ABB REU 610 Technical Reference Manual page 47

1MRS755972
Voltage Relay
Technical Reference Manual - ANSI Version
Table 5.1.4.8.-2 Undervoltage protection, elements 27P-1, 27P-2 and
27D
Feature
Set pickup value 27P-1, 27P-2
and 27D:
-at definite-time characteristic 0.20...1.20 × U
-at IDMT characteristic
Pickup time, typical
Time/voltage characteristic:
-at definite operate time, 27P-1
TDLY and 27P-2 TDLY
-IDMT
time dial 27P-1 TD and 27P-2
TD
Resetting time, typical/
maximum
Retardation time, typical
Set resetting time, 27P-1
RESET
Drop-off/pick-up ratio, 27P-1
D/P
Operate time accuracy:
-at definite-time characteristic ±2% of the set
-at IDMT characteristic
Operation accuracy
a)
Resetting time of the trip signal.
Table 5.1.4.8.-3 Residual overvoltage protection, elements 59N-1 and
59N-2
Feature
Set pickup value 59N-1 and 59N-2:
-at definite-time characteristic
Pickup time, typical
Time/voltage characteristic:
-definite-time operate time, 59N-1
TDLY, 59N-2 TDLY
Resetting time, typical/maximum
Element 27P-1 Element 27P-2 Element 27D
0.20...1.20 × U
n
(VT) (VT)
0.20...1.20 × U 0.20...1.20 × U
n
(VT) (VT)
80 ms 50 ms
0.10...600 s 0.10...600 s
curve C curve C
0.10...2.00 0.10...2.00
a)
70/80 ms 70/80 ms
30 ms 30 ms
0.07...60.0 s -
1.01...1.05 1.01...1.05
±2% of the set
operate time or operate time or
±25 ms ±25 ms
±25 ms or the ±25 ms or the
accuracy accuracy
appearing when appearing when
the measured the measured
voltage varies voltage varies
±3% ±3%
±1.5% of the set ±1.5% of the set
pickup value pickup value
Element 59N-1
2.0...80% U (VT)
n
70 ms
0.10...600 s
a)
30/50 ms
REU 610
0.20...1.20 × U
n n
(VT)
0.20...1.20 × U
n n
(VT)
50 ms
0.10...600 s
curve C
0.10...2.00
70/80 ms
50 ms
-
1.04
±2% of the set
operate time or
±25 ms
±25 ms or the
accuracy
appearing when
the measured
voltage varies
±3%
±5% of the set
pickup value
Element 59N-2
2.0...80% U (VT)
n
60 ms
0.10...600 s
a)
30/50 ms
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