ZW32-12 primary and secondary integrated pole-mounted circuit breaker is an outdoor high-voltage switchgear with a rated voltage of 12kV, three-phase AC 50Hz. It consists of the pole-mounted circuit breaker body, feeder terminal (FTU), voltage transformer through cables Made up of interconnections.
Product Overview
The ZW32-12 primary and secondary integrated pole-mounted circuit breaker is an outdoor high-voltage switchgear with a rated voltage of 12kV, three-phase AC 50Hz. It is composed of a pole-mounted circuit breaker body, a feeder terminal (FTU), and a voltage transformer connected to each other through cables. It can realize the functions of "centralized feeder automation and local feeder automation", has a complete set of functions of segmentation, contact and demarcation circuit breakers, and can collect three-phase current, zero-sequence current, line voltage, zero-sequence voltage, active power and reactive power. Power and electrical energy harvesting and other functions. It is mainly used to break and close the load current and short-circuit current of the power system. It is suitable for 10kV distribution networks in substations and power systems. It is especially suitable for use in environments with serious pollution and places with frequent operations. It is also the preferred product for urban and rural power distribution automation.
Technical Parameters
Name | Unit | Value |
Rated voltage | kV | 12 |
1min power frequency withstand voltage (phase to phase, to ground /fracture) | kV | 42/48 |
Lightning impulse withstand voltage (phase to phase, ground/fracture) | kV | 75/85 |
Rated current | A | 630 |
Rated Frequency | Hz | 50 |
Rated short-circuit breaking current | kA | 20, 25 |
Rated short-circuit making current (peak) | kA | 50, 63 |
Rated peak withstand Current | kA | 50, 63 |
Rated short-time withstand current | kA | 20, 25 |
Rated short-term withstand time | s | 4 |
Rated operating cycle | O-0.3s-CO-180s-CO | |
Rated short-circuit current breaking times | times | 30 |
Mechanical life | times | 10000 |
Rated operation of auxiliary circuit Voltage | V | DC24 |
Note: When the altitude of the product use place is higher than 2000m, the insulation withstand voltage should be adjusted accordingly Correction.
Features
It adopts industry-leading electronic zero-sequence voltage sensors, as well as high-precision zero-sequence current and phase current sensors, which have the characteristics of wide measurement range, high measurement accuracy and high reliability.
Can be used for line segmentation, contact, branch, user demarcation and other occasions
The product adopts a three-pillar structure. The vacuum arc extinguishing chamber is connected to the operating mechanism through an insulating tie rod. The performance is stable and reliable.
The pole is cast using epoxy resin and silicone rubber APG process, which has good anti-condensation performance and mechanical strength.
It adopts high-performance spring operating mechanism with long mechanical life and has both electric and manual energy storage and opening and closing operation functions.
The main body chassis is made of 3mm thick high-quality stainless steel plate with high strength. Strong corrosion resistance
It has the advantages of miniaturization, novel appearance, light weight and easy installation.
Optional integrated isolation knife gate
Product usage environment
Ambient air temperature: -40℃~+70℃
Altitude: Not exceeding 2000m
Installation location: A place free of flammable, explosive, chemically corrosive substances and frequent severe vibration
Safety pollution level: Level IV
Wind pressure: no more than 700Pa (equivalent to 35m/s sealing)
Note: When the above usage environment conditions are exceeded, please contact us