Specialty Transformers

Image Part Number Description / PDF Quantity Rfq
LM-LP-1005L

LM-LP-1005L

J.W. Miller / Bourns

TRANSFORMER LINE MATCHING

812

LM-LP-1001L

LM-LP-1001L

J.W. Miller / Bourns

TRANSF LINE MATCHING

610

LM-NP-1002L

LM-NP-1002L

J.W. Miller / Bourns

TRANSFORMER LINE MATCHING

97

SM-LP-5002

SM-LP-5002

J.W. Miller / Bourns

TRANSFORMBER LINE MATCHING SMD

0

LM-NP-1003L

LM-NP-1003L

J.W. Miller / Bourns

TRANSF LINE MATCHING

728

LM-NP-1001-B1L

LM-NP-1001-B1L

J.W. Miller / Bourns

TRANSF LINE MATCHING

71

SM-LP-5001E

SM-LP-5001E

J.W. Miller / Bourns

TRANSF LINE MATCHING SMD

0

SM-LP-5002E

SM-LP-5002E

J.W. Miller / Bourns

TRANSF LINE MATCHING SMD

5446

08379

08379

J.W. Miller / Bourns

TRANSFORMER FOR ST VIPER

0

SM-LP-5001

SM-LP-5001

J.W. Miller / Bourns

TRANSFORMER LINE MATCHING SMD

0

LM-NP-1004L

LM-NP-1004L

J.W. Miller / Bourns

TRANSF LINE MATCHING

0

LM-LP-1003L

LM-LP-1003L

J.W. Miller / Bourns

TRANSF LINE MATCHING

0

LM-NP-1005L

LM-NP-1005L

J.W. Miller / Bourns

TRANSF LINE MATCHING

0

LM-LP-1002L

LM-LP-1002L

J.W. Miller / Bourns

TRANSF LINE MATCHING

0

PM61300-1-RC

PM61300-1-RC

J.W. Miller / Bourns

TRANSFORMER CCFL INVERT 25V SMD

0

PM61300-2-RC

PM61300-2-RC

J.W. Miller / Bourns

TRANSFORMER CCFL INVERT 20V SMD

0

PM61300-3-RC

PM61300-3-RC

J.W. Miller / Bourns

TRANSFORMER CCFL INVERT 15V SMD

0

PM61300-4

PM61300-4

J.W. Miller / Bourns

TRANSFORMER CCFL INVERT 13V SMD

0

PM61300-3

PM61300-3

J.W. Miller / Bourns

TRANSFORMER CCFL INVERT 15V SMD

0

PM61300-5-RC

PM61300-5-RC

J.W. Miller / Bourns

TRANSFORMER CCFL INVRT 10.5V SMD

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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