Construction of cable laying in the laying, the total cross-sectional area of ​​insulated conductors shall not exceed 40% of the cross-sectional area of ​​the pipe; different circuits, different voltage levels and AC and DC conductors, should not wear in the same conduit, the same AC circuit wire Wear in the same metal conduit, three-phase or single-phase AC cables, shall not be split in a separate wear in the steel conduit; wire in the tube shall not have joints and kinks, joints should be located in the junction box (box). In multiphase power supply, the color selection of the cable insulation layer in the same building and structure shall be the same, that is, the protection ground wire (PE wire) - yellow-green color, neutral wire-light blue, A phase-yellow, - green, C phase - red. Wiring single 10mm2, multi-strand 2.5mm2 and below, can be directly connected with the device, the above through the terminals, and each not more than 2; actual connection cable more than 2, should be small busbar tap.
The soft curtain quick cold storage door has a simple design and is designed with a heating antifreeze device to ensure smooth and efficient operation of the product in a low temperature working environment. The structure incorporates the function design of collision avoidance recovery. When the door body is accidentally impacted, it deviates from the track and automatically repairs the return position during the ascent process. This structure not only facilitates the safe and smooth operation of the door body, but also operates more than 150,000 times a year without failure. It extends the life of the product while reducing component replacement and maintenance costs.
Such rapid door is specially designed for freezer, cold room, or cool room. It is made from 30 mm thick thermal insulated,sandwich curtain, and with all-round heating device to avoid frozen. Thus it can work well in low temperature like -25 º C. It can reduce thermal transmission by fast opening and closing, and thermal insulated door curtain. For each door, it can help customer save energy cost by at least USD 8000 every year,than traditional normal speed cold room sliding doors.
Cold Storage High Speed Door, high speed freezer doors, cold store doors, cold storage zipper doors, industrial freezer doors SHENZHEN HONGFA AUTOMATIC DOOR CO., LTD , http://www.hongfahsrud.com