Medium-voltage disconnect switch ZGW1

DChigh-currentdouble-column

Product Overview
The ZGW1 is an outdoor double‑column vertical‑opening DC disconnector designed for urban rail transit systems. Rated voltage: 1.5 kV. It provides reliable isolation and a mechanically robust base to withstand electromagnetic and short‑circuit stresses in outdoor traction power applications.

Key Features

• Copper profile conductors — Upper conductive circuit uses high‑conductivity copper profiles for excellent electrical conductivity, mechanical strength and corrosion resistance.
• Graphite silver‑plating technology — Contact fingers feature graphite silver‑plating at engagement zones for self‑cleaning and self‑lubricating properties, reducing maintenance and improving contact reliability.
• Main‑ground linkage — Interlocked grounding switch ensures safe and simple grounding operation.
• Monobloc base frame — Support base manufactured from bent steel plate to resist electromagnetic forces and mechanical loads from line terminal faults or short‑time currents.

Technical Specifications

• Rated voltage (kV): 1.5
• Rated current (A): Up to 4000
• Rated short‑time withstand current (kA): Up to 50
• Rated peak withstand current (kA): Up to 125
• Operating temperature (℃): -50 ~ +55
• Maximum ice coating (mm): Up to 20

Characteristics / Technical specifications

• Model: ZGW1
• Application: Outdoor double‑column vertical‑opening disconnector for urban rail transit systems
• Rated voltage: 1.5 kV
• Rated current: up to 4000 A
• Short‑time withstand current: up to 50 kA
• Peak withstand current: up to 125 kA
• Operating temperature range: -50 ℃ to +55 ℃
• Maximum ice coating tolerance: up to 20 mm
• Upper conductive circuit: high‑conductivity copper profiles
• Contact finish: graphite silver‑plating (self‑cleaning, self‑lubricating)
• Grounding: interlocked grounding switch
• Base: monobloc bent steel plate for electromagnetic and mechanical strength