abb 4028en
TRANSCRIPT
-
7/28/2019 ABB 4028en
1/4
Rated voltage 123-170 kV
Rated current 3150 A
Rated breaking current 40 kA
Installation Outdoor/Indoor
Switching Module
LTB Compact
-
7/28/2019 ABB 4028en
2/4
-
7/28/2019 ABB 4028en
3/4
Benefits Due to...
High availability... ... no or few traditional disconnectors required.
... fast, easy replacement of the circuit breaker unit.
... optional condition monitoring.
Lower maintenance cost..... ... predictive maintenance via optional condition monitoring and self
diagnostics.
... maintenance free fixed contacts.
Reduced space requirement.... ... no or few traditional disconnectors required.
... optional compact design including integrated instrument transformers.
Enhanced safety... ... reduced maintenance work in the switchyard.
Short installation time... ... pre-fabricated and pre-tested Switchgear Modules.
... reduced civil work and less switchyard material
Main features and advantages
The main advantage with a trolley
mounted circuit breaker is that the
disconnector function is achieved by the
moving of the complete breaker unit. Thus,
the conventional disconnectors are replaced by
a maintenance free disconnector function with
fixed contacts.
The circuit breaker can also be withdrawn for
service or replaced with a spare unit in a short
time.
Cost savings compared to traditional design isdue to less foundations, steel structures and
space requirements. Use of less connectors and
insulators, smaller earthing grid and fibre optics
replacing signal cables will also lower installation
costs.
Condition monitoring enables maintenance when
needed instead of timebased maintenance.
For more detailed informationThis pamphlet includes general information about the
Switching Module - LTB Compact. If more detailed tech-
nical information for the individual components included
in the LTB Compact (e.g. LTB circuit breaker, BLK
operating mechanism, etc.) is required, please contact
ABB Power Technology Products AB.
-
7/28/2019 ABB 4028en
4/4
ABB Power Technology Products AB
High Voltage ProductsSE-771 80 LUDVIKA, SwedenTel +46 240 78 20 00Fax +46 240 78 36 50Internet:www.abb.com
CataloguePubl.PTHVP/MD
4028en
Edition4,
2001-01
ProdoucedbyHVP/MD
AO
Technical Data for LTB 123-170 Compact
Rated voltage (IEC, ANSI) 121/123 145 169/170 kV
Power frequency withstand voltage1 min dry(IEC) 230 275 325 kV1 min wet (IEC) 230 275 325 kV1 min dry (ANSI) 260 310 365 kV10 sec wet (ANSI) 230 275 315 kV
Disconnector functionImpulse voltage 1.2/50 s across open pole (IEC) 630 750 860 kVPower frequency withstand voltageacross open pole (IEC) 265 315 375 kV
Lightning impulse withstand voltage, (LIWL), (IEC) 550 650 750 kVFull wave 1.2/50s (ANSI) 550 650 750 kVChopped wave 2 s (ANSI) 710 838 968 kVChopped wave 3 s (ANSI) 632 748 862 kV
Phase distance 1500 1750 2000 mm
Creepage distance to earth 1) 2)
Normal 4015 4015 5045 mm
Long 4585 4585 5790 mmCreepage distance across break 1) 2)
Normal 3800 3800 4887 mmLong 4335 4335 5550 mm
Rated normal current 3150 A
Rated breaking current 31.5/40 kA
First pole to clear factor 1.5
Making current/peak (IEC) 79/100 kAMaking current/peak (ANSI) 85/108 kA
Duration of short circuit 3 s
Closing time 40 msOpening time 20 msTotal break time 40 msDead time 300 ms
Rated reclosing time, 50 Hz (ANSI) 20 cycles
Rated operating sequence, (IEC, ANSI) O-0,3 sec-CO-3 min-CO
CO-15 sec-CO
Values complying with IEC 56 (50 Hz and 60 Hz) and ANSI C37 (60 Hz)1) Other values on request2) Tolerances according to IEC 233.