Armored Removable AC Switchgear
The Armored Removable AC Switchgear is a high-performance medium-voltage electrical distribution system specifically engineered for industrial power networks, utility substations, commercial infrastructure, and smart-grid applications. The switchgear adopts a metal-clad armored structure combined with a removable withdrawable unit design, integrating vacuum circuit breakers, protection relays, busbar systems, metering devices, and intelligent control components into a compact modular cabinet configuration. This advanced structure significantly improves operational safety, maintenance efficiency, and system reliability for modern electrical distribution environments. Designed according to international medium-voltage distribution standards, the armored removable AC switchgear provides excellent insulation performance, internal arc resistance, and mechanical durability under demanding operating conditions. The withdrawable breaker mechanism allows convenient maintenance and rapid replacement while reducing operational downtime and improving personnel safety during inspection procedures. The compartmentalized enclosure design effectively isolates busbar sections, cable chambers, breaker compartments, and control circuits to minimize fault propagation risks and enhance overall system protection. The Armored Removable AC Switchgear supports intelligent monitoring systems, remote communication protocols, and automated protection functions for modern digital substations and smart-grid infrastructure. With flexible configuration capabilities and scalable electrical distribution architecture, the system delivers dependable medium-voltage switching and protection performance for industrial automation systems, renewable energy projects, utility power networks, transportation infrastructure, and mission-critical electrical facilities.
- Primary Voltage Ratings 3.6kV / 7.2kV / 12kV / 24kV / 40.5kV
- Type Switchgear
- Standards IEC 62271 / GB / ANSI / IEEE
- Application petrochemical plants, railway substations, data centers, ports
- Certificate UL, CESI, IEEE
- Cooling Method ONAN / ONAF
Technical Specifications
Customization Optional
Packing and Shipping
Manufacturer Test
Routine Testing
Application
Technical Specifications
Armored Removable AC Switchgear
Armored Removable AC Switchgear Data Sheet
| Parameter Category |
Technical Parameter |
Specification Range / Typical Value | Unit | Remarks / Standard |
| Rated Voltage | Ur | 12 / 24 | kV | IEC 62271-1 |
| Rated Current | Ir | 630 / 1250 / 1600 / 2000 / 2500 / 3150 | A | Main busbar |
| Rated Short-time Withstand Current | Ik | 20 / 25 / 31.5 / 40 | kA | 4s duration |
| Peak Withstand Current | Ip | 50 / 63 / 80 / 100 | kA | Peak value |
| Rated Short-Circuit Breaking Current | Isc | 20 / 25 / 31.5 / 40 | kA | Vacuum circuit breaker |
| Power Frequency Withstand Voltage | Ud | 42 / 65 | kV | 1 minute |
| Lightning Impulse Withstand Voltage | Up | 75 / 125 / 145 | kV | 1.2/50μs |
| Insulation Medium | - | Vacuum / Air | - | Circuit breaker |
| Protection Degree | IP Code | IP4X (standard) / IP54 (optional) | - | Metal-clad enclosure |
| Operating Mechanism | - | Spring-operated / Motorized | - | Handcart type |
| Mechanical Endurance | M | 10,000 (breaker) / 2,000 (handcart) | Operations | IEC 62271-100 |
| Internal Arc Classification | IAC | AFLR 31.5kA / 1s | - | Optional |
| Form of Separation | - | Fully compartmentalized (4 compartments) | - | Metal-clad design |
| Ambient Temperature | - | -25°C to +40°C | °C | Indoor installation |
| Installation Type | - | Indoor floor standing | - | Removable handcart |
| Smart Monitoring | - | IEC 61850, Temp/Humidity, Partial Discharge | - | Optional |
Customization Optional
Armored Removable AC Switchgear
The Armored Removable AC Switchgear can be extensively customized according to project voltage ratings, operational requirements, environmental conditions, and utility network architectures. Customers may select different vacuum circuit breaker capacities, protection relay systems, busbar configurations, and cable connection layouts depending on distribution network requirements and operational flexibility. The switchgear can additionally integrate load break switches, current transformers, voltage transformers, metering systems, capacitor compensation units, harmonic suppression devices, and intelligent automation modules for advanced electrical management applications. Optional withdrawable breaker structures, motorized operating mechanisms, and intelligent fault diagnosis systems further improve maintenance efficiency and operational reliability for critical industrial and utility applications.
The enclosure and internal compartment structure can also be optimized for industrial manufacturing plants, utility substations, mining operations, renewable energy facilities, transportation infrastructure, and petrochemical environments. Optional features include internal arc fault protection systems, anti-condensation heaters, thermal monitoring sensors, intelligent ventilation systems, fire-resistant partition structures, and remote communication interfaces for smart-grid integration. Customers may further customize cabinet dimensions, busbar arrangements, enclosure colors, branding labels, cable routing directions, and maintenance access configurations to simplify installation and improve operational flexibility. These advanced customization capabilities ensure the armored removable AC switchgear can fully adapt to modern industrial automation systems, utility power distribution networks, and digital substation applications.
