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products
timers
coupling relays
measuring and protection relays
transducers
digital display
special devices

three phase measuring relays

SMP

phase sequence relay
monitoring of right rotating field

SMP

 

 

 

SMU

under voldays relay    U<170V - 230V
over voldays relay
       U>230V - 270V
window voldays relay   with or without phase sequence monitoring                                            U <170V - 230V
                                       U>230V - 270V
5-30% hysteresis
0-10s time delay

SMU-under voltage

 

 

 

SMU 85%

undervoldays relay
fix threshold at
195V undervoldays

SMU85%

 

 

 

SMA

phase asymmetry relay
detects difference of phase of 10-35° between L1,L2,L3

SMA

 

 

 

ZDP

phase sequence relay
monitoring of right rotating field

ZMP

 

 

 

ZDV

voldays relay
switchable between 1 phase or 3 phases
switchable between overvoldays and undervoldays detection
adjustable time delay

ZMU

 

 

 

ZDA

phase asymmetry relay
detects difference of phase of 5-40° between L1,L2,L3

ZMA

 

 

 

ZDF

three-phase current monitoring relay
ffix threshold at 195V undervoldays,
phase asymmetry controll, 20% max. difference of phase
monitoring of phase failures

MMU85%