chassis truck is primarily designed to support circuit breakers, transformers, and other components in withdrawable switchgear. It facilitates the pushing and extraction of the chassis. As an auxiliary operation, it connects components and busbars. When operated with the internal mechanism of the circuit breaker and the interlock mechanism of the mid-placed cabinet, it meets the interlock requirements of the “5 Preventions” stipulated in GB3906. The specific functions are as follows:
The circuit breaker can only be closed when the handcart is in the testing, isolating, or working position. When the handcart is in the locked state, this prevents misconnection and mismatched isolation contacts with the load.
If the handcart is in the working position or moves 110mm away from the testing/isolating position, the earthing switch fails to close, thus avoiding unintentional operation of the switch.
When the earthing switch is closed, the handcart cannot shift from the testing/isolating position to the working position, preventing the circuit breaker from closing inadvertently.
Once the chassis enters the cabinet and moves away from the testing/isolating position, the handcart cannot be drawn out of the cabinet.
DPC Chassis truck definition
Note: There are five types of lock plates available for selection. The standard specification is 8B.141.012. If you require any of the other four lock plates, please specify your choice when placing the order.
| Product Type | A | B | C | D | E | F | G |
| DPC-5-800 | 650 | 600 | 520 | 520 | 652 | 685 | 25 |
| DPC-5A-800 | |||||||
| DPC-5-1000 | 850 | 800 | 720 | 700 | 852 | 885 | 45 |
| DPC-5A-1000 |
The DPC-5A/5A chassis truck is an essential component in High Voltage KYN28A switchgear systems, engineered for VD4 breaker compatibility. Designed with integrated earthing contacts, this chassis truck ensures safe, smooth insertion and withdrawal of circuit breakers. Its precision construction guarantees reliability, operational efficiency, and long-term durability, making it an indispensable tool for industrial high voltage applications.
| Feature | Description |
|---|---|
| Rated Voltage | Up to 12kV–40.5kV, depending on switchgear configuration |
| Current Compatibility | Compatible with VD4 type breakers |
| Material | High-strength steel with corrosion-resistant coating |
| Safety | Integrated earthing contacts for enhanced safety during operation |
| Mobility | Precision rollers for smooth movement along guide rails |
| Durability | Long service life under industrial operating conditions |
| Maintenance | Low-maintenance design with easy access to moving components |
Precision Rollers: Ensure consistent movement and alignment during breaker insertion and withdrawal.
Earthing Contacts: Automatically connect the chassis to the ground, preventing accidental electrical hazards.
Heavy-Duty Construction: Resistant to mechanical stress and wear from repeated operation.
Compatibility: Fully compatible with KYN28A switchgear and VD4 breaker systems, ensuring standardized performance.
The DPC-5A/5A Chassis Truck is widely used in:
High Voltage Substations: Facilitates breaker operations in industrial and municipal power distribution networks.
Power Plants: Supports regular maintenance and switching operations in thermal, hydro, and renewable power stations.
industrial switchgear Systems: Ideal for large-scale manufacturing, mining, and heavy industry facilities.
Energy Distribution Centers: Ensures safe insertion and extraction of breakers during routine maintenance.
Preparation: Verify that the switchgear is de-energized and properly grounded.
Chassis Alignment: Position the DPC-5A/5A chassis truck along the designated guide rails in the switchgear compartment.
Securing Rollers: Ensure all rollers are engaged with the rails for smooth movement.
Earthing Contacts Check: Confirm that the earthing contacts are correctly positioned to provide grounding.
Breaker Mounting: Align the VD4 breaker with the chassis and slowly insert it along the guide rails.
Locking Mechanism: Secure the breaker using the mid-door interlock or locking mechanism as per switchgear design.
Operational Test: Gently operate the chassis truck to verify smooth movement and electrical safety before energizing the system.
Always De-energize Switchgear: Before inserting or withdrawing breakers, ensure the switchgear is completely de-energized.
Verify Earthing: Confirm that earthing contacts are properly engaged before operation.
Use Personal Protective Equipment (PPE): Operators must wear insulating gloves, helmets, and safety boots.
Avoid Overloading: Do not exceed the rated current or mechanical load specified for the chassis truck.
Routine Inspection: Regularly inspect rollers, rails, and earthing contacts for wear or damage.
Follow Lockout-Tagout Procedures: Ensure adherence to local electrical safety protocols during maintenance.
Enhanced Safety: Integrated earthing contacts prevent accidental electric shocks.
Improved Efficiency: Smooth movement reduces installation time and effort.
Reliability: High-strength materials and precise construction provide consistent long-term performance.
Standardization: Fully compatible with KYN28A switchgear and VD4 breaker systems, supporting industry-wide standard operations.
Maintenance-Friendly: Easy access to rollers and contacts simplifies routine maintenance and troubleshooting.
Lubrication: Periodically lubricate the roller assemblies to ensure smooth operation.
Inspection: Check for mechanical wear, corrosion, or misalignment on chassis components.
Earthing Contact Integrity: Verify that all earthing contacts maintain reliable electrical continuity.
Cleaning: Remove dust and debris from guide rails and rollers to prevent operational issues.
Replacement Parts: Use only certified replacement components from the manufacturer for any worn or damaged parts.
| Issue | Possible Cause | Recommended Action |
|---|---|---|
| Chassis not moving smoothly | Roller misalignment or debris | Clean rails and adjust rollers |
| Earthing contact not engaging | Mechanical obstruction | Inspect and realign contact assembly |
| Breaker misalignment | Incorrect chassis positioning | Re-align chassis and follow insertion guide |
| Unusual noise during operation | Worn bearings or rollers | Lubricate or replace affected parts |
| Electrical continuity failure | Damaged earthing connection | Repair or replace contact assembly |
Efficiency Improvement: Operators reported faster breaker replacement times using the DPC-5A/5A chassis truck.
Safety Assurance: Maintenance teams highlighted the effectiveness of integrated earthing contacts in preventing electrical hazards.
Durability: Long-term usage in industrial switchgear demonstrated minimal wear and reliable operation.
Ease of Installation: Customers appreciated the clear alignment guides and smooth roller movement.
| Specification | Value |
|---|---|
| Rated Voltage | Up to 40.5kV |
| Compatible Breaker | VD4 Type |
| Rated Current | 630A–3150A (depending on switchgear rating) |
| Material | High-strength steel with anti-corrosion coating |
| Weight | 250–350 kg |
| Dimensions | Customized per switchgear model |
| Operational Temperature | -25°C to 55°C |
| Insulation Class | Class E or higher |
| Earthing Contact Type | Spring-loaded copper alloy |
| Service Life | 20+ years under standard operation |
The DPC-5A/5A Chassis Truck for KYN28A high voltage switchgear is a critical component for safe, efficient, and reliable operation of VD4 breakers. With its integrated earthing contacts, precision rollers, and durable construction, it meets the highest industrial standards for high voltage switchgear applications. It ensures operational safety, simplifies maintenance, and improves the overall efficiency of electrical distribution systems.
Phone: +8613736779975
E-mail: sales@vcbbreaker.com
Address: 66 Punan Road, Yueqing Economic Development Zone, Zhejiang, China
Copyright © 2025 Yangmei Electric Group All rights reserved
This website uses cookies to ensure you get the best experience on our website.
Español
Portugues
Pусский
العربية
Türk dili
Indonesia
Tiếng Việt
қазақ
فارسی
українська
беларускі
Filipino
o'zbek
български
тоҷикӣ
kiswahili
Монгол
አማራ
Ilocano
Phone