator enclosure you need to consider.
We also offer Super Silent (54 db) variants of generators to suite your needs.


A Diesel Generator or a Gas Generator needs maintenance. Unlike a car, generators are often neglected. To ensure that the generator runs during a power failure when you need it the most, proper maintenance routine should be followed. 

Every genset manufacturer will recommend a maintenance schedule and it must be done.
Most of the modern generators are electronically controlled. Maintenance is not restricted to only Oil, Coolant and Filter change. A maintenance DIY for these generators is not a good idea.
It is best to have a maintenance contract with the manufacturer.


Do you need a Transfer Switch?

If you want to power just one AC and few lights you may use a power cord connecting the generator and the appliances. For small generators powering small loads this is a common scenario, you do not need a Transfer Switch in such cases. 

When you have larger loads and your loads are connected to an existing power panel then you will need a Transfer Switch. The Transfer switch is the link between the power panel and the generator.

Will you use the generator only for emergency loads or for every load you have. This will determine the ampere rating and design of the Transfer Switch. You can choose a manual Transfer Switch or an Automatic Transfer Switch (costs more).


You may need some special features which does not come as a standard fitment with the generators.We offer Remote Monitoring System and Battery Charger as optional fitment.To run the generators in extreme cold weather you may need a Cold Starting arrangement.

We also provide fully customized solutions. For details, please get in touch with our representatives, they will be happy to help you.

NOTE: Powerol generator do not need additional cold starting kit. Our generators are engineered to run for every weather condition within India.


The standard warranty for generator systems typically ranges from two to five years.
It’s a good idea to understand the warranty duration and coverage of your generator and ask for upgrade costs if you prefer an increased coverage.

We offer special maintenance packages to suit your needs.To know more about our products visit us at or call us at 1800-419-1999 

Friday, 27 September 2019

SMART CONSUMER - Understanding The Earth, Neutral and Phase Points

When you call an electrician what does he check? How does he identify faults in your electricity supply lines? Do you have clear understanding of the Phase, Neutral and Earth points in the sockets of your house?

Well, we are not trying to teach you Electrical Engineering. As a consumer, it is smart to be aware of the electricity distribution from Power Plant to your house. It is also important to understand the Phase – Neutral – Earth points and what is their importance. 

Let us first understand the basic of domestic electricity supply chain.

Domestic electricity supply can be broadly divided into three categories:

       1. Generation
       2. Transmission
       3. Distribution

GENERATION: Generation happens in big power plants (Thermal, Hydro, Nuclear, Solar, Wind etc)

TRANSMISSION: Generated power is stepped up for ease of transmission. Power is transmitted via DELTA connection, (a Delta connections needs only 3 wires R-Y-B).

DISTRIBUTION: From the transmission lines the power is stepped down through local transformers and from the local transformer connection is distributed to individual houses. 

From the local transformers power is distributed to different houses as STAR connection which is having 4 wires. Three Phase wires and one Neutral wire. The Neutral point in the transformer is connected to the ground.

For domestic connections, the Neutral point is common, and any one phase (R, Y or B) is given as line to individual houses.

Understanding the Socket

According to electricity rules, the left point will be Neutral (N) and the right point will be Phase (P). The Earthing (E) point will be at the top. The earthing is used for safety purpose.

Point P should always have power, this can be checked by a Tester. The N point has no power in it, it cannot be checked with a Tester. To check the N point, a test lamp should be used.

What is the difference between Earth and Neutral?

Neutral is connected to the Neutral point of your local distribution transformer.
The Earth point is unique, made for your house only.

Why Earthing is important?

If earthing is not done, there will be chances of electrical shock in case there is some fault in the circuit.

No risk of electric shock if Earthing is done even if there is a fault in the circuit.

Mahindra Powerol deals in robust and fuel-efficient diesel and gas gensets ranging from 5kVA to 625 kVA. To know more about our products visit us at  or call us at 1800-419-1999

Monday, 16 September 2019

Reasons You Need a Backup Diesel Generator

Energy infrastructures across the world are under stress and this could lead to a sudden and unexpected power outage. While scheduled load shedding can be prepared for, the unexpected outages can delay production and even lead to massive losses. 

Here are some reasons your business will need a backup generator

           A) Secure information and data: -
               Consistent power supply is mandatory if you need sensitive data. Since diesel generators typically switch on within ten seconds of a power outage, a backup generator can save millions of man hours and money. 

