Single-phase toroidal lighting transformers

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CHARACTERISTICS

- Transformer not protected against direct and indirect contacts, suitable for incorporating into unknown electrical equipment.
- Transformer not resistant to short circuits and overloads.
- IP00 degree of protection against direct contacts in compliance with IEC 529.
- Transformer for fixed installations.
- Reference ambient temperature: 25°C.
- CEI 96-3 and VDE 0551 manufacturing standards, translations of EN 61558-1.
- For higher quantities, conformity certificates issued by European and US quality institutions can be obtained at the customer's request.
- Test voltage between primary and secondary winding of 4kV.
- Magnetic core in toroidal plate with adjustable crystals and at low losses.
- Copper wire windings enamelled with Class F (155°C) or Class H (180°C) resin.
- The components and materials comprising the transformer are certified and in compliance with the relative standards.

TABLE FOR SELECTING THE PROTECTION FUSES (*) AND DISSIPATED POWER

POWER [VA]

Primary

Secondary
(**)

Dissipation
[W]
(***)

 

220/230V

12V

24V

48V

 

20

0.2

2.5

1.25

0.5

4

50

0.25

5

2

1

7

60

0.315

6.3

2.5

1.25

8

100

0.5

10

5

2

10

150

0.8

16

6.3

3.15

18

200

1

16

10

5

20

250

1.25

20

10

6.3

22

300

1.6

25

16

6.3

25

400

2

32

16

10

38

500

2.5

40

20

10

45

(*) All fuses proposed are time-lag fuses.
(**) With background highlighted in red: 5x20 fuses in glass are not available or come with non-standardised calibration; select gL fuses.
(***) Maximum dissipation for calculating the temperature inside the electrical panels according to the CEI 17-1 standard, at the nominal power and in the worst operating conditions.

Type: associated transformer
Primary voltage: 230V (also available in the 240V and 280V versions)
Secondary voltage: 12V (also available in the 24V version)
Transformers for driving light fixtures
Can also be supplied with restorable thermal protector in the primary voltage
Reference standards: CEI 96-7; EN 61558-2-6

PRODUCT NOT INTERESTED BY 204/108/CE NORM RELATED TO ELECTROMAGNETIC COMPATIBILITY EMISSIONS.

PART NUMBER

POWER
[VA]

Outside diameter D [mm]

Internal
diameter
d [mm]

Thickness H [mm]

Weight [kg]

Notes

BTTTR246

20

75

32

30

0.51

 

BTTTR246P

20

75

32

30

0.56

Protected execution

BTTTR247

50

60

20

50

0.66

 

BTTTR247P

50

60

20

50

0.71

Protected execution

BTTTR248

50

83

30

32

0.66

 

BTTTR248P

50

83

30

32

0.71

Protected execution

BTTTR250

50

78

30

29

0.66

 

BTTTR250P

50

78

30

29

0.71

Protected execution

BTTTR251

50

115

27

20

0.71

 

BTTTR251P

50

115

27

20

0.76

Protected execution

BTTTR252

50

60

11

56

0.66

Cased execution

BTTTR252P

50

60

11

56

0.71

Protected and cased execution

BTTTR253

60

90

36

38

0.71

 

BTTTR253P

60

90

36

38

0.76

Protected execution

BTTTR262

60

115

27

20

0.73

 

BTTTR262P

60

115

27

20

0.78

Protected execution

BTTTR257

100

100

44

37

1.06

 

BTTTR257P

100

100

44

37

1.11

Protected execution

BTTTR259

100

150

48

20

1.15

 

BTTTR259P

100

150

48

20

1.20

Protected execution

BTTTR260

100

80

16

64

1.15

Cased execution

BTTTR260P

100

80

16

64

1.20

Protected and cased execution

BTTTR263

150

105

40

47

1.46

 

BTTTR263P

150

105

40

47

1.51

Protected execution

BTTTR269

150

130

45

32

1.60

 

BTTTR269P

150

130

45

32

1.65

Protected execution

BTTTR270

150

85

16

75

1.60

Cased execution

BTTTR270P

150

85

16

75

1.65

Protected and cased execution

BTTTR264

200

120

40

50

1.98

 

BTTTR264P

200

120

40

50

2.03

Protected execution

BTTTR271

200

100

16

75

2.05

Cased execution

BTTTR271P

200

100

16

75

2.10

Protected and cased execution

BTTTR265

250

115

43

55

2.22

 

BTTTR265P

250

115

43

55

2.27

Protected execution

BTTTR266

300

130

43

50

2.85

 

BTTTR266P

300

130

43

50

2.90

Protected execution

BTTTR267

400

135

40

55

3.53

 

BTTTR267P

400

135

40

55

3.58

Protected execution

BTTTR268

500

135

40

55

4.56

 

BTTTR268P

500

135

40

55

4.61

Protected execution

Notes:
1.Drawings, measurements and weights are indicative and can change without notice.
2.For powers and voltages not reported in the table or for special construction requirements, request the characteristics of the transformers from our technical office.
3.On specific request, discs in metal or thermoplastic can be supplied for securing the transformers (figure n° 2).
4.On specific request, cased versions can be supplied with terminals connected to retractable terminal block.