Monitored Data - ABB RELION REF615R Technical Manual

Section 4
Protection functions
Parameter Values (Range)
Curve parameter C 0.02...2.00
Curve parameter D 0.46...30.00
Curve parameter E 0.0...1.0
4.1.2.9
136
Unit Step

Monitored data

Table 93: 51LT Monitored data
Name Type
PICKUP_DUR FLOAT32
51LT Enum
Table 94: 51LT Technical data
Characteristic
Operation accuracy
1)2)
Pickup time
I = 2 x set Pickup value
Fault
Reset time
Reset ratio
Retardation time
Trip time accuracy in definite time mode
Trip time accuracy in inverse time mode
Suppression of harmonics
1) Measurement mode = default (depends on stage), current before fault = 0.0 x In, fn = 60 Hz, fault current in
one phase with nominal frequency injected from random phase angle, results based on statistical
2) Includes the delay of the signal output contact
3) Maximum Pickup value = 2.5 x In, Pickup value multiples in range of 1.5 to 20
Default Description
2.00 Parameter C for customer programmable
curve
29.10 Parameter D for customer programmable
curve
1.0 Parameter E for customer programmable
curve
Values (Range) Unit
0.00...100.00 %
1=Enabled
2=blocked
3=test
4=test/blocked
5=Disabled
Value
Depending on the frequency of the current
measured: f
±1.5% of the set value or ±0.002 x In
(at currents in the range of 0.1...5 x In)
Minimum
23 ms
< 50 ms
Typical 0.96
< 30 ms
±1.0% of the set value or ±20 ms
±5.0% of the theoretical value or ±20 ms
RMS: No suppression
DFT: -50 dB at f = n x fn, where n = 2, 3, 4, 5,
...
Peak-to-Peak: No suppression
P-to-P+backup: No suppression
1MRS240050-IB C
Description
Ratio of pickup time / trip time
Status
±2 Hz
n
Typical Maximum
25 ms 28 ms
3)
REF615R
Technical Manual