ABB REF615 G - Technical Revision History

Characteristic Value
Start time
1)2)
Minimum Typical Maximum
DEFHPDEF
I
Fault
= 2 x set Start
value
42 ms 44 ms 46 ms
DEFLPDEF
I
Fault
= 2 x set Start
value
61 ms 64 ms 66 ms
Reset time < 40 ms
Reset ratio Typical 0.96
Retardation time < 30 ms
Operate time accuracy in definite time mode ±1.0% of the set value or ±20 ms
Operate time accuracy in inverse time mode
±5.0% of the theoretical value or ±20 ms
3)
Suppression of harmonics RMS: No suppression
DFT: -50 dB at f = n x f
n
, where n = 2, 3, 4, 5,…
Peak-to-Peak: No suppression
1)
Measurement mode = default (depends on stage), current before fault = 0.0 x I
n
, f
n
= 50 Hz, earth-
fault current with nominal frequency injected from random phase angle, results based on statistical
distribution of 1000 measurements
2) Includes the delay of the signal output contact
3) Maximum Start value = 2.5 x I
n
, Start value multiples in range of 1.5 to 20
4.2.2.14 Technical revision history
Table 307: DEFHPDEF Technical revision history
Technical revision
Change
B Maximum value changed to 180 deg for the Max
forward angle setting
C Added a setting parameter for the "Measured Io"
or "Calculated Io" selection and setting
parameter for the "Measured Uo", "Calculated
Uo" or "Neg. seq. volt." selection for polarization.
Operate delay time and Minimum operate time
changed from 60 ms to 40 ms. The sector
default setting values are changed from 88
degrees to 80 degrees.
D Step value changed from 0.05 to 0.01 for the
Time multiplier setting.
1YHT530004D05 D Section 4
Protection functions
615 series 303
Technical Manual