Wholesale 2kw 3000W 5kVA Dry Type 28V 100V 400V Toroidal Transformer

• Customization: Available
• Application: Power, Electronic, Instrument, Lighting, Rectifier, Audio
• Phase: Single
• Model NO.: 20W
• Core: Core-type Transformer
• Cooling Method: Dry-type Transformer
• Winding Type: Multi-winding Transformer
• Certification: ISO9001
• Usage: Single-phase Transformer
• Frequency Characteristics: Low Frequency
• Shape of Core: Ring
• Operating Temperature: -40ºCTO +125ºC
• Storage Temperature: -25ºCTO+85ºC
• Customize: Yes
• Type: Ei/Toroidal
• Installation Method: Vertical/Horizontal/with a Base/with a Cover
• Transport Package: Export Standard Carton and Strong Pallet
• Specification: Toroidal Low Frequency Transformer
• Origin: Zhejiang
• Production Capacity: 200000 PCS/Month
• Package Size: 12.00cm * 12.00cm * 8.00cm
• Package Gross Weight: 2.000kg

Product Description

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Specification	Output Power	Size(unit:mm)						Install PIC
		A	B	C	D	E	F
EI-28x11.5	0.3VA-1.8VA	29. 5	40.0	49.0	25.4	27.0	Φ3.5x5.0	A
		27.0	38.0	46.5	25.4	30.0	Φ3.5x5.0	B
EI-35x11.5	0.8VA-2.1VA	36.5	45.0	63.0	29.8	31.5	Φ3.5x5.0	A
		31.5	40.0	58.0	29.8	37.0	Φ3.5x5.0	B
El-35x13.5	1.0VA-2.7VA	36.7	45.0	55.0	33.2	31.7	Φ3.5x5.0	A
		31.0	40.0	50.0	33.2	37.3	Φ3.5x5.0	B
El-35x15.5	1.5VA-3.5VA	37.0	46.0	55.0	34.2	33.0	Φ3.5x6.5	A
		31.0	40.0	50.0	34.2	37.5	Φ3.5x6.5	B
El-35x17.5	2.5VA-4.5VA	37.0	46.0	55.0	36.5	33.0	Φ3.5x6.5	A
		31.0	40.0	50.0	36.5	37.5	Φ3.5x6.5	B
El-41x16.5	2.0VA-4.5VA	42.7	53.0	62.0	36.5	36.0	Φ4.0x6.5	A
		35.0	46.0	55.0	36.5	43.2	Φ4.0x6.5	B
El-41x20.5	3.0VA-6.0VA	42.7	52.5	62.5	41.2	35.5	Φ4.0x6.5	A
		34.5	46.0	56.0	41.2	43.0	Φ4.0x6.5	B
El-41x24.5	5.0VA-8.5VA	42.7	53.0	62.3	49.0	36.0	Φ4.0x6.5	A
		34.5	46.0	57.0	49.0	43.0	Φ4.0x6.5	B
El-41x26.5	6.0VA-10.0VA	42.7	53.0	62.3	52.0	36.0	Φ4.0x6.5	A
		34.5	46.0	57.0	52.0	43.2	Φ4.0x6.5	B
El-48x20.5	6.0VA-10.0VA	49.7	61.0	69.5	40.0	43.5	Φ4.0x7.5	A
		42.0	53.0	63.5	40.0	51.0	Φ4.0x7.5	B
El-48x25.5	10.0VA-15.0VA	50.0	61.0	70.0	42.0	44.0	Φ4.0x7.0	A
		42.0	53.0	63.5	42.0	51.0	Φ4.0x7.0	B
El-48x30.0	14.0VA-20.0VA	49.7	61.0	73.0	54.4	43.5	Φ4.0x7.0	A
		42.0	53.0	63.0	54.4	51.0	Φ4.0x7.0	B
El-48x35.0	16.0VA-25.0VA	50.0	61.0	74.0	58.5	43.8	Φ4.0x7.0	A
		42.0	53.0	65.0	58.5	51.0	Φ4.0x7.0	B
El-54x24.0	12.0VA-17.0VA	56.0	72.0	86.6	49.4	46.8	Φ4.0x7.0	A
		45.0	62.0	75.6	49.4	58.0	Φ4.0x7.0	B
El-54x28.0	18.0VA-25.0VA	56.0	72.0	86.0	49.4	48.5	Φ4.0x7.0	A
		45.0	62.0	76.0	49.4	58.0	Φ4.0x7.0	B
El-54x30.0	20.0VA-27.0VA	56.0	72.0	86.2	49.8	47.0	Φ4.0x7.0	A
		45.0	62.0	76.0	49.8	58.0	Φ4.0x7.0	B
El-57x19.0	8.0VA-12.0VA	59.0	71.0	83.5	41.0	50.5	Φ5.0x8.0	A
		50.0	62.0	77.6	41.0	61.0	Φ5.0x8.0	B
El-57x24.5	12.0VA-20.0VA	59.5	71.0	85.6	49.8	49.6	Φ5.0x8.0	A
		50.1	62.0	73.5	49.8	61.0	Φ5.0x8.0	B
El-57x30.0	El-57x30.0	59.0	71.0	85.6	52.7	50.4	Φ5.0x8.0	A
		49.9	62.0	77.6	52.7	60.0	Φ5.0x8.0	B
El-57x35.0	30.0VA-38.0VA	59.5	71.0	83.5	59.0	52.0	Φ5.0x8.0	A
		49.8	62.0	73.5	59.0	61.0	Φ5.0x8.0	B
El-57x40.0	33.0VA-43.0VA	59.5	71.0	83.5	64.0	52.0	Φ5.0x8.0	A
		49.8	62.0	73.5	64.0	61.0	Φ5.0x8.0	B
EI-60x25.0	16.0VA-22.0VA	62.2	72.0	83.0	50.0	53.0	Φ5.0x8.0	A
		51.0	62.0	74.5	50.0	63.3	Φ5.0x8.0	B
El-60x30.0	22.0VA-33.0VA	62.2	72.0	84.0	53.0	54.2	Φ5.0x8.0	A
		51.5	62.0	75.0	53.0	63.5	Φ5.0x8.0	B
El-66x28.0	22.0VA-30.0VA	68.2	82.0	98.0	56.0	58.3	Φ5.0x8.0	A
		58.0	71.0	83.6	56.0	70.4	Φ5.0x8.0	B

