Visual Signaling - Legrand Ime Rd4B Manuel D'utilisation

Differential relays
Visual signalling
LED Off LED On
On 20 30
LED Blinking
40 50 Trip Condition
Rest
Monitoring
Monitoring
Monitoring
Monitoring
Monitoring
Monitoring
Alarm
Alarm Storage
Reset Reset in absence of differential current (fault removal)
Alarm Ring current transformer – differential relay connection breakdown
Test
Test no trip
No supply voltage or device out of order
Differential current < 20% of loaded IDn value
Differential current 20% of loaded IDn value
Differential current 30% of loaded IDn value
Differential current 40% of loaded IDn value
Differential current 50% of loaded IDn value
Differential current >70% of loaded IDn value
Differential current >% of loaded IDn value
Switch tripping, no differential current
Pressing of test key
Simultaneously pressing of Test + Reset keys
Reset LED turning off or automatically after 30s
LE12569AA_E 10/20 - 01IM cod.RD4B21.B