
259
6
F
2
S
0
8
5
0
default setting of the UVCV is 48 V.)
•
Choose a test current IT by referring to the table below, which shows the relation of setting
reach UVCZ, test current IT and measuring error.
UVCZ IT
Error
0.0- 2.0
Ω
(0 - 10
Ω
10A
5A) (*)
±
5%
2.1 – 10.0
Ω
(11 - 50
Ω
5A
1A)
±
5%
10.1 – 20.0
Ω
(51 - 100
Ω
2.5A
0.5A)
±
5%
20.1 – 50.0
Ω
(101 - 250
Ω
1A
0.2A)
±
7%
(*) Values shown in parentheses are in the case of 1A rating. Other values are in the case of 5A
rating.
•
Set the test voltage and test current phase relation as shown below. That is, Va, Vb, and Vc
are balanced, and IT lags Va by UVC characteristic angle UVC
θ
.
(The default setting of UVC
θ
is 85°.)
•
Adjust the magnitude of Va while retaining the conditions above and measure the voltage Va
at which the element operates.
•
The theoretical operating voltage is obtained by (IT
×
UVCZ + UVCV) when the setting
reach is UVCZ. Check that the measured voltage is within the above-mentioned error of the
theoretical voltage value. (The default setting of the UVCZ is 2.0 ohm for 5A rating and 10
ohm for 1A rating.)
Element UVCV UVCZ IT IT
×
UVCZ + UVCV
Measured voltage
UVCZ
6.5.1.5 Directional Earth Fault Element DEF
The testing circuit is shown in Figure 6.5.1.7.
DEF elements and their output signal number are listed below.
Measuring element
Signal number
DEFF 611
DEFR 612
The following shows the case when testing DEFF.
IT
θ
Vb
Vc
Va
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Содержание GRL100-701B
Страница 288: ... 287 6 F 2 S 0 8 5 0 Appendix A Block Diagram w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 290: ... 289 6 F 2 S 0 8 5 0 Appendix B Signal List w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 324: ... 323 6 F 2 S 0 8 5 0 Appendix C Variable Timer List w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
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Страница 348: ... 347 6 F 2 S 0 8 5 0 Appendix G Typical External Connection w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 351: ... 350 6 F 2 S 0 8 5 0 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 381: ... 380 6 F 2 S 0 8 5 0 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 388: ... 387 6 F 2 S 0 8 5 0 Appendix J Return Repair Form w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 394: ... 393 6 F 2 S 0 8 5 0 Appendix K Technical Data w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 410: ... 409 6 F 2 S 0 8 5 0 Appendix L Symbols Used in Scheme Logic w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 413: ... 412 6 F 2 S 0 8 5 0 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 414: ... 413 6 F 2 S 0 8 5 0 Appendix M Multi phase Autoreclose w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 417: ... 416 6 F 2 S 0 8 5 0 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 418: ... 417 6 F 2 S 0 8 5 0 Appendix N Data Transmission Format w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 424: ... 423 6 F 2 S 0 8 5 0 Appendix O Example of Setting w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 440: ... 439 6 F 2 S 0 8 5 0 Appendix Q IEC60870 5 103 Interoperability w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 453: ... 452 6 F 2 S 0 8 5 0 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 454: ... 453 6 F 2 S 0 8 5 0 Appendix R Inverse Time Characteristics w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 457: ... 456 6 F 2 S 0 8 5 0 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 464: ... 463 6 F 2 S 0 8 5 0 Appendix T PLC Setting Sample w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 468: ... 467 6 F 2 S 0 8 5 0 Appendix U Ordering w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 473: ...w w w E l e c t r i c a l P a r t M a n u a l s c o m ...