• SF6-free air-insulated switchgear for secondary distribution
SF6-free air-insulated switchgear for secondary distribution
discuss personally
Model
UniSec Air-24
Basic info
Brand ABB
Model NO. SF6-free air-insulated switchgear for secondary distribution
Rated voltage 24kV
Rated frequency 50/60Hz
Series UniSec Air
Product Detail

Description:

UniSec Air is a medium voltage switchgear designed for secondary distribution up to 24kV, 630A, 20kA. It contains GSec Air, three-position load break switch or disconnector and earthing switch. This new component has a shunt vacuum interrupter for breaking capacity, dry air as the insulation medium, and a global warming potential (GWP) of zero. The switchgear also contains a vacuum circuit breaker and is fully compliant with IEC standards and the U F-gas regulation (EU) 2024 / 573. 
The switchgear is based on a highly flexible and modular  concept with standardized solutions that can be  readily configured to meet the specific needs of each application. UniSec Air is fully tested according to IEC standard 62271-200. 
UniSec Air is internal arc classified, IAC A FLR up to 20 kA, assuring safe operations for technicians when standing in  front of the switchgear. Robust control and protection, metering, monitoring, and diagnostics suitable for various applications are also available. 
UniSec Air is designed with a refined interface and with  the same footprint, operations, and backward compatibility as the original UniSec switchgear,facilitating integration into existing systems and extensions of the installed base.

Customer benefits:

F-gas regulation compliance 

  • Fully compliant with the EU F-gas regulation (EU) 2024 / 573

  • GWP of 0

Flexible and modular design

  • Better accessibility to MV cable connection and simplified installation, use, and maintenance.

  • Wide range of functional units equipped with LBS and disconnector, circuit breaker, conventional measuring transformers, current and voltage sensors, and protection relay solutions, making it suitable for most indoor applications.

  • Provides flexibility for a high level of customization to meet demanding requirements and is easy to order thanks to user-friendly configurator tools.

  • Compact design with multiple functional units width 375, 500 and 750mm for installation in a wide variety of electrial rooms and layouts.

  • Backward compatibility between UniSec Air and UniSec allows for easy integration into existing systems and extensions of the installed base.

 Safe and Reliable

  •  Internal arc classification available with various gas exhaust variants  for enhanced safety.

  • Service continuity solutions LSC2B / LSC2A / LSC2 tailored for application needs, ensuring minimal service interruption.

  • High operator safety features an internal arc-proof design and a wide range of mechanical and electrical interlocks to enhance operator safety.

  • The GSec Air component has an internal volume of less than 25 liters.

  • Fast and dependable delivery times with pre-engineered just to install (JTI) switchgear solutions.

Main Technical Characteristics:

 GSec Air:

 

Know your supplier
ABB
As an authorized distributor of ABB products, we take great pride in our partnership.
Main Categories
High voltage/Low voltage
Business Type
Sales
Highest Annual Export (USD)
$580000000
Professional Experience
11 years
Workplace
20000m²
占位
占位
Documents
Public.
SF6-free air-insulated switchgear for secondary distribution
Manual English
PDF
FAQ
Q: What standards and certifications that ABB’s medium voltage switchgear products comply with?
A:
Our medium voltage switchgear products comply with international standards such as IEC 62271, GOST, GB/DL. They are also certified by leading industry bodies to ensure the highest levels of safety and performance. ABB also offers medium voltage switchgear products for ANSI standards.
Q: What’s the difference in the circuit breaker for air-insulated vs gas-insulated?
A:
Air-insulated switchgear circuit breaker is typically removable or withdrawable. The circuit breaker is based on vacuum circuit technology. In the gas-insulated, it is fixed mounted. The function of withdraw is provided by a separate disconnecting switch. Typically, a three-position switch with connected, disconnected, and ready-to-earth position.
Related Products
Related Knowledges
Installation and Commissioning of 10kV Dry-Type Transformers
Installation and Commissioning of 10kV Dry-Type Transformers
By James, 10 Years of Electrical Equipment Maintenance ExperienceHi everyone, I’m James, and I’ve been working in electrical equipment fault repair for 10 years.Over the past decade, I’ve worked in factories, substations, and distribution rooms of all sizes, involved in the installation, commissioning, maintenance, and troubleshooting of dry-type transformers. Dry-type transformers are among the most common electrical devices we deal with on a daily basis.Today, a new colleague
James
07/01/2025
What are the reasons for low insulation at the low-voltage side of a dry-type transformer?
What are the reasons for low insulation at the low-voltage side of a dry-type transformer?
Hi everyone, I’m Felix, and I’ve been working in electrical equipment fault repair for 15 years.Over these years, I’ve traveled across factories, substations, and distribution rooms all over the country, troubleshooting and repairing all kinds of electrical equipment. Dry-type transformers are among the most common devices we deal with.Today, a friend asked me:“What does it mean when the low-voltage side of a dry-type transformer has low insulation resistance?”Great
Felix Spark
07/01/2025
What tests are required for dry-type transformers?
What tests are required for dry-type transformers?
1 Pre - commissioning InspectionAs a front - line tester, before formally commissioning a dry - type transformer, I need to carry out a comprehensive and systematic inspection. First, I conduct a visual inspection of the transformer body and its accessories, carefully checking for mechanical damage or deformation. Then, I check whether the leads of the high - and low - voltage windings are firmly connected and whether the bolt tightening torque meets the standard requirements (usually 40 - 60N&m
Oliver Watts
07/01/2025
What aspects need attention during the installation of dry-type transformers?
What aspects need attention during the installation of dry-type transformers?
1 Pre - installation PreparationAs a front - line installer, I know very well that the preparation work before installing a dry - type transformer must be thorough. First, I will carefully review the design drawings and technical documents, and check one by one the technical parameters such as the model specification, rated capacity, and voltage level of the transformer to ensure they are in full compliance with the design requirements. Then, I will conduct an unpacking inspection of the transfo
James
07/01/2025
What are the causes of dry-type transformers burning out during operation?
What are the causes of dry-type transformers burning out during operation?
1 Fault PhenomenonI am engaged in front - line fault maintenance work, and recently encountered problems with dry - type transformers. Dry - type transformers have a simple structure, are convenient for transportation, and easy for maintenance. They are widely used in power distribution places with relatively high environmental protection requirements. Because of their good fire - resistance, they can be installed in load - center areas to reduce voltage loss and power loss.The property manageme
Felix Spark
07/01/2025
Method for Automatic Isolation of Customer Equipment Faults by Load Switches in Distribution Networks
Method for Automatic Isolation of Customer Equipment Faults by Load Switches in Distribution Networks
1 OverviewDistribution network safety has long been under - addressed, with its automation lagging substation automation . Using 10 kV intervals of existing substations to set line section points meets future grid needs . Configuration of distribution switches, section switches, and protection must match substation outgoing - line protection for reliability. Fault isolation, self - healing, and restoration are key to distribution automation .Scholars have studied smart distribution network fault
Felix Spark
06/30/2025
×
Inquiry
Download
Experts Electrical is dedicated to serving the personnel in the global power industry.
Join Experts Electrical, not only can you discover power equipment and power knowledge, but also canhnd like - minded friends!