El-66x32.0	33.0VA-40.0VA	68.2	82.0	94.3	60.0	58.3	Φ5.0x8.0	A
		58.1	71.0	84.0	60.0	70.0	Φ5.0x8.0	B
El-66x36.0	40.0VA-55.0VA	68.2	82.0	98.5	65.0	57.8	Φ5.0x8.0	A
		58.0	71.0	83.5	65.0	71.0	Φ5.0x8.0	B
El-66x40.0	55.0VA-65.0VA	68.2	81.0	94.0	75.0	58.0	Φ5.0x8.0	A
		58.0	72.0	83.5	75.0	71.0	Φ5.0x8.0	B
El-66x45.0	65.0VA-80.0VA	68.2	82.0	93.0	80.0	58.0	Φ5.0x8.0	A
		58.1	71.0	82.5	80.0	72.0	Φ5.0x8.0	B
El-76x35.0	35.0VA-65.0VA	78.5	90.0	101.0	65.0	67.5	Φ5.0x8.0	A
		66.5	81.0	95.0	50.0	80.5	Φ5.0x8.0	B
El-76x40.0	55.0VA-80.0VA	79.0	92.0	104.0	70.0	66.9	Φ5.0x8.0	A
		66.5	81.0	95.0	70.0	81.0	Φ5.0x8.0	B
El-76x42.5	70.0VA-100.0VA	79.0	92.0	105.0	75.0	68.0	Φ5.0x8.0	A
		66.5	81.0	95.0	75.0	81.0	Φ5.0x8.0	B

