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Renewable energy technology

Isolation transformers for pv systems

fotovoltaicocarbogninfotovoltaico-carbogninThe exhaustion of fossil-fuel resources and the decision not to construct new nuclear power plants introduces an even more challenging situation for Italy with respect to other industrialized countries.

There is thus an urgent and growing need for energy produced with components that will not wear out over time.

Photovoltaic energy

Current photovoltaic technology will certainly not fully meet our planet’s current demand for energy, however it represents and will increasingly represent an indispensable factor provided it is used in the best possible manner, adopting high-level designs and manufacturing methods. An element that has contributed towards the spread of photovoltaic technology is an exchange with the distribution network.

This ingenious solution allows us to eliminate the enormous problem of the accumulation of energy needed for periods in which solar radiation or wind intensity are not sufficient to generate enough energy for the users’ needs.
An equally important advantage is that the surplus of energy produced is not wasted and is recovered in the very large ‘lung’ provided by the distribution network. 

Photovoltaic transformers 

trasformatori-fotovoltaici03trasformatori-fotovoltaici04Electrical current generated by photovoltaic cells does not have the characteristics that will allow it to interconnect with the network.

From the form of DC voltage, through appropriate devices (inverters) it is therefore converted into alternating voltage with a network frequency at 50-60 Hz.


Sometimes, however, between the network and the inverter outlet it is appropriate to insert an isolation transformer that will block any elements of disturbance for the network and will be able to galvanically isolate the network itself from the entire system. 

OPEN-TYPE VERSION:

  • Degree of protection IP00./span>
  • Insulation class F (Max Ta 40°C) – impregnated with tropicalized paint and resins.
  • Lifting lugs. 

STANDARDS
EN61558-2-4 / CEI96-8 / BS 3535

  • Electrostatic shield between primary and secondary (on request).
  • Very low loss magnetic cores. 

POSSIBILITIES FOR INSTALLATION:

  • In metallic housing (on request).
  • Inverter-side inlet, 400V conn. Y + N.
  • ENEL-side outlet, 400V, D connection or Y + N
  • Frequency of 50-60 Hz.
  • Transformation ratio: 1 : 1.

CHARACTERISTICS AND DIMENSIONS OF TRANSFORMERS FOR PHOTOVOLTAIC SYSTEMS – ‘TTFTV’ SERIES

DOUBLE ISOLATION TRANSFORMERS, WITH VERY LOW LOSS AND HIGH PERFORMANCE LEVELS
(Power, voltage and connection characteristics can be customized according to the client’s requirements)

power

KVA

MODEL

losses in Watt

performance

dimension in mm.

weight

sizes box in mm.

no-load

c.c.

%

A

B

C

Kg.

A

B

C

10

TTFTV10

85

300

97

360

200

345

64

470

340

435

20

TTFTV20

170

590

97

420

270

410

124

570

470

610

30

TTFTV30

190

680

97,10

480

240

480

149

570

470

610

40

TTFTV40

240

800

97,40

480

280

480

190

570

470

610

50

TTFTV50

265

1040

97,50

600

290

600

228

720

580

750

60

TTFTV60

300

1210

97,50

600

320

600

247

720

580

750

70

TTFTV70

320

1330

97,65

600

340

600

270

720

580

750

85

TTFTV85

395

1420

97,80

600

380

605

315

720

580

750

100

TTFTV100

410

1890

97,70

600

430

605

355

720

580

750

120

TTFTV120

630

2330

97,70

675

510

620

450

920

740

1020

150

TTFTV150

700

3000

97,60

675

500

600

480

920

740

1020

180

TTFTV180

780

3400

97,65

730

500

660

565

1150

850

1200

200

TTFTV200

810

4050

97,60

730

530

725

600

1150

850

1200

225

TTFTV225

930

4200

97,70

770

530

790

700

1150

850

1200

250

TTFTV250

1020

4400

97,80

770

585

790

745

1150

850

1200

Vector group:
YNyn0 oppure Dyn11 . (other connection types on request.)


Connections on IP20 terminal strips, flame retardant to UL 94 V0 up to 40KVA and bolt connections for higher power ratings.

These products are not affected by the 2004/108/EC Community Directive on electromagnetic compatibility as they are components with a low level of emission of electro-magnetic perturbation.

trasformatori fotovoltaici

TTFTV100 in open version

trasformatori fotovoltaici

TTFTV200 inside container

trasformatori fotovoltaici

HOUSING UNIT for TTFTV 200

Contact us now for more information

    Carbognin srl

    We are suppliers of each type of industry which requires the use of electrical and electronic equipment.

    Where we are

    V. Crispi, 9 (z.a).
    36075 - Montecchio Maggiore
    Vicenza - Italy

    Contacts

    Phone: +39 0444 698877
    Fax: +39 0444 698759
    carbognin@carbognin.it

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