Outdoor High-Voltage Vacuum Load break Switch 12kV 34.5kV 35kV
Key attributes
| Brand | ROCKWILL |
| Model NO. | Outdoor High-Voltage Vacuum Load break Switch 12kV 34.5kV 35kV |
| Rated voltage | 35kV |
| Rated normal current | 1250A |
| Rated frequency | 50/60Hz |
| Series | FZW35 |
Product descriptions from the supplier
Description
Product Overview
The FZW-35/T630-20 Outdoor High-Voltage Isolating Vacuum Load Switch is a next-generation high-voltage electrical product jointly developed and exclusively manufactured for the first time by professional R&D and manufacturing teams in the high-voltage electrical field. Having passed rigorous type tests and long-term trial operation, all its technical performance indicators fully comply with GB 3804 and international IEC standards. Engineered for 12kV rated voltage, 630A rated current, three-phase AC 50Hz power supply networks, it integrates reliable load switching and visible isolation functions, serving as a core switching device for outdoor medium-voltage power distribution systems with stable and durable performance.
Core Features
- Joint R&D & Pioneer Manufacturing: Co-developed by professional high-voltage electrical research and manufacturing institutions, the first to mass-produce with professional technical backing and innovative design.
- Dual Standard Compliance: All performance indicators meet national GB 3804 and international IEC standards, ensuring global applicability and reliable quality.
- Integrated Core Functions: Combines outdoor high-voltage load switching and visible isolation in one unit, realizing safe circuit disconnection and load control.
- Proven Reliability: Passed strict type tests and long-term on-site trial operation, with stable performance under actual working conditions of power grids.
- Vacuum Switching Technology: Adopts advanced vacuum arc-extinguishing structure, featuring long electrical life, low maintenance and strong environmental adaptability.
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 Load-Breaking Current of Active Power
|
A
|
630
|
1250
|
|
|
5
|
Rated Closed-Loop Breaking Current
|
A
|
630
|
1250
|
|
|
6
|
5% Rated Load-Breaking Current of Active Power
|
A
|
31.5
|
62.5
|
|
|
7
|
Rated Cable Charging Breaking Current
|
A
|
10
|
35
|
|
|
8
|
Rated Breaking Capacity of No-Load Transformer
|
1600
|
1600
|
||
|
9
|
Rated Capacitor Bank Breaking Current
|
A
|
100
|
100
|
|
|
10
|
1min Power Frequency Withstand Voltage: Vacuum Interrupter, Phase-to-Phase, Relative Ground/Isolation Interrupter
|
KV
|
42/48
|
68/95/110
|
|
|
11
|
Lightning Impulse Withstand Voltage: Phase-to-Phase, Relative Ground/Isolation 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 Contact
|
mm
|
1
|
0.6
|
|
|
18
|
Manual Operating Torque
|
≤200
|
≤200
|
||
| 19 |
Adjustment of Load Switch Vacuum Arc-Extinguishing Chamber Assembly
|
Contact Opening Distance
|
mm
|
5 ± 1
|
13 ± 1
|
|
Average Opening Speed
|
m/s
|
1.1 ± 0.2
|
1.4 ± 0.2
|
||
|
Phase-Making Different Time
|
ms
|
<5
|
≤5
|
||
|
Phase-Closing Different Time
|
ms
|
<2
|
≤2
|
||
|
Distance Between Live Parts and Relative Ground
|
mm
|
>200
|
≥420
|
||
|
Auxiliary Circuit Resistance
|
μΩ
|
≥400
|
400 > R > 10
|
||
Application Scenarios
- 12kV Outdoor Medium-Voltage Power Distribution Networks: Core load switching and isolation device for overhead power lines and pole-mounted transformer connection systems.
- Industrial and Mining Enterprise Power Grids: Reliable switching equipment for medium-voltage power distribution systems in factories, mines and industrial parks with outdoor power distribution demands.
- Urban and Rural Power Grid Reconstruction: Ideal for the upgrading and transformation of urban and rural medium-voltage power grids, matching the basic switching needs of distribution networks.
- Substation Auxiliary Distribution: Used for the load switching and isolation of auxiliary power supply networks in 12kV grade substations.
- Commercial and Industrial Park Power Supply: Adapts to the outdoor medium-voltage power distribution and load control needs of commercial parks, industrial clusters and large residential areas.
Quality & Certification
- The product has undergone full-process strict quality control, from component procurement to finished product assembly and testing.
- Passed professional type tests including mechanical life, electrical performance and environmental adaptability, with complete test reports for support.
- All technical performance indicators meet the requirements of national standard GB 3804 and international IEC standards, with global market access compatibility.
- As a jointly developed product by professional high-voltage electrical research and manufacturing institutions, it has professional technical certification and technical patent support.
About Our R&D & Manufacturing
We are a professional high-voltage electrical equipment manufacturer with strong R&D capabilities. The FZW-35/T630-20 load switch combines academic research achievements with practical manufacturing experience of the high-voltage electrical industry. As the pioneer manufacturer of this product, we have mature production lines and a comprehensive quality control system, ensuring the consistency and stability of each product's performance, and providing reliable after-sales service and technical support for global customers.
