⎯
137
⎯
6 F 2 S 0 8 2 8
Operating time check for IDMT curve
The testing circuit is shown in Figure 6.5.1.5.
Single-phase
current
source
A
TB1
GRL150
Time
counter
TB2 -A9
-B9
DC
power
supply
+
−
Start
Stop
OV
- (
∗
)
- (
∗
)
E
Monitoring
jack
A
0V
(
∗
): Connect the terminal number corresponding to the testing element. Refer to Table 3.2.1.
Figure 6.5.1.5 Testing IDMT
One of the inverse time characteristics can be set, and the output signal numbers of the IDMT
elements are as follows:
Element Signal
No.
OC1-A
80
EF1
112
SEF1
116
Fix the time characteristic to test by setting the scheme switch MOC1, MEF1 or MSE1 on the
"OC", "EF" or "SEF" screen.
Example: "Settings" sub-menu
→
"Protection" screen
→
"Group
∗
" screen
→
"OC" screen
The test procedure is as follows:
•
Enter the signal number to observe the operating time at the monitoring jack A as shown in
Section 6.5.1.
•
Apply a test current and measure the operating time. The magnitude of the test current should
be between 1.2
×
Is to 20
×
Is, where Is is the current setting.
•
Calculate the theoretical operating time using the characteristic equations shown in Section
2.3.1. Check that the measured operating time is within IEC 60255-3 class 5.
Содержание GRL150-100 Series
Страница 149: ... 148 6 F 2 S 0 8 2 8 ...
Страница 150: ... 149 6 F 2 S 0 8 2 8 Appendix A Programmable Reset Characteristics and Implementation of Thermal Model to IEC60255 8 ...
Страница 154: ... 153 6 F 2 S 0 8 2 8 Appendix B Signal List ...
Страница 180: ... 179 6 F 2 S 0 8 2 8 Appendix C Binary Output Default Setting List ...
Страница 182: ... 181 6 F 2 S 0 8 2 8 Appendix D Details of Relay Menu ...
Страница 195: ... 194 6 F 2 S 0 8 2 8 ...
Страница 196: ... 195 6 F 2 S 0 8 2 8 Appendix E Case Outline ...
Страница 199: ... 198 6 F 2 S 0 8 2 8 ...
Страница 200: ... 199 6 F 2 S 0 8 2 8 Appendix F Typical External Connections ...
Страница 223: ... 222 6 F 2 S 0 8 2 8 ...
Страница 228: ... 227 6 F 2 S 0 8 2 8 Appendix I Return Repair Form ...
Страница 232: ... 231 6 F 2 S 0 8 2 8 Appendix J Technical Data ...
Страница 238: ... 237 6 F 2 S 0 8 2 8 Appendix K Symbols Used in Scheme Logic ...
Страница 241: ... 240 6 F 2 S 0 8 2 8 ...
Страница 242: ... 241 6 F 2 S 0 8 2 8 Appendix L Inverse Time Characteristics ...
Страница 248: ... 247 6 F 2 S 0 8 2 8 Appendix M IEC60870 5 103 Interoperability ...
Страница 260: ... 259 6 F 2 S 0 8 2 8 Appendix N Resistor Box Option ...
Страница 263: ... 262 6 F 2 S 0 8 2 8 ...
Страница 264: ... 263 6 F 2 S 0 8 2 8 Appendix O Ordering ...
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