FDR-2 User Boundary Breaker Controller
FDR-2 User Boundary Breaker Controller
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Main uses and scope of application
When there is a fault inside the user of T connection of 10kV overhead distribution line, such as the fault is in its inlet section, or the fault occurs inside the user's inlet switch, but the protection action time limit is not matched with the protection of the transformer substation's outlet switch, it will cause the transformer substation's outlet switch to fall off. If the fault is permanent and the substations do not coincide successfully, then an accident within the medium-voltage user boundary will make the entire distribution line lose power. This kind of accident which is common in the distribution network will cause a bad impact on society.
The user boundary switch is the appropriate equipment to solve those accidents. The equipment is installed at the responsibility cut-off point of 10kV overhead distribution line, which can automatically remove single-phase grounding fault and automatically isolate phase short-circuit fault. Ensure the safety of non-fault users.
FDR-2 user boundary switch controller is a special intelligent control for boundary switch body. The protection control function and communication function are realized. The controller and the switch body are electrically connected through control cables and aviation connectors to realize the protection and automatic monitoring functions. The product is widely used in urban and rural 10kV overhead power distribution line.
Product Features
Rapid
break protection;
Zero sequence protection;
Professional manual operation (GPRS, fiber optic);
Over-current protection;
Acceleration after reclosing;
Reclosing three times;
Real-time status query;
GSM SMS function;
Record;
Controlled by smart palmtop;
Remote control closing (distance ≥ 100 meters);
Inrush current protection.
Technical parameter
No
Project
Data
Remarks
1
Input operating voltage
AC220V
Allowable range of fluctuation ± 20%
2
Input operating voltage frequency
50Hz
3
Machine power consumption
＜10W
4
Output voltage (on-off operation)
DC220V
5
Secondary phase current sampling
input value
0.2~20A
Secondary phase current above 100A
allows saturation
6
Secondary zero sequence current
sampling input value
0.01A~5A
Secondary zero sequence current
allows saturation above 5A
7
Secondary current sampling accuracy
±3%
Saturated area is not required
8
Interphase protection action delay
time setting range
0.1~10s
Adjustable range
9
Zero sequence protection action delay
time setting range
0~7200s
Adjustable range
10
Reclosing times
1~3s
Adjustable range
11
First coincidence time
0.3~600s
Adjustable range
12
Second, third coincidence time
5~600s
Adjustable range
13
Insulation resistance
＞100MΩ/DC500V
1. External terminals are grounded
together
14
Power frequency withstand voltage
2000V/1min
Same as above
15
Shock frequency
5000V,1.2/50μS
Positive and negative three times
each
1. Power supply, switch control
output terminal together to ground
2. Power input terminal to power supply, switch
control output terminal
3. Switch state input terminal to power supply,
switch control output terminal
2. The power input terminal is grounded together
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