GB/T 24810 Crane Electrical Control Equipment Standard for LXD/DXT Cranes
GB/T 24810 "Electrical Control Equipment for Cranes" is a key technical specification in the crane industry. Developed by the national standardization authority, it defines the requirements for electrical control systems used in lifting appliances.
The standard provides a unified technical basis for design engineers, inspection bodies, and end users. Kelude Heavy Industry strictly follows its requirements throughout product development and manufacturing to ensure compliance and operational reliability.
Scope and Positioning of the Standard
GB/T 24810 "Electrical Control Equipment for Cranes" specifies the technical requirements and safety indicators for crane electrical control systems, covering all types of lifting appliances with a Rated Lifting Capacity above 0.5t. The standard applies not only to the design and manufacturing of new equipment but also provides clear technical guidance for the inspection, maintenance, and modification of cranes already in service. As a critical component of the crane standard system, it aligns with the EN 13001 Crane Safety Standard series and ISO 4309 Wire Rope Inspection Standard, forming a comprehensive framework of technical specifications. The defined technical parameters and Safety factor requirements give designers a clear design basis while offering third-party inspection bodies quantifiable acceptance criteria for Type Test and Factory Acceptance Test procedures.
Core Technical Parameter Framework
Under GB/T 24810, the design and manufacturing of crane electrical control systems must satisfy a stringent set of core technical parameters. These values are established through extensive test data and safety engineering principles, covering the full spectrum from material selection to structural design. The Safety factor ranges specified in the standard account for fatigue life and limit load conditions under demanding operating environments.
Key Technical Parameter Comparison
| Item | technical requirements | Description |
|---|---|---|
| Control Voltage | Handheld≤AC48V/DC24VSafety Voltage | control box AC220VIsolation Transformer |
| Emergency Stop Button | Red Mushroom Head≥25mm+Yellow Background | Response≤0.2sLatching Type |
| Protection Rating (IP) | Control Cabinet IP54(Indoor)/IP56(Outdoor) | pushbutton station IP65 |
| Insulation Resistance | ≥1MΩ(500VMegohmmeter (Insulation Tester)) | Withstand Voltage AC2500V/1min |
| safety level | SIL2(Safety-Related Functions) | Hard Wiring Safety Relay |
| EMC | Immunity EN 61000-6-2/Emission6-4 | Frequency Inverter / VFDWith EMCFilter |
Inspection Requirements and Intervals
Factory Acceptance Tests are performed on every unit at the manufacturer's facility by the quality inspection department. Each unit that passes inspection is accompanied by a detailed inspection report and a Certificate of Conformity. Type Tests are conducted when a new product enters production, when manufacturing is transferred to a different facility, or when significant structural changes are made. For equipment already in service, the periodic inspection interval is determined by the work duty classification and operating environment, typically not exceeding 12 months.
| Item | technical requirements | Description |
|---|---|---|
| Functional Check | Push Button/Indicator light/Display | Before Daily Use+Abnormal Shutdown |
| Emergency Stop Testing | Press to Confirmmain contactor Disconnect | Weekly+≤0.2s |
| Insulation Resistance | 500VMegohmmeter (Insulation Tester) | Quarterly+≥1MΩ |
| Contact Wear | Contactor Main Contact Thickness | Semi-Annually+<70%Replacement |
Safe Operation & Management Requirements
The standard places strong emphasis on operator qualification and training, requiring all operators to complete specialized instruction and obtain the necessary certifications before assuming their duties. User units should establish a comprehensive equipment file management system that thoroughly documents the entire process of installation, usage, maintenance, and inspection. Any safety hazards identified must be addressed through the rectification procedures specified in the standard, ensuring that equipment remains in a safe and controlled condition at all times.
FAQ: Electrical Control Compliance & Testing
Q: What are the control voltage requirements under GB/T 24810?
A: Handheld pushbutton devices must operate at safety voltages of ≤AC48V/DC24V. Control boxes with AC220V require an isolation transformer.
Q: What are the specifications for emergency stop buttons on electrical control equipment per GB/T 24810?
A: Red mushroom-head design with a minimum diameter of 25mm on a yellow background. Response time must not exceed 0.2s. Push-to-lock with twist-to-release operation. Double-break normally closed contacts are required.
Q: What Protection Rating (IP) requirements does GB/T 24810 specify for control cabinets and pushbutton stations?
A: Control cabinets require IP54 for indoor installation and IP56 for outdoor use. Pushbutton stations must meet IP65 (handheld type).
Q: What routine inspection items and intervals does GB/T 24810 require for electrical control equipment?
A: Daily functional checks. Weekly emergency stop testing. Quarterly insulation testing with a minimum resistance of 1MΩ. Semi-annual contact wear inspection.
Kelude Heavy Industry — Specialized in crane design and manufacturing, strictly adhering to the GB/T 24810 standard system, delivering comprehensive lifecycle service.
