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Help CenterBeijing Sifang Jibao Csc-285s Capacitor Protection and Measurement and Control Device
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1 CSC-285S Capacitor Protection and Measurement and Control Device
1.1 Device Introduction
This device is suitable for the protection, measurement, and control of capacitors with a voltage level below 35kV and can be installed locally in the switchgear.
1.1.1 Protection Functions
Table 1 List of Protection Functions
Serial Number |
Protection Function |
PT Wiring Method |
|
Three-phase Wiring |
VV Wiring |
||
1. |
Instantaneous Overcurrent Protection |
Applicable |
Applicable |
2. |
Overcurrent Protection (Can be Set as Definite-time/Inverse-time Protection) |
Applicable |
Applicable |
3. |
Zero-sequence Current Protection (Can be Set as Definite-time/Inverse-time Protection) |
Applicable |
Applicable |
4. |
Unbalanced Current Protection |
Applicable |
Applicable |
5. |
Total Current Protection |
Applicable |
Applicable |
6. |
Undervoltage Protection |
Applicable |
Applicable |
7. |
Overvoltage Protection |
Applicable |
Applicable |
8. |
Unbalanced voltage protection |
Applicable |
Applicable |
9. |
Full voltage protection |
Applicable |
Applicable |
10. |
Non - electrical quantity protection |
Applicable |
Applicable |
Note: In the VV connection mode, the zero - sequence current protection is not blocked by zero - sequence voltage. |
1.1.2 Measurement and control functions
a) Acquisition of 25 - way digital inputs, remote signaling change of the device, and accident remote signaling;
b) Normal remote opening and closing of the circuit breaker;
c) In the three - phase voltage connection mode, remote measurement of analog quantities such as phase current (Ica, Icc), phase voltage (Ua, Ub, Uc), line voltage (Uab, Ubc, Uca), active power (P, Pa, Pc), reactive power (Q, Qa, Qc), power factor COSφ, and frequency ƒ;
d) In the VV connection mode, remote measurement of analog quantities such as phase current (Ica, Icc), line voltage (Uab, Ubc, Uca), total active power P, total reactive power Q, power factor COSφ, and frequency ƒ;
e) Event SOE recording.
1.1.3 Other functions
a) PT disconnection alarm;
b) CT disconnection alarm;
c) Control circuit disconnection alarm;
d) Spring uncharged alarm
e) F - C over - current blocking;
f) Fault wave recording;
a) 6 sets of setting value areas;
b) 4 - 20mA output function.
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