Product Overview
The medium voltage indoor withdrawable switchgear assembly line is a custom non-standard automated production line dedicated to the electrical complete equipment industry. It is mainly developed for mass assembly and production of KYN28A-12 armored removable AC metal-enclosed withdrawable switchgear. Meanwhile, it supports flexible production of KYN61-40.5 high-voltage switchgear and a full range of low & medium voltage distribution cabinets. It serves as core cabinet assembly and inspection production line equipment for high-voltage electrical complete set manufacturers to replace traditional decentralized operations and achieve standardized mass production.
Designed fully in accordance with industrial production specifications for high-voltage switchgear and distribution cabinets, the complete assembly line can perform a full sequence of processes in one continuous workflow: cabinet pre-assembly, primary component fitting, busbar installation, secondary circuit wiring, cabinet cleaning and commissioning, power frequency withstand voltage test, partial discharge detection, air tightness leak test, and finished product verification & offloading. It effectively addresses key industry pain points of traditional switchgear production lines: standalone operation, frequent overhead crane lifting & transferring, difficult high-position assembly, separate inspection processes leading to cabinet collision & deformation, inconsistent production takt and poor product uniformity.
This high-voltage switchgear assembly line fits mass production scenarios in 10kV / 35kV low & medium voltage complete equipment workshops. It meets the requirements of continuous mass production of KYN28A-12 withdrawable switchgear on the assembly line, and also supports prototype and batch production of KYN61 high-voltage switchgear and various distribution cabinets. It is a highly versatile general-purpose automated production line for high-voltage cabinets.
System Composition & Technical Specifications
1. Heavy-duty Roller Conveyor Production System
The core conveying unit of this switchgear production line adopts a segmented independent drive structure, specially engineered for heavy high-voltage cabinets. Its rated load capacity per station ≥2500kg, fully suitable for full cabinet transportation of fully fitted KYN28A-12 withdrawable switchgear, KYN61 high-voltage switchgear and large distribution cabinets.
Rollers are made of φ89×3.5mm seamless steel pipe with thickened polyurethane coating, which prevents paint scratches and edge collision on high-voltage switchgear and distribution cabinets. The production line frame is fabricated by welding 120×60×3mm thick rectangular tubes, treated by sand blasting and electrostatic powder coating for corrosion resistance, adapting to long-term workshop environments with moisture and dust.
Adjustable conveying speed: 0.05~0.25m/min. Low speed for stable precision assembly; higher speed for mass production flow. The full assembly line is equipped with mechanical positioning stoppers at each station, foot-operated start-stop switches and infrared position sensors to realize accurate cabinet positioning, jog fine-tuning and fixed-point locking, ensuring stable operation of switchgear and distribution cabinets at all assembly stations.
The whole production line supports linear modular layout with reserved expansion interfaces for lifting & transferring units, rotating stations and buffer stations. It can be upgraded flexibly according to the dimensions of KYN series cabinets and distribution cabinets as well as production capacity requirements.
2. Dual-side Modular Elevated Working Platform (Matching for Assembly Line)
As a core matched workstation of the medium voltage indoor withdrawable switchgear assembly line, the dual-side elevated working platform is welded from Q235B standard carbon steel profiles. The platform surface uses 3mm anti-slip patterned steel plate, with rated uniform load ≥200kg/㎡, no deformation under load of multiple operators and assembly tools.
The assembly line is fitted with 1.2m high standard safety guardrails and anti-slip steel ladders, fully complying with mechanical safety regulations to eliminate risks during elevated work. The working height of the platform is precisely matched to the bus chamber and instrument compartment of KYN28A-12 withdrawable switchgear, and also compatible with the assembly of taller KYN61 high-voltage switchgear. It perfectly solves high-position operation challenges including upper busbar connection, secondary cable routing, instrument component installation and cabinet commissioning for high-voltage switchgear and distribution cabinets.
The platform adopts modular assembly structure; its opening width and working spacing can be adjusted flexibly according to the outer dimensions of different switchgear and distribution cabinets. The whole platform is anti-corrosion powder coated, wear-resistant and durable, supporting 24-hour continuous operation of the production line.
3. Integrated High Voltage Test Chamber Workstation (Integrated Configuration on Assembly Line)
This high-voltage switchgear assembly line integrates a closed high voltage test chamber workstation. It abandons the separated assembly and inspection mode of traditional production lines, enabling assembly and inspection of switchgear and distribution cabinets completed on the same line.
