Cross References:IEC 60050-121IEC 60050-151IEC 60050-221IEC 60401-3IEC 60404-2IEC 60404-3IEC 60404-4IEC 60404-6IEC 60404-7IEC 60404-8-1IEC 60404-8-3IEC 60404-8-4IEC 60404-8-5IEC 60404-8-6IEC 60404-8-7IEC 60404-8-8IEC 60404-8-9IEC 60404-8-10IEC 60404-10ISO 4948-1EN 60401-3EN 60404-2EN 60404-4EN 60404-6EN 60404-8-1EN 60404-8-6All current amendments available at time of purchase are included with the purchase of this document.