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Specifications

Condition New
Frequency 0-50Hz, 100-200Hz, 200-400Hz
Tensile Strength 125-150Mpa, 175-200Mpa, 75-100Mpa
Features Easy To Install, Four Times Stronger, Superior Finish
Warrenty 5yrs
Automation Grade Automatic
Production Power 100-250kw, 250-500kw, 50-100kw, 500-750kw

Specifications

Application Industrial Use
Condition New
Frequency 50hz, 60hz
Tensile Strength 0-25Mpa, 125-150Mpa, 175-200Mpa
Features Easy To Install, Four Times Stronger, Superior Finish

-SMD IFT coils for TV receivers and AM and FM radios
-Variable inductor and coils with wide range of inductance
-Designed for application in different types of circuits

-IFT coils with internal capacitors
-SMD IFT coils for radio receivers and AM and FM radios
-IFT variable coils for wireless communication system and remotecontrol toy/equipment
-IFT adjustable coils with wide range of inductance
-Designed for application in different types of circuits
-IFT coils with internal capacitors
-EC, EE.EI and PQ type high frequency switch transformer EP type magnet shielding switch transformer
-RM type communication filter, aux power transformer
-ET, FT type linearity G (jar shape) switch transformer
-DR (I) type transformer T (ring) iron power core, DC filter inductorRM series: RM-4, 5, 6, 8, 10, 12, 14
ISO UL Certification,
Welcome Custom

Common mode choke
Electric choke coil
Two ring core spider web coil
Features:
Vertical base-mounted
Low cost and high current
Closed magnetic circuit for lowest EMI
Original manufacturer
ISO 9001:2008
With UL qualification
Keeps 4â?° disqualification rate
3-5pcs free samples
Short lead time
100% test before shipping
International standard specification
Professional packing
300K per month
Conform to CE, RoHS, FCC
OEM/ODM accepted
Applications:
Copying machine, display monitor, ADSL modem, gaming machine, color TV, video camera, air conditioner, refrigerator, laundry machine, microwave oven and car electronics

Ef type high frequency transformer
-smd ift coils for tv receivers and am and fm radios
-variable inductor and coils with wide range of inductance
-designed for application in different types of circuits
-ift coils with internal capacitors
-smd ift coils for radio receivers and am and fm radios

-ift variable coils for wireless communication system and remotecontrol toy/equipment
-ift adjustable coils with wide range of inductance
-designed for application in different types of circuits
-ift coils with internal capacitors
-ec, ee.Ei and pq type high frequency switch transformer ep type magnet shielding switch transformer
-rm type communication filter, aux power transformer
-et, ft type linearity g (jar shape) switch transformer
-dr (i) type transformer t (ring) iron power core, dc filter inductorrm series: rm-4, 5, 6, 8, 10, 12, 14
Iso ul certification,
Welcome custom



Company with ul qualification
Original manufacturer
Iso 9001:2008
3-5pcs free samples
Short lead time
100% test before shipping
International standard specification
Professional packing
300k per month
Conform to ce, rohs, fcc
Oem/odm accepted

transformer, motor, glass tray, capacitor, diode, used for microwave oven
Supplying microwave parts, for example: Magnetron, crisp plate, transformer, motor, glass tray, capacitor, diode, etc used for microwave oven, microwave equipment .

Our capability:
-we can design, manufacture, testing various kinds of transformers up to 5000kva according to iec standards, ansi standards, bs standards, en61558 standards and technical specifications from client.
-we have exported our transformers to usa over $700, 000 every year.

Our major products:
-oil immersed distribution transformers up to 5000kva.
-dry type transformers up to 5000kva.
-isolation transformers: three phase from 100va to 5000kva and single phase from 25va to 500kva.
-auto transformers: three phase from 100va to 5000kva and single phase from 25va to 500kva.
-medical transformers up to 1600kva.
-toroidal transformers up to 100kva.
-auto voltage regulator(voltage stabilizer) up to 5000kva.
-eps, ups transformers.
-rectifier transformers.
-control transformers.
-reactor is included:
Parallel, serial reactor. Filter reactor. Starting reactor. Dc reactor. High frequency resonant inductance.

