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Splend Electric (Beijing) Co., Ltd
Tel：+86 10 50842888
Fax：+86 10 50842886
E-mail： splend@splendpower.com
Http：www.splendpower.com
Add：52A, No.17 Jing Sheng South 4th Street, Zhongguancun Science and
Tec hnology Park, Tongzhou District, Beijing-China
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Copyright: Splend Electric (Beijing) Co., Ltd. 京ICP备10023425号
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Capacitor protection unit
Capacitor protection unit
Capacitor protection unit
This SDCR11A of protection unit is stable and reliable, fully functional, using the current advanced digital signal processing technology and EMC Technology. This protection unit is mainly applied to the transmission and distribution system capacitor banks. Key features include: undervoltage protection, overvoltage protection, open delta voltage / differential current protection, two-step current protection, unbalanced current protection, input protection, PT breaking, harmonic current protection, harmonic voltage protection.
Technical Data
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Dimensions size and hole size |
Dimensions size |
205×135×82（L×W×D，mm） |
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Hole size |
186×130（L×W，mm） |
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Power supply |
Power supply |
AC/DC110-220V±15% |
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Rated sampling |
Rated voltage |
AC100V |
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Rated current |
1A/5A |
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Environmental conditions |
Ambient temperature |
-20℃~+70℃ |
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Ambient humidity |
≤95% |
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Pollution class |
III class |
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Sampling Inputs |
Protection sampling inputs |
Three-phase bus voltage |
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Open delta voltage / Differential current |
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Capacitor three-phase current |
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Bus voltage PT input |
10~150V |
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CT input |
0.2~50A |
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Open delta voltage PT inputs |
0.1~100V |
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Tolerance |
<0.5% |
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Binary Outputs |
Numbers of outputs |
1 group of Capacitors switch-on (Pulse) |
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1 group of Capacitors switch-off (Pulse) |
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1 circuit of Tripping Main switch (Pulse) |
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1 group of Capacitor lock-out |
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1 circuit of Alarm output (Holding) |
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Contacts capacity |
AC250V，16A（Pure resistance load） |
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Pulse duration |
≤2S |
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Binary Inputs |
Binary Inputs |
1 circuit of Capacitor feedback signal |
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Position signal of Capacitor outlet cabinet switch |
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Position signal of disconnector |
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1 circuit of Capacitor remote control switching signal |
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1 circuit of Capacitor remote control (protection) trip signal |