The main distribution boards for industrial sites are designated for commutation and measurement of electric power of consumers in the low voltage electric network. 3x220/380 V, 50 Hz. .They are installed in the building of the site.
Technical Details
Voltage supply:
Degree of protection:
Temperature of environment during service use:
220/ 380 V ± 10 %, 50 Hz
IP 20 for covered installation IP 43 for open installation
-20 °C to + 40 °C in the open -5 °C to + 40 °C under cover
Degree of insulation:
Climatic performance:
Working position:
660 V
Normal
Vertical
Rated current:
Depending on the diagram
Device
The boards have been manufactured as a welded construction with a protective anticorrosive coating of polyester dust. There has been provided one-sided service at the front part of the boards, made possible through one or two doors with fitted locks. The apparatuses in the main circuits of the boards have been fitted on an installation panel with standard instruments. The symbols of the apparatuses and the connecting cables have been put on them or near them meeting the requirements of the diagrams, using a secret method. The electric diagram of each board has been fitted on the inside of the door.
Working Conditions
Above sea-level height:
Up to 1000 м.
Humidity of air:
Shall not exceed 50 % at a maximum temperature of + 40 °C 90 % at a temperature of + 20 °C
Environment:
Explosion - proof, with absence of chemically aggressive gases and liquids , water vapors and current - conductive dust.
