Air Insulated Modular Cell Types

It consists of 3 main parts. These sections are secured by switching and mechanical locking, and the passages to ensure continuity are isolated from other sections.

A – Low Voltage Section
This section contains all secondary circuits for control (measurement, protection, monitoring, communication and other associated systems).

B – Breaker and Cable Section
The following equipment is used in the circuit breaker section:
– Vacuum Breaker
– SF6 Breaker
– SF6 Load Breaker
– SF6 Disconnector
– Voltage Transformer
– Current Transformer
– Medium Voltage Fuse
– Capacitive Voltage Divider
– Cable gland and connection parts

C – Busbar Section:
In the busbar section, there are electrolytic coppers, insulators and bushings selected in accordance with the rated current. Access to this section requires special instructions and safety precautions.

Maintenance and Control

Armtek “ARME Series” offers more reliability, more security and maximum ease of maintenance. Production facilities are ISO-9001 certified, quality is assured with extensive design and production tests. The low voltage compartment provides sufficient space to easily test and replace internal wiring. The independent busbar compartment is configured in such a way that it does not affect any accidents in adjacent panels. Therefore, it does not pose a risk when performing maintenance and control in other sections. Since all equipment can be easily disassembled and installed, maintenance and inspection times are minimized.

Security Considerations

Air Insulated Modular Switchgears are designed to prevent explosion or damage to peripheral devices in the event of internal arcing. A high degree of safety for the user and the environment is provided in Air Insulated Modular Switchgears. Short circuit, short-term current and internal arc tests have been tested in accredited certified laboratories in accordance with the IEC 62271-200 standard. It is in IP3X protection class to protect from the external environment.

Various Precautions Mechanical locking provides security measures against misuse and applications. It is not possible to open the cell door without turning the circuit breaker and disconnectors open and without closing the grounding switch. All maneuvers and operations are disabled while the cell door is open.

It is connected with mechanical interlocks between cell parts and with other cells with which it is associated. The hinge and lock system has a solid structure and is a firewall against faulty operations. The IP surveillance window on the breaker door allows you to see the status of the breaker. The grounding switch can be locked in accordance with insulation and line safety. The security of the line as a whole is ensured by communication and signal systems.


LSC2B Maximum Service Continuity Grounded metal partitions between partitions Maximum human safety with AFLR internal arc test feature Safe against operational errors with electrical and mechanical interlocks

Fast circuit break feature and easy maintenance with withdrawable type Vacuum / SF6 Breakers Continuity in the grounding system

Always expandable capacity with modular compact design. Short-term endurance test 16 kA / 1 s.

Long working life – 10,000 switching cycles (m2) Easy and safe use designed with all safety measures

After-sales service and spare parts availability Low maintenance costs

Relevant Standards

IEC 62271 High Voltage Switchgear and Control
Arrangement – ​​Common Features
IEC 62271-200 High Voltage Switchgear and Control
Arrangement (up to 52kV AC)
IEC 62271-100 Alternating Current Circuit Breakers
IEC 62271-102 Alternating Current Disconnectors and Earthing
IEC 62271- 105 Alternating Current Switch Fuse
IEC 61869-2 Current Transformers
IEC 61869-3 Voltage Transformers
IEC 60273 Post Insulators
IEC 60051 Electrical Measuring Instruments
IEC 60255 Secondary Protection Relays
IEC 61243-1 Voltage Determination Systems