Substation Automation

1.5CB Breaker Failure Protection IED(STP-K120)

1.5CB Breaker Failure Protection IED(STP-K120)

View all IEDs

Main functions

  • 2-staged overcurrent detection for each phase
  • Receive the phase-segregated or three-phase trip signals from external protection IEDs through digital input channels
  • Operating timer setting
  • Self-monitoring on a regular basis

General Specification

Division Item Specification Note
Terms of use Ambient temperature -25℃ ~ +55℃
Relative humidity 10% ~ 90%
Elevation 1,500m less than
Rated Frequency 60Hz
Electric current 5A
Power DC 125V (90~140V)
Auxiliary power source Single phase 220V
Outward form Size 280 x 255 x 247mm (W x H x D)
Form Stand-Alone Type
Weight 8.0kg less than
Quality of the material Aluminum

Hardware Specification

Division Specification Note
Communication port Ethernet 100Base-FX, 2 channels
connector : ST type, Multi-mode, 1310nm		 IEC 61850
100Base-T, 1 channels , Twisted-pair TCP/IP
Console(front) Serial 9pin (Male-Type) 1 port Operational Software
Time sync. IRIG-B120 or SNTP
Console(back) Serial 9pin (Male-Type) 1 port Reserve
Enter Contact 24 points
Contact output 28 points
CT 3 channels
Display TFT Color Graphic LCD 7" (800 x 400)
Button 18
LED 26

Apparent Dimension