Brief Description

The insulation non-encapsulated dry-type power transformer is approved by America technology. With the advantages of safety, reliability, environmental friendliness, energy saving, fire and explosion protection, humidity and pollution resistance, strong overload capability, small volume and simple maintenance, and main performance indexes superior to domestic standards such as advanced design, reasonable structure and beautiful appearance, the product is a brand new transformer value-added scheme and is a new-generation energy-saving, safe, green and environmentally-friendly high-tech product!

We have passed ISO9001:2015,CE,SGS approval and IEC report

1).Features:
Has a strong anti-interference, distributed capacitance, impedance, attenuation of low transmission, firm
structure,can fine-tune the inductance, etc., are widely used in fax
machines, PBX.

2). Applicable frequency range: 20 to 100kHz :
Operating frequency: higher than 200kHz
High magnetic flux and low loss magnetic materials
With low leakage inductance and high efficiency .

3).Applications:
PCB circuits, computer, TV, monitor, scanner, duplicator, mobile adapters, printer and other equipments and instruments.
UL insulation system for Class B (130), F (155), H (180)

4). Can make other customized Ferrite transformers:
Power range: core type using N67 grade material
500: ETD54, ETD59 and E65

5)Advantage:
1.UL, CUL, CE, ISO9001:2015
2.We offer custom-made transformers, OEM and ODM are welcome
3.We deliver the quality you expect at consistently competitive prices
4.Transformer quality lifetime:10 Years.
5.Specialty Sales service:5 -10 Years
6.Transformers Test: 100% test before the shipment

About us:
1). Tianjin Grewin Technology Co.,ltd. has always laying great emphasis on our core business philosophy "Quality and Honesty First ".
Grewin Mission: Growing together side by side,Mutual success hand in hand.

Production:
The following picture showed you about all finished transformer production line and package with export standard carton and strong pallets:
RM Type High Frequency Transformer for Electronic Usage
2).Terms of Shipment:
Within 10 working days after received related prepayment or L/C.

3).Payment terms:
(1). T/T 100% or 50% deposit by T/T in advance, balance amount to be paid 7 days before
delivery.
(2). By irrevocable L/C at sight, to be issued immediately against confirmed order.
(3). Payment by T/T, if order amount is less than USD 20,000.

4).Flow chart of trading activities:

