Melitta LOOK - Page 24

24
Burdens for MVTU 12 definite time delayed overvoltage relay
Nominal voltage range (V) 30/34 48/54 110/125 220/250
Series dropper resistor None 220 1k 2 x 4k7
Rext 1 (ohm) in parallel
DC voltage supplied for test (V) 30 48 110 220
Relay on
standby 28 38 70 76
Vin < V setting
Relay output
energised 67 69 71 76
Vin > V setting
Relay on
standby 28 38 70 76
Vin < V setting
Relay output
and LED 80 82 84 89
trip indicator
operated
LED trip
indicator 73 75 77 82
operated
only
Current drain
for relays
fitted with
mechanical
flag (mA)
Current drain
for relays
fitted with
LED trip
indicator
(mA)