Shenhai-iVakadinadina ni Kacabote
Na ivoli ni kacabote e tiko kina na veika e gadrevi vakaukauwa me baleta na wiring, vakayagataki ni keveli, kei na iwalewale ni yavu, duidui mai na ivoli livaliva e veigauna.
Allowable Current Capacity
Me baleta na iwasewase 1 kei na 2, na kaukauwa e vakatarai me kauta tiko na dauveivakasaurarataki ena kato ni kacabote-ivakadinadina me kakua ni lailai mai na 1.25 times the rated current of the fuse element and the rated current of the circuit breaker’s long-delay overcurrent release. For branch circuits of low-voltage cage asynchronous motors, the allowable current capacity should be no less than 1.25 times the motor’s rated current.
Wire Material Selection
Within the explosion-risk zone level 2, power supply lines should use aluminum core wires or cables with a cross-section of 4mm² or larger, while lighting circuits can use a cross-section of 2.5mm². Ena kacabote environments of risk level 1, distribution circuits should use copper core wires or cables. In places with significant vibration, stranded copper core flexible wires or cables should be chosen. The use of aluminum core cables is not permitted in coal mine shafts.
Electrical Circuit Connection
When opting for aluminum core cables or wires, reliable intermediate joints for zone 1 electrical circuits are necessary within the kato ni kacabote. For zone 2, these intermediate joints must be within or near a junction box in the hazardous environment. Explosion-proof junction boxes are recommended for zone 1, ni taqomaki vakalevu cake junction boxes are suitable for zone 2.
Tu Duadua kei na Veivauci
When laying electrical lines in trenches or conduits, and crossing through walls or floors separating areas with different explosion risk levels, non-combustible materials must be used for sealing.
Select the installation location, laying method, conductor material, and connection method for iyaya livaliva ivakadinadina ni kacabote circuits based on the environmental risk level. The placement of explosion-proof electrical equipment should consider laying electrical lines in areas with lower explosion risks or further from the leak sources.
The above is a brief overview of the protection of electrical wires in explosion-proof boxes. Specific considerations should be based on actual circumstances. Explosion-proof boxes have cable glands and compression screws for the outgoing cables. Ensuring safety involves passing the cable through the gland and compression screw, tightening it so the seal closes the gap around the cable exit, preventing any sparks from escaping.