General Information
In case of burning of conventional plastic-cables, e.g. with PVC insulation and sheath, huge quantities of corrosive and toxic gases will be generated. Considerable damage of persons (respiratory tract, poisoning) and real values (corrosion) is not to rule out. The object must be, to minimize the damage and the resulting costs of a fire.
1. Determination of the amount of halogen acid gas, HCL-Emission. (IEC 60754-1)
This test specifies a method for the determination of the degree of acidity of gases evolved during combustion of cables by measuring pH and conductivity. The performance requirement of this standard state the weighted pH value should not be less then 4.3 related to 1 liter of water and the weighted value of conductivity should not exceed 10 µS/mm. Determination of the amount of halogen acid evolved during the combustion of each combustible material of a cable. For materials, which contain less than 5 mg/g (0,5 %) of halogen acid, the test procedure acc. to IEC 60754-2 is recommended.
Note:
Note:
This test doesn‘t show, whether a material is zero
2. Determination of degree of acidity of gases, measuring the pH-value
and conductivity. (IEC 60754-2)
and conductivity. (IEC 60754-2)
performance requirement of this standard state the weighted pH value should not be less then 4.3 related to 1 liter of water and the weighted value of conductivity should not exceed 10µS/mm. Determination of degree of acidity of gases evolved during the combustion of materials taken from electric cables by measuring the pH-value and conductivity. Limit values (depending on standards):
Kind of test using the equipment:
- Acid Gas Emission Test (IEC 60754-1)
- Measurement pH & Conductivity (IEC 60754-2)
Technical specifications
- The control cabinet that adopt procedure controller to control heating velocity
- The folio heating furnace and quartz glass tube (include the organization for send to
material) The gas prepares processing device The 500 ml gas washing bottles
absorb device and conjunction head (include mixer).
- The PH meter and conductivity measurement device.
- The device for joining quartz glass tube takes down convenient so testing samples
is removed easily micro-flow can be controlled and background pressure can be
adjusted so to promise air flow satisfy the request of standard.
- The PH meter and conductivity measurement device are highly automated and
operate easily.
