A Guide to VoltAGe optimisAtion systems - GW Energygwenergy.co.uk/wp-content/uploads/2016/09/BEAMA-VOLTAGE... · 2016. 9. 13. · introduCtion . t. A Guide to VoltAGe optimisAtion

Bringingpower to life.

A Guide to VoltAGeoptimisAtion systemsdesigned specifically for energy efficiency

C OMPAN IES IN VOLV ED IN T H EPREPARAT ION OF T H IS GUIDE

MADE IN SHEFFIELD BY

We also recognise the input into this G uide from The C arbon Trust

ghebdigeTypewritten TextGW Energy LimitedECO-MAX WorksOrgreave RoadSheffieldS13 9LQ

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Contents

TERMS AND DEFINITIONS 4

INTRODUCTION 5

1 WHAT IS VOLTAGE MANAGEMENT? 6

2 WHAT IS VOLTAGE OPTIMISATION? 7

2.1 WHY MIGHT MY SUPPLY VOLTAGE BE HIGHER THAN NECESSARY? 8

2.2 HOW DOES VOLTAGE OPTIMISATION WORK 9

2.3 SAFETY WARNING – VOLTAGE OPTIMISATION IS NOT SIMPLY REDUCING VOLTAGE 9

3 TECHNICAL SPECIFICATIONS 10

3.1 CONSIDERATIONS 10

3.2 DESIGN AND MANUFACTURE 10

3.3 PRODUCT ENCLOSURES 10

3.4 NAMEPLATE 10

3.5 NON HAZARDOUS MATERIALS 10

4 UNDERSTANDING THE LOAD 11

4.1 VOLTAGE DEPENDENT 11

4.2 WHAT TYPE OF EQUIPMENT IS VOLTAGE DEPENDENT 12

4.3 EVALUATING THE POTENTIAL FOR VOLTAGE OPTIMISATION 14

4.4 QUANTIFYING RESULTS 14

5 TYPES OF VOLTAGE OPTIMISATION EQUIPMENT 15

5.1 STATIC VOLTAGE OPTIMISATION SYSTEM 15

5.2 DYNAMIC VOLTAGE OPTIMISATION SYSTEM 16

5.3 DYNAMIC VOLTAGE OPTIMISATION SYSTEM WITH STABILISED OUTPUT VOLTAGE 17

5.4 SYSTEM FEATURES 18

6 INSTALLATION AND SITE TESTING 19

NORMATIVE REFERENCES 19

04 A Guide to VoltAGe optimisAtion systems

terms And definitions

Voltage Optimisation System

Optimisation Bypass

System Bypass

Domestic Property

Non-Domestic Property

Static Voltage Optimisation System

Dynamic Voltage Optimisation System

Dynamic Voltage Optimisation System with

Stabilised Output Voltage

Grid Voltage

System voltage

Equipment designed to reduce the system voltage within aDomestic Property or a Non-Domestic Property in order toreduce energy consumption, excluding IsolatingTransformers.

A mechanism for disconnecting the Voltage Optimisationfunction with no interruption to the existing electrical supply

A mechanism for electrically disconnecting and isolating theVoltage Optimisation Unit from the electrical circuit andreconnecting the electrical supply

A self-contained unit designed to accommodate a singlehousehold excluding buildings containing exclusively roomsfor residential purposes such as nursing homes, studentaccommodation or similar.

A site or property that is not a Domestic site or property

A system that delivers a fixed percentage reduction in voltageand whose output can be adjusted only when electricallyisolated.

A system whose output can be adjusted without interruptionto the load.

A system whose output can be adjusted to an agreed setoutput voltage without interruption to the load

Upstream of Voltage Optimisation System

Downstream of Voltage Optimisation System

introduCtion

A Guide to VoltAGe optimisAtion systems 05

BEAMA is the leading trade associationthat represents manufacturers ofelectrical infrastructure products andsystems from transmission throughdistribution to the environmentalsystems and services in the builtenvironment.

