Power Transformers

Image	Part Number	Description / PDF	Quantity	Rfq
	CTX77-19198-R PowerStor (Eaton)	PWR XFMR GATE DRVR VERT THT 6PIN	0
	CTX00-18936-R PowerStor (Eaton)	PWR XFMR 700UH FERRITE CORE 6PIN	0
	CTX02-16076 PowerStor (Eaton)	PWR XFMR PUSH PULL 1.1MH 10P	0
	CTX01-16525 PowerStor (Eaton)	PWR XFMR FRWD 3.2MH EE75 VERT	0
	CTX02-14989 PowerStor (Eaton)	PWR XFMR CONT MD FLY 100UH	0
	CTX02-14608 PowerStor (Eaton)	PWR XFMR PUSH PULL 675UH	0
	CTX02-13664 PowerStor (Eaton)	PWR XFMR PUSH PULL 310UH 50KH	0
	CTX01-19365-R PowerStor (Eaton)	PWR XFMR FLY 820UH HORZ 9PIN	0
	CTX03-18775-R PowerStor (Eaton)	PWR XFMR BUCK WITH AUX 4UH 5A	0
	CTX01-18874-R PowerStor (Eaton)	PWR XFMR FLYBACK 970UH EPC13 THT	0
	CTX03-18774-R PowerStor (Eaton)	PWR XFMR 30-60VDC 120UH 1.5A	0
	CTX01-16592 PowerStor (Eaton)	PWR XFMR FWD 10MH EER28L THT	0
	CTX01-12069-2 PowerStor (Eaton)	PWR XFMR 3:1 STEPDOWN 147.5UH	0
	CTX01-13768 PowerStor (Eaton)	PWR XFMR DISC MD FLY 9-30V	0
	CTX01-18901-R PowerStor (Eaton)	PWR XFMR 10KHZ 0.85MH 6PIN VERT	0
	CTX01-18885-R PowerStor (Eaton)	PWR XFMR PS11-035 100KHZ 500UH	0
	CTX01-17156 PowerStor (Eaton)	PWR XFMR FLY 200UH 1.65A	0
	CTX01-15364 PowerStor (Eaton)	PWR XFMR CONT MD FLY 285UH	0
	CTX33-17688-R PowerStor (Eaton)	PWR XFMR FLY 10UH 9.05A	0
	CTX02-13063 PowerStor (Eaton)	PWR XFMR FRWD 240-382VDC	0

Power Transformers

1. Overview

Power transformers are static electrical devices that transfer energy between circuits through electromagnetic induction. They enable voltage conversion (step-up/step-down) while maintaining galvanic isolation. These components are fundamental in power distribution systems, renewable energy integration, and industrial equipment, ensuring efficient energy transmission and voltage level adaptation.

2. Main Types and Functional Classification

Type	Functional Characteristics	Application Examples
Distribution Transformers	Medium voltage conversion (1kV-36kV), compact design	Urban power grids, residential areas
Transmission Transformers	High voltage (66kV-800kV), grid stability focus	Substations, long-distance power lines
Instrument Transformers	Measurement and protection (CT/VT types)	Energy metering, relay protection
Specialty Transformers	Custom configurations (furnace, traction, marine)	Industrial furnaces, railway systems

3. Structure and Components

Typical construction includes:

Core: Grain-oriented silicon steel laminations for magnetic flux path
Windings: Primary/secondary copper/aluminum coils with insulation layers
Insulation: Mineral oil, synthetic esters, or solid materials (e.g., epoxy)
Cooling System: Radiator tanks, fans, or forced-oil circulation
Tap Changer: On-load/off-load voltage regulation mechanism
Protection: Buchholz relay, pressure relief valves, temperature sensors

4. Key Technical Parameters

Parameter	Typical Range	Significance
Rated Voltage	230V-800kV	Determines system compatibility
Power Capacity	50kVA-1000MVA	Defines energy throughput
Voltage Ratio	1:1 to 1:20	Specifies transformation ratio
Efficiency	95%-99.5%	Impacts operational costs
Short Circuit Impedance	4%-20%	Affects fault current limitation
Insulation Class	A (105 C) to C (220 C)	Determines thermal endurance

5. Application Areas

Major sectors include:

Electricity distribution networks (urban/rural)
Renewable energy systems (wind/solar grid-tied inverters)
Industrial machinery (CNC, smelters, compressors)
Railway traction systems (15kV-25kV conversion)
Data centers (HVDC conversion systems)

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Features
Siemens Energy	Blue Transformers	Environmentally friendly synthetic ester insulation
Asea Brown Boveri (ABB)	550kV UHV Transformer	500kV DC transmission capability
General Electric (GE)	Premier Series	Smart monitoring with Predictivity analytics
Mitsubishi Electric	330MVA Traction Transformer	Compact design for Shinkansen trains

7. Selection Guidelines

Key considerations:

Voltage levels (primary/secondary requirements)
Load profile (continuous vs. intermittent duty)
Cooling requirements (ONAN/ONAF/OFAF modes)
Environmental conditions (temperature, altitude, seismic zones)
Protection features (IP rating, fire resistance)
Smart grid compatibility (IoT sensor integration)

Case Study: Wind farm grid connection selected 33/132kV ONAF-cooled transformer with 12% impedance to meet fault ride-through requirements.

8. Industry Trends

Current development directions:

Smart transformers with real-time monitoring (IEEE C57.163 compliant)
Amorphous metal core adoption (50% core loss reduction)
Hydrogen-cooled systems for offshore applications
Modular solid-state transformer (SST) prototypes (DOE GRID DATA initiative)
Increased demand for 132kV+ mobile transformers in disaster recovery

Market forecasts indicate 6.2% CAGR through 2030, driven by grid modernization and EV charging infrastructure expansion.