Packing and Shipping
Armored Removable AC Switchgear
The Armored Removable AC Switchgear is packaged using industrial heavy-duty export protection methods to ensure safe transportation, reliable storage, and secure international shipment under demanding logistics conditions. Prior to packaging, the complete switchgear assembly undergoes structural inspection, enclosure sealing verification, coating quality assessment, and electrical component protection procedures to minimize transportation risks and environmental exposure. Sensitive devices including protection relays, intelligent communication modules, metering equipment, and monitoring systems are additionally protected using moisture-proof and vibration-resistant industrial packaging materials.
Each switchgear cabinet is internally reinforced using transportation locking systems and heavy-duty support structures to prevent movement during road, railway, or sea transportation. Withdrawable circuit breaker units are securely fixed and mechanically protected to avoid vibration damage during shipment operations. Busbar systems, cable compartments, auxiliary control devices, and internal electrical assemblies are additionally reinforced to maintain assembly integrity and reduce transportation impact risks. External cabinet surfaces are protected using industrial waterproof wrapping film, anti-scratch covers, reinforced edge guards, and impact-resistant fastening systems to preserve enclosure quality throughout long-distance transportation.
Depending on project dimensions, transportation conditions, and customer logistics requirements, the armored removable AC switchgear may be shipped using steel-frame export packaging, skid-mounted transportation systems, fumigation-free wooden crates, or direct container securing structures compliant with international logistics standards. Additional anti-condensation protection systems, anti-vibration reinforcement measures, and marine-grade corrosion protection solutions are available for offshore projects, mining operations, coastal installations, and remote infrastructure locations requiring extended transportation durations.
Shipping documentation generally includes factory inspection certificates, operation manuals, electrical schematics, wiring diagrams, packing lists, quality inspection reports, and export compliance certifications. Customers may additionally request multilingual labels, customized shipping marks, installation guidance manuals, and project-specific logistics coordination support. The complete packing and shipping process is designed to maintain equipment reliability, reduce transportation risks, and ensure safe delivery to the final installation destination.
Each switchgear cabinet is internally reinforced using transportation locking systems and heavy-duty support structures to prevent movement during road, railway, or sea transportation. Withdrawable circuit breaker units are securely fixed and mechanically protected to avoid vibration damage during shipment operations. Busbar systems, cable compartments, auxiliary control devices, and internal electrical assemblies are additionally reinforced to maintain assembly integrity and reduce transportation impact risks. External cabinet surfaces are protected using industrial waterproof wrapping film, anti-scratch covers, reinforced edge guards, and impact-resistant fastening systems to preserve enclosure quality throughout long-distance transportation.
Depending on project dimensions, transportation conditions, and customer logistics requirements, the armored removable AC switchgear may be shipped using steel-frame export packaging, skid-mounted transportation systems, fumigation-free wooden crates, or direct container securing structures compliant with international logistics standards. Additional anti-condensation protection systems, anti-vibration reinforcement measures, and marine-grade corrosion protection solutions are available for offshore projects, mining operations, coastal installations, and remote infrastructure locations requiring extended transportation durations.
Shipping documentation generally includes factory inspection certificates, operation manuals, electrical schematics, wiring diagrams, packing lists, quality inspection reports, and export compliance certifications. Customers may additionally request multilingual labels, customized shipping marks, installation guidance manuals, and project-specific logistics coordination support. The complete packing and shipping process is designed to maintain equipment reliability, reduce transportation risks, and ensure safe delivery to the final installation destination.
32
32 years of industry experience
Manufacturer Test
Armored Removable AC Switchgear
Progress Test
The manufacturing progress testing procedure for the Armored Removable AC Switchgear is implemented throughout all major production stages to ensure assembly precision, operational safety, and electrical reliability. Initial inspections focus on raw material verification including enclosure steel thickness measurement, insulation material testing, busbar conductivity analysis, and surface coating inspection to confirm compliance with engineering specifications and international manufacturing standards. During cabinet fabrication and component installation, engineers inspect welding quality, compartment alignment, grounding continuity, busbar positioning, cable routing structures, and enclosure sealing integrity. The installation of vacuum circuit breakers, withdrawable mechanisms, protection relays, metering devices, and intelligent monitoring modules is carefully monitored to ensure proper electrical clearances and maintenance accessibility. Internal wiring systems are additionally verified according to approved technical drawings to reduce installation errors and improve commissioning efficiency.
