ČSN - Czech national standards

Measuring relays and protection equipment - Part 121: Functional requirements for distance protection

Available languages: Czech

Available design: Print design

Measuring relays and protection equipment - Part 127: Functional requirements for over/under voltage protection

Available languages: Czech

Available design: Print design

Measuring relays and protection equipment - Part 149: Functional requirements for thermal electrical relays

Available languages: Czech

Available design: Print design

Measuring relays and protection equipment - Part 151: Functional requirements for over/under current protection

Available languages: Czech

Available design: Print design

Measuring relays and protection equipment - Part 181: Functional requirements for frequency protection

Available languages: Czech

Available design: Print design

Measuring relays and protection equipment - Part 187-1: Functional requirements for differential protection - Restrained and unrestrained differential protection of motors, generators and transformers

Available languages: Czech

Available design: Print design

Měřicí relé a ochranná zařízení - Část 187-1: Funkční požadavky na rozdílovou ochranu - Omezovaná a neomezovaná rozdílová ochrana motorů, generátorů a transformátorů.

Available languages: Czech

Available design: Print design

Electrical relays - Part 11: Interruptions to and alternating component (ripple) in d.c. auxiliary energizing quantity of measuring relays

Available design: Print design

Measuring relays and protection equipment - Part 11: Voltage dips, short interruptions, variations and ripple on auxiliary power supply port

Available design: Print design

Electrical relays - Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment - Section 1: Vibration tests (sinusoidal)

Available languages: Czech

Available design: Print design