417
6
F
2
S
0
8
3
4
< V rating/(2.5 times of I rating)
= (110V/ 3 )/(2.5
×
5A)
= 5.08
Element Setting
BFRS
5.00
Ω
BFLS
θ
120
°
BRRS
5.00
Ω
BRLS
Linked with BFRS
BFRG
5.00
Ω
BFLG
θ
120
°
BRRG
5.00
Ω
BRLG
Linked with BRRG
3.6
Zero sequence compensation
In the GRZ100, vector type zero sequence compensation is applied to Zone 1 and Zone 2, and
the compensation factor is given in the resistive and reactive components independently.
Step 1
Calculate the positive, zero sequence impedance and mutual impedance:
Z1 = [R1: 0.0197] + j[X1: 0.2747] (ohms)
Z0 = [R0: 0.497] + j[X0: 1.4287] (ohms)
Zm = [Rm: 0.0212] + j[Xm: 0.3729] (ohms)
Step 2
Calculate the zero and mutual sequence compensation factor setting according to the following
equations:
KRS = R0/R1
×
100 = 0.497/0.0197 = 2523*
KXS = X0/X1
×
100 = 1.4387/0.2747 = 524
KRm = Rm/R1
×
100 = 0.0212/0.0197 = 108
KXm = Xm/X1
×
100 = 0.3729/0.2747 = 136
*Note:
If the calculated value exceeds 1000, then a setting of 1000 should be applied, this being
considered to be the maximum practical value.
Element Setting
KRS
1000
KXS
524
KRm
108
KXm
136
3.7 Current
setting
a. Definite time earth fault protection (EF)
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Содержание GRZ100-211B
Страница 284: ... 283 6 F 2 S 0 8 3 4 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 288: ... 287 6 F 2 S 0 8 3 4 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 323: ... 322 6 F 2 S 0 8 3 4 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 3 4 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 352: ... 351 6 F 2 S 0 8 3 4 Appendix G External Connections 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 383: ... 382 6 F 2 S 0 8 3 4 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 390: ... 389 6 F 2 S 0 8 3 4 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 ...
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Страница 396: ... 395 6 F 2 S 0 8 3 4 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 408: ... 407 6 F 2 S 0 8 3 4 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 ...
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Страница 412: ... 411 6 F 2 S 0 8 3 4 Appendix M Example of Setting Calculation 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 423: ... 422 6 F 2 S 0 8 3 4 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 3 4 Appendix P 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 ...
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Страница 448: ... 447 6 F 2 S 0 8 3 4 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 ...
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Страница 460: ... 459 6 F 2 S 0 8 3 4 Appendix T 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 ...
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