ZGW1-1.5/3150 DC Disconnector (3150A)
ZGW1-1.5/3150 DC disconnector for 1500V DC metro traction power isolation, rated 3150A.
Specifications
| Model | ZGW1-1.5/3150 |
|---|---|
| Standard | IEC 61992-3 (DC disconnectors for railway fixed installations) and metro DC traction power supply technical conditions |
| Rated Voltage | 1.5kV DC |
| Rated Current | 3150A |
| Design Speed | N/A (fixed installation equipment) |
| Operating Temperature | -40°C to +70°C |
| Altitude | ≤ 4,000 m |
| Materials | Dedicated DC arc-extinguishing contact system; hot-dip galvanized steel structure; high-strength insulation |
| Installation | Mounted in traction substations or trackside boxes; motorized or manual operation |
The ZGW1-1.5/3150 is a 1.5kV DC, 3150A outdoor disconnector designed for electrical isolation in metro and urban rail DC traction power supply systems. It isolates sections of the 1500V DC overhead contact system for maintenance and operational switching.
The switch is designed with reference to IEC 61992-3 (Railway applications — Fixed installations — DC switchgear — Part 3: Disconnectors, switch-disconnectors and earthing switches) and relevant metro DC traction power supply technical specifications. A dedicated DC arc-extinguishing contact system ensures reliable breaking under DC load conditions; the hot-dip galvanized steel structure and high-strength insulation suit long-term outdoor service from -40°C to +70°C at altitudes up to 4,000 m.
Installation options include mounting inside traction substations or in trackside boxes, with motorized or manual operating mechanisms available to match the automation level of the line.
Henan Chuangwit Railway Equipment Co., Ltd. supplies the ZGW1 series with type test documentation and engineering support for metro projects worldwide.
Frequently Asked Questions
What is a DC disconnector used for in metro systems?
It isolates sections of the 1500V DC traction power network — for example at substations or between line sections — so maintenance can be performed safely without de-energizing the whole line.
Which standard does the ZGW1-1.5/3150 follow?
It is designed with reference to IEC 61992-3 for DC disconnectors, plus metro DC traction power supply technical conditions.
Motorized or manual operation?
Both are available. Motorized mechanisms support remote control and automation retrofits; manual mechanisms suit simpler installations.
Performance
Operating Conditions
Long-term outdoor service in metro DC traction power environments from -40°C to +70°C, altitudes to 4,000 m.
Mechanical Performance
Hot-dip galvanized steel frame with high-strength insulators; robust mechanism for frequent switching duty.
Electrical Performance
Dedicated DC arc-extinguishing contacts provide reliable breaking at 1500V DC / 3150A, designed per IEC 61992-3.
Applications
Metro Substations
DC isolation inside traction substations.
Trackside Boxes
Section isolation along the line in compact enclosures.
Outdoor Service
Galvanized structure for open-air installations.
Cold Regions
Operation down to -40°C.