      B)  Consistent power for productivity: -
                  In today’s scenario, no business can survive without power. Even an outage for a couple of hours can have devastating consequences. A back-up genset ensures that your operations are not disrupted in the case of power failures. 

          C) Damage to equipment: -
         Power interruptions can damage expensive equipment. A back-up system protects your assets and will save you replacement and maintenance costs in the long run. 

          D)  Easy to operate: -
                     Diesel gensets are comparatively easy to operate and trained personnel can keep them effective and productive. 

           E)  Natural Disasters: -
                 In case of a natural disaster, power supply is first affected. A backup generator will keep your unit running till regular power supply is restored. 

          F) Load Shedding: -
                   In certain areas, regular power cuts make it difficult for businesses to function efficiently. A diesel genset will ensure supply during hours of outage. 

          G) Availability of diesel: -
             Since diesel is not very expensive and easily available, diesel gensets are usually the best bet as backup power systems. 

   Mahindra Powerol deals in robust and fuel-efficient diesel and gas gensets ranging from 5kVA to 625 kVA. To know more about our products visit us at or call us at 1800-419-1999

Wednesday, 28 August 2019

Smart Consumer - Understanding Power Factor

Understand the ‘Power Factor’ of your AC Load

Are you facing problems like a generator tripping due to Over Current Alarm or excessive black smoke?
Have you been advised to reduce the electrical load to suit the capacity of your generator?

If you are using a generator in a Factory, at a construction site or for any other commercial purpose, you may have faced such a situation. Most likely, you did not hire any electrical consultant to evaluate your electrical load before buying the generator.

A poor Power Factor (PF) might be the reason for these kind of problems. Keep reading for a fundamental understanding of what is a power factor.

The Beer analogy is the most popular and easy way to understand the Power Factor.

In a glass of beer there will be beer and also few inches of foam. You are paying for per glass of beer, therefore more beer and less foam is better value for money.

Let us compare this glass of beer with electrical power.

Glass of Beer                      = Beer + Foam
Apparent Power               = True Power + Reactive Power

True Power (Beer) is the power which we actually use, but Apparent Power (Beer + Foam) is the power we pay for.

Power Factor (PF)                            = True Power (kW) / Apparent Power (kVA)

Apparent Power (kVA) x PF          = True Power (kW)

The value of Power Factor will be between 0 - 1.

A Power Factor of 1 is best, but practically very difficult to achieve. A higher Power Factor value is always better.

There are various types of electrical loads. Broadly electrical loads can be divided into following three types.

1.       Resistive Load
2.       Inductive Load
3.       Capacitive Load

Pure Resistive, Inductive or Capacitive loads are never present in practical application, it is always a combination of different types of loads. Each type of load has different impact on the PF. 

Bad Power Factor

Bad Power Factor means more Reactive Power (foam of Beer) which is useless. Bad Power Factor reduces the capacity of Electricity Board supply lines. There is a provision of Penalty fees by the Electricity Board for having bad (very low) PF in your Loads. For domestic use there is no such penalty.

Commonly there will be more Inductive Loads which negatively affects the Power Factor.

Inductive Load causes Lagging Power Factor

Inductive Loads tend to hold back the current and results in a Phase shift between the Voltage and the Current. 

Capacitive Loads causes Leading Power Factor

This is opposite to the Inductive Load. Capacitive load tends to hold back the voltage, causing a phase shift.

Rectifying Leading Power Factor :- 

If you have a leading power factor caused by high capacitive loads ,

- Add Inductive Load to the circuit.

Pure Resistive Load causes Unity Power Factor – THE BEST

Pure resistive loads have a PF value of 1. There will be no phase shift between the Voltage and Current.

It means the Voltage and Current (in AC circuits) will cross the 0 value together at the same time.

Benefits after improving Power Factor

1.       Increase in efficiency of system and devices
2.       Low Voltage Drop
3.       Can use optimized size of Power Cable which will give a cost benefit.
4.       An Increase in available power
5.       Appropriate Size of Generators.
6.       Eliminate the penalty of low power factor from the Electric Supply Company
7.       Saving in the power bill
8.       Better usage of power system, lines and generators etc.

For further guidance or information on diesel/gas gensets visit our website at or call us at 1-800-419-1999