Transformer Monitor, Protection Relay according to EN 60255

Item number: 2500287_S092_DIW
The IKI-30 is a transformer-powered Protection Relay according to IEC 60255, suitable for... more
Product information "IKI-30E_1"
The IKI-30 is a transformer-powered Protection Relay according to IEC 60255, suitable for transformer ratings between 160..12500 kVA, 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.

Self powered protection relay acc. IEC 60255
Applicable for transformers with nominal power between 160 and 12 500 kVA; as overcurrent, short-circuit or earth-fault protection relay in combination with a circuit breaker and as overcurrent protection in combination with load breakers and high voltage fuses

Selectable tripping options
2 DT (ANSI 51)
Instantaneous overcurrent characteristic (ANSI 50)
External fast tripping without delay
Optional earth fault protection

Release of tripping coil
Low-power coil (no external supply needed)
Standard tripping coil (with seperate power storage PSU unit )

Self test
On site test of function by test button
Dry contact for remote transmission of watchdog alarm

Free of maintenance, CT-powered
Power supply buffered by lithium battery (life cycle -> 15 years)
Device data
Article number2500287_S092_DIW
Product designationIKI-30 Transformer Monitor | Protection Relay according to EN 60254
StandardIEC 60255-1
Dimensions and installation 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-25°C ... 55°C
Storage temperature-30°C ... 70°C
Protection classIP40
Rated frequency50 Hz, 60 Hz
Technical Data Fault Protection Functions
Reset2h, automatic after load current restoring, manual
Setting / nominal current setting range5 .. 260 A
Protection levelsANSI 50, ANSI 50N, ANSI 51
Intrinsic time43 ms
Threshold value I>>/In8 values settable: 2 .. 20
Delay time I>>8 values settable: 0 .. 2 s or deactivated
Threshold value UMZ I>8 values settable: 1.1 .. 3
Delay time UMZ16 values settable: 1 .. 300 s
Protection characteristics IDMTIEC extremely invers, IEC very invers
Start value I>/In8 values settable: 1,1 .. 3
Displacement factor v I>8 values settable: 0,05 .. 10 s
Threshold value Ie>>8 values settable: 0.1 .. 2
Delay time tIe>>8 values settable: 0 .. 5 s
Interfaces and communication
Remote signalling2 dry contacts, NC / NO, alarm / tripping
Power supply
Power supply24 - 230 V AC/DC +- 10%; Power input < 1 Watt
Battery typeLithium
Notes on transformer supplyFrom primary current of at least 1 A