Year1
- 额定电压：
- 12KV
- 额定电流：
- 630A
- 额定频率：
- 50HZ
When a fault occurs inside the user connected to the overhead distribution line, if the fault is in the incoming line section, or the fault occurs inside the user's incoming line switch, the protection action time limit does not cooperate with the protection of the substation outlet switch. At that time, it will cause the outgoing switch protection of the substation to trip. If the nature of the fault is permanent and the substation reconnection fails, an accident within the medium-voltage user area will cause a power outage to the entire distribution line. This common spillover accident in the distribution network will have a negative impact on society.
The user demarcation switch is an ideal device to solve the above-mentioned accidents. This device is installed at the responsibility demarcation point of the overhead distribution line and can automatically remove single-phase ground faults and automatically isolate phase-to-phase short circuit faults. Ensure the safety of electricity for non-faulty users.
R user boundary switch controller is specially used for intelligent control of the boundary switch body. To realize the protection control function and communication function, the controller and the switch body are electrically connected through the control cable and aviation connector to realize its protection and automatic monitoring functions. This product is widely suitable for urban and rural overhead distribution line users.
, use environmental conditions
)&Ambient temperature: outdoor&℃&~ +℃
b)&Seismic resistance: ground horizontal acceleration...vertical acceleration. Simultaneous action of three continuous sine waves is safe Coefficient &.
c)& Maximum daily temperature difference: ℃
)& Sunshine intensity: ./c (wind speed./h)
)& Maximum wind speed: &/
)& Maximum ice thickness:
)&Operating environment: outdoors, in places without flammable, explosive hazards, chemical corrosion and severe vibration
)&Neutral point grounding method: Neutral point ungrounded, neutral The point is grounded through the arc suppression coil, and the neutral point is grounded through low resistance.
, functions and features
.
Function
◇&Status indication&◇&Opening current blocking ◇&Phase-to-phase fault identification&◇&Event record
◇&Zero Sequence protection◇&real-time clock◇&measurement and control (except R◇&remote control
(Note: after controlled opening, remote control closing is invalid.
.&Functional features
) The opening and closing circuit adopts The software and hardware are designed to prevent malfunction and have anti-jump function
b)&The zero-sequence current can distinguish faults in the area from outside the area
c)&The remote control opening and closing adopts the design to prevent maloperation
)Parameters can be set or set by coded digital switches
)Parameters can be read by (except R).
.&Structural features
)&The controller is an independent waterproof sealed body, cylindrical structure, microcomputer-type relay protection and monitoring device
b)&The controller has strong weather resistance, Anti-condensation protective features and small size and light weight structural features
c)&Tong is connected to the switch body through aviation connectors and multi-core control cables, with good connection reliability and high protection level.
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