Melitta LOOK - Page 25

25
Burdens for MVTU 13 definite time delayed neutral displacement voltage 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 30 41 71 76
Vin < V setting
Relay output
energised 68 69 75 78
Vin > V setting
Relay on
standby 30 41 71 76
Vin < V setting
Relay output
and LED 81 82 88 91
trip indicator
operated
LED trip
indicator 74 75 81 84
operated
only
Burdens for MVTU 18 definite time delayed neutral displacement voltage relay with
additional timer
Nominal voltage range (V) 30/34 48/54 110/125
DC voltage supplied for test (V) 30 48 110
Relay on
standby 41 38 36.5
Vin < V setting
Output relay
RL1 and t
1
237 133 80
led operated
t
1
LED only 40.5 37.5 36.0
operated
Output relays
RL1 and RL2
and t
1
and 240 140 87
t
2
LEDs
operated
t
1
and t
2
LEDs only 40 36.6 35.5
operated
Current
drain
(mA)
Current drain
for relays
fitted with
mechanical
flag (mA)
Current drain
for relays
fitted with
LED trip
indicator
(mA)