Specialty Transformers

Image Part Number Description / PDF Quantity Rfq
78253/35JC

78253/35JC

Murata Power Solutions

XFRMR 1:2.27 SMD MAX253

1453

760801131

760801131

Würth Elektronik Midcom

CMC 900MA 6 LN T/H PFC

0

21033814822

21033814822

HARTING

M12 TRANSF. 1000BASE-T X ANG W/

42

21033812823

21033812823

HARTING

M12 TRANSF. 10GBASE-T X STR WITH

120

78250MVC

78250MVC

Murata Power Solutions

XFRMR MAX250 4KVDC 2.5 MH SMD

5478

SM-LP-5002

SM-LP-5002

J.W. Miller / Bourns

TRANSFORMBER LINE MATCHING SMD

0

PFC3514QM-231K06B-00

PFC3514QM-231K06B-00

TDK Corporation

CHOKE COMMON MODE

0

PH9384.011NLT

PH9384.011NLT

PulseLarsen Antenna

XFMR GATE-DR 1CT:1CT SM NPB

110

760805410

760805410

Würth Elektronik Midcom

CMC 2.4A 6 LN T/H PFC

0

78253/35MVC

78253/35MVC

Murata Power Solutions

MAX 253 TX 4KVDC 3.3V IN 5V OUT

2183

ZS1052(H)

ZS1052(H)

Excelitas Technologies

TRIGGER COIL

3339

PH9400.566ANLT

PH9400.566ANLT

PulseLarsen Antenna

XFMR GATE DRIVE SIDE CAR SMT

0

760806200

760806200

Würth Elektronik Midcom

CMC 1.4A 6 LN T/H PFC

0

PH9185.034NLT

PH9185.034NLT

PulseLarsen Antenna

TRANSFORMER 750UH 3:4 SMD

2044

PH9185.021NL

PH9185.021NL

PulseLarsen Antenna

TRANSFORMER 880UH 2:1 SMD

0

760805211

760805211

Würth Elektronik Midcom

CMC 1.4A 6 LN T/H PFC

0

78250MVC-R

78250MVC-R

Murata Power Solutions

XFRMR MAX250 4KVDC 2.5 MH SMD

0

PFC3519QM-231K07B-00

PFC3519QM-231K07B-00

TDK Corporation

CHOKE COMMON MODE

40

PH9185.083NL

PH9185.083NL

PulseLarsen Antenna

TRANSFORMER 560UH 8:3 SMD

0

HX5019FNL

HX5019FNL

PulseLarsen Antenna

GIGABIT XFORMER/CMC/SHUNT MOD

0

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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