Bypass Electric SF6 Load break Switch 12kV 24kV

  • Bypass Electric SF6 Load break Switch 12kV 24kV
Key attributes
Brand ROCKWILL
Model NO. Bypass Electric SF6 Load break Switch 12kV 24kV
Rated voltage 24kV
Rated normal current 400A
Rated frequency 50/60Hz
Series LBS
Product descriptions from the supplier
Description

Product Overview
The Bypass Electric SF6 Load Switch is a high-performance, durable switching device engineered for medium-voltage power distribution systems, featuring low power loss, excellent heat dissipation, and strong overload capacity. It integrates advanced SF6 insulation and arc-extinguishing technology with a specialized bypass design, enabling safe and efficient load transfer and maintenance without power interruption.Designed for global industrial, commercial, and utility applications, this switch boasts superior corrosion resistance, stable mechanical performance, and flexible operation modes, fully complying with international IEC standards. It is an ideal solution for power distribution networks requiring reliable bypass switching, easy maintenance, and enhanced safety protection.

Core Advantages & Key Features

With a focus on durability, flexibility, and safety, the switch offers distinct competitive advantages that meet the demands of overseas purchasers:

  • Low Loss & High Efficiency: Optimized structural design ensures low power loss, excellent heat dissipation, and strong overload capacity, supporting long-term stable operation under heavy load conditions.
  • Permanent Corrosion Resistance: The switch cabinet is made of 304 stainless steel, achieving permanent corrosion resistance and adapting to harsh outdoor/indoor environments, extending service life significantly.
  • Stable Mechanical Performance: The main circuit operating mechanism adopts a simple toggle (inverted triangle) structure, which is not affected by high-frequency vibration, gravity, or external impact caused by earthquakes or strong winds. It features long mechanical life, stable performance, and good compatibility with backup protection devices.
  • Flexible Operation Modes: Supports manual, electric closing and opening operations; optional on-site remote control and long-distance remote control switching functions, ensuring convenient, fast, and safe operation.
  • Quick-Plug Bushings: Equipped with quick-plug bushings, compatible with optional European and American self-locking quick-connect plug-in interfaces, simplifying installation, disassembly, and maintenance.
  • Comprehensive CT/RVT Protection: Configured with CT/RVT protection device to prevent overcurrent and CT open circuit of current measurement devices, as well as overvoltage of voltage measurement devices, protecting the switch and associated equipment.
  •  Rich Monitoring Functions: Equipped with live display, counting display, and phase checking function, facilitating on-site operation, monitoring, and fault judgment.
  •  Optional Fault Protection (Customizable): Optional fault detection, alarm, and automatic fault cutoff functions, enabling timely fault identification, protection, and handling, reducing maintenance costs and downtime.
  • Bypass Function Advantage: Specialized bypass design allows for safe load transfer during equipment maintenance, ensuring uninterrupted power supply to critical loads, a key benefit for industrial and commercial applications.

Key Technical Specifications

1
Structure form
Co - box type
2
Arc - extinguishing medium / Insulating medium
SF₆ arc - extinguishing / SF₆
SF₆ arc - extinguishing / SF₆
3
Rated voltage (kV)
12
24
4
Rated current (A)
200 / 400 / 630
200 / 400 / 630
5
Temperature rise test current
1.1Ir
1.1Ir
6
Rated 1 - minute power - frequency withstand voltage (kV)
Relative to ground / Between phases
45
55
Between breaking points
65
79
7
Rated short - time withstand current and duration (kA/s)
20 / 4
20 / 4
8
Rated peak withstand current (kA)
50
50
9
Rated short - circuit making current (kA)
20
20
10
Rated short - circuit breaking current (kA)
50
50
11
Main - circuit resistance (μΩ)
≤130
≤130
12
Mechanical stability (times)
≥5000
≥5000
13
Phase spacing (mm)
132 ± 2mm
132 ± 2mm
14
Rated current breaking times (times)
≥400 times
≥400 times
15
Operating mode
Electric, with manual operation function
16
Operating voltage (V)
DC24
17
Different periods of opening and closing (ms)
≤3
18
Closing speed (m/s)
1.8 ± 0.4 (m/s)
19
Opening speed (m/s)
1.8 ± 0.4 (m/s)
20
Opening and closing time (ms)
≤1000
21
Breaking gap distance (mm)
≥40
22
SF₆ gas annual leakage rate
≤0.1%
23
Enclosure protection class
IP67
24
Service life of the switch
30 years
25
Transportation weight (kg)
95
Current sensor
Ratio
Phase current: 600A / 1A; 1000A / 1A
Accuracy class
Phase current: Protection 5P10 class, Measurement 0.5 class
Capacity
cT: ≥1VA
Voltage sensor
Ratio
A / B / C; R / S / T; 6 - phase voltage sensors: Phase voltage V / 0.4 - - 37V (ratio selectable)
Accuracy class
0.5 class

Application Scenarios

With its bypass function, durable corrosion-resistant design, and flexible operation, the Bypass Electric SF6 Load Switch is widely used in global medium-voltage power distribution systems, especially suitable for:

  • Industrial Power Distribution: Factories, mines, and industrial parks requiring bypass switching for maintenance without power interruption, as well as strong overload capacity.
  • Commercial & Public Facilities: Shopping malls, hospitals, data centers, and high-rise buildings, ensuring uninterrupted power supply to critical loads during switch maintenance.
  • Urban & Rural Power Grids: Bypass switching for 12kV/24kV feeder lines, facilitating line maintenance and fault handling without affecting user power supply.
  • Renewable Energy Projects: Solar and wind farm distribution systems, used as bypass switching devices to ensure stable operation during equipment maintenance.
  • Harsh Environment Applications: Coastal areas, chemical plants, and other environments with high corrosion, where 304 stainless steel cabinet ensures long-term reliable operation.
  • Smart Grid Integration: Optional remote control and fault detection functions support intelligent monitoring and control, adapting to smart grid automation needs.
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