KEY FEATURES
2014/34/UE (ATEX)
high level of security
remote/local control
compact design
SELECTED technical data
to 7,2 kV
maximum operating voltage
to 6,0 kV
rated insulation voltage
to 6,0 kV
rated switching voltage
50/60 Hz
power supply frequency
to 630 A
rated continuous current
to 400 A
maximum continuous current of a single outlet
Technical
specifications
Characteristic features
Nagłowek całej skecji
Dwie kolumny
The dual-outlet compact unit is an electrical connector used in underground mining distribution and branch networks with a medium voltage of 6kV and an isolated neutral point of the supply transformer. The unit is an explosion-proof device and, in accordance with Polish regulations implementing the Geological and Mining Law, it can be installed in underground workings of non-methane and methane mining plants with methane hazard levels “a”, ‘b’ and “c” and coal dust explosion hazard classes A and B. The position of the contacts of all main circuit devices can be observed through flameproof sight glasses, and the presence of voltage at the unit’s supply terminals is indicated on voltage indicators.
The dual-outlet compact unit is equipped with a local and remote control system (via external control panels or a data transmission interface) and the option to connect external technological interlocks. Optional intrinsically safe separators installed outside the outlet chamber enable connection to external control circuits and data transmission. The unit’s design has been developed in accordance with the requirements of the ATEX directives, and the declaration of conformity makes the two-drain compact unit suitable for use in rooms with a Group I, Category M2 explosive atmosphere. In addition, the compact unit can be installed in generally accessible rooms of a mining plant, similar to low-voltage equipment.
Technical data
COMPACT UNIT EH-d03-W/6,0/I/03
| Maximum operating voltage | 7,2 kV |
| Rated insulation voltage | 6,0 kV |
| Rated switching voltage | 6,0 kV |
| Rated frequency | 50/60 Hz |
| Rated continuous current | 630 A |
| Maximum continuous current of a single drain | to 400 A |
| Number of drains | 2 |
| Rated breaking current | 20 kA |
| Rated 1-second withstand current | 25 kA |
| Rated peak current | 51 kA |
| Maximum short-circuit power of the connected network | 100 MVA |
| Degree of protection | IP54 |
| Weight | ~2300 kg |
Configurations diagram
DIagram
COMPACT UNIT EH-d03-W/6,0/I/03
APPEARANCE, DIMENSIONS, AND DESCRIPTION
COMPACT UNIT FOR 6 kV VOLTAGE
