Hammond 182S15 300VA 30V CT Toroidal Chassis Mount Transformer

The 182S15 is a 300 VA low-voltage toroidal power transformer for chassis mounting, from the 182 Series. Its dual secondary delivers 30V C.T. @ 10A when the windings are connected in series, or 15V @ 20A when they are connected in parallel, making it a fit for OEM engineers and equipment builders who need a 30V centre-tapped or 15V supply from a single core.

The primary is a dual 117/234 VAC winding for 50/60 Hz operation: wire the two primary halves in parallel for 117 VAC or in series for 234 VAC. The manufacturer's short description for this part reads "TOROID, 300VA, 50HZ, 15/15V". The toroidal design is described as low profile, lightweight and cool running thanks to its high efficiency, and the units are designed to have all windings engaged. Flexible leads are a minimum of 8" long, and every unit is Hi-Pot tested at 4,000V RMS between primary and secondary.

Physically, the 182S15 measures 5.06 in (129 mm) in outside diameter and 2.27 in (58 mm) high, with a table weight of 5.58 lbs and a listed shipping weight of 5.6 lbs (2.54 kg). It uses center single-hole mounting through a potted center for extra mounting strength, and ships with one bottom rubber insulating pad and mounting hardware: a 1/4-20 center bolt 2.50 in (64 mm) long (bottom rubber washer only, no top steel washer).

The series is CSA certified to C22.2 #66 (CSA file #209651), UL recognized to UL506 (UL file #E207860) and CE certified to IEC950, and this part is listed as RoHS and REACH compliant. Because toroidal transformers can draw a high magnetizing inrush current when first energized, the manufacturer advises a slow-blow fuse, time-delayed circuit breaker or other soft-start circuitry on the supply line.

Note: the 182 Series will soon be discontinued as a stocked series and is available while quantities last; it has been replaced with the 1182 Series.