We work with our members to ensuretheir interests are well represented inthe relevant political, regulatory andstandardisation issues at UK, EU &international levels and our vision isthat member products provide asustainable, safe, efficient and secureUK electrical system.

There’s a lot going on in the electricalindustry that involves the infrastructureof the electrical network fromgeneration, transmission to the pointof use.

The government is signed up toreductions in carbon emissions andneeds solutions. We’ve seen theintroduction of a host of new renewableenergy sources, the roll out of smartmeters, more sophisticated energycontrol and the move towards theconnected homes environment.

With a host of new products andtechnologies introduced to meet thedemand for energy management andcontrol, it is important that the quality ofenergy supplied is maintained and forthis reason BEAMA has set up a PowerQuality Group which looks at productsectors like Power Factor Correction,Voltage Optimisation, HarmonicConditioning and Surge Suppression.

These product areas are also part of thesolution for providing improved energyefficiency in domestic, commercial andindustrial markets and, as the moresophisticated electrical infrastructuretakes shape, will play an increasinglyimportant role.

Take for example the area ofVoltage Optimisation.

In the UK the declared electricity supplyis now 230V with a tolerance of +10% to-6%. This means that the supply voltagecan theoretically vary from 216.2V to253V. Voltage Optimisation is anelectrical energy saving technique thatis installed in series with the electricitysupply to provide a reduced supplyvoltage for the site's equipment.

In some units Voltage Optimisation canimprove power quality by balancingphase voltages and filtering harmonicsand transients from the supply.

By efficiently bringing supply voltages tothe lower end of the statutory voltagerange, voltage optimisation technologycould yield average energy savings ofaround 13%.

BEAMA is working with its’ VoltageOptimisation members to illustratewhere the best results for theseproducts can be achieved and how theyform another element of the biggerenergy efficiency picture.

This Guide is a collaborative documentbetween the leading UK manufacturersof Voltage Optimisation products. It isdesigned to show the best practice indetermining the design, manufacture,assembly, installation, maintenance andservicing of Voltage OptimisationSystems for domestic properties andnon-domestic properties.

Whilst there is no recognised Standardfor Voltage Optimisation Equipment,the Normative References inAppendix A apply.

1WhAt is VoltAGemAnAGement?

Voltage management is an umbrellaterm covering various distincttechnologies, including voltageoptimisation, voltage stabilisation,voltage regulation or voltagereduction. In the context of thisdocument, we have used the term tomaintain an impartial position withregard to equipment selection.

If your site is being supplied withelectricity at a higher or lower voltagelevel than you need, you could haveoperational problems or be wastingenergy and money and be responsiblefor greater emissions than necessary.This is where voltage managementcan help.

The basic principal of all voltagemanagement equipment is to changethe voltage level from that of theincoming grid supply to obtain the

desired level. This may be to correct forsituations such as over-voltage,under-voltage or phase imbalances.

There are a number of technologiesavailable and various specifications ofvoltage management equipment.

One form of Voltage Managementspecifically designed for reducingenergy consumption is VoltageOptimisation.


2WhAt is VoltAGeoptimisAtion?

FIGUrE 1: TYPICAL VOLTAGE OPTIMISATION INSTALLATION


The basic principal of all voltageoptimisation equipment is to reducethe voltage level from that of theincoming grid voltage specifically togive energy savings. To achieve thischange in voltage level, a low voltage,series connected transformer isrequired. The design of the VoltageOptimiser is such that it only transformsthe amount of energy required tooptimise the voltage. This makes itinherently more efficient than anisolating transformer that transformsthe whole site load.

Electrical equipment can sometimesconsume more energy at highervoltages. Voltage Optimisationreduces the voltage of the electricitysupplied to equipment, minimisingconsumption while remaining within theoperating conditions specified by theequipment manufacturer.

Basic electrical laws mean thepower required by certain loads isproportional to the square of thevoltage. A supply voltage in excess ofthe nominal 400/230V may result inexcessive energy consumption – bythe equipment connected to thedistribution system.

