Specialty Transformers

Image Part Number Description / PDF Quantity Rfq
21033814421

21033814421

HARTING

M12 TRANSF. 10/100BASE-T D ANG W

80

760801031

760801031

Würth Elektronik Midcom

CMC 400MA 5 LN T/H PFC

0

67124840

67124840

TRANSFORMER FOR CRYSTAL CS61574

216

PH9384.035NLT

PH9384.035NLT

PulseLarsen Antenna

XFMR GATE-DR 3CT:5CT SM NPB

520

67125350

67125350

TRANSFORMER 1CT:3CT:1 TR 3mH

97

14240R

14240R

Echelon by Adesto

FT-X1 COMMUNICATION TRANSFORMER

2916

78253/35VC

78253/35VC

Murata Power Solutions

XFRMR 3.3V IN 5V OUT MAX 253 DIP

0

21033814820

21033814820

HARTING

M12 TRANSF. 1000BASE-T X ANG W/O

44

ATB322515-0110

ATB322515-0110

TDK Corporation

TRANSFORMERS

880

78253/55C

78253/55C

Murata Power Solutions

XFRMR 5V IN/OUT MAX 253 DIP

5898

PH9400.233ANLT

PH9400.233ANLT

PulseLarsen Antenna

XFMR GATE DRIVE SIDE CAR SMT

0

782100/35JVC

782100/35JVC

Murata Power Solutions

TRANSFORMER, 3.3V-5.0V, 4KVDC, 1

0

PH9185.013NL

PH9185.013NL

PulseLarsen Antenna

TRANSFORMER 200UH 1:3 SMD

0

LM-NP-1003L

LM-NP-1003L

J.W. Miller / Bourns

TRANSF LINE MATCHING

728

PFC3525ER-301K04E-00

PFC3525ER-301K04E-00

TDK Corporation

CHOKE COMMON MODE

0

760804110

760804110

Würth Elektronik Midcom

CMC 1.1A 6 LN T/H PFC

128

PE-8270NL

PE-8270NL

PulseLarsen Antenna

TRANSFORMER

1178

LM-NP-1001-B1L

LM-NP-1001-B1L

J.W. Miller / Bourns

TRANSF LINE MATCHING

71

CTX310411-R

CTX310411-R

PowerStor (Eaton)

TRANSFORMER CCFL 4W 10V 7MA SMD

0

782485/55C

782485/55C

Murata Power Solutions

XFRMR 1:1.5 T/H ADM2485 ANLG DEV

13632

Specialty Transformers

1. Overview

Specialty Transformers are customized electromagnetic devices designed for specific applications requiring non-standard electrical parameters, isolation requirements, or environmental adaptability. Unlike general-purpose transformers, they are engineered to meet precise technical specifications in voltage conversion, signal isolation, impedance matching, and power conditioning. These transformers play critical roles in advanced power systems, medical equipment, industrial automation, and emerging technologies like renewable energy integration.

2. Major Types and Functional Classification

Type Functional Characteristics Application Examples
Isolation Transformers Provide galvanic isolation with 1:1 turns ratio Medical imaging equipment, industrial safety systems
Auto-transformers Shared winding design for variable voltage adjustment Voltage regulators in power distribution networks
Current Transformers (CTs) Accurate current measurement with stepped-down output Protective relaying in substations, energy meters
Potential Transformers (PTs) Precise voltage scaling for metering and protection Grid monitoring systems, circuit breaker controls
High-Frequency Transformers Operate at 20kHz+ with ferrite cores Switch-mode power supplies, wireless charging systems
Grounding Transformers Create neutral points in ungrounded systems Renewable energy plants, offshore platforms

3. Structure and Components

Typical construction includes:

  • Core: Cold-rolled grain-oriented silicon steel (CRGO) or ferrite materials
  • Windings: Copper/aluminum conductors with epoxy/polyester insulation
  • Insulation System: Combination of paper, varnish, and synthetic resins
  • Housing: Corrosion-resistant steel/aluminum enclosures with IP23-IP54 ratings
  • Cooling System: Air-natural (AN), air-forced (AF), or oil-immersed (ONAN) configurations

4. Key Technical Parameters

Parameter Typical Range Importance
Rated Power (kVA) 0.1-10,000 Determines load capacity and thermal performance
Voltage Ratio 1:1 to 1:100 Defines input/output voltage relationship
Frequency Range (Hz) 50/60, 400, 20k-100k Dictates application suitability
Efficiency (%) 95-99.5 Impacts operational cost and thermal management
Insulation Class A (105 C) to H (155 C) Determines lifespan and safety margins
Short-Circuit Impedance (%) 4-15 Affects fault current limitation and voltage regulation

5. Application Fields

  • Power Systems: Grid substations, HVDC converter stations
  • Industrial: CNC machines, welding robots
  • Telecom: 5G base stations, fiber optic networks
  • Medical: MRI scanners, X-ray machines
  • Transportation: High-speed rail traction systems

6. Leading Manufacturers and Products

Manufacturer Representative Product Key Features
ABB Triton Isolation Transformer Cast-resin design for marine environments
Siemens SITRANS CT Family 0.1% accuracy class for energy metering
GE Grid Solutions TXpert Smart Transformer Integrated IoT sensors for condition monitoring
Schneider Electric Harmonium HF Series 40kHz operation for data center UPS systems
Toshiba H85-GT Grounding Transformer Designed for 132kV renewable energy grids

7. Selection Guidelines

Key considerations:

  • Define exact voltage/current transformation ratio
  • Assess environmental conditions (temperature, humidity, vibration)
  • Verify compliance with standards (IEC 60076, IEEE C57.12)
  • Evaluate cooling requirements and installation space
  • Consider future expansion needs (15-20% capacity margin)

8. Industry Trends

Emerging developments include:

  • Adoption of amorphous metal cores for 80% lower no-load losses
  • Integration of fiber-optic sensors for real-time thermal monitoring
  • Development of planar transformers for EV charging stations
  • Implementation of digital twin technology for predictive maintenance
  • Advancements in nanodielectric insulation materials
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