TGXR6-40.5 series ring main unit is a complete set of power distribution device for 40.5kV three-phase AC 50Hz single busbar and single busbar sectional system, primarily suitable for power transmission in power generation companies and small and medium-sized generators, power distribution in industrial and mining enterprises, power receiving and power transmission in power system substations, and startup of large-scale high-voltage motor for control, protection, and monitoring.
TGXR6-40.5KV SF6 Ring Main Unit Technical Parameters
|2||Rated current||A||1250, 2500|
|4||Rated short-time withstand current||kA||25(21.8), 31.5(27.4)|
|5||Rated peak withstand current||kA||63(54.8), 80 (69.6)|
|6||Rated short-circuit current duration||s||4|
|7||Rated short-circuit breaking current||kA||25, 31.5|
|8||Rated short-circuit making current||kA||63, 80|
|10||Mechanical life||Circuit breaker||Times||10000|
|11||Electrical life of circuit breaker||Times||30 times|
|12||Rated charge pressure (gauge pressure at 20℃)||MPa||0.02|
|13||Min. functional pressure (gauge pressure at 20℃)||0|
|14||Annual leakage rate of SF6 gas||-||≤0.01%|
|Rated power frequency|
|Isolation fracture, vacuum fracture||118|
|Rated lightning impulse|
withstand voltage peak
|Isolation fracture, vacuum fracture||215|
|Rated voltage||V||DC:110, 220|
|1min power frequency withstand voltage||2000|
|18||Operation loss continuity category||-||LSC2B|
|19||Temperature rise test||A||1.1Ir|
a) The rated peak withstand current parameters and rated short-time withstand current of the current
transformer are evaluated separately;
b) The loop resistance refers to the measured resistance from the outgoing line of the busbar tie breaker
socket (including busbar tie breaker) to the outgoing line of the cable socket (including the current
device), with 20 subtracted when there are no busbar tie breaker and current device.
c) The value in parentheses is the parameter value of the grounded circui
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