HVIsolator

LVIsolator

HV to LVTransformer

DistributionSystem

HV Grid Voltage LV Grid Voltage OptimisedVoltage

VoltageOptimiser

Control System



FIGUrE 2: IMPACT OF HARMONISATION OF SUPPLY VOLTAGES ACROSS THE EU

2.1 Why might my supplyvoltage be higher thannecessary?

Until 1995, the statutory supplyspecification in the UK was 415/240V±6% (i.e. phase voltage (Vp) within therange 226-254V). The vast majority ofthe electrical distribution network hasbeen in place for many years and wasdesigned to deliver electricity within thisrange. There are many sites across theUK where the phase voltage is normallyin excess of 240V.

Historically the supply voltage inmainland Europe has been 380/220volts with a typical tolerance of ±6%.Steps to harmonise voltage levels weretaken in 1995 when the statutory supplyspecification in the UK changed to400/230V+10% -6%. This remains thecurrent UK position today.

To simplify the market for electricalequipment further, the European Unionhas introduced the Low Voltage

Directive (LVD) 2006/95/EC to regulatethe normal operating voltage ofelectrical equipment to be supplied inEurope. Equipment that meets thisstandard bears the CE mark and isdesigned to operate with a nominalsupply of 230V.

Electricity Quality and SupplyRegulations (EQS) will harmonisesupply voltages across Europe at400/230V±10%, i.e. Vp within the range207–253V. This means any piece ofequipment with the CE mark can besafely operated on the local electricitysupply anywhere in Europe.

Therefore in the UK, where supplyvoltages have historically been higher,equipment made for European marketsis often used at a higher voltage than itis nominal Design Voltage. As a resultthe equipment may be consumingmore energy than is necessary. Thefollowing diagram illustrates the pastand proposed voltage levels in the UKand the EU.

Historic arrangements (Pre 1995)UK 240V +or- 6% EU220V

variable tolerances

Planned harmonisedEQS all Europe supply

230V +or-10%

! 254V

207V 207V

UK 240V230V

226V

EU 220V

253V

UKEU


2.2 How does VoltageOptimisation work?

The theory of energy saving by VoltageOptimisation relies on simple electricalformulae, which provide a relationshipbetween electrical power consumptionand voltage for a constant resistance.

Power demand (kW) can be expressedas a function of voltage:

This means that for a simple linearresistive load the power consumed isproportional to the square of electricitysupply voltage. Therefore the higher thesupply voltage, the higher the energyconsumption. Equipment that displaysthis characteristic can be described as‘voltage dependent’.

With a simple linear resistive load, as arough ‘rule of thumb’ a one per centincrease in supply voltage will cause atwo per cent increase in power demand.

However, there are many different typesof electrical load and most are notsimple linear resistive. Modernelectronic control equipment such asthat used in Information & ComputerTechnology and high frequency & LEDlighting is designed to give a fixedoutput irrespective of the supplyvoltage. They can be considered‘voltage independent’.

Other loads, such as electric motors, arepartially voltage dependent. For a fixedspeed motor, the power demanded bythe load on the output shaft is oftenindependent of supply voltage, butsome of the losses which will resultfrom operating the motor inefficientlyare voltage dependent.

The change in power demand for a oneper cent change in supply voltage willtherefore be between zero andtheoretically two per cent. The exactproportion depends on the motorconstruction and its operatingconditions.

Electricity supply companies charge forthe energy supplied, measured inkilowatt-hours (kWh). This reflects thepower consumed (kW) and hours ofoperation:

To understand how much energy andcost you might save through voltageoptimisation, you need to understandwhat proportion of your electrical loadis voltage dependant, what proportion isvoltage independent and the number ofhours each type of load operates for.

The section “Understanding The Load”explains in more detail how to assesswhich category your equipment fallsinto.

2.3 Safety Warning – VoltageOptimisation is not simplyreducing voltage

Electrical equipment is designed tooperate with an electricity supply that iswithin the range specified on its nameplate. If the supply voltage is less ormore than specified, the equipmentmay not operate correctly and couldswitch itself off, with possible safetyimplications.

