
⎯
77
⎯
6 F 2 S 0 8 4 6
Setting
The table shows the setting elements necessary for the overvoltage protection and their setting
ranges.
Element Range
Step Default Remarks
OVS1
5.0 – 150.0 V
0.1 V
120.0 V
OVS1 threshold setting.
TOS1I
0.05 – 100.00
0.01
10.00
OVS1 time multiplier setting. Required if [OVS1EN] = IDMT.
TOS1
0.00 – 300.00 s
0.01 s
0.10 s
OVS1 definite time setting. Required if [OVS1EN] = DT.
TOS1R
0.0 – 300.0 s
0.1 s
0.0 s
OVS1 definite time delayed reset.
OS1DP
10 – 98 %
1 %
95 %
OVS1 DO/PU ratio setting.
OVS2
5.0 – 150.0 V
0.1 V
140.0 V
OVS2 threshold setting.
TOS2
0.00 – 300.00 s
0.01 s
0.10 s
OVS2 definite time setting.
OS2DP
10 - 98 %
1 %
95 %
OVS2 DO/PU ratio setting.
OVG1
5.0 – 150.0 V
0.1V
70.0 V
OVG1 threshold setting.
TOG1I
0.05 – 100.00
0.01
10.00
OVG1 time multiplier setting. Required if [OVG1EN]=IDMT.
TOG1
0.00 – 300.00 s
0.01 s
0.10 s
OVG1 definite time setting. Required if [ZOV1EN]=DT.
TOG1R
0.0 – 300.0 s
0.1 s
0.0 s
OVG1 definite time delayed reset.
OG1DP
10 – 98 %
1 %
95 %
OVG1 DO/PU ratio
OVG2
5.0 – 150.0 V
0.1V
80.0 V
OVG2 threshold setting
TOG2
0.00 – 300.00 s
0.01 s
0.10 s
OVG2 definite time setting
OG2DP
10 – 98 %
1 %
95 %
OVG2 DO/PU ratio
[OVS1EN] Off / DT / IDMT
Off
OVS1 Enable
[OVS2EN] Off / On
Off
OVS2 Enable
[OVG1EN] Off / DT / IDMT
Off
OVG1 Enable
[OVG2EN] Off / On
Off
OVG2 Enable
2.4.9.2 Undervoltage Protection
GRZ100 provides four independent undervoltage elements for phase and earth fault protection.
UVS1 and UVS2 are used for phase fault protection, and UVG1 and UVG2 for earth fault
protection. UVS1 and UVG1 are programmable for inverse time (IDMT) or definite time (DT)
operation. UVS2 and UVG2 have definite time characteristic only.
The UVS1 and UVG1 undervoltage protection elements have an IDMT characteristic defined by
equation (2):
( )
⎥
⎥
⎥
⎦
⎤
⎢
⎢
⎢
⎣
⎡
−
×
=
Vs
V
TMS
t
1
1
(2)
where:
t = operating time for constant voltage V (seconds),
V = energising voltage (V),
Vs = undervoltage setting (V),
TMS = time multiplier setting.
The IDMT characteristic is illustrated in Figure 2.4.9.6.
The UVS2 and UVG2 elements are used for definite time undervoltage protection.
Содержание GRZ100 B Series
Страница 264: ... 263 6 F 2 S 0 8 4 6 Appendix A Block Diagram ...
Страница 271: ... 270 6 F 2 S 0 8 4 6 ...
Страница 272: ... 271 6 F 2 S 0 8 4 6 Appendix B Signal List ...
Страница 307: ... 306 6 F 2 S 0 8 4 6 ...
Страница 308: ... 307 6 F 2 S 0 8 4 6 Appendix C Variable Timer List ...
Страница 310: ... 309 6 F 2 S 0 8 4 6 Appendix D Binary Input Output Default Setting List ...
Страница 321: ... 320 6 F 2 S 0 8 4 6 ...
Страница 322: ... 321 6 F 2 S 0 8 4 6 Appendix E Details of Relay Menu and LCD Button Operation ...
Страница 331: ... 330 6 F 2 S 0 8 4 6 ...
Страница 340: ... 339 6 F 2 S 0 8 4 6 Appendix G Typical External Connections ...
Страница 377: ... 376 6 F 2 S 0 8 4 6 ...
Страница 384: ... 383 6 F 2 S 0 8 4 6 Appendix J Return Repair Form ...
Страница 388: ... 387 6 F 2 S 0 8 4 6 Customer Name Company Name Address Telephone No Facsimile No Signature ...
Страница 389: ... 388 6 F 2 S 0 8 4 6 ...
Страница 390: ... 389 6 F 2 S 0 8 4 6 Appendix K Technical Data ...
Страница 401: ... 400 6 F 2 S 0 8 4 6 ...
Страница 402: ... 401 6 F 2 S 0 8 4 6 Appendix L Symbols Used in Scheme Logic ...
Страница 405: ... 404 6 F 2 S 0 8 4 6 ...
Страница 406: ... 405 6 F 2 S 0 8 4 6 Appendix M Example of Setting Calculation ...
Страница 417: ... 416 6 F 2 S 0 8 4 6 ...
Страница 418: ... 417 6 F 2 S 0 8 4 6 Appendix N IEC60870 5 103 Interoperability and Troubleshooting ...
Страница 430: ... 429 6 F 2 S 0 8 4 6 Appendix O Programmable Reset Characteristics and Implementation of Thermal Model to IEC60255 8 ...
Страница 434: ... 433 6 F 2 S 0 8 4 6 Appendix P Inverse Time Characteristics ...
Страница 437: ... 436 6 F 2 S 0 8 4 6 ...
Страница 438: ... 437 6 F 2 S 0 8 4 6 Appendix Q Failed Module Tracing and Replacement ...
Страница 444: ... 443 6 F 2 S 0 8 4 6 Appendix R Ordering ...
Страница 447: ......