24kV Motorized Earthing Switch With ASTA Certificate for MV Substations
Product Spotlights
As a specialized manufacturer of electrical equipment, Jinhua Dika Electrical Equipment Co., Ltd. is proud to introduce our 24kV Motorized Earthing Switch. Engineered for reliability and safety in medium voltage substations, this switch provides a secure and remote-controlled method for grounding circuits, a critical function for maintenance personnel safety and system integrity. With our commitment to quality, evidenced by our ISO 9001 certified manufacturing processes, we deliver a product designed to meet the rigorous demands of global power distribution networks.
Our 24kV Motorized Earthing Switch stands out due to its robust construction and advanced operational features. It is a vital component for ensuring a de-energized and safe working environment during maintenance operations on MV switchgear.
Key Features & Technical Advantages:
- Remote Motorized Operation: Enables safe switching from a control room or remote location, eliminating the need for manual, on-site operation near live parts.
- Enhanced Safety: Provides a visible earth connection, ensuring the circuit is securely grounded before maintenance work begins.
- High Reliability: Built with durable materials and a precise mechanical drive system for consistent performance over thousands of operations.
- ASTA Certification Support: The product is designed and tested to meet the standards required for ASTA certification, a recognized mark of independent verification for short-circuit performance.
- Flexible Integration: Compatible with various types of MV switchgear panels and cubicles, offering design flexibility for substation engineers.
- Clear Status Indication: Equipped with auxiliary contacts for remote signaling of "Open" or "Closed" positions, integrating seamlessly into SCADA systems.
Technical Specifications:
| Parameter | Specification |
| Rated Voltage | 24 kV |
| Rated Frequency | 50/60 Hz |
| Rated Short-Time Withstand Current (3s) | 25 kA / 31.5 kA (Customizable) |
| Rated Peak Withstand Current | 63 kA / 80 kA (Customizable) |
| Control Voltage | DC 110V / 220V or AC 220V (Options Available) |
| Mechanical Life | ≥ 2000 operations |
| Insulation Medium | Air |
| Operating Time | Approx. 5-8 seconds |
| Standards | IEC 62271-102, ANSI/IEEE C37.20.2 |
Benefits for Your Operation:
- Operational Safety: Protects maintenance crews by ensuring circuits are safely earthed, reducing the risk of electrical accidents.
- Reduced Downtime: Faster, remote operation allows for quicker isolation and grounding procedures, speeding up maintenance cycles.
- System Compliance: Helps your substation meet international safety and operational standards for earthing practices.
- Long-Term Value: The robust design and high-quality components ensure a long service life with minimal maintenance requirements.
Trust in a manufacturer with a proven track record. Jinhua Dika Electrical Equipment Co., Ltd. supports an annual export value of US$1-1.5 Million, serving diverse markets across North America, South America, Europe, Asia, Africa, and Oceania. Our products are shipped from major Chinese ports like Shanghai, Tianjin, Guangzhou, and Ningbo, ensuring reliable logistics. Backed by a comprehensive ISO 9001 quality management system and a dedicated team of 11-50 professionals, we are committed to delivering electrical solutions you can depend on. Choose our 24kV Motorized Earthing Switch to enhance the safety, efficiency, and reliability of your medium voltage substation infrastructure. Contact us today for detailed specifications, pricing, or to discuss your project requirements.
Frequently Asked Questions (FAQ):
-
Q: What is the primary purpose of this motorized earthing switch?
A: Its primary purpose is to safely connect a medium voltage circuit to earth (ground) remotely. This is a mandatory safety procedure before personnel can work on the de-energized equipment, preventing accidental re-energization. -
Q: Can this switch be integrated into an existing substation control system?
A: Yes, it is designed for seamless integration. It provides auxiliary contacts for remote position indication (open/closed) and can be wired into your existing SCADA, PLC, or local control panels for centralized operation. -
Q: What does "ASTA Certificate available" mean?
A: It means the switch has been designed and can be supplied with supporting test reports or certification from an ASTA (Association of Short-circuit Testing Authorities) accredited laboratory. This provides independent verification of its short-circuit withstand capabilities, which is often a procurement requirement. -
Q: What are the typical control voltage options?
A: Common options include DC 110V, DC 220V, and AC 220V. The specific voltage can be customized to match your substation's auxiliary power supply during the ordering process. -
Q: Is manual operation possible in case of a motor or control power failure?
A: Many models include a manual operating mechanism (e.g., a crank handle) as a backup. Please confirm this feature when requesting a quotation, as it is a valuable safety redundancy. -
Q: What is the expected mechanical life of the switch?
A: The switch is engineered for a mechanical life of 2000 operations or more under normal service conditions. The exact figure can be confirmed based on the specific model and application. -
Q: Do you provide installation guidance or documentation?
A: Yes, comprehensive installation, operation, and maintenance manuals are provided with the product. These documents include wiring diagrams, dimensional drawings, and safety instructions. -
Q: Can you customize the switch for a specific short-circuit current rating?
A: Absolutely. While standard ratings like 25kA or 31.5kA are common, we can engineer the switch to meet higher or specific short-circuit current requirements for your project. This is part of our customization service.
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