When changing electricity supplyvoltages across a site, you will need tomake sure that the supply is at anappropriate level. It shouldn’t be so lowthat your equipment is supplied with avoltage lower than its rating, nor so highthat you consume unnecessaryamounts of energy.

Some sites may still have olderequipment designed to operate on aGrid supply voltage of 415/240V ±6%.This will need to be identified and takeninto account in any VoltageOptimisation project.


When ChAnGinGeleCtriCity supplyVoltAGes ACross Asite, you Will needto mAke sure thAtthe supply is At AnAppropriAte leVel.

Power =Voltage2

Resistance

Energy = Power x Time

3teChniCAlrequirements

3.1 Considerations

A Voltage Optimisation System is designed for use in either a Domestic Property orNon-Domestic Property.

3.2 design and manufacture

The design, manufacture, and assembly of a Voltage Optimisation System should bein accordance with BS EN ISO 9001:2008 and BS EN ISO 14001:2004.

3.3 product enclosures

A Voltage Optimisation System shall comply with BS EN 61439-1:2011, Section 8.

3.4 nameplate

The nameplate of a Voltage Optimisation System shall comply with BS EN 60076-11:2004, Section 7.1 and BS EN 61439-1:2011, Sections 5 and 6.1 with the additionof a unique serial number or batch number.

3.5 non-hazardous materials

A Voltage Optimisation System shall comply with the relevant national regulations,legislation, and rules applicable to where the Voltage Optimisation System will beinstalled.


4understAndinGthe loAd


To determine whether VoltageOptimisation could reduce yourenergy consumption, you will needto understand how much of theelectrical equipment at your site isvoltage dependent, and whatproportion of your energy consumption that represents.

If a high proportion of electrical energyat your site is consumed by equipmentwhere the power demand is to somedegree voltage dependent, VoltageOptimisation should reduce yourconsumption. But if your electricalconsumption is mainly made up ofvoltage independent loads, you’re notlikely to be able to save much energythrough Voltage Optimisation. However,operating the equipment close to itsfundamental design value may maintainthe life expectancy in line withmanufactures expectations.

It can be difficult to tell whether or not aspecific item of electrical equipment isvoltage dependent and close inspectionwill usually be needed. However, thefollowing guidance should help.

4.1 Voltage Dependent

A voltage dependent load is an electricaldevice whose energy consumptionvaries with the voltage being suppliedto it.

To help assess the potential for VoltageOptimisation we need to categoriseelectrical equipment as either voltagedependent or voltage independent.These two groups are illustrated below.



Fluorescent lamps –electronic ballast (also knownas high frequency)

NO – Modern fluorescent ballasts are electronicallycontrolled to provide voltage at a higher than suppliedfrequency. This leads to improved efficiency in theproduction of light but also means they are voltageindependent 1.

LED lamps - with IntegratedCircuit based Driver

NO – Newer LEDs using IC based Drivers have thesame power demand, regardless of supply voltage, soenergy consumed does not vary with voltage.

4.2 What type of equipment is voltage dependent?

Load Type Are they voltage dependent?

GLS Halogen energy

saving lamps

YES – GLS Halogen lamps including the energy saving typesalso use filament technology like the old incandescent lampswhere an electrical current runs through the filament thatemits visible light. Halogen lamps run at a higher temperaturemaking them more efficient than traditional lamps are. Theseare voltage dependent loads. Reducing the supply voltage tothese lamps will result in a directly proportional reduction inpower consumption. However, lower voltage and power willreduce the light slightly. Rated light output is achieved within±3% of 230V design voltage

Fluorescent lamps –

inductive ballast (also known

as switch start)

YES – An electrical ballast is required to strike (ignite)a fluorescent lamp. In older types an inductive (ormagnetic) ballast is used. Simple magnetic ballastsprovide an unregulated supply to the lamp withinductive and resistive impedance. In this arrangementthe power consumed is proportional to the suppliedvoltage. However, lower voltage and power mayreduce the light output. Rated light output is achievedwithin ±3% of 230V design voltage.

