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Installation_Guide_SIAB000B0010AA_Rev. 03 11 / 32
Timing accuracy: ± 5% or ±30 ms (whichever is greater) when the protection works with
inverse time and ± 40 ms or ± 0.5% (whichever is greater) when it works with definite time
Function
50/51N
Permission: yes/no
Operating range: 0.20 to 7 x Is (step 0.01 x Is)
Curves: IEC 60255-151 and IEEE
Operating time: IEC Inverse curve, IEC very inverse curve, IEC extremely inverse curve
IEC long time inverse, IEEE Inverse curve, IEEE very inverse curve, IEEE extremely
inverse curve.
Defined time: 0.02 to 300 s (step 0.01 s)
Dial: 0.05 to 1.25 (step 0.01)
Curve, activation level 110%
Curve, deactivation level 100%
Defined time, activation level 100%
Defined time, deactivation level 90%
Instantaneous deactivation
Timing accuracy: ± 5% or ±30 ms (whichever is greater) when the protection works with
inverse time and ± 40 ms or ± 0.5% (whichever is greater) when it works with definite time
Fault reports
4 fault reports, 24 events each
Trip output contact
For Striker: 24 Vdc
– 135 mJ
Frequency
50/60 Hz
Communication
USB port: Modbus RTU
Battery and power supply
Externally, with adapter (Kitcom) USB port + 230 Vac + Commisioning battery
Self-powering from current
Three phase self-power level: I > 0,4 x Is min
Environment
Operating temperature: -40 to 70ºC
Storage temperature: -40 to 80 ºC
Humidity: 95%
Transformers
Power supply and measurement specific CTs
Mechanical features
Metallic box
Panel Mounting
167.8 x 120.65 mm
Depth: 56.2 mm
IP-54 when panel mounted
Thermal resistance
10 x Ismin or 2.85xIsmax: Continuously
20 x Ismin or 5.7 x Ismax for 60 seconds
25 xIsmin or 7.14 x Ismax for 10 seconds.