NO
Step
Days need

1
Request for quotation
1 day

2
Making quotations
1 day

3
Offer and counter offer
3 days

4
Sending and receiving samples
3-10 days

5
Sample confirmation
3 days

6
Placing a firm order
1 day

7
Paying and receiving the down payment
1-4 day

8
Factory production & Quality inspection
15-20 days

9
Paying and receiving the balance
4 days

10
Delivery of goods
1 days

1. Technical parameters.

Toroidal Transformer I
Power Thermal Fuse Current Fuse Dimension (mm) Approval Mark
GWB25VA 135 ºC 250V 2A 250V T 2A 80*35 CE UL TUV CQC
GWB30VA 135 ºC 250V 2A 250V T 2A 83*35 CE UL TUV CQC
GWB40VA 135 ºC 250V 2A 250V T 2A 87*35 CE UL TUV CQC
GWB50VA 135 ºC 250V 2A 250V T 2A 93*34 CE UL TUV CQC
GWB60VA 135 ºC 250V 2A 250V T 2A 93*35 CE UL TUV CQC
GWB80VA 135 ºC 250V 2A 250V T 2A 102*35 CE UL TUV CQC
GWB105VA 135 ºC 250V 2A 250V T 2A 114*38 CE UL TUV CQC
GWB120VA 135 ºC 250V 2A 250V T 2A 113*41 CE UL TUV CQC
GWB140VA 135 ºC 250V 2A 250V T 2A 114*42 CE UL TUV CQC
GWB150VA 135 ºC 250V 2A 250V T 2A 117*43 CE UL TUV CQC
GWB160VA 135 ºC 250V 5A 250V T 5A 120*43 CE UL TUV CQC
GWB180VA 135 ºC 250V 5A 250V T 5A 125*42 CE UL TUV CQC
GWB200VA 135 ºC 250V 5A 250V T 5A 124*49 CE UL TUV CQC
GWB220VA 135 ºC 250V 5A 250V T 5A 127*50 CE UL TUV CQC
GWB240VA 135 ºC 250V 5A 250V T 5A 129*48 CE UL TUV CQC
GWB250VA 135 ºC 250V 5A 250V T 5A 130*52 CE UL TUV CQC
GWB260VA 135 ºC 250V 5A 250V T 5A 130*53 CE UL TUV CQC
GWB280VA 135 ºC 250V 5A 250V T 5A 138*45 CE UL TUV CQC
GWB300VA 135 ºC 250V 5A 250V T 10A 138*54 CE UL TUV CQC
GWB320VA 135 ºC 250V 5A 250V T 10A 138*54 CE UL TUV CQC
GWB340VA 135 ºC 250V 5A 250V T 10A 138*54 CE UL TUV CQC
GWB360VA 135 ºC 250V 5A 250V T 10A 142*55 CE UL TUV CQC
GWB380VA 135 ºC 250V 5A 250V T 10A 146*54 CE UL TUV CQC
GWB400VA 135 ºC 250V 5A 250V T 10A 148*56 CE UL TUV CQC
GWB420VA 135 ºC 250V 5A 250V T 10A 148*56 CE UL TUV CQC
GWB440VA 135 ºC 250V 5A 250V T 10A 148*60 CE UL TUV CQC
GWB460VA 135 ºC 250V 5A 250V T 10A 149*64 CE UL TUV CQC
GWB480VA 135 ºC 250V 5A 250V T 10A 153*59 CE UL TUV CQC
GWB500VA 135 ºC 250V 5A 250V T 10A 155*62 CE UL TUV CQC


2. We have attained VDE,UL,CE,ISO9000 approval .we guarantee quality is the first.
Test process
1 .No-load test (included no-load voltage,no load current and no load loss)

2.iInductive voltage test

3. Load test (load voltage and temperature rise

4. Temperature rise test .

5.Insulated resistance

6.Hi-pot test

7.Leakage inductance test

8.DC resistance test

9.Surface inspection.

3.customized audio toroidal transformer and solar energy transformer Application:
220V 24V Toroidal Power Transformer

1). Application:

1. audio equipment
2. electric control
3. computer
4. solar device
5.telecommunications
6.high-end and middle-end vedio etc

2). Advantages:

1.High quality 100% copper core

2.a full range of toroidal transformer
3.Specially sales and technical services:5-10Years

4.With 14 years' producing history in transformer industry

5.our company have cooperated with many customers around the world and gained good reputation at home and abroad.

We have passed ISO9001:2015,CE,SGS approval and IEC report

PQ type Transformer Parameters

Brand Name; GREWIN Transformer Core structure;
Laminated
Coil number; Autotransformer
Place of Origin; China Coil Material; ferrite Coil structure; toroidal
Usage; High Frequency Model : PQ Phase; single
Application; High-frequency switching power supply and High-frequency inverter power transformer. PBX
Deliver time; Within 15 working days Package; Customized standard cartons or export standard carton with strong pallets
ATTENTION; YOU CAN CUSTOMIZED ALL SERIERS ACCORDING TO YOUR REQUERMENT

1).Features:
Has a strong anti-interference, distributed capacitance, impedance, attenuation of low transmission, firm
structure,can fine-tune the inductance, etc., are widely used in fax
machines, PBX.

2). Applicable frequency range: 20 to 100kHz :
Operating frequency: higher than 200kHz
High magnetic flux and low loss magnetic materials
With low leakage inductance and high efficiency .

