ECM Toroidal Transformers
ECM Electronics Limited, Penmaen House, Ashington, West Sussex, RH20 3JR, UK
Tel: +44(0) 1903 892810: Fax: +44(0) 1903 892738. Email: ecm@ecmelectronics.co.uk
Although we have attempted to accurately reflect the products we market. ECM reserve the right without prior notice to
discontinue any product or make design changes we believe necessary.
Issue 1
SRT Series
TYPICAL CONSTRUCTION DIMENSIONS
Type
Capacity
(VA)
Eff.
%
H max.
(mm)
D
max.
(mm)
Type
Capacity
(VA)
Eff.
%
H
max.
(mm)
D max.
(mm)
SRT30 30 78 31 78 SRT500 500 95 78 143
SRT40 40 81 35 82 SRT600 600 96 82 149
SRT50 50 84 36 84 SRT700 700 96 85 151
SRT80 80 86 40 86 SRT800 800 97 87 156
SRT100 100 88 45 95 SRT900 900 98 89 158
SRT200 200 90 58 112 SRT1000 1000 98 92 159
SRT300 300 93 66 125 SRT1200 1200 98 96 163
SRT400 400 94 72 136 SRT1500 1500 98 102 168
Unique True Torus Core Design
CSA, and UL Approvals
Customised Designs
Very Low Flux Leakage
High Efficiency
The SRT series is our latest development in toroidal transformers. They differ in design from traditional
toroidal transformers as the advanced core construction produces characteristics similar to that of R-
cored transformers. The improved rounded section of the core leads to a substantial reduction in flux
leakage, therefore vigorously improving the units performance.
