Section 10
1MAC309294-MB F
General function block features
466
RER620
Technical Manual
(Equation 57)
t[s]
t[s] = Trip time in seconds
I
measured current
I>
set
Pickup value
k
set
Time multiplier
Table 421: Curve parameters for ANSI and IEC IDMT curves
Curve name
A
B
C
(1) ANSI Extremely Inverse
28.2
0.1217
2.0
(2) ANSI Very Inverse
19.61
0.491
2.0
(3) ANSI Normal Inverse
0.0086
0.0185
0.02
(4) ANSI Moderately Inverse
0.0515
0.1140
0.02
(6) Long Time Extremely Inverse
64.07
0.250
2.0
(7) Long Time Very Inverse
28.55
0.712
2.0
(8) Long Time Inverse
0.086
0.185
0.02
(9) IEC Normal Inverse
0.14
0.0
0.02
(10) IEC Very Inverse
13.5
0.0
1.0
(11) IEC Inverse
0.14
0.0
0.02
(12) IEC Extremely Inverse
80.0
0.0
2.0
(13) IEC Short Time Inverse
0.05
0.0
0.04
(14) IEC Long Time Inverse
120
0.0
1.0
The maximum guaranteed measured current is 50 x In for the current
protection. When the set
Pickup value
exceeds 1.00 x In, the turn point
where the theoretical IDMT characteristics are leveling out to the definite
time can be calculated with the formula:
(Equation 58)
t s
A
I
I
B k
c
[ ]
=
>
⎛
⎝⎜
⎞
⎠⎟
−
+
⎛
⎝
⎜
⎜
⎜
⎜⎜
⎞
⎠
⎟
⎟
⎟
⎟⎟
⋅
1
Turn point
Pickupvalue
=
50
×
In
Содержание RER620
Страница 1: ...Relion Protection and Control Advanced Recloser Protection and Control RER620 Technical Manual ...
Страница 2: ......
Страница 22: ...Section 1MAC309294 MB F 16 RER620 Technical Manual ...
Страница 88: ...Section 3 1MAC309294 MB F Basic functions 82 RER620 Technical Manual ...
Страница 278: ...Section 4 1MAC309294 MB F Protection functions 272 RER620 Technical Manual ...
Страница 362: ...Section 5 1MAC309294 MB F Control functions 356 RER620 Technical Manual ...
Страница 418: ...Section 7 1MAC309294 MB F Measurement functions 412 RER620 Technical Manual ...
Страница 428: ...Section 8 1MAC309294 MB F Recording functions 422 RER620 Technical Manual ...
Страница 464: ...Section 9 1MAC309294 MB F Other functions 458 RER620 Technical Manual ...
Страница 554: ...Section 10 1MAC309294 MB F General function block features 548 RER620 Technical Manual ...
Страница 568: ...Section 12 1MAC309294 MB F Relay physical connections 562 RER620 Technical Manual ...
Страница 574: ...Section 13 1MAC309294 MB F Technical data 568 RER620 Technical Manual ...
Страница 576: ...Section 14 1MAC309294 MB F Relay and functionality tests 570 RER620 Technical Manual ...
Страница 578: ...Section 15 1MAC309294 MB F Applicable standards and regulations 572 RER620 Technical Manual ...
Страница 582: ...Section 16 1MAC309294 MB F Glossary 576 RER620 Technical Manual ...
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