Single-phase transformers

Control, safety or isolating low voltage transformers

Date: April 2, 2014 Category:

Single-phase transformers

The dry type single-phase transformers has a rated power range between 10VA and 31,5 kVA. The transformers are manufactured according the IEC/EN 61558 Standards (safety, isolating, control, separating or medical transformers), IEC/EN 60076 (power transformers) or CNOMO E03.22.210N. There are different models of transformers depends of the protection index which can be IP00 or IP20, with Screw or Din rail fixing. The different size transformers work 100% of the rated power in ambient temperatures up to 40°C. There is a wide range of Transformers in stock and special transformers are designed on request.

MODELS

TR21

CONTROL TRANSFORMER

Control and safety or isolating single-phase transformers. They can supply high instantaneous power necessary for the correct operation of contactors and other switch and control gear. Great flexibility due to the double primary voltage and the serial-parallel connection. TIG welding in the core and the base-plates that prevent vibrations and noise. Fast and easy connection due to the clamp type terminal blocks.

PRI VOLTAGE
0-230-400V

SEC VOLTAGE
12-24V
24-48V
115-230V

SEC CONNECTION
SERIAL
PARALLEL

THERMAL CLASS
B

MAX AMBIENT TEMPERATURE
40ºC

FREQUENCY
50/60Hz

CLASS
I

PROTECTION INDEX
IP00

DIELECTRIC STRENGTH PRI-SEC
> 4kV

STANDARDS
IEC/EN 61558-1
IEC/EN 61558-2-2
IEC/EN 61558-2-4
IEC/EN 61558-2-6

TR22

POWER TRANSFORMER

Single-phase power isolating transformers dry type. Intended for change of voltages with galvanic isolation and/or attenuation of line disturbances.Manufactured with electrical steel with low losses and copper windings. On request we can manufacture transformers with other voltages, with taps, electrostatic screen, with thermal switch, etc.

NATURAL AIR COOLING
OTHER CHARACTERISTICS ON DEMAND

PRI VOLTAGE
230V

SEC VOLTAGE
230V

THERMAL CLASS
B

MAX AMBIENT TEMPERATURE
40ºC

FREQUENCY
50/60Hz

CLASS
I

PROTECTION INDEX
IP00 – IP23

DIELECTRIC STRENGTH PRI-SEC
> 4kV

STANDARDS
IEC 60726

TR23

CUSTOMER DESIGN TRANSFORMER

Single-phase special transformers manufactured on request (customer design). These transformers can be manufactured with fuse holders, thermal protectors, electrostatic screen. TIG welding in the core and the base-plates that prevent vibrations and noise. Fast and easy connection due to the clamp type terminal blocks that are delivered open.

PRI VOLTAGE
ON REQUEST

SEC VOLTAGE
ON REQUEST

THERMAL CLASS
B

MAX AMBIENT TEMPERATURE
40ºC

FREQUENCY
50/60Hz

CLASS
I

PROTECTION INDEX
IP00

DIELECTRIC STRENGTH PRI-SEC
> 4kV

STANDARDS
IEC/EN 61558

TR26

SAFETY FOR SWIMMING-POOL TRANSFORMER

Single-phase safety transformers intended to supply spotlights in swimming-pools, garden ponds, ornamental fountains and moist locations, where for safety reasons it is necessary to supply with safety extra low voltage (SELV). It has several taps in the primary winding in order to compensate for the voltage drop in the transformer-spotlight line conductors and thus gets an adequate brightness in every spotlight. On request we can manufacture transformers with other rated power or voltages, or with other line lengths between transformers and spotlights.

PRI VOLTAGE
230V

SEC VOLTAGE
12V

THERMAL CLASS
B (130ºC)
F(155ºC)

MAX AMBIENT TEMPERATURE
40ºC

FREQUENCY
50/60Hz

CLASS
I

PROTECTION INDEX
IP00 – IP20

DIELECTRIC STRENGTH PRI-SEC
 4,5kV

DIELECTRIC STRENGTH
WINDINGS-METALLIC PARTS
≥ 2,5kV

STANDARDS
IEC/EN 61558-1
IEC/EN 61558-2-6

TR26H

SAFETY FOR SWIMMING-POOL TRANSFORMER

Single-phase safety transformers intended to supply spotlights in swimming-pools, garden ponds, ornamental fountains and moist locations, where for safety reasons it is necessary to supply with safety extra low voltage (SELV). It has several taps in the primary winding in order to compensate for the voltage drop in the transformer-spotlight line conductors and thus gets an adequate brightness in every spotlight. On request we can manufacture transformers with other rated power or voltages, or with other line lengths between transformers and spotlights. The main characteristic of this model is the reduced height that allows the installation in a low profile box.

PRI VOLTAGE
230V

SEC VOLTAGE
12V

SEC CONNECTION
SERIAL
PARALLEL

THERMAL CLASS
F(155ºC)

MAX AMBIENT TEMPERATURE
40ºC

FREQUENCY
50/60Hz

CLASS
I

PROTECTION INDEX
IP20

DIELECTRIC STRENGTH PRI-SEC
> 4kV

ELECTROSTATIC SCREEN BETWEEN WINDINGS

STANDARDS
IEC/EN 61558-1
IEC/EN 61558-2-6

TR28

CONTROL & SAFETY OR ISOLATING TRANSFORMER

Control and safety or isolating single-phase transformers. They can supply high instantaneous power necessary for the correct operation of contactors and other switch and control gear. IP20 protection index (finger safe). For mounting on DIN/EN rail up to 320 VA. Fast and easy connection due to the high capacity clamp type terminal block . Great flexibility due to the several primary rated voltages with regulation taps ±15V (version 5.2) and the serial-parallel secondary connection.

PRI VOLTAGE
0-230-400V
0-230-400-460V  ±15V (5.2)

SEC VOLTAGE
12-24V
24-48V
115-230V

THERMAL CLASS
B (130ºC)
F(155ºC)

MAX AMBIENT TEMPERATURE
40ºC

FREQUENCY
50/60Hz

CLASS
I

PROTECTION INDEX
IP20

DIELECTRIC STRENGTH PRI-SEC
≥ 4,5kV

DIELECTRIC STRENGTH
WINDINGS-METALLIC PARTS
≥ 2,5kV

STANDARDS
IEC/EN 61558-1
IEC/EN 61558-2-2
IEC/EN 61558-2-4
IEC/EN 61558-2-6

RATED POWER

 

The dry type single-phase transformers has a rated power range between 10VA and 31,5 kVA. The different size transformers work 100% of the rated power in ambient temperatures up to 40°C. There is a wide range of Transformers in stock and special transformers are designed on request.

TR21 40-1000VA
TR22 1300-31500VA
TR23 10-1000VA
TR26 130-700VA
TR26H 350VA
TR28 2.2 25-3500VA
TR28 5.2 25-1250A

 

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