Melitta LOOK - MVTU 11 Undervoltage and MVTU 12 Overvoltage; MVTU 13 Neutral Displacement; MVTU 18 Neutral Displacement

11
2.2 MVTU 11 Undervoltage and MVTU 12 overvoltage
Relay ac Relay dc Resistor assembly Dropper resistor values fitted:
rating (V) rating (V) part number
50/60Hz dc series ac series
resistor (ohm) resistors (ohm)
Rext 1 Rext 2
57/70 30/34 None required — —
100/120
220/250 30/34 ZE0103 020 — 66k
380/440
57/70 48/54 FJ0340 007 220R —
100/120
220/250 48/54 ZE0103 021 220R 66k
380/440
57/70 110/125 FJ0340 001 1k0 —
100/120
220/250 110/125 ZE0103 022 1k0 66k
380/440
57/70 220/250 ZE0103 018 2 x 4k7
100/120 (in parallel) —
220/250 220/250 ZE0103 023 2 x 4k7
380/440 (in parallel) 66k
2.3 MVTU 13 Neutral displacement
Relay ac Relay dc Resistor assembly Dropper resistor fitted:
rating (V) rating (V) part number
50/60Hz dc series ac series
resistor (ohm) resistors (ohm)
Rext 1 Rext 2
57/120 30/34 None required — —
57/120 48/54 FJ0340 007 220R —
57/120 110/125 FJ0340 001 1k0 —
57/120 220/250 ZE0103 018 2 x 4k7
(in parallel) —
2.4 MVTU 18 Neutral displacement
The MVTU 18 does not require external dropper resistors.