1、Purpose
The control transformer of this series (hereinafter referred to as transformer) is applied to frequency of AC 50~60 Hz and circuit of 500V; it is often used as machine-tool control apparatus or power transformer for local lighting, and also can be used as small power transformer using for various electric equipment.
2、Service conditions
l A height above sea-level not exceeding 1000m;
l A temperature of ambient air not below -25℃ and not above +45℃；
l Relative air humidity: ordinary type ≤85℃, damp and hot type ≤95℃;
l In medium without risk of explosion and with too insufficient air and electric insulation dust to corrode metal and damage insulation;
l In environment without water vapor and equipped with rainproof device.
3、Structure
The single-phase multi-winding shell-type transformers is used as BK series control transformer, the main structure is shown as follows: Picture
l Shell-type is used as iron core, which is laminated;
l winding can be two-winding or multi-winding.