36KV SF6 Load Break Switch
| Brand | ROCKWILL |
| Model NO. | 36KV SF6 Load Break Switch |
| Rated voltage | 36kV |
| Series | RLS |
Product Overview
The RLS-36 is a 36kV/40.5kV SF6 gas-insulated load break switch designed for indoor medium-voltage applications. Utilizing SF6 gas for superior arc quenching and insulation, it features a three-position switching mechanism (ON-OFF-GROUND) in a compact, space-saving design. The RLS-36 and its fused combination variant provide reliable protection and control for power distribution networks, particularly in ring main units (RMUs), cable branch cabinets, and distribution substations.
Compliant with GB3804-1990, IEC60256-1:1997, GB16926, and IEC60420, this switchgear ensures safe and efficient operation in diverse electrical environments.
Key Features
SF6 Gas Insulation– Superior arc extinction and dielectric strength
Three-Position Switching– Make, break, and ground functions in one unit
Compact Design– Space-efficient for easy installation in confined spaces
Fused Combination Option– Enhanced protection for transformers and cables
High Adaptability– Reliable performance in harsh environments
Product Advantages
Enhanced Safety– SF6 gas prevents arc flashes and ensures stable operation
Low Maintenance– Sealed design reduces maintenance requirements
Flexible Configuration– Standard or fused versions available
Wide Compliance– Meets GB, IEC, and international standards
Robust Construction– Withstands high humidity (95%) and altitude (2500m)
Application Scenarios
Ring Main Units (RMUs)– Secure load switching in urban power grids
Cable Branch Cabinets– Reliable power distribution for industrial zones
Distribution Substations– Safe load control in medium-voltage networks
Transformer Protection– Fused version prevents fault escalation
Environmental Specifications
Operating Temperature: -5°C to +40°C
Humidity Tolerance: Daily avg. 90% / Monthly avg. 95%
Max. Altitude: 2500m
Technical data
Matching dimension of SF6 load break switch-fuse combination
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Analysis of Common Problems in 10kV Gas-Insulated Ring Main Units (RMUs)Introduction:10kV gas-insulated RMUs are widely used due to their numerous advantages, such as being fully enclosed, possessing high insulation performance, requiring no maintenance, having a compact size, and offering flexible and convenient installation. At this stage, they have gradually become a critical node in urban distribution network ring-main power supply and play a significant role in the power distribution system. Problems within gas-insulated RMUs can severely impact the entire di16/08-2025 -
SF6-Free Solution for Air-Insulated/Eco-friendly Gas Ring Main UnitsⅠ. Technical Bottlenecks of SF₆ SubstitutionInsulation Medium Performance Gapo Dried Air/N₂ insulation strength is only 1/3 of SF₆, requiring expansion of contact gap from 60mm to ≥150mm.o Conventional spring mechanisms lack energy to drive rapid closure of large gaps, easily causing contact ablation due to pre-strike.o Synthetic gases (e.g., C4+CO₂) decompose under arcing, leading to irreversible insulation degradation.Mechanical Structural Limitationso National Grid standardization fix16/08-2025 -
Implementation Scheme for Installing Lightning Arresters or Voltage Transformers in Gas-Insulated Ring Main UnitsAccording to insulation type, ring main units (RMUs) can be categorized as gas-insulated or air-insulated. The former installs primary circuit components in a sealed metal enclosure filled with low-pressure gas (primarily SF₆ or mixed gases) as the insulating medium, using cable terminals for incoming and outgoing lines. Due to superior insulation, compact size, and modular design, they are widely used in 10kV outdoor distribution substations and prefabricated transformer stations. However, thei16/08-2025 -
Pressure Relief Safety Solution for Gas-Insulated Ring Main UnitsⅠ. Problem ContextAs a core component in urban power distribution networks, ring main units (RMUs) are widely used in residential areas, factories, and public buildings due to their compact structure, low cost, and high reliability. However, internal equipment failures or arc faults may generate high-temperature, high-pressure gas, leading to cabinet explosions that endanger personnel and equipment. While traditional sealed designs maintain insulation integrity, they fail to rapidly release sud16/08-2025