3).Applications:
PCB circuits, computer, TV, monitor, scanner, duplicator, mobile adapters, printer and other equipments and instruments.
UL insulation system for Class B (130), F (155), H (180)

4). Can make other customized Ferrite transformers:
Power range: core type using N67 grade material
500: ETD54, ETD59 and E65

5)Advantage:
1.UL, CUL, CE, ISO9001:2015
2.We offer custom-made transformers, OEM and ODM are welcome
3.We deliver the quality you expect at consistently competitive prices
4.Transformer quality lifetime:10 Years.
5.Specialty Sales service:5 -10 Years
6.Transformers Test: 100% test before the shipment

Model NO.: 50VA-5000VA GWB140321 Usage: Single-phase Transformer Frequency Characteristics: Power Frequency Shape of Core: Ring Brand: Grewin Toroidal Transformer Power: 50va-5000va: Universal Purpose Low No-Load Losses: Low Mechanical Hum Low Magnetic Leakage: High Efficiency Power Factor: 0.9 to 0.98: Encapsulated by Iron Shell: CE, RoHS, SGS, Cesi a Horizontal: Sunk, Side Type, and Bridge: Phase: Single Brand Name: Gw: Place of Origin: Tianjin, China (Mainland) Trademark: Grewin Toroidal Transformer Transport Package: Carton Specification: CE, RoHS, SGS, CESI and ISO9001 Origin: Tianjin HS Code: 85043190

Tianjin Grewin Technology Co.,ltd. Clamp-on Flexible Rogowski coil current transformer' are designed for easy installed in tight spaces and without the need for dismantling the primary busbar or cables.
1. Features:
Flexible and light weights_
Easy & quick installation in tight spaces
No danger from open-circuited secondary
No core saturation or damage if overloaded
excellent linearity
Multi- size are available
2. Applications:
Power quality monitoring
Power meters
Smart logger
Energy sub-meters
Distributed measurement systems
3.Note: we-Grewin Manufacture can produce current transformer,split core CT,clamp on sensors, toroidal CT, minature CT, Flexible Rogowski coil with excellent performance. We have recieved IEC,ROHS,CE standard.

Tianjin Grewin Technology Co.,ltd. Clamp-on Flexible Rogowski coil current transformer' are designed for easy installed in tight spaces and without the need for dismantling the primary busbar or cables.
1. Features:
Flexible and light weights_
Easy & quick installation in tight spaces
No danger from open-circuited secondary
No core saturation or damage if overloaded
excellent linearity
Multi- size are available
2. Applications:
Power quality monitoring
Power meters
Smart logger
Energy sub-meters
Distributed measurement systems
3.Note: we-Grewin Manufacture can produce current transformer,split core CT,clamp on sensors, toroidal CT, minature CT, Flexible Rogowski coil with excellent performance. We have recieved IEC,ROHS,CE standard.

Name:Power Supply Lighting Transformer 110V
We have abtained ISO9001:2015,IEC,CE approval .we guarantee quality is the first.

1. technical parameters.

Toroidal Transformer I
Power Thermal Fuse Current Fuse Dimension (mm) Approval Mark
GWB25VA 135 ºC 250V 2A 250V T 2A 80*35 CE UL TUV CQC
GWB30VA 135 ºC 250V 2A 250V T 2A 83*35 CE UL TUV CQC
GWB40VA 135 ºC 250V 2A 250V T 2A 87*35 CE UL TUV CQC
GWB50VA 135 ºC 250V 2A 250V T 2A 93*34 CE UL TUV CQC
GWB60VA 135 ºC 250V 2A 250V T 2A 93*35 CE UL TUV CQC
GWB80VA 135 ºC 250V 2A 250V T 2A 102*35 CE UL TUV CQC
GWB105VA 135 ºC 250V 2A 250V T 2A 114*38 CE UL TUV CQC
GWB120VA 135 ºC 250V 2A 250V T 2A 113*41 CE UL TUV CQC
GWB140VA 135 ºC 250V 2A 250V T 2A 114*42 CE UL TUV CQC
GWB150VA 135 ºC 250V 2A 250V T 2A 117*43 CE UL TUV CQC
GWB160VA 135 ºC 250V 5A 250V T 5A 120*43 CE UL TUV CQC
GWB180VA 135 ºC 250V 5A 250V T 5A 125*42 CE UL TUV CQC
GWB200VA 135 ºC 250V 5A 250V T 5A 124*49 CE UL TUV CQC
GWB220VA 135 ºC 250V 5A 250V T 5A 127*50 CE UL TUV CQC
GWB240VA 135 ºC 250V 5A 250V T 5A 129*48 CE UL TUV CQC
GWB250VA 135 ºC 250V 5A 250V T 5A 130*52 CE UL TUV CQC
GWB260VA 135 ºC 250V 5A 250V T 5A 130*53 CE UL TUV CQC
GWB280VA 135 ºC 250V 5A 250V T 5A 138*45 CE UL TUV CQC
GWB300VA 135 ºC 250V 5A 250V T 10A 138*54 CE UL TUV CQC
GWB320VA 135 ºC 250V 5A 250V T 10A 138*54 CE UL TUV CQC
GWB340VA 135 ºC 250V 5A 250V T 10A 138*54 CE UL TUV CQC
GWB360VA 135 ºC 250V 5A 250V T 10A 142*55 CE UL TUV CQC
GWB380VA 135 ºC 250V 5A 250V T 10A 146*54 CE UL TUV CQC
GWB400VA 135 ºC 250V 5A 250V T 10A 148*56 CE UL TUV CQC
GWB420VA 135 ºC 250V 5A 250V T 10A 148*56 CE UL TUV CQC
GWB440VA 135 ºC 250V 5A 250V T 10A 148*60 CE UL TUV CQC
GWB460VA 135 ºC 250V 5A 250V T 10A 149*64 CE UL TUV CQC
GWB480VA 135 ºC 250V 5A 250V T 10A 153*59 CE UL TUV CQC
GWB500VA 135 ºC 250V 5A 250V T 10A 155*62 CE UL TUV CQC


