One-phase transformer
Benefits of our single-phase transformers
- Single-phase transformers with UL approval
- Adaptation and flexibility to specific customer requirements and wide portoflio
- High quality, long usability and robust power supply made in Germany
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Type series RTD
Type series FTE W40 to W160 according to VDE 0570 / EN 61558 Part 2-6
- Jacket transformer / EI sheet cut
- Power range 63 – 250 VA, frequency 50 / 60 Hz
- Protection class IP 00, suitability for installation up to IP 20
- Protection class I, insulation class T 40 / B
- Separate windings
- Screw terminals with self-lifting disc
- for conductor cross-section up to 1.5 mm2
- Additional flat connector 2.8 x 0.8 DIN 46244
- Foot angle fastening
- Contact protection according to VBG 4
- Standard screw-on dimensions according to DIN 41308 (e1 x f1)
- Switch-on time 100
Type series UTUB
Type series UTUB / UTUBL (K 1.2 to K 20.0) according to VDE 0570 / EN 61558
- Nuclear transformer / UJ sheet cut
- Power range 1.6 – 20.0 kVA
- Frequency 50 / 60 Hz
- Protection class IP 00
- Installation suitability up to IP 20
- Protection class I
- Insulation class T 40 / B
- Separate windings
- Vacuum soaked
- Terminals
- Foot angle fastening: UTUB standing to the ground
- mounting, UTUBL lying for wall mounting
- Contact protection according to VBG 4
- With air duct, installation position persecuting, approx. 10 reduction in performance when mounted horizontally
Type series UTEB
Type series UTEB (G200 to G1450) according to VDE 0570 / EN 61558
- Jacket transformer / EI sheet cut
- Power range 320 – 2500 VA
- Frequency 50 / 60 Hz
- Protection class IP 00
- Installation suitability up to IP 20
- Protection class I
- Insulation class T 40 / B
- Separate windings
- Vacuum soaked
- Transformer terminals
- Foot angle fastening
- Contact protection according to VBG 4
- Standard screw-on dimensions according to DIN 4130
Type series FTUL
Type series FTUL 24 to FTUL 1451 according to VDE 0570 / EN 61558 Part 2 – 2 / 4 and UL 506. As a saving winding according to VDE 0570 / EN 60558 Part 2 – 13 with index –
- Jacket transformer / EJ-
- Sheet metal cutting
- Power range 40 – 3000 VA
- Frequency 50 / 60 Hz
- Insulation class T 40 / B
- Protection class IP 00
- Installation suitability up to IP 20
- Protection class I
- Separate windings
- Savings winding recognizable by ending -A (e.g. FTUL 24-A)
- Vacuum soaked
- Transformer terminals
- Foot angle fastening
- Contact protection according to VBG 4
- Switch-on time 100
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Single-phase transformers Definition
Single-phase transformers are essential components in energy conversion. These transformers enable machines and systems to be efficiently adapted to different mains voltages and types. As key players in the single-phase power supply, they offer solutions for applications that require a stable single-phase output voltage.
Single-phase transformers Function
Single-phase transformers fulfill a central function in electrical systems by converting electrical voltages efficiently and safely. They work according to the principle of electromagnetic induction, which enables the contactless transfer of energy between two circuits.
How does a single-phase transformer work?
A single-phase transformer basically consists of two electrically separate windings – the primary winding and the secondary winding – which are arranged together on a magnetically conductive iron core. If an alternating voltage is applied to the primary winding, a changing magnetic field is created, which is transferred to the secondary winding via the iron core. This in turn generates an induced alternating voltage.
Depending on the winding ratio between the primary and secondary windings, the voltage can be increased (high-voltage transformer) or decreased (low-voltage transformer). The electrical power is virtually maintained – only minor losses occur due to heating and magnetization current.
Galvanic isolation for greater safety
A decisive advantage of single-phase transformers is the so-called galvanic isolation. As there is no direct electrical contact between the input and output, the transformer offers effective protection against electrical interference, overvoltages or short circuits. This property makes it particularly valuable in sensitive control and safety applications.
Flexible application options thanks to simple function
The function of a single-phase transformer is not only reliable, but also extremely versatile. Its simple design and high efficiency make it suitable for a wide range of applications – from building services and industry to medical and measurement technology.
Areas of application for single-phase transformers
Single-phase transformers are used wherever reliable voltage conversion is required in the single-phase AC grid. They are used in particular when a three-phase network is not necessary or not available – for example in smaller systems or in applications with low power requirements.
Typical areas of application at a glance:
Electronics and appliance manufacturing: Single-phase transformers are ideal for supplying power supply units, chargers and sensitive electronics. They ensure the necessary voltage stability, which is essential for trouble-free operation.
Building services and building technology: Single-phase transformers are used particularly in homes, small businesses or public facilities – for example in doorbells, heating systems or lighting systems.
Measurement and testing technology: Thanks to their galvanic isolation capability, single-phase transformers are ideal for measuring devices, test set-ups and calibration systems where high measurement accuracy and safety are required.
Medical technology: In medical devices, single-phase transformers make a decisive contribution to patient safety by ensuring stable supply voltages with high insulation resistance.
Workshops and laboratories: In laboratory environments or workshops, they are used for test benches, laboratory power supply units or small machines to enable precise voltage adjustments.
Automation and control: Even in small control circuits, for example for controlling relays, PLC components or signal units, single-phase transformers provide the necessary mains independence and functional reliability.
Why single-phase transformers from ktc?
Thanks to their compact design, high reliability and simple integration, single-phase transformers from KTC are an ideal solution for a wide range of applications. They enable efficient and safe voltage adjustment, even under demanding environmental conditions.
Discover all our transformers such as control transformers, safety transformers and single-phase and three-phase transformers here
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