Telecom Application

7/29/2019 Telecom Application

1/16

Totally Focused.Totally Independent.

Totally Committed toTelecom Applications


2/16

The PedigreeThere are several reasons why Mecc Alte is the

leading independent manuacturer o world-

class synchronous alternators. Here are just a

ew o them.

We only make one kind o product. Thats why

were always totally ocused on producing high

quality synchronous alternators.

Were totally independent. Thats why we

never complete with any o our customers in

the end market.

We believe in the power o partnerships. Thats

why we constantly, and consistently, aim to be

the most reliable partner or companies working

in the energy eld.

Were strategically ocused. Thats why we ofera single range rom 1 to 3000kVArom portable

alternators to machines or industrial use.

We do everything. From the design and

personalisation o our high quality products right

through to solutions to technical problems and

ater-sales assistance.

And we do everything ourselves. We have total

control o our sales and distribution and total

control over all o the components we use.

IntroductionAs the incessant demand or wireless communication

grows, o-grid telecommunication base station

sites continue to be introduced around the globe.

In rural or remote areas, where power rom the grid

is unavailable or unreliable, these cell sites require

generator sets to provide power securityas prime

power or backup standby power.

The power requirement or a base transceiver

station can vary upon location and load beingsupplied. Typically, an AC cell station load consists

o AC air-conditioning units, AC or DC lights, switch

mode power supplies to convert AC to DC and

battery banks.

The total cost o ownership (considering outlay,

serviceability, uel costs and eciency o these

power generation systems) is a major consideration

or operators. The type o system chosen, and its

eciency, can have a major impact on these costs.


3/16

Totally Focused

Totally Independent

Totally Determined to ForgePowerul Partnerships

Totally Committed to Strategic Innovation

Totally in Control o Production, Sales,Distribution & Components


4/16

Which Power Generation System?

Mecc Alte oers a ull range o power solutions or Telecom

applications developed rom our extensive experience, technical

expertise and excellence in the power generation market. With

hundreds o thousands o AC generators sold each year, our solutions

start rom the market-proven standard AC systems and run through

to state-othe-art variable speed and DC solutions or the more

advanced installations.

The Big Question


5/16

AC Energy Systems

The standard range o Mecc Alte 4 pole AC

alternators includes all the equipment needed to

provide the highest perormances requested by the

telecom applications. Using high quality materials

and advanced designs, they have market-leading

eciencies that will lead to uel savings. Whatsmore, the high motor starting capability o every

machine enables you to select a smaller generator

to cope with the same load application, ensuring

the most economical solution.

DC Energy Systems

Mecc Alte also has great experience in producing

Conventional Rotor Wound DC machines.

The conjunction o a conventional three or six phase

machine, with a special AVR controlling both the

Voltage and the maximum current resulting in arobust, compact and easy to use DC power solution.

Hybrid Mercurio Systems

Listening to the markets needs, we have

developed our Mercurio system which is a simple,

reliable, plug and play, exible and competitive

solution or the telecom market. The oundation o

the system is a dual ocus power converter. On one

side it embeds all the logic to control the gen set

when the DC battery set needs to be re-charged

as well as with the speed control. On the other it

accepts power inputs, rom any possible powersupply, including conventional and existing

Mecc Alte AC generators, Mecc Alte PMG Vispa

generator, Solar Panels, Small wind turbines and

power supply rom the grid as well.


6/16

Battery 2

BTS 1

BTS 2

Battery 1

AncillariesAC Air

conditioning

units

Lighting

& small

AC power

-48VDC

2 - 3 x SMPS

units, comprising

continuous &

standby duties

Distribution

Panel

Automatic

transfer

switch

Grid

power

supply

AC

generator

Traditional AC Energy Systems

Traditionally conventional AC diesel driven generating sets

are installed within the Base Transceiver Station to provide

site load. Within each base transceiver, AC power is used

to power air conditioning units to cool the electronics and

also the batteries. This AC power is converted by site base

rectifers to provide the DC power needed or the BTS loadand battery charging.

AC Alternator System

Mecc Alte AC alternators are a proven solution used in many

applications globally. Their high eciency and minimum

maintenance make them an ideal telecom power selection.

With an auxiliary winding system and low maintenance the

alternator is a compact and economical solution.