2. Test process
1 .No-load test (included no-load voltage, no load current and no load loss)

2.iInductive voltage test

3. Load test (load voltage and temperature rise

4. Temperature rise test .

5.Insulated resistance

6.Hi-pot test

7.Leakage inductance test

8.DC resistance test

9.Surface inspection.

3.customized audio toroidal transformer and solar energy transformer Application:
1)
1. audio equipment
2. electric control
3. computer
4. solar device
5.telecommunications
6.high-end and middle-end vedio etc

2). Advantages:

1.High quality 100% copper core

2.a full range of toroidal transformer
3.Specially sales and technical services:5-10Years

4.With 14 years' producing history in transformer industry

5.our company have cooperated with many customers around the world and gained good reputation at home and abroad.

We have passed ISO9001,CE,SGS approval and IEC report

EFD type Transformer Parameters

Model Pin Dimension
A B C D E
EFD-12 8 6 17 20 3.0 13.5
EFD-15 10 7.3 18.2 21.35 2.5 15
EFD-15 10 7.5 19.3 22.6 3.0 16.7
EFD-20 10 9.4 25.3 27.7 3.75 21.7
EFD-20 12 9.7 24 26.8 3 20
EFD-25 10 13.4 29.7 35.4 5 25
EFD-25 10 12.6 29.7 31.5 5 25
EFD-30 12 12.6 31.6 35.5 5 30

1).Features:
Has a strong anti-interference, distributed capacitance, impedance, attenuation of low transmission, firm
structure,can fine-tune the inductance, etc., are widely used in fax
machines, PBX.

2). Applicable frequency range: 20 to 100kHz :
Operating frequency: higher than 200kHz
High magnetic flux and low loss magnetic materials
With low leakage inductance and high efficiency .

3).Applications:
PCB circuits, computer, TV, monitor, scanner, duplicator, mobile adapters, printer and other equipments and instruments.
UL insulation system for Class B (130), F (155), H (180)

4). Can make other customized Ferrite transformers:
Power range: core type using N67 grade material
500: ETD54, ETD59 and E65

5)Advantage:
1.UL, CUL, CE, ISO9001:2008
2.We offer custom-made transformers, OEM and ODM are welcome
3.We deliver the quality you expect at consistently competitive prices
4.Transformer quality lifetime:10 Years.
5.Specialty Sales service:5 -10 Years
6.Transformers Test: 100% test before the shipment

1).Terms of Shipment:
Within 10 working days after received related prepayment or L/C.

2).Payment terms:
(1). T/T 100% or 50% deposit by T/T in advance, balance amount to be paid 7 days before
delivery.
(2). By irrevocable L/C at sight, to be issued immediately against confirmed order.
(3). Payment by T/T, if order amount is less than USD 20,000.

