Power Series Products / Cable Joint Protection Shell
SMC explosion-proof box for cable intermediate joints
Model:
1 / 2
1
2
Description
The main material of this product is high-strength SMC glass-fiber reinforced composite, molded in one operation under high temperature and high pressure. The material is dense and has no weak points, giving it higher strength than ordinary FRP shells. The main body of the intermediate joint is wrapped with self-adhesive fire-resistant and arc-resistant tape; the gaps between the inner ends of the explosion-proof box and the cable are stuffed with intumescent flame-retardant flexible fire-stop putty; then intumescent explosion-proof fire-barrier packs are placed inside the box, and the external high-strength flame-retardant explosion-proof box provides additional protection. The overall structure uses a three-layer fire- and explosion-proof design, thereby achieving integral fire and explosion protection. The product has passed the explosion-proof certificate verification and testing by the National Quality Supervision and Inspection Center for Explosion-Proof Electrical Products and meets the requirements of GB 3836.1-2010 "Explosive atmospheres – Part 1: Equipment – General requirements" and GB 3836.3-2010 "Explosive atmospheres – Part 3: Equipment protected by increased safety 'e'". This product is mainly used for power cable intermediate joints. When a fault occurs, it confines the high-pressure airflow, flames, and fragments generated by an explosion inside the explosion-proof box, and also prevents the spread of fire caused by the fault and the impact of the explosion from causing large-scale damage to other power facilities. The fire- and explosion-proof box is installed outside the intermediate joint. During normal operation, it protects the intermediate joint from external force damage and provides a certain degree of mechanical protection, while also preventing damage to the intermediate joint from fires spreading from adjacent power facilities. When the intermediate joint catches fire or explodes due to an accidental fault, the box provides fire and explosion protection and also offers a certain protective isolation effect for other cables in the cable trench or surrounding equipment; intermediate joint fire protection.
Features
- The main material of this product is high-strength SMC glass fiber composite material, which is molded in one shot in a mold under high temperature and high pressure. The material is dense with no weak points, and its strength is higher than that of ordinary FRP shells. The main body of the intermediate joint is wrapped with self-adhesive fire-resistant anti-arc tape; the gaps between the inner ends of the explosion-proof box and the cable are stuffed with intumescent flame-retardant flexible fireproof putty; then intumescent explosion-proof fire-retardant packs are placed inside the box; with the protection of the external high-strength flame-retardant explosion-proof box, the overall structure adopts a three-layer fire and explosion prevention method, thus achieving overall fire and explosion protection. The product has passed the explosion-proof certificate verification and testing by the National Inspection Center for Quality Supervision of Explosion-Protected Electrical Products, and meets the requirements of GB 3836.1-2010 "Explosive atmospheres – Part 1: Equipment – General requirements" and GB 3836.3-2010 "Explosive atmospheres – Part 3: Equipment protected by increased safety 'e'". This product is mainly used for power cable intermediate joints. In the event of a fault, it confines the high-pressure airflow, flames, and debris generated by the explosion inside the explosion-proof box, and also prevents the fire spread caused by the fault and the explosion impact from causing large-scale damage to other power facilities. The fire and explosion-proof box is installed outside the intermediate joint. During normal operation, it protects the intermediate joint from external mechanical damage, providing a certain mechanical protection effect, while also preventing damage to the intermediate joint caused by fire spreading from surrounding power facilities. When the intermediate joint catches fire or explodes due to accidental faults, it can play a role in fire prevention and explosion suppression, and can also provide certain protective isolation for other cables in the cable trench or surrounding equipment. The intermediate joint fire and explosion-proof box is made of two halves that close around the joint, making on-site installation convenient. Sealing rubber strips are provided at the flange joints on both sides, and waterproof tape is wound around both ends, giving it a certain waterproof performance. Product features: 1. Three-layer integral explosion-proof structure provides all-round protection for the cable joint. 2. The intermediate joint body is wrapped with self-adhesive fire-resistant anti-arc tape, which protects the intermediate joint from external flame burns and also prevents the flame caused by breakdown and burning of the intermediate joint from expanding. 3. Intumescent flame-retardant explosion-proof fire-retardant packs are placed inside the explosion-proof box to buffer the transverse shock wave caused by explosion and prevent further flame spread. Flexible fireproof putty is stuffed at the gaps between the inner ends of the explosion-proof box and the cable to buffer the longitudinal shock wave caused by explosion and also prevent the flame from spreading further to the cable. 4. The high-strength explosion-proof box shell confines the high-pressure airflow, flames, and debris generated by the explosion inside the box, prevents fire spread and explosion impact from causing large-scale damage to other power facilities, prevents damage to the intermediate joint caused by fire spreading from surrounding power facilities, and ensures pedestrian safety. Actual photos of explosion-proof box shells: 10KV three-core cable intermediate joint SMC explosion-proof box (1200mm×Φ180mm) (shell not flame-retardant); 10KV three-core cable intermediate joint SMC fire and explosion-proof box (1200mm×Φ180mm) (flame-retardant shell); 10KV three-core cable intermediate joint SMC fire and explosion-proof box (1100mm×Φ180mm) (flame-retardant shell); 10KV three-core cable intermediate joint SMC explosion-proof box (1600mm×Φ180mm) (shell not flame-retardant); 10KV three-core cable intermediate joint SMC fire and explosion-proof box (1600mm×Φ180mm) (flame-retardant shell); 10KV three-core cable intermediate joint SMC fire and explosion-proof box (reinforced type) (1600mm×Φ180mm) (flame-retardant shell); 35KV three-core cable intermediate joint SMC explosion-proof box (2100mm×Φ240mm) (shell not flame-retardant); 35KV three-core cable intermediate joint SMC fire and explosion-proof box (2100mm×Φ240mm) (flame-retardant shell).
