The European Commission and The European Cable Industry (EUROPACABLE) are finalising Classification criteria for evaluating electric cables throughout Europe under the Construction Products Directive (CPD). The Classification utilises the results obtained from traditional IEC 60332-3 test equipment fitted with heat and smoke release measurement instrumentation. The former is calculated by continuous measurement of the oxygen consumed and carbon dioxide generated in the combustion process. The basis of the new test protocol was developed by FTT’s Andrew Green with colleagues from SP (Sweden), ISSeP (Belgium), CESI (Italy) and Interscience (UK) as part of an EC-funded FIPEC project. This project was managed by FTT director Stephen Grayson.

Modifying Existing IEC 60332-3 Apparatus To Measure Heat Release
Conversion of the existing IEC 60332-3 apparatus to measure heat release is accomplished by fitting a small instrumented section of ducting into the exhaust system of the rig and using this with the associated FTT gas analysis instrumentation and software and a modified test protocol. The duct section houses all gas sampling probes, temperature and mass flow probes needed, and the smoke measuring system.

ガス分析器
These are housed in a 19″ instrument rack containing:

• 酸素濃度計(常磁性)。主要な熱発生測定のための温度供給と圧力補正。
• 熱発生測定で使用する二酸化炭素アナライザー(赤外線)
• Dual-stage soot filter, refrigerant cold trap, drying column, pump and waste regulators for conditioning the sample gases prior to analysis
• 煙測定システムの制御装置(ご購入済みの場合)
• データロガー(ご購入済みの場合)

Clients already owning the FTT Dual Cone Calorimeter, ISO 9705 Room Corner test or SBI can use their existing instrumentation to measure the heat release rate from their IEC 60332-3. Alternatively, the IEC Gas Analysis rack can be used to instrument other calorimeters (e.g. FTT Dual Cone Calorimeter etc.).

煙測定システム
FTTは、発煙性測定の標準規格に適合する、レーザーあるいは白色光システムを提供しています。このレーザーシステムは、コーン熱量計で使用されるものと同様で、ISO 5660に適合し、高度な騒音低減機能が組込まれています。白色光システムは、SBIテストで使用されるものと同様で、DIN 50055に適合します。