ABB RELION REX640 - 4.1.8.9 LOFLPTUC Monitored data; 4.1.8.10 Technical data; 4.1.9 Loss of phase, undercurrent PHPTUC (ANSI 37)

4.1.8.8 LOFLPTUC Settings
Table 462: LOFLPTUC Group settings (Basic)
Parameter Values (Range) Unit Step Default Description
Start value low 0.01...0.50 xIn 0.01 0.10 Current set-
ting/Start value
low
Start value high 0.01...1.00 xIn 0.01 0.50 Current set-
ting/Start value
high
Operate delay time 400...600000 ms 10 2000 Operate delay time
Table 463: LOFLPTUC Non group settings (Basic)
Parameter Values (Range) Unit Step Default Description
Operation
1=on
5=off
1=on Operation Off / On
Table 464: LOFLPTUC Non group settings (Advanced)
Parameter Values (Range) Unit Step Default Description
Reset delay time 0...60000 ms 1 20 Reset delay time
4.1.8.9 LOFLPTUC Monitored data
Table 465: LOFLPTUC Monitored data
Name
Type Values (Range) Unit Description
START_DUR FLOAT32 0.00...100.00 % Ratio of start time / op-
erate time
LOFLPTUC Enum
1=on
2=blocked
3=test
4=test/blocked
5=off
Status
4.1.8.10 Technical data
Table 466: LOFLPTUC Technical data
Characteristic Value
Operation accuracy Depending on the frequency of the measured
current: f
n
±2 Hz
±1.5% of the set value or ±0.002 × I
n
Start time Typically 300 ms
Reset time Typically 40 ms
Reset ratio Typically 1.04
Retardation time <35 ms
Operate time accuracy in definite time mode ±1.0% of the set value or ±20 ms
1MRS759142 F Protection functions
REX640
Technical Manual
405