Metal Halide / SON lamps YES – These types of lamps typically use an inductiveor magnetic ballast in which case they are voltagedependent. The lighting supplier should be contactedto decide the type of ballasts you have and todetermine their voltage dependency.

1 Electronic ballasts are usually classified into those with either “passive” or “active” front ends. Those with passive front ends use discrete electronic componentswhilst those with active front ends use integrated circuits. In either case the process of conversion from mains frequency to a higher frequency result in the powerdemand being voltage independent.


Load Type Are they voltage dependent?

Motor loads controlled byvariable speed drive (VSD)

NO – No additional energy savings are possiblethrough the reduction of supply voltage.

Electronic loads andinformation and computertechnology (ICT)

NO – Most electronic (i.e. low power) equipment is designedfor world markets. For example computer power supplies,mobile phone chargers and office equipment can accepta wide range of input voltages while operating with fixedDC voltages. The majority of electronic equipment relies onregulated power supplies, which consume similar amountsof energy over a wide range of input voltages. The potentialenergy savings by reducing the applied voltage are thereforesmall to negligible.

Process loads POSSIBLY – Process loads are generally electronicallycontrolled to ensure that processes operate correctly. Mostof the energy consumed in process plants will usually be bymotors and heating. The potential for energy savingsthrough voltage management is therefore dependent onhow loads are controlled. You will need to seek specialistadvice to assess the likely benefits of reducing the voltageapplied to process loads.

Electric heating PROBABLY NOT – Electric heating is a resistive load and assuch a higher supply voltage will result in an increase inpower demand.

However, the method of control is critical to whetherenergy consumption increases with higher voltages. Wheretemperature controllers, such as thermostats, are installedand are set correctly, energy consumption will not changewith an increased supply voltage. Instead instantaneouspower demand will be higher and heaters will warm upquicker.

Motor loads (Uncontrolled) YES, IN MANY CASES – Most motors in use today areasynchronous induction motors. Large (>20kW) inductionmotors have low losses. When operating within 70-90 percent of their rated output they are very efficient (as high as95 per cent), and are effectively voltage independent.

However, this is an ideal position. Most motors in use todayare of a smaller rating and have higher losses making themless efficient. Many of these motors are oversized for theirapplication and often operate for all or much of the time atpartial load, which leads to increased losses. It is theselosses which lead to a larger proportion of a motor’s powerdemand being voltage dependent.

If motor loads form a significant part of your total site load,you should complete a detailed technical evaluation intothe savings potential.

It should be borne in mind that operating the equipment close to its fundamental design value may maintain the lifeexpectancy in line with manufactures expectations.



4.4 Quantifying Results

Measuring and quantifying the results of Voltage Optimisationcan be very difficult with dynamic loads. You cannot simplycompare last month’s bill without the Voltage Optimiser, withthis month’s bill with the Voltage Optimiser, as this does nottake the variables into account.

Generally there are two methods for establishing the savingspercentages:

The simplest option is for you to evaluate three month’sworth of half hour data from before and after the installationof Voltage Optimisation whilst considering whether the siteloading has changed. For example, you may have installed orremoved equipment, changed your operating hours orexperienced an increase in production levels; even theweather or other external influences may affect your electricalconsumption. All these need to be considered when assessingthe savings.

Another method would be to use a standard Measurement &Verification Protocol, to perform "on-off" tests undercomparable load conditions and measure the differential inKW and/or kWh consumption between the connectedequipment when supplied via grid voltage and optimised voltage respectively. Repeating this a number of times over agiven period will provide “snap shot” comparisons ofconsumption with and without Voltage Optimisation. Theaverage difference between the two figures is the percentagereduction in energy consumption, which can be used toextrapolate the savings over a year. To measure the savings inthis way would ideally require a dynamic Voltage Optimiserwhich can “seamlessly” switch between the optimised voltage(Savings Mode) and grid voltage (Optimisation Bypass) underload conditions without interrupting the power to theconnected equipment.

