Wire and Cable Fire Resistance Tester
1.Application
This test apparatus to be used for testing cables required to maintain circuit integrity when subject to fire alone or fire with shock where the test condition is based upon flame with a controlled heat output corresponding to a temperature of at least 750˚C or fire with shock at a temperature of at least 830 °C.
2.Key Parameters
Structured with 3 rows of cross holes, Average front width of burner: 15mm, Hole diameter: 1.32mm, Distance between the center: 3.2mm
The current is provided by a three-phase star transformer with sufficient capacity to maintain the required test voltage when circuit integrity cannot be maintained.
Imported pressure reducing valve can provide an outlet pressure of 0.1Mpa±3pa;
When circuit integrity cannot be maintained, the corresponding indicator lamp is extinguished, the computer automatically determines the state and records the time, and sends out the sound and light alarm.
3.Standards
IEC：IEC 60331-11&12：2002，IEC 60331-21~23：1999
IEC 60331 Test for electric cables under fir conditions Circuit integrity
IEC 60331 Part 11 Fire alone at a flame temperature of at least 750˚C
IEC 60331 Part 21 Cables of rated voltage up to and including 0.6/1kV
IEC 60331 Part 12 Fire with shock at a flame temperature of at least 830˚C
IEC 60331 Part 31Fire with shock Cables of rated voltage up to and including 0.6/1kV
Wire and Cable Heat Release Test Device
The duct section houses all gas sampling probes, temperature and mass flow probes and has ports for the smoke measuring system.
Paramagnetic oxygen analyzer, using the method of paramagnetic change to measure the concentration of oxygen in the gas. Concentration range of 0-25%.
EN：EN 50399
GB/T 31248：2014
UL Cable Vertical-Tray Flammability Testing Equipment
| Test room | Fire resistance bricks for walls and which density is 1698kg/m3, Interface spray black paint, and the outer size of the room is W2438×D2438×H3353mm |
| Door | Stainless steel frame and wired-glass door, the overall size is W0.9× H2.0m |
| Smoke collection hood | Which made by stainless steel, each side is to be sloped 400, the hood as a cube and each side length is 914mm, there is a dust mesh under the hood and each side length is 610mm |
| Observation window | Which as a square and each side length is 457mm, 1295mm distance from the lower side of the window to floor, 1143mm distance from right of the window to the wall |
| Air inlets | which size are 559×343mm, 914×305mm, 2438×343mm |
| Exhaust duct | L9000×φ406mm, install it at the centered in on the right side of the cube hood |
| Cable tray | H2400mm, the rundle as a square which size is L305×W25×D25, and both rundles distance is 299mm |
| Burner | L341mm×D30mm with 242 holes |
| Gas flux | 13.2L/min, 0.1Mpa for gas pressure |
| Flux checking | The differential pressure flowmeter sense smoke pipeline flow speed , provide basis for the control of fan speed |
| Light transmittance | photocell sense the smoke density during the flaming |
| Height of flame | Infrared visible light show the current height of the flame real-time |
| Special software | Draw up the curve by the pip flow, smoke density, height of the flame ,and form a table automatically, through the printer printing |
| Control system | 5.7inch color touch screen, PLC from Japanese Panasonic, SCM, 16 bits high-performance AD transform etc |
3.Standards
According to the clause 9.6 & 9.7 of UL1685-2007, UL2556-2007
Post time: Nov-19-2019