GOST IEC 60998-2-4-2011 Connecting devices for low-voltage circuis for household and similar purposes. Particular requirements for twist-on connecting devices
2013GOST IEC 60998-2-4-2013 Connecting devises for low-voltage circuit for household and similar purposes. Part 2-4. Particular requirements for twist-on connecting devices
2011GOST IEC 60998-2-4-2011 Connecting devices for low-voltage circuis for household and similar purposes. Particular requirements for twist-on connecting devices