Making Water flow from the Sun

ROTOSOL: Optimum Solar Pumping solutions by ROTOMAG

The ROTOSOL Advantage

1. Technology : Ultra High efficiency BLDC & PMDC motors

2. Experience : 15 years in solar pumping

3. Capacity : 50,000 units of surface & submersible pumps/year

4. Support : 200+ Service Partners

5. Goal : High Quality Solar Pumping Installations

Technology: Why BLDC is better ?

Eff2 Eff1 IE2 IE3 PMDC BLDC74%

76%

78%

80%

82%

84%

86%

88%

90%

92%

Efficiency comparison of AC & DC motors

* AC motor efficiency is as per IS:12615 for 3 HP 4P motor

Premium efficiency- Atleast 10% higher

Rotomag DC Submersible

Leading AC Submersible

• Height : 1120 mm

• Total Weight : 52 Kgs

• Difficult to handle

• Susceptible to damage

• Efficiency : 81% (EFF2)

• 96,000 LPD @ 30 M

• Height : 740 mm

• Total Weight : 18 Kgs

• Easy to handle and install

• 300% higher torque to weight ratio

• Efficiency: 92%

• 105,000 LPD @ 30 M

Physical comparison of AC and DC pumps

70% lower weight, 50% lower temperature, 300% higher weight to torque ratio

Early Start

• DC pumps use power directly from modules• Start at low irradiance levels• Inverting DC to AC causes losses• DC pumps start early and work till late

Higher Starting Torque- reduced chances of clogging of pump in muddy/sandy water

• Starting torque in AC motors is 2 times the rated torque

• Starting torque in BLDC/PMDC is 5-6 times

• AC pumps will stall in sandy/muddy water

• DC pumps have sufficient reserve torque to clear the debris

Advantage of BLDC over AC

AC Motors

Rotomag BLDC Motor

• Exposed Windings• Sand and water ingress cause damage• Weak insulation causing drop in

performance• Considerably reduced life

• Totally Encapsulated windings• No effect of debris or water on winding• Consistent performance• Long life

Fully encapsulated winding- cannot fail

Advantages of BLDC Technology

Sealed Rotor- Life time Guarantee. 200% higher torque for operation in sandy/muddy water

AC Motor

Rotomag BLDC Motor

• Steel Laminations with AL rotor• Susceptible to oxidation due to

moisture• Heavy construction• Higher moment of inertia • Late start early stop• Drop in performance over time

• SS Shaft with rare earth magnets• No effect of moisture• Life long guarantee of performance• Lower weight – lower moment of

inertia• Early start late stop

Long Life Bearings. No replacement for 5 years

AC Motor

Rotomag BLDC Motor

• Standard ball bearings used• No Dampening of axial thrust• Axial thrust causes damage • Reduced efficiency• Higher noise and vibration• Contamination due to debris • Reduced water discharge once

damaged

• Ceramic Carbon Thrust bearings used• Effective dampening of axial thrust• Lower noise and vibration• Increased efficiency• Higher resistance to contamination• Higher MTBF• Consistent performance

Dedicated to Solar pumping for 15 years:

How does it help ?

Vast exposure enables us to build different pumping solutions

1999 2002 2007 2011 2013 2014

Development and installation of 1 HP Surface pumps

Installation of 2 HP Surface pumps 4500 Nos

Introduction of motors for export and JV for AC motors

Development of BLDC submersible pumps begins

BLDC pumps developed and approved by EQDC

2000 Surface pumps and 250 Submersible pumps installed

Rotomag’s journey in solar pumping

Designed for 10 years

Top Quality SS components. Premium quality parts

Example: Submersible pumpsRange : 1 – 5 HP Head : 100 meters• High efficiency BLDC motor• Encapsulated winding with Thermal protection• SS 304 parts for long life and corrosion resistance• Laser welded impellers for high discharge• Thrust bearing ensures dampening of axial forces• Compact and light weight• Made in India – servicing and repairs possible

