Product Overview
The UMAS 000068308H6045 is a three-position manual disconnector switch engineered for safe isolation and maintenance of electrical equipment in medium-voltage switchgear assemblies, such as Ring Main Units (RMUs) and fixed-type MV switchgear. It provides a visible break and grounding capability, ensuring compliance with safety standards and facilitating maintenance procedures.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 000068308H6045 |
| Manufacturer | UMAS (Universal Manufacturing and Supply) |
| Product Type | High-Voltage Disconnector Switch |
| Rated Voltage | 12 kV |
| Rated Current | 630 A |
| Rated Frequency | 50/60 Hz |
| Operation Type | Manual, Three-Position (ON / OFF / Ground) |
| Visible Break | Yes |
| Mechanical Interlock | Yes |
| Insulation Medium | Air / Solid Insulation |
| Dielectric Strength | 42 kV (1-minute power frequency withstand) |
| Lightning Impulse Withstand | 75 kV (peak) |
| Short-Time Withstand Current | 20 kA (3 seconds) |
| Peak Withstand Current | 50 kA (typical) |
| Enclosure Protection | IP3X |
| Service Life | ≥ 2,000 mechanical operations |
| Compliance Standards | IEC 62271-102, GB/T 11022 |
Key Features
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Three-Position Operation: Enables clear ON, OFF, and Ground positions, enhancing operational safety.
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Visible Break: Provides a visible air gap when in the OFF position, confirming isolation.
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Mechanical Interlock: Prevents simultaneous operation of the ON and Ground positions, reducing the risk of incorrect operations.
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High Dielectric Strength: Withstands power frequency and lightning impulse voltages, ensuring reliability under transient conditions.
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Solid and Air Insulation: Utilizes a combination of solid and air insulation to achieve high dielectric strength and compact design.
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Durable Construction: Designed for a service life of over 2,000 mechanical operations, suitable for demanding industrial environments.
Typical Applications
The UMAS 000068308H6045 is ideal for:
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Medium-Voltage Switchgear: Used in RMUs and fixed-type MV switchgear for safe isolation during maintenance.
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Transformer Terminals: Provides isolation for transformer connections, facilitating safe maintenance.
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Cable Outgoing Circuits: Isolates outgoing cable circuits for maintenance or fault isolation.
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Busbar Segments: Isolates busbar sections during maintenance or fault conditions.
Installation and Maintenance
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Installation: Mount the disconnector switch in a fixed position within the switchgear assembly, ensuring proper alignment with busbars and cables.
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Operation: Operate the switch manually to achieve the desired position (ON, OFF, or Ground). Ensure the visible break is clear when in the OFF position.
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Maintenance: Regularly inspect the switch for signs of wear or damage. Ensure the mechanical interlock functions correctly and that the visible break is unobstructed.
Packaging and Warranty
The UMAS 000068308H6045 is typically supplied in original packaging, ensuring protection during transit. Warranty terms may vary; consult the manufacturer or authorized distributor for specific details.
