IEC 60129 and IEC 62271-102 are standards published by the International Electrotechnical Commission (IEC) for high voltage switchgear and control equipment, and M1-COMP may be related to specific requirements or test conditions in these standards. The details are as follows:

IEC 60129: Originally published in 1984, it is a standard for AC isolation switches and ground switches. However, this standard was superseded by the first edition of IEC 62271-102 in 2001, and its contents have been integrated into IEC 62271-102.

IEC 62271-102: This standard specifies the requirements for AC isolation switches and ground switches, applicable to indoor and outdoor installation of AC isolation switches and ground switches with rated voltages above 1000V and operating frequencies not exceeding 60Hz, and also applies to the operating devices of these isolation switches and ground switches and their auxiliary equipment. The second edition, released in 2018, was a technical revision of the first edition, which added the mechanical durability class M1 for the ground switch.

M1-comp: In the IEC 62271-102:2018 standard, M1 is a new grounding switch mechanical durability class. Ground switches with the M1 grade mark meet specific mechanical durability requirements and can withstand a certain number of operating cycles under specified conditions without failure or performance degradation to ensure reliable operation in high-voltage electrical systems. "COMP" may refer to a specific product or component that complies with this standard, indicating that it has been tested and meets the relevant requirements.