BS ISO 26602:2017 Fine ceramics (advanced ceramics, advanced technical ceramics). Silicon nitride materials for rolling bearing balls and rollers

Bearings
Rolling bearings
Specimen preparation
Physical properties of materials
Silicon inorganic compounds
Classification systems
Special ceramics
Nitrides
Ceramics
Ball bearings
Mechanical properties of materials
Balls (bearing components)

Link: BS ISO 26602:2017 Fine ceramics (advanced ceramics, advanced technical ceramics). Silicon nitride materials for rolling bearing balls and rollers
Source: BSI Standards

BS EN 50463-4:2017 Railway applications. Energy measurement on board trains Communication

Harmonics
Direct current
Meters
Railway electric traction equipment
Power measurement (electric)
Railway vehicles
Electrical equipment
Alternating current
Electrical measurement
Performance testing
Railway equipment
Electricity supply meters
Energy consumption
Railway coaches
Accuracy

Link: BS EN 50463-4:2017 Railway applications. Energy measurement on board trains Communication
Source: BSI Standards