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Primary and secondary fusion intelligent column circuit breaker
The complete set of equipment for primary and secondary fusion columns is suitable for outdoor overhead lines with a rated voltage of 12kV and a frequ
Product details
Product Introduction
The complete set of equipment for primary and secondary fusion columns is suitable for rated voltage12kVfrequency50HzThe outdoor overhead power line can be used for various occasions such as segmentation, connection, and boundary, to achieve the control of the power lineMonitoring, control, and troubleshooting.
The primary and secondary fusion column mounted equipment consists of a column mounted switch body, an intelligent terminal, and supporting software. The switch body integrates key components such as current sensors, voltage sensors, and capacitor power modules, enabling manual, electric, and remote operation. This device determines the type of line fault by real-time collection of voltage, current, and other data, achieving active disconnection and fault isolation. The generated fault information can be transmitted to the main station through wireless communication.
The integrated design concept is adopted for the complete set of equipment on the primary and secondary fusion columns, achieving organic integration of primary and secondary equipment, which is an important guarantee for the reliable operation of the power system.
The complete set of primary and secondary fusion circuit breakers uses capacitor power instead of electromagnetic voltage transformers to meet the requirements of power supply and switch driving for various feeder terminals.
Product Features
Three phase pillar structure;
Fully enclosed structure: good sealing performance, with excellent moisture-proof and anti condensation effects, suitable for use in high temperature and humid areas;
Vacuum arc extinguishing, reliable insulation;
Reliable breaking and closing performance, without combustion and explosion hazards;
Small size, light weight, maintenance free, long service life;
Can achieve manual/electric operation;
The operating mechanism is sealed at the bottom of the switch box, which can effectively prevent corrosion caused by long-term exposure to outdoor environments;
The operating mechanism has a novel design, simple structure, reliable action, small size, and a lifespan of over 10000 times;
Equipped with wireless communication function, it can be connected to the feeder automation main station system;
Can collect voltage, current, and switch status information;
Can detect fault information such as line grounding, short circuit, overload, three-phase imbalance, etc., and complete tripping or alarm output according to system settings;
Support remote setting of protection settings and remote opening and closing operations;
Intelligent terminals have good anti electromagnetic interference performance;
Equipped with a backup power supply, it ensures normal operation in case of power outage and meets the continuous opening and closing operation of the circuit breaker.
Product parameters
Performance parameters of circuit breaker body
|
performance parameter |
unit |
numerical value |
|
|
Circuit breaker standard |
- |
GB 1984 |
|
|
Rated voltage ur |
[kV] |
12 |
|
|
Rated power frequency withstand voltage ud (lmin) |
[kV] |
42 |
|
|
Lightning impulse withstand voltage up |
[kV] |
75 |
|
|
Rated frequency fr |
[Hz] |
50 |
|
|
Rated current Ir |
[A] |
630 |
|
|
Rated short-circuit breaking current ISc |
[kA] |
20 |
25 |
|
Rated short-time withstand current Ik (4s) |
[kA] |
20 |
25 |
|
Rated peak withstand current IP |
[kA] |
50 |
63 |
|
Operation sequence |
- |
O-0.3s-CO-15s-CO |
|
|
electromagnetic compatibility |
- |
GB/T 11022 |
|
|
The center distance between the phases of the circuit breaker is mm |
mm |
340 |
|
Performance parameters of isolation switch
|
performance parameter |
unit |
numerical value |
|
The distance between isolated and disconnected air |
[mm] |
≥200 |
|
Rated power frequency withstand voltage Ud, universal value/isolation break □ |
[kV] |
42/48 |
|
Lightning impulse withstand voltage Ud, universal value/isolated break □ |
[kV] |
75/85 |
|
Three phase asynchronous opening and closing |
[ms] |
≤10 |
|
Contact spring overtravel |
[mm] |
8-9.5 |
Control terminal technical parameters
|
Technical Parameter |
unit |
numerical value |
|
control voltage |
[V] |
DC 24 |
|
Operating power consumption of the whole machine |
[W] |
<2 |
|
Rear power capacity, lithium iron phosphate battery |
[Ah] |
45 |
|
Communication method |
- |
GPRS |
Typical applications
The primary and secondary fusion device is an automation device that integrates telemetry, remote signaling, remote control, and protection setting, and is applied to the overhead lines of the 12KV distribution network. This product adopts a fully sealed box structure with superior protective performance.
The primary and secondary fusion device integrates the vacuum arc extinguishing chamber, current transformer, and voltage sensor as a whole, achieving the goal of miniaturization and maintenance free. The circuit breaker can be combined with an isolation switch to form a circuit breaker. It can be equipped with an intelligent controller and comes with its own PT power supply for easy on-site installation.
The primary and secondary fusion device includes the main body, power module, signal processing unit, and front-end acquisition device. The front-end acquisition device real-time collects the three-phase current, three-phase voltage, zero sequence voltage, zero sequence current, and circuit breaker switch status of the circuit.
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