The test chamber is constructed with thick steel plate sealed structure, reserved with dedicated high-voltage test wiring ports and explosion-proof observation windows for operators to monitor cabinet test status in real time. The chamber is equipped with intelligent safety interlock door system implementing strict access interlock logic: the high voltage test circuit cannot be energized unless the chamber door is fully closed, protecting operators on the production line at hardware level.
This inspection workstation seamlessly supports factory mandatory tests for KYN28A-12 withdrawable switchgear, KYN61 high-voltage switchgear and low & medium voltage distribution cabinets: power frequency withstand voltage test, partial discharge detection and air tightness leak test. Cabinets are directly conveyed into the chamber by roller assembly line without secondary hoisting or off-site transfer, greatly reducing non-conformities such as high-voltage cabinet deformation, paint damage and insulation layer failure, while improving inspection efficiency and product pass rate of the production line.
4. Intelligent Electrical Control System (Central Control for Whole Assembly Line)
The complete switchgear production line adopts PLC programmable controller for centralized control with independent segmented circuits for each workstation and industrial touch screen for human-machine interface, delivering intuitive operation.
The system supports manual / automatic dual operation modes, which can be switched flexibly according to assembly line production takt and cabinet types (withdrawable switchgear, KYN61 high-voltage cabinet, distribution cabinet). It is embedded with multiple safety protection mechanisms including overload protection, emergency stop interlock, photoelectric anti-pinch, real-time workstation status feedback and fault alarm to guarantee stable and safe operation of the production line.
The control system reserves communication interfaces for MES workshop management system, enabling workstation data collection, production capacity statistics, process traceability and equipment status monitoring of the production line, meeting upgrade requirements for intelligent complete equipment workshops. All motors, sensors and contactors on the line use industrial-grade components for long-time continuous production. Control circuit voltage: AC220V; power circuit voltage: AC380V, stable operation and low failure rate.
Core Technical Features
- Strong Compatibility for Multiple Cabinet Types: The full high-voltage switchgear assembly line is precisely designed for the complete production process of KYN28A-12 withdrawable switchgear. It also supports full-process assembly, wiring and inspection of KYN61-40.5 high-voltage switchgear and various low & medium voltage distribution cabinets. As a primary general-purpose production line equipment for high-voltage complete equipment workshops, it balances standardized mass production and flexible manufacturing.
- Heavy-duty Stable Conveyance Design: The roller conveyor system of the production line is specially optimized for heavy high-voltage cabinets with high load capacity and stable running. The coated protection structure fully protects the appearance quality of finished switchgear and distribution cabinets and significantly reduces collision defects during production.
- Ergonomically Optimized Workstations: The dual-side elevated working platform of the assembly line solves the industry problem of insufficient working space for high-position assembly of withdrawable switchgear, high-voltage cabinets and distribution cabinets. The full enclosure protection structure meets safety production standards and greatly improves operation efficiency and construction safety.
- Integrated Assembly & Inspection: Breaking the drawback of separated processes in traditional production lines, it realizes closed-loop production including cabinet assembly, wiring, withstand voltage test and partial discharge test on one line. Multiple hoisting and transferring operations are eliminated, cutting the production cycle of switchgear and distribution cabinets by more than 30%.
- Flexible Modular Customization: The whole production line adopts modular assembly structure. The total length of assembly line, number of workstations, platform dimensions and inspection module configuration can be freely adjusted according to workshop space, production capacity planning and cabinet specifications to satisfy personalized production demands of various complete equipment manufacturers.
- Multi-layer Safety Interlock Protection: The production line is equipped with multiple protection mechanisms: emergency stop interlock, chamber door safety lock, photoelectric anti-pinch, overload power-off and fault alarm. It ensures full safety of equipment, cabinets and personnel, complying with national mechanical equipment safety codes and high-voltage electrical production standards.
Application Fields
This medium voltage indoor withdrawable switchgear assembly line is widely used in various high-voltage electrical complete equipment manufacturers. It is mainly applied to the full process of KYN28A-12 armored removable withdrawable switchgear and KYN61-40.5 high-voltage switchgear: cabinet assembly, primary component installation, busbar system assembly, secondary circuit wiring, insulation withstand voltage test, partial discharge detection, air tightness test and finished product verification & delivery. Meanwhile, it fully supports batch production and prototype manufacturing of various low & medium voltage distribution cabinets and metal-enclosed switchgear with similar outer dimensions. It is the core main production line equipment for standardization, automation and intelligent manufacturing in high-voltage electrical complete equipment workshops.