JRHZW□-12 primary and secondary deep combination pole-mounted circuit breaker assemblies(built-in 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 and a feeder terminal (FTU) connected to each other through cables. The solid-sealed pole is deeply integrated with current sensors, voltage sensors, and capacitive power-taking modules
Product Overview
JRHZW□-12 primary and secondary deep combination pole-mounted circuit breaker assemblies(built-in power-taking)is a an outdoor high-voltage switchgear with a rated voltage of 12kV and a three -phase AC 50Hz. It is composed of a pole-mounted circuit breaker body and a feeder terminal (FTU) connected to each other through cables. The solid-insulation-embedded pole deeply combines current sensors, voltage sensors, and capacitive power-taking module . 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, interconnection 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.
Technical parameters
| Item | 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 place where the product is used is higher than 2000m When , 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.
Built-in capacitor power-taking module: solves the problems of ferromagnetic resonance of electromagnetic PT and easy damage by lightning strikes.
Low power consumption design: The feeder terminal adopts ultra-low power consumption design, with the overall average power consumption less than 1.2W (4G Ethernet communication mode)
Integrated sealing: The vacuum arc extinguishing chamber, current and voltage sensor, capacitor power-taking module, main conductive circuit 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 performance Anti-condensation performance and mechanical strength
Bilateral voltage sampling: equipped with bilateral voltage sampling on the power side and load side
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
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
