KP8024 Get wet in the rain cable impact vibration/combustion testing machine
1, scope of application:
Is suitable for the rated voltage is less than 450/750 v, the insulation of the cable fire resistance test, fireproof and waterproof test and mechanical fire test, can be a long time to keep the circuit complete.
Second, conform to the standard:
British fire-resistant cable standard BS6387 "under the condition of fire remain intact circuit cable performance requirements specification".
Only the integrity of the fire conditions (IEC 60331-11 / BS 6387 D2)
Fire and water coexist under the condition of the integrity of the article (BS 6387 D3)
Caught fire and mechanical impact under the condition of the integrity of the article (BS 6387 D4)
Third, main technical parameters
3.1 fire test:
Refractory test bed includes: cable support system, continuous detection device, heat source
Cable support system: cable through the clip horizontal clamped on both ends of the cable sheath. Cable is made up of two metal rings in the middle section (300 mm) distance is fixed.
Continuous detection device: when the test let electricity pass through all of the cable core, and have enough ability to keep the test voltages to achieve maximum allowable leakage current 3 a. At the other end of the cable each conductor connects A lamp, and the cable of rated voltage under load close to the current 0.25 A. Test voltage: 200 ~ 1000 v is adjustable.
Heat: the heat is a methane can be forced to supply 610 mm long, intensive fire tube type gas burner; Temperature measurements: 2 mm diameter armored thermometer in near the air inlet, parallel to the 75 mm above the burner; Test the flame temperature and time: (see BS6387 burning level) 650 A. C + 40 ° C B 750-3 hours. C, 950 C + 40 ° C - 3 hours. C + 40 ° C - 3 hours S 950. C + 40 ° C - 20 minutes
3.2 water resistance test:
Cable support system, continuous detection device, heat source, water spray device.
Cable support system: a cable connected to the two 25 mm wide just plate of metal stents, stent with metal clip, clip the spacing is 200 mm.
Continuous detection device: let electricity pass through all of the cable during the experiments, and have enough ability to keep the test voltages to achieve maximum allowable leakage current 3 a. At the other end of the cable each conductor connects A lamp, and the cable of rated voltage under load close to the current 0.25 A. Test voltage: 200 ~ 1000 v is adjustable.
Heat: the heat: a strip of the burner can burn to the length of 400 mm, 400 mm cable sample. Burner assembly can adjust, can provide a bright flame temperature of 650 + 40 ° C; Temperature measurements: 2 mm diameter armored thermometer under the cable surface; The test flame temperature: 650. C + 40 ° C;
Sprinkler system: a nozzle is installed on the test stand, in the center of the burner. The water pressure is 250 kpa to 350 kpa, near the specimen spray 0.25 litres per square metre to 0.25 litres of water per square metre.
3.3 resistance to mechanical shock and fire:
Vibration device, heat source, wall and its installation and continuous detection device
Vibration device: vibration device consists of a mild steel bar (diameter 25 mm + / - 5%, the length 600 mm + / - 5%). The great longitudinal section parallel to the wall, above the wall top 200 mm. A shaft will be divided into two parts, 200 mm and 400 mm long part toward the wall. Between 30 + 2 s from 60 ° C drops from the parallel position to the middle position of the wall.
Heat source: a strip of burner can burn to the length of 400 mm, 400 mm cable sample. Burner assembly can adjust, can provide a bright flame temperature of 650 ° C; Temperature measurement: the diameter is 2 mm armoring of thermometer, thermometer thermometer through metope is a 8 mm to 10 mm away from wall. Temperature measured by the following program: at one end of the low carbon steel bar, the diameter of 3 mm + / - 5% length of 300 mm attached to a thermometer, enable it to detect the temperature of the rod. Grab the stick close to the fire to keep the distance with the flame in the 40 mm to 50 mm. The temperature when the flame temperature of 950 ° C, the temperature of the steel bar in 10 s and 20 s can reach 400 ° C, when the flame temperature of 650 ° C, the temperature in the 20 s to 40 s bar can reach 400 ° C; Test flame temperature and time: the test is to be selected from the table: 650 X 40 ° C to 650 + Y + 40 ° C Z 950 + 40 ° C.
Wall and its installation: cable is fixed on a vertical wall, the wall is composed of heat resistant, flame retardant materials, and fixed on the two levels of steel beam, a in the upper portion of the plate and the other one at the bottom of the plate.
Continuous detection device: let electricity pass through all of the cable during the experiments, three single phase transformers, and have enough ability to remain in the test voltages
Maximum allowable leakage current 3 a. At the other end of the cable each conductor connects A lamp, and the cable of rated voltage under load close to the current 0.25 A. Test voltage: 200 ~ 1000 v is adjustable
1. Only under the condition of fire and the integrity of the test article (see BS 6387 D2 / IEC60331-11)
Detection, with as many as five ring clamp galvanized stainless steel box, placed under test cable, using 610 mm long tubular burner burning for three hours, under appropriate temperature detection circuit integrity.
2. Under the condition of fire and water coexist integrity test (BS 6387 article D3)
Cable under test on the metal stents, overall above ground framework within the large stainless steel sink. Burner installed on frame, sprinkler head, power, and the integrity of the test circuit. For the cable length is about 400 mm under 650 ℃ for a period of exposure to flame, with five burner heating 15 minutes interval is 100 mm. Then according to the requirement of the standard BS 6387 (D3), after open sprinkler cable under the double impact of flame and water must hold circuit complete for another 15 minutes.
3. Caught fire and mechanical impact under the condition of the integrity of the article (BS 6387 D4)
IEC60331 / BS EN 50200-11)
Cable into non-combustible material vertical plate (plate size is 900 mm * 300 mm * 9 mm). Vertical panels on the rubber bushing, every 30 seconds can withstand the impact of vertical plate along the metal rod. Cable must be able to after exposure to a row of flame impact conditions hold circuit and metal rod complete up to 15 minutes.
