PD IEC TS 62271-304:2019 High-voltage switchgear and controlgear Classification of indoor enclosed switchgear and controlgear for rated voltages above 1 kV up to and including 52 kV related to the use in special service conditions with respect to condensation and pollution

Pollution
Indoor electric equipment
Switchgear
Rated voltage
Electrical equipment
Electric control equipment
Protected electrical equipment
Classification systems
Condensation
Testing conditions
Environment (working)
Insulating enclosures
High-voltage equipment

Link: PD IEC TS 62271-304:2019 High-voltage switchgear and controlgear Classification of indoor enclosed switchgear and controlgear for rated voltages above 1 kV up to and including 52 kV related to the use in special service conditions with respect to condensation and pollution
Source: BSI Standards

BS EN IEC 62271-109:2019 High-voltage switchgear and controlgear Alternating-current series capacitor by-pass switches

Type testing
Alternating current
Electrical testing
Electric current control
Rated current
Outdoor electric equipment
Electric power distribution
Capacitors
Circuit-breakers
Short-circuit currents
Switchgear
Electric control equipment
Switches
Electrical equipment
Ratings
Electrical protection equipment
Switch-fuses
High-voltage equipment

Link: BS EN IEC 62271-109:2019 High-voltage switchgear and controlgear Alternating-current series capacitor by-pass switches
Source: BSI Standards

BS EN ISO 6721-2:2019 Plastics. Determination of dynamic mechanical properties Torsion-pendulum method

Torsion testing
Plastics and rubber technology
Test equipment
Testing conditions
Torsion pendulums
Specimen preparation
Mechanical testing
Polymers
Error correction
Precision
Mechanical properties of materials
Modulus of elasticity
Plastics
Mathematical calculations
Test specimens
Dynamic testing

Link: BS EN ISO 6721-2:2019 Plastics. Determination of dynamic mechanical properties Torsion-pendulum method
Source: BSI Standards