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China Indoor Electrical Disconnect Switch 33kV Manufacturer, Supplier, Factory
Ensuring operational safety and system reliability in high-voltage environments is paramount. Our Indoor Electrical Disconnect Switch 33kV is engineered to meet these critical demands, providing a robust and secure solution for isolating circuits within indoor substations and power distribution systems. This switch is a fundamental component of comprehensive Indoor HV Safety Disconnect Switch configurations, designed to offer visible isolation points for maintenance and emergency procedures. As a reliable Indoor HV Isolation Switch, it guarantees a clear break in the circuit, protecting personnel and equipment from accidental energization. It seamlessly integrates into a wide array of Indoor High Voltage Switchgear Equipment assemblies, complementing circuit breakers and other protective devices. For applications requiring lower voltage ratings, we also provide specialized solutions like the Indoor Electrical Disconnect Switch 11kV.
The Indoor Electrical Disconnect Switch 33kV is meticulously designed for durability and performance in controlled indoor environments. Constructed with high-quality, corrosion-resistant materials, it ensures long-term reliability and minimal maintenance. Its compact design allows for efficient space utilization within switchgear panels, while the clear visual indicators provide immediate status confirmation. The operating mechanism is engineered for smooth, low-effort switching, contributing to safe and efficient operation by trained personnel. This switch is a testament to precision engineering, built to withstand the electrical and mechanical stresses inherent in 33kV systems.
Key Product Parameters
- Rated Voltage: 33kV
- Rated Frequency: 50Hz / 60Hz
- Rated Normal Current: 630A, 1250A, 2000A, 2500A, 3150A
- Rated Short-Time Withstand Current (3s): 25kA, 31.5kA, 40kA
- Rated Peak Withstand Current: 63kA, 80kA, 100kA
- Dielectric Strength (Power Frequency Withstand Voltage): 70kV
- Impulse Withstand Voltage: 170kV
- Mechanical Life: 10,000 operations
- Operating Ambient Temperature: -15°C to +40°C
- Protection Degree: IP2X (for indoor use)
| Model Variant | Rated Current (A) | Short-Time Current (kA/3s) | Contact Material | Mounting Type |
|---|---|---|---|---|
| IES33-630 | 630 | 25 | Copper Alloy | Fixed Panel |
| IES33-1250 | 1250 | 31.5 | Copper Alloy, Silver Plated | Fixed Panel |
| IES33-2000 | 2000 | 31.5 | Copper Alloy, Silver Plated | Fixed Panel / Withdrawable |
| IES33-2500 | 2500 | 40 | Copper Alloy, Silver Plated | Withdrawable |
| IES33-3150 | 3150 | 40 | Copper Alloy, Silver Plated | Withdrawable |
Design & Construction Features
- Enclosure: Robust sheet steel construction with anti-corrosion treatment.
- Isolation Gap: Provides a clearly visible air break for safe isolation.
- Arc Control: Designed to minimize and safely extinguish switching arcs.
- Operating Mechanism: Manual, motorized, or pneumatic operation options available. Equipped with safety interlocks.
- Earthing: Optional integrated earthing switch for secure grounding of isolated sections.
- Bushings: Porcelain or epoxy resin insulated bushings for superior dielectric performance.
- Standards Compliance: Designed and tested in accordance with IEC 62271-1, IEC 62271-102, and other relevant international standards.
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