Ability to withstand tough usage

• IP 65 protection

• Problem conditions shown with LED’s

Sensorless dry running protection

• 250C IGBT’s used as power stage

• Overvoltage/Thermal overload protection

• To be tested as per IEC 60068-2*

Designed for extreme conditions and user ignorance

Example: BLDC controllers

Products suited for Rural India

Example: Surface pumpsRange : 1, 2 & 3 HP Head : 25 meters

• Simple 2 wire design. No controller required

• Easy to install and maintain

• High Discharge suitable for flood irrigation

• Designed for harsh Indian conditions

• More than 5000 pumps installed till date

Fail proof, no electronics

Improper foundation Pump without foundation

Poor Installation of pump Pump stuck in ground

Installations and End user training are the key

Capacity: Can we meet the market demand?

Infrastructure

Two plants: 1.6 lacs sq feet built up factory area

Capacity : 28000 motors & 5000 pumps/month

Semi Automatic production lines

Sophisticated test equipment

Factory capacity: 50 K pumps per year

Manufacturing capability

Monthly Production Capacity :

PMDC Motors : 8,000 unitsAC motors & Geared motors : 20,000 unitsSurface pumps : 2,000 unitsSubmersible pumps : 3,000 units

World Class processes

Inhouse R & D and quality assurance

Pump testing set up

Automatic testing and plotting of pump performance curves

Solar PV simulator for automatic computation of water output/day

Sophisticated testing facilities for Solar pumps

Global reach of Rotomag products

Rotomag’s export markets

Germany, Switzerland,UK,

Italy, Poland, Norway, NL

USA, Mexico Canada

Brazil, Columbia

Bangladesh, China,

Srilanka, Yemen

Over 70% of export revenue comes from Germany, Switzerland & USA

Quality validated by TOP European customers

Support: Being close to the users

Training and Service support

• Total 200 Sales cum installation and service partners to be appointed

• Regular training being provided to partners for quality installations

• Standard work instructions and training manuals provided

• Field service centers appointed to attend complaints in villages & towns

• Master service centers appointed in major cities for repair / replacement of faulty parts

• Inhouse dedicated team for audit and supervision of installations

Professional and prompt after sales support

Sales and Service NetworkExtensive Service Coverage

‘Jalmitra’ sales cum support partners

Support Partner Training Programme

Regular training programmes being conducted to qualify ‘Jalmitras’.

Equipping ‘Jalmitras’ to solve problems

Installations: Precise, Standardized and built to last

Standardised installation process•Determine the source & depth of Water•Mark the location of PV Array•Calculate the water requirement and system suitability with micro irrigation system •Ensure that chosen pump and array combination is suitable for the site• Take site pictures for record

Site Survey

• Schedule material supply based on the site availability• Ensure proper packing and send material to the site with appropriate checklist•Confirm material receipt at site and verify that all components are availableMaterial Supply

• Schedule installation based on the availability of resources & site• Lay foundations and do the erection of structure as per WI• Take appropriate pictures during various stages of installation• Let the foundation cure for 3 days before mounting the PV modules• After 3 days, mount the modules and connect the array as per WI • Lower the pump in the bore and do the necessary connections as per WI

System Installation

•Check pump operation and ensure all the functions are operating normally•Check structure rigidity and alignment•Check the all the connections and ensure there are no open joints• Connect the pumping system to micro irrigation system and record the output • Incase of flood irrigation record water output by filling a standard container• Take site pictures for records

Site Audit

•Conduct a training program for the beneficiary to explain the basic operation and features of the pumping system.

•Explain the do’s and don’ts to ensure trouble free operation•Give information about warranty & service policy•Hand over the instruction manuals and details of local field service center•Complete the audit checklist and take final pictures of the site with the beneficiary

Training & Handover

High Quality Installations

long

Starting point for a lifelong relationship

High Quality Installations

Water that will change their lives