Transformer monitor, Protection Relay according to EN 60255, LCD and USB, 24V release

Item number: 2503290_H003
The IKI-35 is a compact overcurrent protection relay and is suitable as overload, short-circuit... more
Product information "IKI-35_24V"
The IKI-35 is a compact overcurrent protection relay and is suitable as overload, short-circuit and earth short-circuit protection in combination with circuit breakers or power isolators, as well as overload protection in combination with load disconnectors and HRC fuses. The IKI-35 can be parameterized via menu or software.Current transformer supplied protection relay
Application as transformer protection 
Availabe with wide range converters Overcurrent, short-circuit, and earth fault stage Intuitive operation thanks to menu navigation Inrush suppression Event memory Earth fault protection by balance current transformer or calculation from the phase current transformers possible 

Trigger characteristics 
DMT I> (ANSI 51)
IDMT I>, four characteristic curves (ANSI 51) 
2 short-circuit levels I>>, I>>> (ANSI 50) 
External quick-trigger 
Earth fault level DMT or IDMT Ie> (ANSI 51N or 51G) 
Instant earth fault level Ie>> (ANSI 50N or 50G) 

Magnetic trigger selectable
Low-energy triger,0.02 Ws, without external power supply 
Low-energy trigger,24 V/0.1 Ws, without external power supply Standard trigger coil (with additional external capacitor storage PSU) 

Self-test function

Event memory for 20 events
Availabe for download with mini USB cable via software (PC) 

due to transformer power supply Internal battery life > 15 years without transformer current
Device data
Article number2503290_H003
Product designationIKI-35 Transformer Monitor | Protection Relay according to EN 60255 | LCD and USB | 24V release
StandardIEC 60255-1
Dimensions and mounting instructions
Case height x width x depth48 x 96 x 80 mm
Cutout height x width45 x 92 mm
Norm cutout dimensionsDIN 43700
Installation typePanel mounting
Operating conditions
Operating temperature-40°C ... 70°C
Storage temperature-40°C ... 80°C
Protection classIP40, IP54
Rated frequency50 Hz, 60 Hz
Technical Data Fault Indicator IKI-23
Resetsettable 2 h / 4 h / 8 h, autom. after load current restoring, manual
Setting / nominal current setting range10 .. 250 A, 100 .. 400 A
Protection levelsANSI 50, ANSI 50N, ANSI 51, ANSI 51N
Intrinsic time43 ms
Threshold value I>>/In8 values settable: 0 .. 5 s
Delay time I>>Settable 0 .. 2 s
Threshold value UMZ I>settable 1.1 .. 3
Delay time UMZSettable 0,3 .. 300 s
Protection characteristics IDMTIEC extremely invers, IEC long time invers, IEC normal invers, IEC very invers
Start value I>/Insettable 1,1 .. 3
Displacement factor v I>Settable 0,05 .. 10 s
Threshold value Ie>>settable 0,1 .. 2 or deactivated
Delay time tIe>>Settable 0 .. 2 s
Threshold value UMZ Ie>settable 0,1 .. 2
Delay time UMZ Ie>Settable 0 .. 5 s
Start value Ie>/Insettable 0,1 .. 2
Displacement factor v Ie>Settable 0,05 .. 10 s
Interfaces and communication
Remote signalling2x, settable NO / NC, settable logic: I> + Ie>; I>; Ie>; Trip
Power supply
Power supply24 - 230 V AC/DC +- 10%; Power input < 1 Watt
Battery typeLithium battery