In practical terms a combination of both the above may beused, but the key is to agree the method employed with theVoltage Optimisation supplier in advance.

Measure voltageand power

Measure voltage dropsacross the site

A

Determine the proportionof energy consumptionthat is voltage dependent

C

B

Identify any critical loads D

Calculate potentialenergy savings E

Decide power ratingof Voltage Optimisationequipment

F

steps for the survey are:

4.3 Evaluating the potential for voltage management

To find out whether you can save energy from Voltage Optimisationsystems, a site survey should be carried out and the potentialenergy savings calculated. A suitably qualified electrical engineershould be appointed to carry out any measurements and loadassessment on the electrical infrastructure.

5types of VoltAGeoptimisAtion equipment

5.1 Static Voltage Optimisation System

A Static Voltage Optimisation System is one that delivers a fixed percentagereduction in voltage and whose output can be adjusted only when electricallyisolated. Fluctuations in grid voltage will be mirrored in the optimised voltage.


FIGUrE 3: RESULT OF STATIC VOLTAGE OPTIMISATION WITH FIxED 8% REDUCTION

HVIsolator

LVIsolator

HV to LVTransformer

DistributionSystem


VoltageOptimiser

Control System

215

220

225

230

235

240

245

250

Volta

ge

Time

Grid Voltage

Op mised Voltage

Grid supply voltage & optimised system voltage

static Voltage optimisation



5.2 Dynamic Voltage Optimisation System

A Dynamic voltage Optimisation System is one whose outputcan be adjusted without interruption to the load. Typically thesystem offers a fixed reduction; fluctuations in grid voltage aremirrored in the optimised voltage whilst the grid voltage

remains above a predetermined level. Below thispredetermined level the Voltage Optimisation effect isbypassed to give the grid voltage without interrupting thesupply to the site. This feature provides a guaranteedminimum optimised voltage. In both instances, site load isconducted through the Voltage Optimisation unit.

HV to LVTransformer

HV Grid Voltage

VoltageOptimiser

LV Grid Voltage(VO remains electrically connected)

Control System

HVIsolator

LVIsolator

DistributionSystem


dynamic Voltage optimisation with optimisationBypass – shown in Bypass mode

FIGUrE 4: RESULT OF DYNAMIC VOLTAGE OPTIMISATION WITH A FIxED 8% REDUCTION AND SHOWING

PERIOD OF OPTIMISATION BYPASS

215

220

225

230

235

240

245

250

Voltag

e

Time

Grid Voltage

Optimised Voltage



5.3 Dynamic Voltage Optimisation System withStabilised Output Voltage

A Dynamic Voltage Optimisation System with StabilisedOutput Voltage is one whose output can be adjusted to anagreed set output voltage without interruption to the load.

Typically the system offers a variable reduction; fluctuationsin grid voltage are removed from the optimised voltage. Thisfeature provides a stabilised supply and a guaranteedminimum optimised voltage. In all instances, site load isconducted through the Voltage Optimisation unit.

HVIsolator

LVIsolator

HV to LVTransformer

DistributionSystem


VoltageOptimiser

Control System


dynamic Voltage optimisation system with stabilised output Voltage

FIGUrE 5: RESULT OF DYNAMIC VOLTAGE OPTIMISATION WITH A VARIABLE REDUCTION TO ACHIEVE A

STABLE OPTIMISED VOLTAGE

215

220

225

230

235

240

245

250

Vo

ltag

e

Time

Grid Voltage

System Bypass Voltage



5.4 System Features

Optimisation Bypass – a mechanism for disconnecting theVoltage Optimisation function with no interruption to theexisting electrical supply as shown in Figure 4.

System Bypass – a mechanism for electrically disconnectingand isolating the Voltage Optimisation Unit from the electricalcircuit and reconnecting the electrical supply. In all instances,the site load is conducted through the bypass mechanismwith the Voltage Optimisation unit being electrically isolatedin the bypass state.

