BS EN IEC 60255-181:2019 Measuring relays and protection equipment Functional requirements for frequency protection

Electrical testing
Electric power system disturbances
Voltage fluctuations
Switchgear
Surge protection
Type testing
Electric power systems
Relays
Electrical protection equipment
Surges (electrical)
Switches

Link: BS EN IEC 60255-181:2019 Measuring relays and protection equipment Functional requirements for frequency protection
Source: BSI Standards

BS ISO 11992-1:2019 Road vehicles. Interchange of digital information on electrical connections between towing and towed vehicles Physical and data-link layers

Electrical equipment
Error detection
Electronic equipment and components
Data transfer
Digital signals
Communication networks
Motor vehicles
Diagnostic programs
Towed road vehicles
Information exchange
Road vehicles
Data transmission

Link: BS ISO 11992-1:2019 Road vehicles. Interchange of digital information on electrical connections between towing and towed vehicles Physical and data-link layers
Source: BSI Standards