ZW32-12 primary and secondary deep combination pole-mounted circuit breaker (electronic CT) 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 Transformers are connected to each other via cables. The solid-sealed pole has built-in current sensors and voltage sensors. 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.
Product Overview
ZW32-12 primary and secondary deep combination pole-mounted circuit breaker (electronic CT) 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 voltage transformer connected to each other through cables. The solid-sealed pole has built-in current sensors and voltage sensors. The circuit breaker and FTU can realize the functions of "centralized feeder automation and local feeder automation". It has a complete set of functions of segmentation, contact and demarcation circuit breakers, and can collect three-phase current, zero-sequence current, three-phase voltage, and zero-sequence voltage. , active power, reactive power and electrical energy collection 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.
| Item | Unit | Parameter |
| Rated voltage | kV | 12 |
| 1min power frequency withstand voltage (phase to phase, 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 closing 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 operating voltage of auxiliary circuit | V | DC24 |
Note: When the altitude of the place where the product is used is higher than 2000m, the insulation withstand voltage should be corrected accordingly.
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.
Integrated sealing: The current and voltage sensors and some insulating support components are sealed with epoxy resin through the APG process to form an organic whole, and are encapsulated with silicone rubber to have 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.
The main body chassis is made of 3mm thick high-quality stainless steel plate with high strength. Strong corrosion resistance
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
