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139
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6 F 2 S 0 8 2 8
Element Signal
No.
BCD 142
•
Enter the signal number to observe the operation at the monitoring jack A as shown in
Section 6.5.1.
•
Apply the three-phase balance current at 10% of the rated current and interrupt a phase
current.
Then, check the BCD element operates.
6.5.1.6 Cold load protection
The testing circuit is same as the circuit shown in Figure 6.5.1.
To check the cold load protection function, the scheme switch [CLPTST] in the "Switch" screen
on the "Test" menu is used. Test the item of OC1 shown in Section 6.5.1.1.
•
Set the scheme switch [CLPTST] to "S0".
Check that the OC1 operates at the setting value of normal setting group.
•
Next, set the scheme switch [CLPTST] to "S3".
Check that the OC1 operates at the setting value of cold load setting group [CLSG].
6.5.1.8 Current Change Detection Element OCD
The test circuit is shown in Figure 6.5.1.6.
Single-phase
current
source
A
TB1
DC
voltmeter
TB2
-1
-2
-A9
-B9
E
GRL150
DC
power
supply
+
−
Monitoring
jack
A
0V
Figure 6.5.1.6 Testing Current Change Detection Element
The output signal number of the OCD is as follows:
Measuring element
Signal number
OCD-A 68
Operation must be verified by abruptly changing the test current from 0 A to 1.2
×
Setting value or
vice versa.
OCD has a fixed setting of 0.4 A and 0.08 A for 5 A rating and 1 A rating respectively.
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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