40.5kV series SF6 gas-insulated switchgear
Key attributes
| Brand | ROCKWILL |
| Model NO. | 40.5kV series SF6 gas-insulated switchgear |
| Rated voltage | 40.5kV |
| Rated frequency | 50/60Hz |
| Series | NG7 |
Product descriptions from the supplier
Description
NG7-40.5 series SF6 gas-insulated switchgear is a new generation of miniaturized products designed and manufactured by Rockwill according to IEC 62271-200.It has a variety of combinations and can be flexibly extended, which not only meets the requirements of power distribution, but also meets the needs of various secondary distribution application for flexible compact switchgear. It is widely used in public power grids, rail transit, new energy E-house, solar farm, wind farm, data center and other new energy fields.
Product Advantages
- Complete mechanical interlock：The reliable interlock design ensures safety of operators.No any additional tools needed when opening the cableroom door.
- Easy to operate：4m is the most comfortable height for people, combined with reliable mechanical interlocking, which is convenient for the operator.
- Compact structure：The compact design makes the best use any of the space inside the cabinet, and the width of the 420/500 cabinet is the first-class in the industry.
- Flexible extension：The modular design realizes the building block installation of each component, and the field extension is convenient and flexible.
- Lifetime maintenance-free：The live actuated parts are fully sealed inside the gas tank and are not affected by the environment, maintenance-free during its life cycle.
- Adapt to harsh environments：The completely sealed insulating structure makes it extremely adaptable to environmental influences. It is suitable for various harsh environments such as high altitude, high pollution, high salt spray, etc.
Parameters
|
Item |
Unit |
Value |
||
|
Load switch unit (C) Circuit breaker unit (V |
Load switch unit (C) Circuit breaker unit (V |
|||
|
Rated voltage (IEC/GB) |
kV |
36 / 40.5 |
||
|
Rated frequency |
Hz |
50 (60) |
||
|
Rated normal current * |
A |
630(x1.1) |
630/1250(x1.1) |
|
|
Rated short-duration power frequency voltage (1min) |
To earth & between phases (IEC/GB) |
kV |
70 / 95 |
|
|
Across the isolating distance (IEC/GB) |
80 / 118 |
|||
|
Rated lightning impulse voltage |
To earth & between phases (IEC/GB) |
kV |
170 / 185 |
|
|
Across the isolating distance (IEC/GB) |
195 / 215 |
|||
|
Rated power frequency voltage of control and auxiliary circuits (1min) |
kV |
2 |
||
|
Rated short-time withstand current & duration ** |
kA |
25/4 (20/4) |
||
|
Rated peak withstand current ** |
kA/s |
63 (52) |
||
|
Rated short-circuit breaking current ** |
kA |
- |
25 (20) |
|
|
Rated short-circuit making current ** |
kA |
63 (52) |
||
|
Mechanical endurance |
Circuit breaker |
- |
- |
10000 |
|
Load switch / Disconnector |
5000 |
|||
|
Earthing switch |
3000 |
|||
|
Rated functional pressure for insulation and interruption (relative at 20°C) |
Mpa |
0.04 |
||
|
Minimum functional pressure for insulation and interruption (relative at 20°C) |
Mpa |
0.02 |
||
|
Gas leakage rate |
/year |
≤ 0.01% |
||
|
Degree of protection |
Gas tank |
- |
IP67 |
|
|
Gas tank |
- |
IP4X, IK10 |
||
|
Internal arc classification AFLR |
kA/s |
16/1, 20/1, 25/1 |
||
|
Altitude |
m |
≤ 5000 |
||
|
Dimension (Width x Depth x Height) *** |
mm |
420 x 1000 x 1650 500 / 550 x 1000 x 1650 |
420 x 1000 x 1650 500 / 550 x 1000 x 1650 |
|
Online store
On-time delivery rate
Response time
100.0%
≤4h
Company overview
Workplace: 108000m²m²
Total staff: 700+
Highest Annual Export(usD): 150000000
Services
Business Type: Design/Manufacture/Sales
Main Categories: High Voltage Electrical Apparatus/Electric transformer
Whole life care manager
Whole-life care management services for equipment procurement, use, maintenance, and after-sales, ensuring safe operation of electrical equipment, continuous control, and worry-free electricity consumption.
The equipment supplier has passed platform qualification certification and technical evaluation, ensuring compliance, professionalism, and reliability from the source.