Specification	Output power	Size(unit:mm)							Install PIC
		A	B1	B2	C	D	E	F
EI-76x56.0	90.0VA-150VA	76.0	64.0	74.0	86.0	95.0	69.0	Φ5.0x8.0	C
		63.5	50.5	74.0	86.0	95.0	78.0	Φ5.0x8.0	D
EI-76x66.0	120VA-190VA	76.0	64.0	84.0	96.0	105.0	69.0	Φ5.0x8.0	C
		63.5	50.5	84.0	96.0	105.0	78.0	Φ5.0x8.0	D
EI-86x43.0	70.0VA-120VA	86.0	71.0	68.0	83.0	75.0	71.5	Φ5.0x8.0	C
		71.5	57.0	68.0	83.0	75.0	87.0	Φ5.0x8.0	D
EI-86x45.0	110VA-150VA	86.0	71.0	70.0	85.0	80.0	72.0	Φ5.0x8.0	C
		71.5	57.0	70.0	85.0	80.0	87.0	Φ5.0x8.0	D
EI-86x55.0	130VA-200VA	86.0	71.0	80.0	95.0	85.0	73.0	Φ5.0x8.0	C
		71.5	57.0	80.0	95.0	85.0	88.0	Φ5.0x8.0	D
EI-96x32.0	55VA-80VA	96.0	80.0	57.0	72.0	55.0	82.0	Φ5.0x8.0	C
		80.0	64.0	57.0	72.0	55.0	96.5	Φ5.0x8.0	D
EI-96x40.0	100VA-150VA	96.0	80.0	65.0	80.0	65.0	82.0	Φ5.0x8.0	C
		80.0	64.0	65.0	80.0	65.0	96.5	Φ5.0x8.0	D
EI-96x45.0	130VA-180VA	96.0	80.0	70.0	85.0	70.0	82.0	Φ5.0x8.0	C
		80.0	64.0	70.0	85.0	70.0	96.5	Φ5.0x8.0	D
EI-96x50.0	160VA-220VA	96.0	80.0	75.0	90.0	75.0	82.0	Φ5.0x8.0	C
		80.0	64.0	75.0	90.0	75.0	96.5	Φ5.0x8.0	D
EI-96x56.0	200VA-250VA	96.0	80.0	82.0	97.0	82.0	82.0	Φ5.0x8.0	C
		80.0	64.0	82.0	97.0	82.0	96.5	Φ5.0x8.0	D

