ABB RER620, Technical Manual

Page: 184 / 584

Section 4
1MAC309294-MB F
Protection functions
178 RER620
Technical Manual
Table 186: 46 Non group settings
4.1.6.8 Monitored data
Table 187: 46 Monitored data
4.1.6.9 Technical data
Table 188: 46 Technical data
Parameter Values (Range) Unit Step Default Description
Operation 1=Enable
5=Disable
5=Disable Operation Disable / Enable
Minimum trip time 20...60000 ms 1 20 Minimum trip time for IDMT curves
Reset delay time 0...60000 ms 1 20 Reset delay time
Curve parameter A 0.0086...120.0000 28.2000 Parameter A for customer programmable curve
Curve parameter B 0.0000...0.7120 0.1217 Parameter B for customer programmable curve
Curve parameter C 0.02...2.00 2.00 Parameter C for customer programmable curve
Curve parameter D 0.46...30.00 29.10 Parameter D for customer programmable curve
Curve parameter E 0.0...1.0 1.0 Parameter E for customer programmable curve
Name Type Values (Range) Unit Description
PICKUP_DUR FLOAT32 0.00...100.00 % Ratio of pickup time / trip
time
46 Enum 1=enabled
2=blocked
3=test
4=test/blocked
5=disabled
Status
Operation accuracy Depending on the frequency of the current
measured: f
n
±2Hz
±1.5% of the set value or ±0.002 x I
n
Pickup time
1 ,2
1. Negative sequence current before fault = 0.0, f
n
= 60 Hz, results based on statistical distribution of 1000
measurements
2. Includes the delay of the signal output contact
Minimum Typical Maximum
I
Fault
= 2 x set Pickup value
I
Fault
= 10 x set Pickup value
22 ms
14 ms
24 ms
16 ms
25 ms
17 ms
Reset time < 40 ms
Reset ratio Typical 0.96
Retardation time < 35 ms
Trip time accuracy in definite time mode ±1.0% of the set value or ±20 ms
Trip time accuracy in inverse time mode
±5.0% of the theoretical value or ±20 ms
3
3. Maximum Pickup value = 2.5 x I
n
, Pickup value multiples in range of 1.5 to 20
Suppression of harmonics DFT: -50dB at f = n x f
n
, where n = 2, 3, 4, 5,…