Related Products
-
35kV Maintenance-Free N2 insulated switchgear ensuring Stable Power
-
24kV SF6 Insulated Ring Main Unit（RMU）
-
12kV 24kV 36kV Pure air/Nitrogen Insulated Ring Main Unit(RMU) Ensuring Stable Power
-
24kV Maintenance-Free zero gas switchgear
-
Maintenance-Free Environmental Protection no gas Ring Network Cabinet
-
Intelligent environmentally friendly gas insulated ring network cabinet
-
Maintenance-Free solid insulated switchgear Ensuring Stable Power
Related Knowledges
-
Adjustment and Precautions for H61 Oil Power 26kV Electric Transformer Tap ChangersPreparatory Work Before Adjusting the Tap Changer of H61 Oil Power 26kV Electric Transformer Apply for and issue a work permit; carefully fill out the operation ticket; conduct a simulation board operation test to ensure the operation is error-free; confirm the personnel who will carry out and supervise the operation; if load reduction is required, notify affected users in advance. Before construction, power must be disconnected to take the transformer out of service, and voltage testing must be12/08/2025 -
H59/H61 Transformer Failure Analysis and Protection Measures1.Causes of Damage to Agricultural H59/H61 Oil-Immersed Distribution Transformers1.1 Insulation DamageRural power supply commonly uses a 380/220V mixed system. Due to the high proportion of single-phase loads, H59/H61 oil-immersed distribution transformers often operate under significant three-phase load imbalance. In many cases, the degree of three-phase load imbalance far exceeds the limits permitted by operational regulations, causing premature aging, deterioration, and eventual failure of th12/08/2025 -
Top 5 Faults Found in H61 Distribution TransformersFive Common Defects of H61 Distribution Transformers1.Lead Wire DefectsInspection Method: The three-phase DC resistance imbalance rate significantly exceeds 4%, or one phase is essentially open-circuited.Remedial Measures: The core should be lifted for inspection to locate the defective area. For poor contacts, re-polish and tighten the connection. Poorly welded joints should be re-welded. If the welding surface area is insufficient, it should be enlarged. If the lead wire cross-section is inade12/08/2025 -
How Voltage Harmonics Affect H59 Distribution Transformer Heating？The Impact of Voltage Harmonics on Temperature Rise in H59 Distribution TransformersH59 distribution transformers are among the most critical equipment in power systems, primarily functioning to convert high-voltage electricity from the power grid into low-voltage electricity required by end users. However, power systems contain numerous nonlinear loads and sources, which introduce voltage harmonics that adversely affect the operation of H59 distribution transformers. This article will discuss i12/08/2025 -
What Is an H61 Distribution Transformer? Uses & SetupH61 distribution transformers refer to transformers used in power distribution systems. In a distribution system, high-voltage electricity must be converted into low-voltage electricity via transformers to supply electrical equipment in residential, commercial, and industrial facilities. The H61 distribution transformer is a type of infrastructure equipment primarily used in the following scenarios: Supplying power from high-voltage grids to low-voltage grids: During power delivery, high-voltage12/08/2025 -
How to Diagnose Faults in H59 Distribution Transformers by Listening to Their SoundsIn recent years, the accident rate of H59 distribution transformers has shown an upward trend. This article analyzes the causes of failures in H59 distribution transformers and proposes a series of preventive measures to ensure their normal operation and provide effective assurance for power supply.H59 distribution transformers play a vital role in power systems. With the continuous expansion of power system scale and the increasing single-unit capacity of transformers, any transformer failure n12/08/2025
Related Solutions
-
Intelligent Operation Solution for 12kV Vacuum Circuit Breakers: Integrating Real-time Monitoring & Lifetime OptimizationⅠ. Equipment Operation & MaintenanceIntelligent Monitoring System IntegrationMulti-parameter Real-time Monitoring: Embedded sensors (temperature, displacement, Hall effect current sensors) track contact temperature rise, mechanical characteristics (opening/closing speed, overtravel), coil current, and partial discharge signals. Data undergoes preprocessing via edge computing prior to cloud upload.Lifetime Prediction Model: Dynamically evaluates remaining lifespan using electrical wear data06/10/2025 -
SF6 Circuit Breaker Solutions for Outdoor Installation (Anti-Pollution & Seismic Resistance)I.Core Challenges in Outdoor InstallationIn high-voltage transmission and distribution systems, SF6 circuit breakers are exposed to complex outdoor environments for extended periods, facing the following critical issues:Pollution & Insulation DegradationDust, salt fog, and industrial pollutants in outdoor environments easily adhere to equipment surfaces. In coastal or industrial areas, pollution levels may reach Class IV, resulting in insufficient creepage distance and triggering flasho05/12/2025 -
12kV Indoor Vacuum Circuit Breaker Southeast Asia Solution: Anti-Corrosion Compact Design12kV Indoor Vacuum Circuit Breaker Southeast Asia Solution: Anti-Corrosion Compact DesignⅠ. Executive SummarySoutheast Asia faces rapidly growing electricity demand alongside environmental challenges including high temperatures, humidity, salt spray corrosion, and grid instability. This solution recommends Solid Insulated Pole-Mounted Vacuum Circuit Breakers (VCB) featuring high reliability, compact design, and smart monitoring. Tailored for tropical climates and industrial scenarios, it06/10/2025
Haven't found the right supplier yet? Let matching verified suppliers find you.
Get Quotation Now
Send inquiry
Download
Get the IEE Business Application
Use the IEE-Business app to find equipment, obtain solutions, connect with experts, and participate in industry collaboration anytime, anywhere—fully supporting the development of your power projects and business.
