A2Z-DGIS Series Dry Air Gas Insulated Switchgear is designed for medium voltage applications where environmental responsibility, compact design, operational safety, and reliable power distribution are required.
Instead of SF6 gas, A2Z-DGIS Series uses climate-friendly dry air insulation. This structure helps eliminate the operational difficulties and environmental concerns associated with SF6 gas systems while maintaining the advantages of gas insulated switchgear technology.
All switching equipment is housed in a sealed stainless-steel tank in accordance with IEC 62271-200 requirements. The dry air insulation medium does not contain F-gases, is colorless, non-flammable, non-toxic, and does not contain chemically harmful components.
A2Z-DGIS Series offers a compact and modular structure suitable for medium voltage distribution networks, renewable energy plants, industrial facilities, transformer substations, transportation infrastructure, and utility applications.
The series provides high service continuity, internal arc safety, mechanical and electrical interlocking, ergonomic operation, and flexible system configurations according to project requirements.
Application Areas
Application Area
Power generation facilities
Power transmission and distribution systems
Renewable energy plants
Heavy industry facilities
Transformer substations
Oil and gas facilities
Infrastructure and building projects
Transportation systems such as shipyards, railways, and airports
Chemical industry
Pipeline installations
Medium voltage distribution networks
Industrial power distribution systems
Advantages
Advantage
Climate-friendly dry air insulation instead of SF6 gas
Does not contain F-gases
Helps eliminate SF6 gas handling processes
Reduces operational costs related to SF6 gas management
Compact and modular structure
User-friendly design for operation and maintenance
Cable compartment allows front access to current transformers and voltage transformers
No special training required for product operation
Flexible and integrated solutions based on project requirements
Factory-tested production structure
Possibility of replacing a panel without touching adjacent panels
Suitable for cost-effective and logical switching configurations
Mechanically and electrically interlocked design according to IEC 62271-200
Ergonomic operation
Optional 5-year warranty
Key Features
Feature
Description
Insulation Medium
Dry air insulation
Environmental Impact
SF6-free and F-gas-free structure
Gas System
Sealed pressure system
Design Concept
Innovative, sustainable, and technology-focused design
Monitoring
Sensor integration and real-time monitoring of system operation
Protection
Sealed pressure system against dirt, moisture, and external factors
Safety
Internal arc classified and mechanically interlocked structure
Maintenance
Lower maintenance requirements compared to conventional gas handling systems
Flexibility
Suitable for cable and busbar side current transformer and voltage transformer options
Operation
Ergonomic switching and operation design
Safety Features
Safety Feature
Description
Internal Arc Classification
IAC AFLR internal arc classification
Service Continuity
LSC-2B service continuity class
Partitioning Class
PM partitioning
Protection Class
IP3X with doors closed, IP2X between compartments
Interlocking System
Safe mechanical interlocking according to IEC 62271-200
Door Safety
Special hinged door design for safe operation
Busbar Safety
Touch-safe insulated busbar structure
SF6-Free Safety
Eliminates operational difficulties related to SF6 gas handling
Earthing
Reliable earthing and safe switching operation
Service Conditions
Service Condition
Value
Installation Area
Indoor
Minimum Ambient Temperature
-5°C
Maximum Ambient Temperature
40°C
24-Hour Average Ambient Temperature
35°C
Operating Conditions
Heavy-duty application conditions
Color Options
Area
Color
Front Covers
RAL 9003
Side Covers
RAL 7015
Dry Air Insulation Pressure
Parameter
Unit
Value
Filling Pressure, Gauge
bar
2.0 at 20°C
Minimum Operating Pressure, Gauge
bar
1.8 at 20°C
Circuit Breaker and Disconnector Endurance
Equipment
Electrical Class
Mechanical Class
Standard
Circuit Breaker
E2
M2
IEC 62271-100
Capacitive Current Switching
C2
—
IEC 62271-100
Disconnector / Earthing Switch
E2
M0
IEC 62271-102
Dimensions
Dimension
Unit
Value
Width
mm
650
Height
mm
2350
Depth
mm
1500
Main Compartments
Compartment No.
Compartment Name
1
Busbar Compartment
2
Low Voltage Control Compartment
3
Pressure Relief Channel
4
Switching Equipment Compartment
5
Switching Equipment Mechanism
6
Cable Connection Point
7
Cable Compartment
Standards
Equipment
IEC Standard
EN Standard
Medium Voltage Switchgear
IEC 62271-1, IEC 62271-200
EN 62271-1, EN 62271-200
Circuit Breakers
IEC 62271-100
EN 62271-100
Disconnectors / Earthing Switches
IEC 62271-102
EN 62271-102
Insulation
IEC 60071
EN 60071
IP Code
IEC 60529
EN 60529
IK Code
IEC 62262
EN 50102
Current Transformers
IEC 61869-2
EN 61869-2
Voltage Transformers
IEC 61869-3
EN 61869-3
Voltage Indicator
IEC 62271-213
EN 62271-213
Product Code
Series Code
Product Name
A2Z-DGIS Series
Dry Air Gas Insulated Switchgear
A2Z-DGIS-24
24 kV Dry Air Gas Insulated Switchgear
A2Z-DGIS-36
36 kV Dry Air Gas Insulated Switchgear
Parameter Specs
A2Z-DGIS SeriesModel Node
Rated Voltage
24 / 36 kV
Power Frequency Withstand Voltage
50 / 70 kV
Lightning Impulse Withstand Voltage
125 / 170 kV
Rated Frequency
50 / 60 Hz
Rated Busbar Current
Up to 2500 A
Rated Feeder Current
1250 / 2000 A
Short-Time Withstand Current
Up to 31.5 kA, 3 s
Peak Withstand Current
78.8 kA
Internal Arc Classification
31.5 kA, 1 s, AFLR kA
Insulation Medium
Dry air
Installation Type
Indoor
Switching Equipment Housing
Sealed stainless-steel tank
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