EMSC Asia Pacific Pty Limited provides voltage optimisation systems that can lead to energy savings of up to 50-95% depending on the electrical load. Their clients include government buildings and universities. Voltage optimisation works by inducing negative power feedback to the source, effectively generating power from the load side. Case studies show typical savings of 10-20% with payback periods of less than 4 years.

1. EMSC Asia Pacific Pty Limited
17-33 Milton Parade, Malvern, VIC 3144

4. What we do...
A market leading range of voltage optimisation systems
Sell solutions – not boxes
Engineering led business
Fully supportive, turnkey solution

5. Our clients include…

6. Powerstar provides the main power
Palace of Westminster Welsh Assembly London City Hall
House of Keys-Isle of Man All Cabinet Office Buildings Western Australia Parliament

7. Why Voltage Optimisation?
Voltage optimisation is
needed to purely correct
supply issues caused
by the HV infrastructure

8. What does voltage optimisation do?

9. What is Voltage Optimisation?

10. Why is
voltage
optimisation
important?

11. Patented design
Powerstar is the only VO system
with a patent on its design
A uniquely designed
triple-wound optimiser
Star configuration to eliminate
harmonics
Delta configuration to further
suppress harmonics

12. 70% of the savings come from the
negative voltage feedback and
30% from equipment efficiency
improvements.
BACK EMF
This creates negative power which goes towards the supply and reduces the electrical
consumption of the site.

13. Savings with Voltage Optimisation completely depends on the load
the company has and therefore a full site survey is essential.
“Powerstar voltage optimisation can lead to energy savings.
The overall power consumption is reduced because the negative
power is induced as feedback power to the source. Virtually, this
power can be considered as power ‘generated’ from the load side”
Professor Jihong Wang. University of Warwick, UK
WHAT THE UNIVERSITIES SAY
The report from the University of Warwick into voltage optimisation
concluded:

14. Why is it important to optimise site voltage?
Worsening Power quality issues, including:
Transients
Harmonics
Phase imbalance
Poor power factor
A number of these issues (harmonics, transients) are significantly on the
increase mainly due to energy efficiency and renewables.

15. Optimising voltage and affects on harmonics
Improves Harmonics
The graph below shows the Harmonic Levels before and after VO installation.

16. How does Voltage Optimisation help?
Reduces kWh Consumption

17. Will everything consume less energy?
NO not everything …
Greatest savings come from inductive loads (Motors, Lighting)
Some loads will yield less savings (VSDs)
Some loads will yield zero savings, but will benefit in other ways
It is important to understand the electrical loading characteristics of your site.
Remember no two sites are the same

18. - 50%
- 70%
- 90-95%
Savings of 3 Phase 30kW Motor with Powerstar for US & UK Supply
No Load
Lightly Loaded
Heavy Loaded
0
5
10
15
20
25
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0
Voltage Reduction (%)
EnergySavings(%)
US Supply UK Supply
Tap 2 Tap 3 Tap 4
Savings of a 3 Phase 30kW Motor with PowerStar for Australia & US Supply

19. Real Time Monitoring
The Powerstar HMI (Human Machine Interface) can be viewed online and/or through an internal network
and is IP addressable. In addition the system stores the following information every ten minutes and has a
huge storage capacity:
Display of energy savings
Current per phase
kVA per phase
Total kVA
kWh per phase
Total kWh
Voltage per phase
KVAr per phase
Power Factor per phase
Harmonics (both Voltage and Current)

20. Optimise at HV or LV side

21. Installation
Text

22. Do you own your HV/LV Transformer?
The choice should be clear. The reason you want to optimise is to remove the
problems created by the HV infrastructure
Unless your HV/LV distribution transformer is brand new, correct the issues at
source. Optimise the voltage at the HV supply. Simply replacing the existing,
inefficient HV/LV transformer with the super low loss Powerstar HV MAX.
Losses within a
Standard HV/LV
Transformer

23. Powerstar HV MAX Savings
Text

24. Warranty & Guarantee
Powerstar comes with up to 15 years warranty
Our warranty includes parts and labour
We guarantee the minimum savings as per our proposal
If minimum savings are not achieved we will provide payment to
compensate for the difference between your actual savings and the
guaranteed savings
You have nothing to lose as your payback is always guaranteed

25. Case studies
and
testimonials

26. Mondelez
2 x 1000kVA Installed
Savings - 12 percent

27. Palais Hotel
Savings on electricity consumption: 10.5%
Electricity savings per annum: $13,500
Estimated payback period: Under 3 years
“We are more than happy and pleased we made this
investment. We are also glad we are making a contribution
in the responsible use of Palais Hotel power.
You can see the Powerstar system is built with long-life
materials, so are happy with the quality of the unit.
I have seen enough evidence to know that this is wise
investment that we expect to pay for itself within three
years. “
Bob Karpluk, General Manager, Palais Hotel

28. Swire Cold Storage
The issue facing Swire was how to squeeze
more efficiency and cost savings from a site
that was already energy efficient.
As a result of the site analysis a 1000kVA
Powerstar unit was installed.
This provided a 20v reduction, dropping the
voltage from an average 248v to 223v and
resulting in a
13% saving on annual electricity
consumption, as well as a reduction in
CO2 emissions of 490 tonnes.