Air conditioning motors absorb high current rom the power

supply upon starting so the selected AC generator must

be able to deliver this peak start up demand, typically they

are oversized. As these AC generating sets are normally

sized based on these transient requirements o the air

conditioning units, a lower Xd value proportional to the

SMPS loads being applied is preerred. Load creates a

current distortion which then induces a resulting voltage

distortion rom the alternator. Again this is generally

minimised by machine selection and over sizing to cover thetransient load requirements.

The Mecc Alte brushless digitally regulated, AC Alternator

range is ideally suited to the demands o this telecom

application, with each alternator ftted as standard with

the ma_AUX auxiliary winding system it can provide

superior motor starting capabilities allowing up to 300%

overload or 20 seconds. With class leading low Xd (sub-

transient reactance) the alternators perormance with non

linear loads is enhanced. Thus, typically no over sizing is

needed allowing the generating set provider the most cost

eective package.


7/16

Alternator exploded view

High transient power or economic alternator selection.

Low reactance (Xd) values to enhance motor starting and

perormances with non-linear loads.

Volts/Hz characteristic underspeed protection voltage

reduces proportionally to rpm to limit excitation current.

rom a set threshold, to protect against over excitation

should the engine ail to reach ull speed.

Overload protection (operational ater 20 seconds to avoid

tripping on motor starting)

A selection o advanced winding protection rom

GREY, TOTAL & TOTAL+ to suit even the harshest o

environmental conditions.

Inlet lters and higher IP protection levels available on all

sizes to suit all applications.

+/-1% digital voltage regulation as standard.

[Option or +/-0.5%.]

>300% overload rom the ma_AUX auxiliary winding or

20 seconds.

Alternator Perormance Indicators


8/16


9/16

Type A C E F CG

28-1VS/4 405 225 / / 200

28-2VS/4 405 225 / / 200

28-0S/4 445 285 / / 214

28-S/4 445 285 / / 21728-M/4 480 285 131,5 71 238

28-2L/4 525 285 171,5 111 254

28-VL/4 555 285 171,5 111 274

SAEN.

Disc Coupling

L d Q1 S1 a1

6 1/2 30,2 215,9 200 9 60

7 1/2 30,2 241,3 222,25 9 45

8 62 263,52 244,47 11 60

10 53,8 314,32 295,27 11 45

11 1/2 39,6 352,42 333,37 11 45

SAE N.Flange

O P Q a

5 356 314,3 333,4 45

4 403 362 381 30

3 451 409,6 428,6 30

2 490 447,7 466,7 30

Main Rotor & Stator

Impregnated using the latest trickle technology,

the non-hygroscopic resin is added to the windings

and then cured in the same process while rotating

to ensure best coverage possible. The insulation

materials used are Class H throughout. Copper

used or the main windings is G2 with two layerso enamel; the winding or the ma_AUX is G4

with our layers! Add to this then the rubber like

butadienic over the main and exciter stators and

EG43 compound over the main and exciter rotors

and you have a very high degree o protection

against harmul particle ingress.

Excitation System

The brushless excitation system takes the DC

voltage rom the DSR regulator according to load

changes. The DSR power is derived rom the

ma_AUX, auxiliary winding within the main statorwhich uses the 3rd harmonic to have high levels o

power when starting motors.

Bearings

Sealed or lie, quality ball bearings are used

throughout with oversize bearings at the driven

end to accept the side loading in belt driven

applications. Rear bearing is outboard o the

exciter or easier examination o rectifer assembly.

Motor Starting

Key to the telecom application is the ability to

accept large impact loads relative to the size o

the alternator. The ma_AUX system used in over

90,000 machines each year is well proven. It

provides over 300% power or 20 seconds which is

easily enough or most aircon motor. The voltage

dip will vary according to the level o the impact

load but typical TVDs would be 15% with 100%

load on, 25% with 200% load on & 35% with 300%

load on.

Flat drawing o typical alternator

ECP28 MD35 arrangement


10/16

Battery 2

BTS 1

BTS 2

Battery 1

AncillariesLighting

& small

DC power

Distribution

Panel

Automatic

transfer

switch

DC

generator

PV

-48VDC

DC Energy Systems

With the telecom market the need or AC air conditioning

is reducing and as such the primary loads are DC. Other

site loads such as lighting, heating, remote monitoring

and air outlet damper motors can easily be designed or DC

operation using DC-to-DC converters. Thereore a DC power

generator system may be a more eective on site solution.

This can be a traditional generator system with a DC

alternator or a more complex hybrid system, although more

expensive than the AC systems.