Bypass

HV to LVTransformer

HV Grid Voltage

LVIsolator

Bypass

Bypass

VoltageOptimiser

Control System

LV Grid Voltage(VO electrically isolated)

HVIsolator

DistributionSystem


Voltage optimisation with system Bypass – shown in Bypass mode

Metering system – an option for most Voltage Optimi-sation systems is to have an in built Metering, Monitoring &Testing (MM&T) system. The specifications of such systemsmay vary, but they can offer a useful base for a site that doesnot yet have any MM & T facilities. Generally a system willdisplay real time information as well as giving access to

historical data through an inbuilt data logging system. Variouslevels of access to the data are available from a basic localdisplay to a web based dashboard type system. It is vital tounderstand the requirements for such a system and ensurethat it is correctly specified to the Voltage Optimisationsystem manufacturer.

FIGUrE 6: RESULT OF SYSTEM BYPASS

normAtiVe referenCes


BS 7671:2008 + A3: 2015

BS EN 61439-1:2011

BS EN 61439-2:2011

BS EN 61439-3:2011

BS EN 60076-11:2004

EN 60730-1:2000

EN 61000-6-1:2007

EN 61000-6-2:2007

European Community Directive 2006/95/EC

European Community Directive 2002/96/EC

BS EN ISO 9001:2008

BS EN ISO 14001:2004

The following referenced documents are indispensable for the application of this document. For dated references, the latestedition, including amendments, applies. For undated references, the latest edition of the referenced document including anyamendments applies.

Requirements for electrical installations. IET Wiring Regulations.Seventeenth edition.

Low-voltage switchgear and Controlgear assemblies.

Low-voltage switchgear and Controlgear assemblies.

Low-voltage switchgear and Controlgear assemblies.Distribution Boards intended to be operated by ordinarypersons (DBO).

Power transformers. Dry-type transformers.

Automatic electrical controls for household and similar use.

Electromagnetic compatibility (EMC). Generic standards.Immunity for residential, commercial and light-industrialenvironments.

Electromagnetic compatibility (EMC). Generic standards.Immunity for industrial environments.

The harmonisation of the laws of Member States relating toelectrical equipment designed for use within certain voltagelimits or local equivalent.

Waste electrical and electronic equipment (WEEE) or localequivalent.

Quality management systems.

Environmental management systems.

6instAllAtion And site testinG Product installation must be undertakenby a suitably qualified competentperson in line with the manufacturer’sinstructions and be in compliance withBS 7671:2008 +A3: 2015 and any otherapplicable local regulations.

Manufacturers of Voltage Optimisationequipment should provide anInstallation, Operation and MaintenanceManual that should include thefollowing detail as a minimum:

• Product description

• Product dimensions and weight

• Warning and safety guidance

• Mounting and location guidance

• Electrical connection guidance and when there is on site generation

• Guidance on environmental considerations, including airflow

• Product specifications, including details on Standards and Directives

• Commissioning guidance

• Operation of the Voltage Optimisation System

• Warranty information

• Servicing and routine maintenance guidance (where applicable)

• Technical support contact details

• Any consumables and spare parts required (if applicable)

For Domestic Properties, access tointernal components shall be limited totrained and competent persons utilisingthe appropriate means of access ortool(s).

For Non-Domestic Properties, access toVoltage Optimisation Systems shall belimited to competent persons utilising theappropriate means of access or tool(s)only, to prevent access by unauthorisedpersons. Barriers and enclosures shall beprovided as specified in BS EN 61439-1,Sections 8.4.6.2

Westminster Tower3 Albert EmbankmentLondon SE1 7SL

www.beama.org.uk

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A Guide to VoltAGe optimisAtion systems - GW Energygwenergy.co.uk/wp-content/uploads/2016/09/BEAMA-VOLTAGE... · 2016. 9. 13. · introduCtion . t. A Guide to VoltAGe optimisAtion