Low-voltage surge protective devices - Part 12: Surge protective devices connected to low-voltage power distribution systems - Selection and application principles— 237 стр.
Railway applications. Insulation coordination. Basic requirements. Clearances and creepage distances for all electrical and electronic equipment— 54 стр.
Railway applications. Fixed installations. Electrical safety, earthing and the return circuit. Provisions against the effects of stray currents caused by d.c. traction systems— 34 стр.