Becker Varis

Switchgears

The flameproof switchgears of our Endis® product range have been developed for use in hazardous areas (Group I - Category M2) in underground mining operations. They are used for energy distribution of electrical equipment in IT AC systems. 

Switchgears
The flameproof switchgears of our Endis® product range have been developed for use in hazardous areas (Group I - Category M2) in underground mining operations. They are used for energy distribution of electrical equipment in IT AC systems. Based on the requirements, the devices are used as circuit-breakers, motor control devices for switching, controlling and monitoring alternating current (AC) or frequency converter motors and as a lighting system.
 
Compact Design
Our Endis® switchgears have no terminal compartments. Plug-in modules replace switches, contactors and discrete monitoring technology. There are no conventional disconnecting switches. Every plug-in unit is part of the disconnecting device. The power bus with plug contacts for the plug-in modules replaces conventional wiring. This saves space. No additional wiring means saving time and costs. All switchgears have standardised slots, into which any plug-in module suited for the slot type can be inserted.
 
Modular Technology
Modular technology? That isn't anything special. But Endis® is. Our modular technology differs considerably from the standard. There is no connection between the plug-in module and those switchgear for power and control lines, which have to be connected manually. The plug-in module must only be pushed into the switchgear and switched on using the disconnection device. In the process, all connections are established automatically. No further effort is required. An appropriate plug-in module is available for every application, whether as a power contactor for a large drive, a double contactor for low to medium power drives (even as a double reversing contactor), insution monitor with lighting outputs or a power switch for medium voltage.
 
Integrated Control and Monitoring Electronics
No individual monitoring components have to be set manually. A protective module, an electronic unit that assumes all control and monitoring functions of the plug-in module, has been integrated into the system. The plug-in modules can be systematically controlled in parallel via contacts, but also serially using field bus adapters through our MINCOS product families.
 
Easy Parameterisation
The protective module in the system communicates with the display module in the switchgear via a serial data bus. There, the most important information from the plug-in modules are displayed and all parameters are set and saved as a protection against a voltage loss. The flameproof enclosure of the switchgear does not have to be opened for this purpose. When changing a plug-in module, the values stored in the display module are automatically transferred to the protective module in the system and stored there. A re-entry of the paramters is therefore not necessary.
 
Plug-In Connections with Disconnecting Devices
In the case of the Endis® switchgear for low voltage, there is no excessive work for wiring and connecting to terminals in tight terminal compartments required. All external connections are created using plug-in connectors. This saves time during the installation. Every plug-in module has a disconnecting device for its seperation from the power bus. The power connector plug system covers the spectrum of main voltages up to 1.1 kV and nominal currents of 400 A. All three desings with nominal voltage 250 V for lighting systems and 1.1 kV for small and large drives have flameproof enclosure type "d" protection when assembled. The assembly of both 1.1 kV designs is very easy and can also be performed underground. Due to the solid, completely screwed construction, the plugs can be reused. Switchgear for medium voltages of 3.3 kV are naturally also available with plug-in connectors.