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SCTB series current transformer overvoltage protector
In the power system, current transformers (CTs) are used for measuring and controlling primary current. During normal operation, the secondary side of
Product details
CTBThe series current transformer overvoltage protector is mainly used for various purposesCTAbnormal overvoltage protection on the secondary side. The protector is connected to both ends of the secondary winding, and during normal operation, the leakage electrode is small and in a high resistance state. When an abnormal overvoltage occurs, the protector quickly acts and short circuits, and the panel displays the faulty area with passive signal output. After troubleshooting and restoring the circuit to its original state, it resumed normal operation. protectorApplied to various fieldsCTDifferential winding, overcurrent winding, measuring winding, busbar protection winding, backup winding, etc. on the secondary side.
Performance characteristics
After protection, there is a display of the location of the fault point, which is convenient for troubleshooting
After protection, there is a contact signal output for easy system connection and use
Embedded or rail mounted design, convenient for installation and use
The product uses industrial grade electronic chips to achieve industrial automation control
The product adopts unique anti-interference technology to enhance its anti-interference ability
The product has the characteristics of high reliability, long service life, and fast action
The product has a delicate appearance and is easy to install
Type Designation
TECHNICAL INDEX
Electrical performance
Normal leakage current≤1mA
turn-on voltage150V±20%(Default, customizable according to user requirements)
conducting time Ts≤20ms
useCTThe peak value on the secondary side of the specification is greater than150V
Switching Output Alarm relay output capacity:AC220V/5A，DC28V/5A
Protection relay output capacity:AC220V/5A
Switching input Dry node input, used for remote reset signal input
protective current 5A
power consumption≤5W
Reset mode
Reset mode Manual reset or remote reset
Auxiliary power supply
Working power supply AC/DC：80V～265V
secure
ac withstand voltage AC 2kV
Seismic performance 10-50-10Hz 2g 3min
work environment
operation temperature -20℃～70℃
Working humidity ≤95%RHIn non corrosive gas environments
altitude ≤2000m
Specification selection
Model Function |
CTNumber of windings |
Switching input |
Switching Output |
CTB-01 |
1 |
1 |
1 |
CTB-03 |
3 |
1 |
1 |
CTB-04 |
4 |
1 |
1 |
CTB-06 |
6 |
1 |
1 |
CTB-09 |
9 |
1 |
1 |
CTB-12 |
12 |
1 |
1 |
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