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