Specifications
1Lightning impulse withstand voltage test (75 kV peak) / No breakdown of the sample
2Explosion test (12 kV, 20 kA, 0.1 s) / No damage and no cracking of the sample
3Structure inspection GB3836.1 GB3836.3 / Relevant clauses / Complete machine / 1) The nameplate and warning sign comply with the standard. 2) Earthing/grounding and marking comply with the standard. 3) The structure meets the standard requirements.
4Impact test GB3836.1 26.4 / Enclosure / The enclosure withstands the impact energy produced by a 1.0 kg test object falling vertically from a height of 0.7 m, with no damage.
5Temperature test GB3836.1 26.5.1 / Complete machine / The maximum surface temperatures of the sample enclosure, cable core wire joint parts, cable sealing parts, and sealing gasket meet the standard requirements.
6Heat resistance and cold resistance test GB3836.1 26.8, 26.9 / Sealing gasket, cable sealing parts, enclosure / The sample is stored continuously for 14 days at 90% relative humidity and 95.0 °C, then placed in a 122.0 °C environment for 14 days, then removed and kept at room temperature for 24 h, and finally placed in a -30 °C environment for 1 day. After the test, the sealing gasket, cable sealing parts, and enclosure show no obvious changes.
1 / 2
1
2
Features
- The main material of this product is high-strength SMC glass fiber composite material, which is molded in one shot in a mold under high temperature and high pressure. The material is dense with no weak points, and its strength is higher than that of ordinary FRP shells. The main body of the intermediate joint is wrapped with self-adhesive fire-resistant anti-arc tape; the gaps between the inner ends of the explosion-proof box and the cable are stuffed with intumescent flame-retardant flexible fireproof putty; then intumescent explosion-proof fire-retardant packs are placed inside the box; with the protection of the external high-strength flame-retardant explosion-proof box, the overall structure adopts a three-layer fire and explosion prevention method, thus achieving overall fire and explosion protection. The product has passed the explosion-proof certificate verification and testing by the National Inspection Center for Quality Supervision of Explosion-Protected Electrical Products, and meets the requirements of GB 3836.1-2010 "Explosive atmospheres – Part 1: Equipment – General requirements" and GB 3836.3-2010 "Explosive atmospheres – Part 3: Equipment protected by increased safety 'e'". This product is mainly used for power cable intermediate joints. In the event of a fault, it confines the high-pressure airflow, flames, and debris generated by the explosion inside the explosion-proof box, and also prevents the fire spread caused by the fault and the explosion impact from causing large-scale damage to other power facilities. The fire and explosion-proof box is installed outside the intermediate joint. During normal operation, it protects the intermediate joint from external mechanical damage, providing a certain mechanical protection effect, while also preventing damage to the intermediate joint caused by fire spreading from surrounding power facilities. When the intermediate joint catches fire or explodes due to accidental faults, it can play a role in fire prevention and explosion suppression, and can also provide certain protective isolation for other cables in the cable trench or surrounding equipment. The intermediate joint fire and explosion-proof box is made of two halves that close around the joint, making on-site installation convenient. Sealing rubber strips are provided at the flange joints on both sides, and waterproof tape is wound around both ends, giving it a certain waterproof performance. Product features: 1. Three-layer integral explosion-proof structure provides all-round protection for the cable joint. 2. The intermediate joint body is wrapped with self-adhesive fire-resistant anti-arc tape, which protects the intermediate joint from external flame burns and also prevents the flame caused by breakdown and burning of the intermediate joint from expanding. 3. Intumescent flame-retardant explosion-proof fire-retardant packs are placed inside the explosion-proof box to buffer the transverse shock wave caused by explosion and prevent further flame spread. Flexible fireproof putty is stuffed at the gaps between the inner ends of the explosion-proof box and the cable to buffer the longitudinal shock wave caused by explosion and also prevent the flame from spreading further to the cable. 4. The high-strength explosion-proof box shell confines the high-pressure airflow, flames, and debris generated by the explosion inside the box, prevents fire spread and explosion impact from causing large-scale damage to other power facilities, prevents damage to the intermediate joint caused by fire spreading from surrounding power facilities, and ensures pedestrian safety. Actual photos of explosion-proof box shells: 10KV three-core cable intermediate joint SMC explosion-proof box (1200mm×Φ180mm) (shell not flame-retardant); 10KV three-core cable intermediate joint SMC fire and explosion-proof box (1200mm×Φ180mm) (flame-retardant shell); 10KV three-core cable intermediate joint SMC fire and explosion-proof box (1100mm×Φ180mm) (flame-retardant shell); 10KV three-core cable intermediate joint SMC explosion-proof box (1600mm×Φ180mm) (shell not flame-retardant); 10KV three-core cable intermediate joint SMC fire and explosion-proof box (1600mm×Φ180mm) (flame-retardant shell); 10KV three-core cable intermediate joint SMC fire and explosion-proof box (reinforced type) (1600mm×Φ180mm) (flame-retardant shell); 35KV three-core cable intermediate joint SMC explosion-proof box (2100mm×Φ240mm) (shell not flame-retardant); 35KV three-core cable intermediate joint SMC fire and explosion-proof box (2100mm×Φ240mm) (flame-retardant shell).