The DPC-3A-800 chassis truck is an essential component of KYN28A high voltage switchgear, designed to provide reliable operation, precise alignment, and safety compliance. Engineered for Vd4 match specifications, it features a mid door interlock and integrated earthing contacts. This component is suitable for industrial power distribution, substations, and High Voltage applications.

Key Features:

• Vd4 compliant chassis truck design

• Mid door interlock system for enhanced safety

• Compatible with KYN28A high voltage switchgear

• Durable construction for long-term operation

• Reliable earthing contact integration

Product Overview

The chassis truck ensures smooth insertion and withdrawal of switchgear units while maintaining full safety interlocks.

Detection and Testing Standards

1. Visual Inspection

Before installation, verify:

• No physical damage on the chassis frame

• Interlock mechanism operates freely

• Earthing contacts are intact and properly aligned

2. Mechanical Testing

• Ensure smooth sliding of the chassis on rails

• Mid door interlock functions correctly at full travel

• Load testing for rated current capability

3. Electrical Verification

• Insulation resistance tests according to IEC 62271

• Continuity of earthing contacts verified with multimeter

• Contact resistance measurement under rated conditions

4. Safety Compliance

All testing must adhere to international and national standards:

• IEC 62271 for high voltage switchgear

• GB 3906 for AC metal-enclosed switchgear

• Vd4 interlock standard for operational safety

Installation Guidelines

Step-by-Step Installation

1. Preparation

• Ensure the installation area is clean and free from debris

• Verify dimensions of the switchgear compartment

2. Chassis Placement

• Mount the DPC-3A-800 Chassis Truck onto guide rails

• Ensure proper alignment with rail supports

3. Mid Door Interlock Installation

• Attach the interlock assembly to the chassis frame

• Check for free movement and secure locking

4. Earthing Contacts Connection

• Connect the earthing conductor to the designated terminal

• Test continuity to ensure proper earthing

5. Final Verification

• Insert switchgear units fully to verify smooth movement

• Test interlock operation with chassis fully engaged and withdrawn

Installation Diagram:
(Illustrative schematic showing chassis rails, interlock system, and earthing connections)

Operational Guidelines

1. Insertion and Withdrawal

• Use slow, controlled motion when inserting switchgear units

• Ensure mid door interlock engages correctly before energizing

2. Safety Measures

• Always verify earthing connection before operation

• Do not bypass interlock mechanisms under any circumstances

• Wear appropriate PPE when handling high voltage equipment

3. Handling Tips

• Avoid excessive force on chassis rails

• Lubricate sliding surfaces periodically with approved compounds

• Inspect interlock pins for wear or deformation

Maintenance and Safety Procedures

Maintenance Frequency

Recommended Tools

• Insulation resistance tester

• Multimeter for continuity

• Torque wrench for fasteners

• Lubricant suitable for high voltage equipment

Troubleshooting Common Issues

1. Chassis Stuck on Rails

• Inspect for debris or misalignment

• Lubricate rails and retest

2. Interlock Failure

• Check for pin deformation

• Ensure correct assembly of the mid door interlock

3. Earthing Contact Discontinuity

• Inspect contact surfaces

• Clean oxidation or corrosion, retest continuity

Product Advantages

• Enhanced Safety: Mid door interlock prevents accidental energizing

• Smooth Operation: Low-friction chassis rails for seamless insertion

• Durability: Corrosion-resistant materials ensure long-term reliability

• Compatibility: Designed specifically for KYN28A high voltage switchgear

• Compliance: Meets IEC 62271, GB 3906, and Vd4 interlock standards

Technical Support and Warranty

• Technical Assistance: Factory-trained engineers provide installation guidance

• Documentation: Complete manuals, schematics, and testing reports included

• Warranty: Standard 12-month warranty covering manufacturing defects

• After-Sales Service: Field support for troubleshooting, maintenance, and replacement parts

The DPC-3A-800 Chassis Truck with Vd4 match and mid door interlock is an essential high voltage switchgear component that prioritizes safety, durability, and operational reliability. Ideal for industrial substations and power distribution networks, it ensures secure, compliant, and efficient switchgear management.