ZW32-12 primary and secondary combination pole-mounted circuit breaker assemblies (external capacitor) is an outdoor high-voltage switchgear with a rated voltage of 12kV, three-phase AC 50Hz. It consists of a pole-mounted circuit breaker body and a feeder terminal (FTU). , capacitor power supply is connected to each other through cables.
Product Overview
ZW32-12 primary and secondary combination pole-mounted circuit breaker assemblies (external capacitor) is an outdoor high-voltage switchgear with rated voltage 12kV, three-phase AC 50Hz . It is composed of a pole-mounted circuit breaker body, a feeder terminal (FTU), and a capacitor power supply connected to each other through cables. The circuit breaker and FTU can realize the functions of "centralized feeder automation and local feeder automation", and have the complete set of functions of segmentation, interconnection and demarcation circuit breakers. 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
| Item | Unit | Parameter |
| 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
Built-in high-precision electronic sensor: It has the characteristics of wide measurement range, good linearity, strong anti-interference ability, high measurement accuracy, small size and high reliability.
External capacitor power taking module: solves the problems of ferromagnetic resonance of electromagnetic PT and easy damage by lightning strikes.
The pole is cast using epoxy resin and silicone rubber APG process, which has good anti-condensation performance and mechanical strength.
Can be used for line segmentation, contact, branch, user demarcation and other occasions
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.
Optional integrated isolation knife gate
The main body chassis is made of 3mm thick high-quality stainless steel plate with high strength. Strong corrosion resistance
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