Hybrid power system principle such that it is more ecient

to charge the batteries directly which then supply the


11/16

Base Transceiver Station, rather than power the station

continually. These systems are operated at speeds

and powers to suit the battery type, and cutting in and

out at pre-set battery charge levels. This means that

the generating set is not continually running allowing

considerable uel savings. Base Transceiver Station

systems are traditionally 48VDC, a legacy o the telecom

market and typically being positive grounded this is

considered better or use with common valve regulated lead

acid (VRLA) batteries.

Other hybrid systems might also consider inputs rom solar

and wind sources.

Mecc Alte Range O AL DC Alternators

Founded upon common principles and sharing components

and eatures o the AC alternators supplied to the telecom

market, Simple construction ensures maximum reliability

whilst minimising maintenance.

The Mecc Alte range o AL, DC alternators are well proven

supplied as either 3, 6 or 9 phase AC rectifed machines

with voltage controlled as a unction o the DC output

(rather than AC output) rom the rectifer sensing the DC

side o the rectifer ensures correct excitation with DC load

changes, guaranteeing a more stable output.

Voltage control is by the RT regulator. When supplied with

a current sensing transormer, the RT acts as a battery

charging regulator limiting the maximum amps that can

be drawn with adjustable potentiometers, and the also

the oat or trickle charge which is certainly a prerequisite

or VRLA batteries. The voltage is controlled and rises as

a unction o the connected system. With voltage ripple

down to less than 2%, the trade o cost versus battery

lie expectancy is acceptable with most battery suppliers

anticipating 3.5 year lie.

The AL machines may be supplied as fxed speed, dual

speed or variable speed. The limitations o speed range are

mainly due to the engines speed/power curve and the BTS/

battery load.

External generating set controls are required to switch the

set on and o according to battery charge status.


12/16

DC OUT

F1F2F3

L3L2L1 R S2 32 I F E XT

BatteryPack

ElectricGenerator

The Mercurio Hybrid SystemMecc Alte has developed a innovative DC

power convertor which, coupled with a Mecc

Alte AC alternator, will deliver a quality DC

power output customised to suit Cell tower

systems. The MERCURIO system converts the

AC output o a Mecc Alte generator to DC power

whilst unctioning as an alternator and genset

supervisor. This enables it the ability to stop and

start the genset system, it works with fxed, twin

or variable speed control systems. It can also

control AC or DC inputs rom other devices such

as the grid and renewable power sources like solar

panels or micro wind turbines.

Providing electronically conditioned DC output the

voltage ripple levels are down to


13/16

So what are the Mercurio benefts?Simplicity

One plug and go system module or all applications

Outlay costs are minimised

it can be used with our traditional AC alternator allowing

the most cost eective power supply.

Reliability

With proven reliability and technology and minimal

maintenance.

OEM costs can be reduced

use o common bedplates, canopies within existing designsand potentially the same engine systems already used.

Its an economical system

The alternators are sized to suit the load profle and engine

speed/power perormance curves.

It can be used as a hybrid system monitoring battery top

up needs and stopping and starting as needed. It can also

be used in twin speed or variable speed conditions ensuring

maximum uel economy.

High efciency

Typical eciency is 91.9% ay 75% rated output or the

power convertor.

Flexibility

It supports all the Mecc Alte speed systems, and charger

profle can be easily changed.

Hybrid and Grid tie Compatible

It will accept additional AC and DC inputs, as well as a

traditional grid eed 50 or 60Hz.

Protected system

Load delay sot start unction, audible alarm and 8 LED

warning lights.

can urther maximise uel eciency and charging profles

can be individually set to match battery type and optimise

perormance levels although engine control is typically more

expensive and complex subject to calibration.

Not only can the MERCURIO be used with Mecc Altes

traditional AC alternator design it also works with the

Mecc Alte VISPA permanent magnet alternator. Although

more expensive than traditional AC alternator the VISPA

can represent a smaller package compared to the standard

construction machines. The stator wound component is

central to the rotor with three power leads to connect to

the power converter. Magnet type used depends on power

required and the physical size targeted. With alternators

individually sized to suit the load profle and engine speed/

power perormance curves.