EI-105x38.0	90.0VA-130VA	105.0	87.5	56.0	68.0	63.0	91.0	Φ5.0x10.0	C
		87.5	70	56.0	68.0	63.0	105.0	Φ5.0x10.0	D
El-105x56.0	130VA-280VA	105.0	87.5	74.0	86.0	81.0	91.0	Φ5.0x10.0	C
		87.5	70	74.0	86.0	81.0	105.0	Φ5.0x10.0	D
EI-114x50.0	200VA-260VA	114.0	95.0	78.0	94.0	90.0	96.0	Φ5.0x10.0	C
		96.0	77.0	78.0	94.0	90.0	114.0	Φ5.0x10.0	D
El-114x60.0	250VA-360VA	114.0	95.0	88.0	104.0	110.0	96.0	Φ5.0x10.0	C
		96.0	77.0	88.0	104.0	110.0	114.0	Φ5.0x10.0	D
EI-114x70.0	350VA-500VA	114.0	95.0	98.5	114.5	120.0	96.0	Φ5.0x10.0	C
		96.0	77.0	98.5	114.5	120.0	114.0	Φ5.0x10.0	D
EI-133x50.0	250VA-360VA	133	111	75	100	105	111	Φ5.0x10.0	C
		111	89	75	100	105	133	Φ5.0x10.0	D
EI-133x60.0	300VA-600VA	133	111	85	110	115	111	Φ5.0x10.0	C
		111	89	85	110	115	133	Φ5.0x10.0	D
EI-133x70.0	500VA-800VA	133	111	95	120	120	111	Φ5.0x10.0	C
		111	89	95	120	120	133	Φ5.0x10.0	D
EI-152x50.0	400VA-600VA	152	127	82	110	113	127	Φ6.0x15.0	C
		127	102	82	110	113	152	Φ6.0x15.0	D
El-152x60.0	500VA-800VA	152	127	92	120	123	127	Φ6.0x15.0	C
		127	102	92	120	123	152	Φ6.0x15.0	D
El-152x70.0	700VA-1000VA	152	127	102	130	133	127	Φ6.0x15.0	C
		127	102	102	130	133	152	Φ6.0x15.0	D
El-162x50.0	500VA-700VA	162	135	84	113	115	135	Φ6.0x18.0	C
		135	108	84	113	115	162	Φ6.0x18.0	D
El-162x60.0	700VA-900VA	162	135	94	123	125	135	Φ6.0x18.0	C
		135	108	94	123	125	162	Φ6.0x18.0	D
El-162x70.0	800VA-1200VA	162	135	104	130	133	135	Φ6.0x18.0	C
		135	108	104	130	133	162	Φ6.0x18.0	D
El-162x85.0	1000VA-1800VA	162	135	120	145	150	135	Φ6.0x18.0	C
		135	108	120	145	150	162	Φ6.0x18.0	C
El-162x90.0	1600VA-2000VA	162	135	125	150	155	135	Φ6.0x18.0	D
		135	108	125	150	155	162	Φ6.0x18.0	C

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Specification

Ⅰ. Specifications and Selection

1 Q: We need a 220V to 12V step down transformer. What specifications will be needed for production?

A: Please provide the following key parameters, the more detailed the better:

Input Voltage (Primary Voltage): For example, AC 220V. Is there an allowable fluctuation range (e.g. ±10%)?

Output Voltage and Current (Secondary Voltage & Current): For example, AC 12V, what current (A) or power (VA/W) is needed? If there are multiple output groups, please list the voltage current of each group.

Rated Power (Rated Power): The unit is VA (volt-ampere) or W (watt). This is one the most important parameters, determining the transformer's load-carrying capacity.

Frequency (Frequency): 50Hz or 60Hz?

Construction (Construction): Is it toroidal, EI type (frame-type), or R-type? Is there a special installation method (such vertical, horizontal, with a base, with a cover)?

Insulation Grade (Insulation Class): For example, Class A (105°C), Class (120°C), Class B (130°C), which is related to the transformer's heat resistance and lifespan.

 

2. Q: What is the difference between the power unit VA and W? How should I choose?

A: For purely resistive loads (such light bulbs, heating tubes), VA ≈ W. For inductive or capacitive loads (such as motors, appliances), W (real power) < VA ( power). To ensure safety, please select according to the apparent power (VA) of the load and leave a margin of 20%-30%. For example, 100W motor, it is recommended to choose a transformer of 120VA-150VA.

 

3. Q: Toroidal transformer or traditional EI transformer, which one should I choose?

A: The main differences are as follows, please choose according your priorities:

Characteristics	Toroidal transformer	EI Transformer
Efficiency	High (no air gap in magnetic circuit)	Lower
Leakage Magnetism/ Interference	Very little (magnetic field enclosed)	Larger
Volume and Weight	Smaller and lighter (for the same power)	Larger and heavier
Production Process	More complex	Mature and simple, easy to maintain
Application Scenarios	High-end audio, precision instruments occasions with high EMI requirements	General industrial equipment, conventional power supplies, cost-sensitive applications
Cost	Higher	Lower, cost-effective

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