021 RELAY ASSEMBLY FOR REMOTE VOLTAGE INDICATION

FEATURES & BENEFITS

• Personnel safety assured by optical link between voltage detector and remote relay.
• Voltage detector itself is insulated even in case of capacitive divider breakdown and able to absorb fault energy.
• Remote indication of voltage presence/absence allow to avoid complicated and critical mechanical interlock.
• Largely used in earth switch and remote disconnector or for swapping energy feeders.
• Available both for MV or HV application.
• Typical application for automatic change of energy power for hospital or critical plants.
• Assure a fast and reliable indication locally and remote avoiding use of expensive voltage transformer