3).Flow chart of trading activities:

NO
Step
Days need

1
Request for quotation
1 day

2
Making quotations
1 day

3
Offer and counter offer
3 days

4
Sending and receiving samples
3-10 days

5
Sample confirmation
3 days

6
Placing a firm order
1 day

7
Paying and receiving the down payment
1-4 day

8
Factory production & Quality inspection
15-20 days

9
Paying and receiving the balance
4 days

10
Delivery of goods
1 days

We have passed ISO9001:2015,CE,SGS approval and IEC report

1.Technical parameters

Power Input Voltage(V) Output Voltage(V) Dimension
OD*H(mm) Weight (kg)
GWB50VA 220V (230V) 12V 80*38 0.74
GWB100VA 220V (230V) 12V 95*45 1.25
GWB200VA 220V (230V) 12V 112*52 2.05
GWB250VA 220V (230V) 12V 118*54 3.36
GWB500VA 220V (230V) 12V 140*65 4.2
GWB1000VA 220V (230V) 12V 170*75 7.2
GWB1500VA 220V (230V) 12V 180*85 9.75
GWB2000VA 220V (230V) 12V 185*105 12
GWB3000VA 220V (230V) 12V 200*120 16.6
GWB5000VA 220V (230V) 12V 230*135 24

2. We have abtained VDE,UL,CE,ISO9000 approval .we guarantee quality is the first.
Test process:
1). No-load test (included no-load voltage,no load current and no load loss)

2). IInductive voltage test

3). Load test (load voltage and temperature rise

4). Temperature rise test .

5). Insulated resistance

6).Hi-pot test
7).Leakage indutance test

8).DC resistance test

9).Surface inspection.
3.customized audio toroidal transformer and solar energy transformer Application:
Grewin Electrical Supply Toroidal Transformer with ISO9001: 2015

1). Application:

1. audio equipment
2. electric control
3. computer
4.instrument
5.telecommunications
6.high-end and middle-end vedio etc

2). Advantages:

1.High quality 100% copper core
2.a full range of toroidal transformer
3.Specially sales and technical services:5-10Years
4.With 14 years' producing history in transformer induatry
5.our company have cooperated with many customers around the world and gained good reputation at home and abroad.
3).Note
The above-mentioned toroidal transformer is frequently-used, we can also manufacture the products by customer design. And the specification is for reference, if has the change further, please take the material object as the standard.
4).GREWIN'S Dimension :
External diameter: 40mm-300mm, height :13mm-130mm, Efficiency: 75-98%
we can design the appropriate products according to customers' requirments such as installation dimension, input and output voltage,power...etc.)

4.product procedure

The following picture showed you about all finished toroidal transformer production line and package with export standard carton and strong pallets:
Grewin Electrical Supply Toroidal Transformer with ISO9001: 2015

We have passed ISO9001:2015,CE,SGS approval and IEC report

Remark:
A. D refers to the volume of a corresponding transformer, which will be replaced with a digit. For the transformer with a single winding, the corresponding max. volume can be reached; for the transformer with two or more windings, the corresponding volume will be reduced properly.
B. Being a tendency of future pin transformer, it is applide with our best self-made toroidal core (Poâ?¤0.9W/Kg) in the result of High Efficiency, Low Power Loss and Low Temperature-rise to be Green, Energy-saving & Environment-friendly.
C. Attributed to our Patent Technology, excluding the pins distribution mentioned above, the pins distribution can be freely adjusted by following customer's advice.
D. Nice Appearance, Small Size, Moisture Proof & Mould Prevention.
E. Pins Quantity can be reduced or increased based on your requirement.

Minature Transformers:
The dimension of the Control Transformer Usage &Toroidal Coil Structure step-up auto-transformator 380V to 200V
The Partial List of GW-B Series Toroidal Transformers with Cable and Mounting Holes:

1. Installation:
Horizontal (non-conventional-type base plate), sunk, side type, and bridge.

2.Application:
Especially low-hum and low-dispersing construction
Low-level of induction
High-grade design casing possible
Statically shield winding and magnetical shield winding optional
Be used widely such as audio equipment,communication,new energy areas,Electrical control,Cable TV network etc.

