Isolation operating mechanism on 12kV environmental protection cabinet (air insulated without SF6 gas)
Key attributes
| Brand | Switchgear parts |
| Model NO. | Isolation operating mechanism on 12kV environmental protection cabinet (air insulated without SF6 gas) |
| Rated voltage | 12kV |
| Rated normal current | 630A |
| Rated frequency | 50/60Hz |
| Series | GHK-J12 |
Product descriptions from the supplier
The isolation operating mechanism on the GHK-J12 environmental protection cabinet is equipped with a GHK-J12 circuit breaker reclosing spring operating mechanism, and the isolation part is equipped with a RNHSG-07 compression spring isolation operating mechanism. The isolation machinery is a forward type, and the V operating mechanism is a reverse type. It adopts a single rod mechanical structure to achieve interlocking with the lower door. Only when the main circuit is in the open state and reliably grounded, can the interlocking return position open the lower door. The overall structure of the mechanism is compact, and the operation interlocking meets the five prevention requirements. The operating mechanism complies with the relevant requirements of standards such as GB1984-2014, GB/T1022-2020, GB3804-2017, GB3906-2020, etc.
Operation of opening and closing the mechanism
Power transmission operation:
①. Close the door; ②. Insert the handle into the grounding operation hole of the G mechanism and operate counterclockwise to separate the locking/grounding of the lower door; ③. Insert the handle into the isolation operation hole of the G mechanism and operate counterclockwise to close the isolation switch; ④. Insert the handle into the energy storage operation hole of the V mechanism and operate clockwise to store energy in the circuit breaker; ⑤. Press the green button on the V mechanism to close the circuit breaker switch.
Power outage operation:
①. Press the red button on the V mechanism to open the circuit breaker switch; ②. Insert the handle into the isolation operation hole of the G mechanism and operate clockwise to open the isolation switch; ③. Insert the handle into the grounding operation hole of the G mechanism and operate clockwise to close the grounding switch; ④. Insert the handle into the energy storage operation hole of the V mechanism and operate clockwise to store energy in the circuit breaker; ⑤. Press the green button on the V mechanism to close the circuit breaker switch, and only then can the lower door be opened.
Product Parameters
| Serial Number | Item | Unit | Parameter |
|---|---|---|---|
| 1 | Voltage Level | V | AC/DC220; AC/DC110; DC48; DC24 |
| 2 | Rated Power | W | 40 |
| 3 | Operating Environment | °C | -40~+40 |
| 4 | Power Frequency Withstand Voltage | kv | 2/1min |
| 5 | Normal Operating Voltage Range of Closing Coil | UL | 85%~110% |
| 6 | Normal Operating Voltage Range of Opening Coil | UL | 65%~110% |
| 7 | Low Voltage Operating Range | UL | ≤30% (no operation for 3 times of closing and opening) |
| 8 | Salt Spray Resistance Grade | h | 96 |
Installation dimensions
Related Products
-
12KV environmentally friendly (air insulated SF6 gas free, nitrogen filled) isolation switch
-
12kV environmentally friendly fully sealed (air insulated without SF6 gas) upper isolation circuit breaker switch
-
Isolation operating mechanism under 12kV environmental protection cabinet (air insulated without SF6 gas)
-
12kV environmental protection cabinet (air insulated without SF6 gas) PT isolation operating mechanism
-
12KV environmentally friendly (air insulated without SF6 gas) vacuum circuit breaker switch under isolation
-
12KV environmentally friendly (air insulated without SF6 gas) vacuum circuit breaker switch (upper isolation)
-
Copper stranded wire flexible connection (copper compression joint at both ends)
Related Knowledges
-
What are the standards for calibration of online power quality monitoring devices?Core Standards for Calibration of Online Power Quality Monitoring DevicesThe calibration of online power quality monitoring devices follows a comprehensive standard system, encompassing mandatory national standards, industry technical specifications, international guidelines, and requirements for calibration methods and equipment. The following provides a structured overview with practical recommendations for real-world applications.I. Core Domestic Standards1. DL/T 1228-2023 – Technical RequireEdwiin10/30/2025 -
110 kV Transformer Neutral Point Lightning Overvoltage: ATP Simulation & Protection SolutionsThere is extensive literature on the analysis of overvoltage at transformer neutral points under lightning surge conditions. However, due to the complexity and randomness of lightning waves, an accurate theoretical description remains elusive. In engineering practice, protective measures are typically determined based on power system codes by selecting appropriate lightning protection devices, with abundant supporting documentation available.Transmission lines or substations are susceptible to lFelix Spark10/30/2025 -
What Is Discharge Load for Energy Absorption in Power Systems?Discharge Load for Energy Absorption: A Key Technology for Power System ControlDischarge load for energy absorption is a power system operation and control technology primarily used to address surplus electrical energy caused by load fluctuations, power source faults, or other disturbances in the grid. Its implementation involves the following key steps:1. Detection and ForecastingFirst, real-time monitoring of the power system is conducted to collect operational data, including load levels andEcho10/30/2025 -
Why Monitoring Accuracy Matters in Power Quality SystemsThe Critical Role of Monitoring Accuracy in Power Quality Online DevicesThe measurement accuracy of online power quality monitoring devices is the core of the power system’s “perception capability,” directly determining the safety, economy, stability, and reliability of power supply to users. Inadequate accuracy leads to misjudgment, incorrect control, and flawed decision-making—potentially causing equipment damage, economic losses, or even grid failures. Conversely, high accuracy enables precisOliver Watts10/30/2025 -
How Does Power Dispatching Ensure Grid Stability and Efficiency?Electric Power Dispatching in Modern Power SystemsThe power system is a critical infrastructure of modern society, providing essential electrical energy for industrial, commercial, and residential use. As the core of power system operation and management, electric power dispatching aims to meet electricity demand while ensuring grid stability and economic efficiency.1. Basic Principles of Electric Power DispatchingThe fundamental principle of power dispatching is to balance supply and demand byEcho10/30/2025 -
How to Improve Harmonic Detection Accuracy in Power Systems？The Role of Harmonic Detection in Ensuring Power System Stability1. Importance of Harmonic DetectionHarmonic detection is a critical method for assessing the level of harmonic pollution in power systems, identifying harmonic sources, and predicting the potential impact of harmonics on the grid and connected equipment. With the widespread use of power electronics and the increasing number of nonlinear loads, harmonic pollution in power grids has become increasingly severe. Harmonics not only disrOliver Watts10/30/2025