Design Tests
All transformers will be tested after finishing the production, test items as follows:
♦ Insulation Power Factor
♦ Ratio, Polarity, and Phase Relation
♦ Winding Resistance
♦ Impulse Tests
♦ On load Loss Test
♦ No Load Loss Test
♦ Transformer Turns Ratio/TTR (All Tap Voltages)
♦ Impedance Voltage & Load Loss (Rated Voltage)
♦ Polarity, 1-Ph / Phase Relation, 3-Ph (Rated Voltage)
♦ Excitation & No-Load Loss (Rated Voltage)
♦ Applied Voltage
♦ Induced Voltage
♦ Lightning Impulse
♦ Insulation Resistance (Rated Voltage)
♦ Temperature Rise
♦ Dielectric Withstand (Hipot)
Factory Acceptance Test
The transformer Factory Acceptance Test program for transformer-integrated Armored Removable AC Switchgear systems is designed to guarantee manufacturing quality consistency and dependable field operation in industrial and utility power distribution applications. The testing procedure begins with visual inspections and dimensional verification of transformer tanks, bushings, grounding terminals, cooling systems, enclosure coating quality, and accessory installation to confirm conformity with approved engineering drawings. Protective devices and auxiliary systems including pressure relief valves, oil level indicators, thermal protection devices, cooling fans, alarm systems, and intelligent communication interfaces are functionally tested to verify reliable operation during abnormal electrical conditions. SCADA integration modules and remote monitoring systems are also tested for projects requiring advanced energy management and smart-grid connectivity.
Routine Test - Partial Discharge Measurement
Purpose of Testing
Evaluate the integrity of the main circuit insulation and contact connections. Identify potential defects such as moisture ingress, aging, or contamination in the insulation system, and verify that contact resistance is within acceptable limits to prevent overheating.
Testing Equipment
For Insulation Resistance: Megohmmeter (typically 2500V or 5000V DC).For Circuit Resistance: Micro-ohmmeter (DC resistance tester) or Precision DC current source.Auxiliary Tools: Thermometer/hygrometer (for temperature correction).
Pre-Test Preparation
Ensure the switchgear is de-energized, isolated, and properly grounded. Clean the test terminals and bushings to remove dust or moisture. For insulation tests, discharge all capacitive loads (cables, busbars) thoroughly through the grounding switch or shorting links.
Test Progress
1. Insulation Test: Connect the megger leads to the busbar phases and ground. Apply the test voltage (e.g., 2500V DC) and hold for 1 minute.2. Circuit Resistance Test: Connect the micro-ohmmeter current leads to the main busbar or circuit breaker terminals. Pass a low DC current (e.g., 100A) and record the voltage drop.
Temperature Correction
Correct the measured insulation resistance to a standard reference temperature (typically 20°C) using the appropriate exponential formula to ensure compliance with standards across different ambient conditions.
Circuit Resistance Test
Connect the tester leads to the main busbar or circuit breaker terminals. Pass a low DC current (e.g., 100A or 200A as per standard) and accurately record the voltage drop across the connection point. Ensure the equipment is energized only if it complies with specific hot-line testing safety protocols, otherwise perform cold-resistance measurement after de-energization
Mechanical Characteristic Test
Purpose: To verify the operational performance and timing of the circuit breaker mechanism, ensuring compliance with speed and travel requirements for arc extinction.Procedure: Use a dedicated Circuit Breaker Mechanical Tester. Connect the tester to the control circuit (closing/opening coils) and the secondary side of the travel transducer. Perform several opening and closing operations without load. Record key parameters: Opening/Closing time, Synchronization between three phases, Travel distance, Overshoot, and Contact pressure.
Power Frequency Withstand Test (AC Hipot)
Purpose: To validate the integrity of the main insulation system under high voltage stress.Equipment: AC high voltage test set.Procedure: Energize the equipment and apply the specified power frequency test voltage (e.g., 42kV for 1 minute for 10kV switchgear) between phases/inter-phase and ground. Monitor the leakage current. The test is considered passed if the insulation does not break down and the current remains stable within the standard limit. (Note: This is a destructive test; perform only on de-energized and properly discharged equipment).
Partial Discharge (PD) Measurement
Purpose: To identify internal insulation defects such as voids, cracks, or contamination that are not detectable by insulation resistance tests.Procedure: Inject the test voltage up to 1.3~1.5 times the rated voltage. Use a PD detector connected to the coupling capacitor or directly to the test object to measure the apparent charge (pC). Ensure the background noise level is below the detection threshold. Analyze the PD patterns to locate the faulty chamber.
*These comprehensive tests ensure that each transformer meets performance standards and operates
reliably under various conditions.
Application
Armored removable AC switchgear is widely applied in urban power distribution substations, large manufacturing plants, mining operations, and petrochemical facilities. It is also commonly used in high-rise building substations and regional grid expansion projects requiring flexible maintenance.
Technical Advantages
● 30+ years of manufacturing experience
● ISO and UL certified production
● Customized cable and transformer solutions
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What is a Transformer?A transformer is an electrical device used to change the voltage of alternating current (AC). It works on the principle of electromagnetic induction, converting high-voltage current into low-voltage current or low-voltage current into high-voltage current. Transformers are widely used in power transmission, distribution systems, and various electronic devices.
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Do you have UL listed?Yes, our transformer has UL listed. We have exported to America many pad mounted transformer,substation transformer and HV.
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