Description
PGL1 and 2 low-voltage alternating-current distribution panels are applicable low-voltage distribution systems of AC 50Hz and rated working voltage not exceed AC 380V in power plants, transformer substations, industrial and mining enterprises, used for electric power, distribution and lighting. The products comply with standards GB7251 and GB4720.
Indoor installation, low-voltage power distribution unit with open double-sided maintenance. The basic structure of the power distribution cabinet is composed of welded steel plates and angle steel. There is a door in front of the cabinet, and a dashboard above the cabinet surface, which is a small door that can be opened, and an indicating instrument can be installed. For cabinets assembled side by side, partitions are added between the cabinets to reduce the possibility of expanding accidents due to failures in a single cabinet. The main busbar is installed on the sub-insulation frame above the rear frame of the cabinet, and a busbar protective cover is provided to prevent the vicious accident of the main busbar short circuit caused by falling metal objects from above.
Environmental Conditions:
- Ambient air temperature: -5℃~+40℃, average temperature in 24h should not exceed +35℃.
- Air should be clean. Air relative humidity should not exceed 50% at +40℃, higher relative humidity is permissible at lower temperature condition, for instance, 90% at +20℃.
- Altitude should not exceed 2000m;
- Installation obliquity should not exceed 5°.
- The installation site should be free of strenuous vibration or impact, no corrosion affecting the electric components.
