Transformer power supplies
Benefits of transformer our power supplies (one- and three-phase power supplies)
- Single-phase and three-phase transformer power supply units as well as customer-specific applications possible
- Adaptation and flexibility to specific customer requirements and broad portfolio
- High quality, long usability and robust power supply made in Germany
- Available as standard or customer-specific solution
Single-phase transformer power supplies
Single-phase transformer power supply unit series FGSE
Type series FGSE according to VDE 0570 / EN 61558 Part 2 – 6
- Ripple< 5 %
- Open installation design
- Rated current range 1 – 6 A
- Protection class IP 00
- Transformer according to VDE 0570 Part 2 – 6, protection class I
- Ambient temperature max. 60° C
- Screw terminals with self-lifting
washer for conductor cross-sections up to 1.5 mm2 - Additional flat connector 2.8 x 0.8 DIN 46244
- Foot angle fastening
- Short-circuit protection by internal miniature fuse
5 x 20 in the DC circuit - PFC according to EN 61000-3-2
- Contact protection according to VBG 4
- Output rated voltage 24 VDC according to DIN 19240
- Open-circuit voltage < 30.2 VDC at
6 % mains overvoltage - Full load voltage > 20.4 VDC
at 10 % mains undervoltage - LED power indicator
- Switch-on time 100
Position
- Wall-mounted, clamps horizontally up and down
- For deviating installation
approx. 20 % reduction in performance
Single-phase network device type series ESKE
Type series ESKE according to VDE 0570 / EN 61558 Part 2 – 6 ripple < 5
- Open installation design
- Rated current range 10 – 16 A
- Protection class IP 00
- Transformer according to VDE 0570 Part 2 – 6, protection class I
- Shield winding between primary and secondary
- Ambient temperature max. 60° C
- Connection to contact-protected
screw terminals - Foot angle fastening
- Protection external
- PFC according to EN 61000-3-2
- Contact protection according to VBG 4
- Output rated voltage 24 VDC according to DIN 19240
- Open-circuit voltage < 30.2 VDC
at 6 % mains overvoltage - Full load voltage > 20.4 VDC
at 10 % mains undervoltage - Switch-on time 100
Position
- Cooling ribs perenning
- For deviating installation
approx. 20 % reduction in performance
Three-phase power supply unit
DSK/ DSKE series
Type series DSKE with sieve-Elkos residual ripple <3%
Type-reel DSK without sieve-Elkos residual ripple <5%
according to VDE 0570 / EN 61558 Part 2 – 6
- Ripple <5% or <3%
- Open installation design
- Rated current range 6 – 40 A
- Protection class IP 00
- Transformer according to VDE 0570 Part 2 – 6, protection class I
- Shield winding between primary and secondary
- Ambient temperature max. 60° C
- Connection to contact-protected screw terminals
- Foot angle fastening
- Protection external
- 137-106 and 137-106.200 with internal fine fuse 6.3 A
- PFC according to EN 61000-3-2
- Contact protection according to VBG 4
- Output rated voltage 24 VDC according to DIN 19240
- Open-circuit voltage < 30.2 VDC at
6% mains overvoltage - Full load voltage > 20.4 VDC at
10% mains undervoltage - Switch-on time 100
Position
- Cooling ribs perenning
- In case of different assembly
approx. 20% performance reduction
Functionality of a transformer power supply unit compared to a switching power supply unit
A switching power supply and a transformer power supply are both types of power supplies that are used to convert the mains voltage into a different voltage. The main difference between the two, however, lies in their functionality and design:
- How it works:
- Transformer power supply: A transformer power supply uses a transformer to reduce or increase the voltage. The transformer works with alternating current and converts the voltage by induction. Transformer power supplies usually operate at a frequency of 50 Hz or 60 Hz.
- Switching power supply: A switching power supply uses a switching circuit to efficiently convert the input voltage into an output voltage. This is achieved by periodically switching semiconductor switches such as transistors or MOSFETs on and off at high frequency (typically several kHz to MHz). This switching frequency allows switching power supplies to be more compact and efficient than transformer power supplies.
Advantages of transformer power supply units compared to a switching power supply unit
- Simple construction and reliability:
- Transformer power supplies have a simpler design compared to switching power supplies. They contain fewer electronic components and are therefore less prone to failure.
- The simple design of transformer power supplies often makes them a reliable choice for applications where robustness and durability are important, especially in environments with high temperatures or strong vibrations.
- Low electromagnetic interference:
- Transformer power supplies generally generate less electromagnetic interference (EMI) than switching power supplies. This can be an advantage in some applications, especially when sensitive electronic devices are nearby that could be disturbed by electromagnetic interference.
- Better EMC compatibility:
- By using a transformer for voltage conversion, transformer power supplies often offer better electromagnetic compatibility (EMC) compared to switching power supplies. This can help to reduce interference in other electronic devices and facilitate compliance with EMC standards.
- Lower costs with lower benefits:
- For low power applications, transformer power supplies can be a more cost-effective option due to their simpler design and lower production costs. Transformer power supply units can offer an economical solution, especially for small, simple applications.
- Safety and isolation:
- Transformer power supplies provide galvanic isolation between the input and output voltage as they use a transformer. This provides additional safety, especially in applications where isolation between different circuits is required to prevent electric shocks or damage.
Discover all our transformers such as control transformers, safety transformers and single-phase and three-phase transformers here
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