1. Installation requirements for flameproof explosion-proof boxes.
The explosion-proof surface should be coated with anti-rust oil, and no paint or glue is allowed;The inner diameter of the rubber sealing ring of the flameproof electrical equipment cable entry device should be suitable for the outer diameter of the introduction cable, and be fully pressed with the original compression nut or pressure plate, and the sealing ring cannot be directly pressed with steel pipe or flexion pipe;Redundant cable entries should be plugged with blind pads that comply with the standardsThe fasteners of the explosion-proof surface should be provided with spring washers and fully tightened;The clearance and creepage distances of junction boxes used for external conductor or cable wiring shall meet the requirements specified in the standard.
3.Installation requirements for increased safety explosion-proof boxes.
The introduction cable or wire of the explosion-proof box equipment should be reliably connected with the connector, and meet the requirements of electrical clearance and creepage distanceThe rubber seal inside the cable entry device should be fully pressed with a compression nut or pressure plate;Redundant cable entries should be plugged with blind pads in accordance with the standardsThe increased safety motor should be equipped with an overload anti-time protection device to ensure that the power supply is disconnected within the time specified in the motor nameplate when the motor is stalledAfter the installation is completed, the enclosure protection level of the increased safety electrical equipment should meet the IP54 requirements.