29. ASDA Supermarkets
Mark Orpin, Head of Energy Management,
ASDA Supermarkets
“Powerstar voltage optimisation has been a major
part of our comprehensive energy efficiency
programme.
It is perhaps the simplest and most effective way
to instantly save energy and therefore we would
highly recommend Powerstar systems.”

31. NHS – Ashworth Hospital
The hospital were looking for a reliable system to
effectively reduce high energy costs and consumption
caused by lighting, plant & IT equipment in the hospital.
Following the installation of four Powerstar units
the hospital is benefiting from the following
savings:
• Savings (kWh) 458,272
• % Savings 12%
• Annual savings £51,213
• Payback period 3 years

32. Charles F Stead
Charles F Stead is one of the most respected tanners of suede leather worldwide
Post install, electrical equipment at Charles F Stead is running more efficiently and impressive
savings have been achieved.
Year on year savings present a 20.74% kWh energy reduction.

33. London City Hall
Text
% Savings: 13.6%
Home of the Greater London Authority accommodates the Mayor of
London, the London Assembly and 600 or so permanent GLA employees

34. “We have been very pleased with the quality and
workmanship from the team at EMSc (UK) Ltd – the
energy savings have been higher than forecast and
we are expecting to run a phase 2.
EMSc have been very flexible in scoping, design
and working around our operational units to ensure
full services were maintained. I have no hesitation
in recommending Voltage Optimisation (Powerstar)
from EMSc (UK) Ltd and we are pleased with the
full service EMSc provided.”
Stuart Harris, Head of Energy and Carbon Operations, BT Technology Service & Operations

35. RWE npower
“We arranged a test of the Powerstar unit, utilising a 3rd party company to measure the claims of EMSc (UK) Ltd against one of
our buildings. The tests were carried out over a 6 week period and during that time EMS Powerstar’s estimated savings were
not only met but surpassed. We also measured the harmonics and power factor and again they surpassed expectations. We
now have Powerstar installed across the majority of our larger office portfolio and are showing savings every day.
One other thing for me was the working relationship and technical advice that we received from EMS Powerstar. Both myself
and the company I used to collect and analyse the test data thought EMS Powerstar an excellent company to work with,
providing clear and prompt advice on savings, installations and recommendations.
The icing on the cake was the fact the equipment was all UK manufactured and it was custom built for our older sites which
had restricted space in our distribution rooms. We have also looked at EMS Powerstar’s domestic systems which potentially
could help many of our customers reduce their energy bills.
Dave Horton, RWE npower, Sustainability and Capital Investments Manager
Powerstar are npower and EON selected partners.

36. “North Melbourne electrical contractor Corospark Electrical & Solar has
impressed the judges of this year’s Master Electricians Australian (MEA) VIC
Excellence Awards, taking out the coveted prize as Commercial Project of
the Year for their Voltage Optimisation project at The University of
Melbourne.”

37. THE UNIVERSITY OF MELBOURNE
POWERSTAR VOLTAGE OPTIMISATION CASE STUDY
LAW BUILDING Grattan Street, Parkville, Victoria 3010
Actual Savings Achieved 12%
Annual Consumption reduced by 225,664 kWh
Guaranteed Saving 10.1%
RegressionAnalysisdoneover90days
Payback period under 4 years

38. THE UNIVERSITY OF MELBOURNE
POWERSTAR VOLTAGE OPTIMISATION CASE STUDY
LAW BUILDING Grattan Street, Parkville, Victoria 3010
RegressionAnalysisdoneover90days

39. Law building
THE UNIVERSITY OF MELBOURNE
POWERSTAR VOLTAGE OPTIMISATION CASE STUDY
SPOT BUILDING, Parkville, Victoria 3010
Actual Savings Achieved 22.9%
Annual Consumption reduced by 288,187 kWh
Guaranteed Saving 10.5%
RegressionAnalysisdoneover90days
Payback period 3 years

40. THE UNIVERSITY OF MELBOURNE
POWERSTAR VOLTAGE OPTIMISATION CASE STUDY
SPOT BUILDING, Parkville, Victoria 3010
Actual raw
consumption data
show 25.9%
energy reduction
before regression
analysis

41. Can we help?
YES, we can…
If you are not sure what to do to reduce your energy
consumption, contact us and we can organise a free
no-obligation proposal.
Tel: 1300 659 463
Email: sales@emscap.com.au
Website: www.emscap.com.au

42. Tel: 1300 659 463
EMSC Asia Pacific Pty Limited
17-33 Milton Parade, Malvern, VIC 3144