ECP28 alternator

Mercurio 5 module

with optional display

VISPA variable speed aternator


14/16

These tests are perormed with rapid aging

methods by means o alternating exposure to

extreme temperatures. Our quality is enhanced

during the production process with computerised

equipment making checks on electronic and

electrical circuits. The high quality o our fnished

products is due to a perect combination-high

perormance and maximum reliability. That

quality is certifed by international bodies such as

the Canadian Standards Association (CSA), the

Underwriters Laboratories (UL) and Det Norske

Veritas (DNV). Further supported by our ISO9001

accreditation rom Registro Italiano Navale (RINA).

Every quality mark is a guarantee o the

painstaking assessment o prototypes and a

commitment to continuous audits by external

inspectors to monitor product consistency and

product quality.

This quality assurance allows us to be proud

o our products. Our products are now globally

recognised. This high market acceptance has

originated rom a combination o eective

marketing through our sales and distribution

acilities, established training plans or our many

customers, and consistently great atersales

service. We are a proessional and responsible

company and understand that a good reputation

breeds success. We also understand that our

reputation depends on continually high standards

o support whenever and wherever it is required.

With an extensive global service and atersales

network, you can be assured that your product will

be supported anywhere in the world.

Our quality is certifed by international bodies and

is supported by our ISO9001 accreditation. This

quality assurance allows us to be proud o our

products and allows you peace o mind knowing

our alternators are built with the highest possible

quality standards.

As a responsible and proessional companywe understand that a good reputation breeds

success. We also understand that our reputation

depends on continually high standards o support

whenever and wherever it is required. With an

extensive global service and ater sales network,

you can be assured that your product will be

supported anywhere in the world.

Our Quality,

Atersalesand ServiceWe have reached the highest possible quality standards in every area o design, production and

sales. With us, the pursuit o quality begins long beore actual production with checks on semi-

processed parts and sample tests on electronic components.

Certifcations Owned by Mecc Alte


15/16

Totally Focused.Totally Independent.

Jonathan StokesCommercial Sales Manager

Mobile: +44 (0) 7887 787 292

MECC ALTE (UK) LTD. 6 LANDS END WAY, OAKHAM, RUTLAND LE15 6RF

Telephone: +44 (0) 1572 771160 Fax: +44 (0) 1572 771161

E-mail: [email protected] www.meccalte.com

Suppliers & Manufacturers of A.C Generators Worldwide 1 3000kVA


16/16

U.S.A. and Canada

Mecc Alte Inc.1229 Adam Drive

McHenry, IL, 60051

T: +1 815 344 0530

F: +1 815 344 0535

E: [email protected]

[email protected]

Mecc Alte SpAVia Roma

20 36051 Creazzo

Vicenza ITALY

T: +39 0444 396111

F: +39 0444 396166


[email protected]

United KingdomMecc Alte U.K. LTD

6 Lands End Way

Oakham

Rutland

T: +44 (0) 1572 771160

F: +44 (0) 1572 771161


[email protected]

France

Mecc Alte International S.A.Z.E.La Gagnerie

16330 ST.Amant De Boixe

T: +33 (0) 545 397562

F: +33 (0) 545 398820


[email protected]

SpainMecc Alte Espaa S.A.

C/ Rio Taibilla, 2

Polig. Ind. Los Valeros

03178 Benijofar (Alicante)

T: +34 (0) 96 6702152

F: +34 (0) 96 6700103

E: [email protected]@meccalte.es

GermanyMecc Alte Generatoren GmbH

Ensener Weg 21

D-51149 Kln

T: +49 (0) 2203 503810

F: +49 (0) 2203 503796


[email protected]

Far East

Mecc Alte (F.E.) PTE LTD19 Kian Teck Drive

Singapore 628836

T: +65 62 657122

F: +65 62 653991


[email protected]

IndiaMecc Alte India PVT LTD

Plot NO: 1, Sanaswadi

Talegaon

Dhamdhere Road

Taluka: Shirur, District:

Pune - 412208

Maharashtra, India

T: +91 2137 619600F: +91 2137 619699


[email protected]

China

Mecc Alte Alternator Haimen LTD755 Nanhai East Rd

Jiangsu HEDZ 226100 PRC

T: +86 (0) 513 82325758

F: +86 (0)513 82325768


[email protected]

AustraliaMecc Alte Alternators PTY LTD

10 Duncan Road, PO Box

1046

Dry Creek, 5094, South

Australia

T: +61 (0)8 8349 8422

F: +61 (0)8 8349 8455E: [email protected]

[email protected]

www.meccalte.com Issue 1

Telecom Application

Documents

Transcript of Telecom Application