Outdoor High-Voltage Isolating Vacuum Load Switch 12kV 35kV
Key attributes
| Brand | ROCKWILL |
| Model NO. | Outdoor High-Voltage Isolating Vacuum Load Switch 12kV 35kV |
| Rated voltage | 35kV |
| Rated normal current | 1250A |
| Rated frequency | 50/60Hz |
| Series | FZW32 |
Product descriptions from the supplier
Description
Product Overview
The FZW32-12/T630-20 Outdoor High-Voltage Isolating Vacuum Load Switch is a next-generation high-voltage electrical device, jointly developed and manufactured by our company and the Xi'an High Voltage Apparatus Research Institute. It has passed rigorous type tests and long-term field trials, with all technical performance indicators meeting GB 3804 and IEC standards.
This switch is designed for 12kV, 630A, three-phase AC 50Hz power distribution networks, integrating load switching, isolation, and overcurrent protection in a single rugged unit. It is ideal for outdoor applications where reliable isolation and frequent load switching are required.
Core Features
- Joint R&D Quality: Co-developed with Xi'an High Voltage Apparatus Research Institute, ensuring advanced design and reliable performance.
- Integrated Functionality: Combines load switching, visible isolation, and overcurrent protection in one compact device, simplifying system design.
- Vacuum Switching Technology: Uses vacuum interrupters for arc extinction, ensuring long electrical life and minimal maintenance.
- Wide Environmental Adaptability: Operates reliably in temperatures from -15°C to +40°C, and withstands wind speeds up to 35m/s.
- Visible Isolation: Provides clear mechanical indication of the isolation state, ensuring maintenance personnel safety.
- Compliant with Global Standards: Fully compliant with GB 3804 and IEC standards, ensuring global acceptance and reliability.
Technical Parameters
|
Serial Number
|
Item
|
Unit
|
Parameter 1
|
Parameter 2
|
|
|---|---|---|---|---|---|
|
1
|
Rated Voltage
|
KV
|
12
|
35
|
|
|
2
|
Rated Frequency
|
Hz
|
50
|
50
|
|
|
3
|
Rated Current
|
A
|
630
|
1250
|
|
|
4
|
Rated Active Load Breaking Current
|
A
|
630
|
1250
|
|
|
5
|
Rated Closing Breaking Current
|
A
|
630
|
1250
|
|
|
6
|
5% Rated Active Load Breaking Current
|
A
|
31.5
|
62.5
|
|
|
7
|
Rated Cable Charging Breaking Current
|
A
|
10
|
35
|
|
|
8
|
Rated No - load Transformer Breaking Capacity
|
1600
|
1600
|
||
|
9
|
Rated Capacitor Bank Breaking Current
|
A
|
100
|
100
|
|
|
10
|
1 - min Power - frequency Withstand Voltage: Vacuum Interrupter, Phase - to - phase, Phase - to - ground/Isolating Interrupter
|
KV
|
42/48
|
68/95/110
|
|
|
11
|
Lightning Impulse Withstand Voltage: Phase - to - phase, Phase - to - ground/Isolating Interrupter
|
KV
|
75/85
|
185/215
|
|
|
12
|
Rated Short - time Withstand Current (Thermal Stability)
|
KA
|
20
|
25
|
|
|
13
|
Rated Short - circuit Duration
|
S
|
4
|
4
|
|
|
14
|
Rated Peak Withstand Current (Dynamic Stability)
|
KA
|
50
|
63
|
|
|
15
|
Rated Short - circuit Making Current
|
KA
|
50
|
63
|
|
|
16
|
Mechanical Life
|
Times
|
10000
|
10000
|
|
|
17
|
Allowable Wear Thickness of Vacuum Arc - extinguishing Contacts
|
mm
|
1
|
0.6
|
|
|
18
|
Manual Operating Torque
|
mm
|
≤200
|
≤200
|
|
| 19 |
Load Switch Vacuum Arc - extinguishing Chamber Assembly Adjustment
|
Contact Opening Distance
|
mm
|
5 ± 1
|
13 ± 1
|
|
Average Opening Speed
|
m/s
|
1.1 ± 0.2
|
1.4 ± 0.2
|
||
|
Three - phase Opening Non - simultaneity
|
ms
|
<5
|
≤5
|
||
|
Three - phase Closing Non - simultaneity
|
ms
|
<2
|
≤2
|
||
|
Distance between Live Parts and Ground
|
mm
|
>200
|
≥420
|
||
|
Auxiliary Circuit Resistance
|
μΩ
|
≥400
|
400>R<10
|
||
Environmental Requirements
- Temperature Range: -15°C to +40°C
- Altitude: ≤1000m
- Wind Speed: ≤35m/s
- Relative Humidity: Daily average ≤95%, Monthly average ≤90%
- Seismic Intensity: ≤8 degrees
- Installation Site: No fire, explosion, severe pollution, chemical corrosion, or severe vibration
Application Scenarios
- 12kV Outdoor Distribution Networks: Primary load switching and isolation for overhead lines and transformers.
- Rural Power Grids: Ideal for frequent load switching in remote areas with limited maintenance resources.
- Industrial & Commercial Power Distribution: Protection and control for medium-voltage lines in factories and business parks.
- Renewable Energy Integration: Switching and isolation for solar and wind power connection points.
- Temporary Power Installations: Reliable switching for construction sites and event power distribution.
1.Single pole side mounting
- Terminal block
- Clamp
- Mounting bracket (long bracket, short bracket)
- Load switch
- Utility pole
- Power outgoing line
- Power incoming line
2.Horizontal side mounting
- Switch mounting bracket assembly
- Connecting wire
- Load switch
- Operating rod
- PT motor operating mechanism power supply
- Porcelain pull rod insulator
- Y-shaped clamp
- Tension clamp
3.Pole top mounting
- Connecting wire
- Load switch
- Connecting wire
- Porcelain pull rod insulator
- Y-shaped clamp
- Tension clamp
- Switch mounting bracket
- Operating rod
