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China GW13-36 Isolating Switch Suppliers - 36kV Outdoor Disconnect Switch from Reliable Factory
📋 Product Overview
The GW13-36 Isolating Switch is a high-voltage outdoor disconnect switch purpose-built for 36kV overhead distribution networks. Operating as a manually actuated isolating device, it provides visible circuit separation for maintenance safety and network sectionalizing. With a rated current of 630A and peak withstand current of 50kA, the switch is engineered for robust fault-handling capability. Its defining feature is the 160-degree blade opening angle, offering superior visual verification of open-circuit status. Available with either porcelain or polymer insulators and built on a hot-dip galvanized steel base, the GW13-36 is ideal for utilities and industrial operators requiring rugged, standards-compliant isolation equipment for medium-voltage outdoor applications.
⚙️ Product Features
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High short-circuit withstand rating of 20kA for 3 seconds
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Peak withstand current capability of 50kA
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Dual insulator options: porcelain for traditional applications or polymer for lightweight durability
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Silver-plated copper blades and terminal pads for optimal conductivity
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Self-locking mechanism prevents unintended operation
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Hot-dip galvanized steel channel base with excellent outdoor corrosion resistance
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Compatible with optional loadbuster hooks for load-breaking capability
⭐ Product Advantages
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Superior Visual Verification: The 160-degree blade opening provides an unmistakable visual break, significantly enhancing operator safety during maintenance procedures.
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Heavy-Duty Fault Handling: With 20kA short-circuit withstand and 50kA peak withstand ratings, the switch remains stable and undamaged under severe fault conditions.
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Proven Insulation Performance: Lightning impulse withstand of 170kV and wet/dry power frequency withstand voltages ensure reliable insulation coordination in exposed outdoor installations.
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Material Excellence: Silver-plated copper current path minimizes contact resistance, reduces hot spots, and extends operational service life.
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Heavy Pollution Readiness: Designed for heavy pollution environments, making it suitable for coastal, industrial, and high-contamination zones.
📌 Applications
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Primary isolation for 36kV outdoor overhead distribution feeders
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Visible open-point isolation at utility network sectionalizing points
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Industrial plant power supply disconnection for maintenance safety
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Rural overhead network isolation points requiring durable, low-maintenance switches
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Integration into overhead systems requiring loadbuster-compatible isolation devices
📊 Technical Parameters
| Electrical Characteristics | |||
|---|---|---|---|
| Parameter | Specification (12kV) | Specification (36kV) | Unit |
| Rated voltage of Disconnector | 12 | 36 | kV |
| Rated current | 630 | A | |
| Rated frequency | 50 | Hz | |
| Lighting Impulse withstand voltage | 95 | 170 | kV |
| Power frequency withstand voltage in 1 min (Dry) | 42 | 70 | kV |
| Power frequency withstand voltage in 10 s (Wet) | 36 | 60 | kV |
| Rated short circuit withstand current | 20 | kA | |
| Rated short circuit withstand time | 3 | s | |
| Rated peak withstand current | 50 | kA | |
| Creepage | 25 | 20 | mm/kV |
| Blade stopped degree in opening position | 160 | Degree | |
| Spare Parts & Configurations | |
|---|---|
| Part Name | Availability |
| Mounting bracket | with / without |
| Terminal clamp | with / without |
| Loadbuster Hook | with / without |
| Self locking Mechanism | with |
| Material Specifications | |
|---|---|
| Component | Material |
| Terminal pads | Brass / Copper plated by silver |
| Blade | Copper plated by silver |
| Insulator | Porcelain / Polymer |
| Channel Base | Steel hot galvanized |
| Service Conditions | ||
|---|---|---|
| Condition | Value | Unit |
| Environment maximum temperature | 40 | ℃ |
| Pollution level | Heavy | |
| Altitude | ≤ 1000 | Meter |
❓ Frequently Asked Questions (FAQ)
What is the primary application of the GW13-36 Isolating Switch?
The GW13-36 is engineered for medium-voltage 36kV outdoor overhead distribution feeders, sectionalizing points, and industrial plant power supply isolation. It provides a clear and visible circuit break during maintenance and network reconfiguration.
Why is the 160-degree blade opening angle significant?
The 160-degree opening provides a wide, unmistakable visual gap between the contacts. This allows ground-level operators to easily and safely verify the open status of the circuit before performing maintenance.
What insulator types are available for the GW13-36?
The switch can be configured with either traditional porcelain insulators for standard durability or polymer (silicone rubber) insulators for lightweight construction and superior performance in high-pollution or coastal environments.
Can this disconnect switch break load currents?
The GW13-36 is designed primarily as a visible no-load disconnector. However, it can be equipped with optional loadbuster hooks to enable load-breaking operations using portable loadbreak tools.
What features prevent unintended opening or closing during operation?
The switch includes a robust built-in self-locking mechanism that secures the blade in position, preventing accidental opening or movement caused by line vibration, wind pressure, or short-circuit magnetic forces.
How does the switch withstand harsh outdoor conditions?
It is built with a hot-dip galvanized steel channel base for strong corrosion resistance, silver-plated copper contact surfaces to prevent oxidation and hot spots, and insulation suited for heavy pollution ratings.
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