Grewin Electrical Supply Toroidal Transformer Suppliers and Manufacturers

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

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

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Toroidal Transformers, by meeting today's requirements for smaller, more efficient, quieter and safer products, are being accepted in an increasing range of electronic and electrical equipment With toroidal transformer smaller dimensions, lighter weight and low stray magnetic fields , you can build more compact, lower cost quality products without sacrificing performance. Toroidal has a round shape with no air gaps, and with the primary and secondary windings uniformly distributed around the core, locks in\" the magnetic field and makes the toroidal transformer very quiet and efficient. Toroidal transformers are built around a ring-shaped core, which, depending on operating frequency, is made from a long strip of silicon steel or permalloy wound into a coil, powdered iron, or ferrite core. We make wide range of Toroids based on customer specifications. We provide center potted, plate mounted, clamp mounted and many other types of Toroids on customer specifications. Features High precision winding with Jovil and Ruff machines. High quality M4 27 CRGO core used Class H+ 200 Deg C Dual coat Enameled copper wires used UL approved Center potting provided for better cooling and fixing Tailor made according to customer specs TYCO, PANDUIT and MOLEX connectors and crimps used for UL approved models Custom made parts are designed and developed to meet specific requirements. Standards We follow Indian and UL standards. We can provide UL 5085-1 and 5085-2 We can make our product compatible with all international standards Applications Used medical and audio equipment Used in voltage stabilizers Used in electronics circuits Used in power supply units Used in variacs Used in high precision equipment

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Core: wound by high quality cold grain silicon, annealed by advanced vacuum annealing furnaces to improve electronic data, any dimension from customer are available Wire: copper and aluminum are available weld aluminum enamel wire well to save your cost 15 to 35%, based on our know-how technology Thermal protector: cutoff and switch are both available Applications: Electronic meter and apparatus Cable tv and digital network Electronic control Medical equipment New electric power supply Decorative illumination system Monitoring and control equipment Installation: horizontal (non-conventional-type base plate), sunk, side type and bridge Label info: certificate logo, basic electronic data, manufacturer's information also can be printed according to customer's request bar code is available based on customer's request Capacity: 5va to 5kva Phase: single Input voltage: ac power with voltages of various countries Output voltage: ac or customized Frequency: 50 to 60hz Power factor: 0.9 to 0.98 Efficiency: 75 to 98% Voltage regulation: 12 to 3% Output no-load loss: 0.5 to 10.0w Temperature-rise: ¡¨¹85¡ãc Insulation class: b: 130¡ãc e: 120¡ãc Testing items: no-load test (no-load current, voltage and loss) load test (load voltage, temperature-rise) inductive voltage test dc resistance test safety test

With high efficiency, low inrush current and low noise characteristics which are popular in the market. We also make reactor inductor for inverter of solar power with low loss and low noise. Power range 1000va to 30kva Phase single/three phase Input/output customized Insulation class ul class b, f, h, n (optional Isolation 4kv hi-pot

With high efficiency low inrush current and low temperature rise characteristics which are popular in the market. The transformer efficiency is up to 98%. Power range:1000va to 30kva Phase: single/three phase Input/output:customized Insulation class:ul class B, F, H, N Isolation:4KV