This standard specifies requirements for gas-insulated, metal-enclosed switchgear in which the insulation is obtained, at least partly , by an insulting gas other than air at atmospheric pressure, for alternating current of rated voltage above 52 kV, for indoor and outdoor installation, and for services frequencies up to and including 60 Hz.

• Year of Declaration: 2003
• Reference: IEC 62271-203
• Number of Pages: 137
• Code: GYS IEC 62271-203
• Version: First edition 2003
• ICS Number: 29.130.10