3.Equipment:
Over 50 sets toroidal/annular/ ring coil winding machines, 3 EI type transformer lines, 2 sets of vacuum annealing furnaces, A set of nitrogen and hydrogen production equipment as below:
. Automatic Winding Machine
. Semi-automatic Winding Machine
. Toroidal Winding Machine
. Insert Lamination Machine
. Wave Soldering Machine
. Plastic Termal Ultraviolet Machine
. Domino Ink Jet Printing Machine
Transformer Multitester for High & Low Frequency
Layer Insulation Withstand Voltage Tester

4.Warning
Under no circumstances should both ends of the fixing bolt simultaneously contact the metal chassis or framework as this would create a potentially dangerous 'shorted-turn'.

5.Certificate
We have abtained CE CQC RoHs UL ISO9001:2015,SGS and IEC approval. We guarantee quality is the first.

Test process:
1). No-load test (included no-load voltage,no load current and no load loss)
2). IInductive voltage test
3). Load test (load voltage and temperature rise
4). Temperature rise test .
5). Insulated resistance
6).Hi-pot test
7).Leakage indutance test
8).DC resistance test
9).Surface inspection.

Application:
1). audio equipment
2). electric control
3). computer
4).instrument
5).telecommunications
6).high-end and middle-end vedio etc

1.We have abtained IEC,VDE,UL,CE,ISO9000 approval .we guarantee quality is the first.

2.waterproof Transformer's Dimension Sheet:

(Note:Rated 105VA-1000VA for devices 105VA-1000VA watts or less,

GWET-105 means 105VA size )

3.Waterproof outdoor toroidal Transformer's Spcification:

1).WORKING AND SAFETY PROTEETION
Eiectrostatic Shield Magnetic Shield
TemperatureProtection OverCurrent Protection

2).INSULATION
Insulation resistance test(type test):Pri.~sec. 500V DC 100 MΩMIN.
HI-POT TEST(100% test):Pass ourdielectric strength test, without any breakdown

Pri.~sec. AC 3.8kV for 5 seconds (leakage current 5mAMAX)

3).TEMPERATURE RISE
Ta=25ºCTest by resistance method At rated load
PRI.& SEC. WINDINGS'TEMPERATURE RISE 75ºCMAX.

4).MAJOR MEASUREMENT FACILITIES:
HI-POT TESTER: CJ2670
INSULATION-RESISTANCE METER: ZC-7
VOL TMETER: T19-V
DC-RESISTANCE METER: QJ44
AMPEREMETER: T19/1-A



5). MAIN PARAMETERS:
Input Voltage:AC 220V 230v 110v (Define the voltage)
Output voltage:AC 12V / 24V (Define the voltage)
Power range:105VA-1KVA



6) Waterproof toroidal Transformer's materials:

* Annular core: Cold rolling directional silicon steel
* Insulation protection: Mylar
* Core Insulation: Polyester 7C
* Primary/Secondary Winding: Enamelled copper wire
* Terminal cannula: PVC canula
* Termial uderlay: Polyester 19C
* Temperature Protection: Thermal Switch
* Pri.Insulation: Polyester 7C
* Insulation protection: Mylar
* Coating insulation: Polyester 5C
* Lead: UL WIRE
* Potted resin: Potted resin
* Body: PP+GFRP

7)Standard conditions and components:

* Transformer should meet "Short-circuit-proof safety isolating transformer (inherently

or non-inherently) IEC 61558-2-6:09"

* Thermal Switch 17AM 211 120 °C Sensata Technologies or equivalent (UL E15962)

* Thermal Fuse A7-5A-F 5A/138 °C Aupo Electronics or equivalent (UL E140847)

* Transformer is double insulated (Class II) with Insulation Class B 120°C

* Insulation tests 500VDC 100M ohm min and 4kV for 5 seconds at 5mA max leakage current

4.Application:
Grewin Toroidal Waterproof Transformer with IEC

Garden light

LED underwater lamp
LED Ground light
Outdoor power Supply

Humidifier

Swimming pool

Round Enapsulated Transformer with wire leads ,power range: 25VA-6000VA

Waterproof Encapsulated transformer Application:

