Hammond 1182L90 225 VA Toroid Power Transformer, 90V/180V C.T.

The 1182L90 is a 225 VA toroidal power transformer in the 1182 Series, combining a dual 117/234 VAC, 50/60 Hz primary with two identical secondary windings. It suits OEM designers, equipment builders and repair technicians who need a 90V or 180V C.T. centre-tapped supply from either 117 VAC or 234 VAC mains.

Each secondary winding of the 1182L90 is rated 90V @ 1.25A. Connected in parallel, the secondaries deliver 90V @ 2.5A; connected in series they deliver 180V C.T. @ 1.25A, providing a centre tap. Units are designed to have all windings engaged, either series or parallel connected, or connected as an autotransformer, and a connection sheet is included.

The toroidal core shape gives a low profile, light weight, cool running and high efficiency, with low stray magnetic flux leakage for low EMI. This unit has an open toroid centre, is manufactured using Class B (130 °C) materials and weighs 4.85 lb +/- 4% according to its drawing, with a listed shipping weight of 5.3 lbs (2.40 kg). The drawing shows overall dimensions of 4.50 in and 2.00 in, each ±0.125 in.

For installation, the 1182L90 ships with two 0.062 in thick x 3.75 in OD rubber washers, one 16 ga x 3.56 in OD steel mounting washer and one 1/4-20 bolt, 2.50 in long, with lock washer and 1/4-20 hex nut. Primary leads are #20 TEW and secondary leads are #20 TEW, all brought out 8 to 9 in and stripped 0.5 in minimum. Because toroids can draw high magnetizing current when first energized, the manufacturer recommends a slow-blow fuse, time-delayed circuit breaker or other soft-start circuitry on the supply line.

The 1182 Series is UL recognized to UL 5085-1 and UL 5085-2 (file E207860), CSA certified to C22.2 #66.1-6 and #66.2-6 (file 209651), and hi-pot tested at 4,000 VAC RMS between primary and secondary. This part is RoHS and REACH compliant and is made in Canada.