1. Garden light
2. LED underwater lamp
3.LED Ground light
4.Outdoor power Supply
5.Audio sound field
6.Stage lighting

7.Outdoor lighting

8.Christmas Lights

Name:
Grewin 12v 24v Toroidal Transformer Ring type Transformer 100va 200va

1.We have abtained VDE,UL,CE,ROHS,ISO9000 Approal and SGS Audit Supplier in China,We guarantee quality is the first:

The dimension of the toroidal transformers:
The Partial List of GW-B Series Toroidal Transformers with Cable and Mounting Holes:
A.
1. Installation:
Horizontal (non-conventional-type base plate), sunk, side type, and bridge.

2.Application:
Especially low-hum and low-dispersing construction
Low-level of induction
High-grade design casing possible
Statically shield winding and magnetical shield winding optional .
Be used widely such as audio equipment,communication,new energy areas,Electrical control,Cable TV network etc.
3.Equipment:
Over 50 sets toroidal/annular/ ring coil winding machines, 3 EI type transformer lines, 2 sets of vacuum annealing furnaces, A set of nitrogen and hydrogen production equipment as below:
. Automatic Winding Machine . Semi-automatic Winding Machine
. Toroidal Winding Machine . Insert Lamination Machine
. Wave Soldering Machine . Plastic Termal Ultraviolet Machine
. Domino Ink Jet Printing Machine Transformer Multitester for High & Low Frequency
Layer Insulation Withstand Voltage Tester
4.Certificate
The certificate of our transformer has CE CQC RoHs UL
B.Dual 110V Power Transformer:
For the international market request, these types of the GREWIN Transformers are designed into dual primaries for 110V. No matter what about your local voltage is 110V or 220V, you should use them. Below are the methods for using:
1. If you are using 110VAC(such as Taiwan, US), Please parallel the two primaries 110V. Please pay attention to the terminals of 110V must be short circuit, and the terminals of 0V must be short circuit.

2.If you are using 220VAC(such as Hongkong, China Mainland, Europe), Please series the two primaries. Please pay attention to one terminals of 0V must be short circuit with another terminals of 110V.

CONTACT NAME CARD:
20VA 60 H25 82 10mA 1.20V 0.45kgs
30VA 65 H35 84 10mA 1.20 0.50kgs
50VA 70 H40 88 20mA 1.15 1.30kgs
100VA 85 H60 90 30mA 1.15 1.50kgs
120VA 90 H75 93 40mA 1.10 2.00kgs
200VA 110 H80 93 100mA 1.10 2.80kgs
300VA 120 H80 94 150mA 1.08 3.50kgs
500VA 130 H80 94 150mA 1.08 5.00kgs
800VA 140 H85 94 200mA 1.08 6.50kgs
1000VA 140 H85 95 300mA 1.05 8.50kgs
1500VA 160 H90 95 400mA 1.05 12.0kgs
2000VA 180 H90 95 400mA 1.05 15.0kgs
4000VA 220 H95 95 500mA 1.05 20.0kgs
6000VA 250 H95 95 500mA 1.05 25.0kgs

1).Features:
Has a strong anti-interference, distributed capacitance, impedance, attenuation of low transmission, firm
structure,can fine-tune the inductance, etc., are widely used in fax
machines, PBX.

2). Applicable frequency range: 20 to 100kHz :
Operating frequency: higher than 200kHz
High magnetic flux and low loss magnetic materials
With low leakage inductance and high efficiency .
3).Applications:

PCB circuits, computer, TV, monitor, scanner, duplicator, mobile adapters, printer and other equipments and
instruments.
UL insulation system for Class B (130), F (155), H (180)
4). Can make other customized Ferrite transformers:
Power range: core type using N67 grade material
500: ETD54, ETD59 and E65
5)Advantage:
1.UL, CUL, CE, ISO9001:2008
2.We offer custom-made transformers, OEM and ODM are welcome
3.We deliver the quality you expect at consistently competitive prices
4.Transformer quality lifetime:10 Years.
5.Specialty Sales service:5 -10 Years
6.Transformers Test: 100% test before the shipment