Hot Set Apparatus (Dial Gauge Model)

Laboratory Hot Set Test Apparatus is designed to determine the elongation & permanent set of insulation of armored and unarmored single, twin, three , four and multi-core cross linked Polyethylene (XLPE) insulated & PVC sheathed cables for electric supply and control purposes under specified conditions of load temperature and air flow.

Laboratory Hot Set Test Apparatus is designed to determine the elongation & permanent set of insulation of armored and unarmored single, twin, three , four and multi-core cross linked Polyethylene (XLPE) insulated & PVC sheathed cables for electric supply and control purposes under specified conditions of load temperature and air flow, as specified in IS: 7098.

The instrument conforms IS 7098 (Pt.1, 2 & 3), IS: 10810 (Pt.30)

     A double walled cabinet with inside chamber of stainless steel

    Inner dimensions of the chamber are 30 cm x 50 cm  20 cm (W x H x D).

    Full view glass Door to observe the specimen under test.

     Temp. Range 250 ± 2oC. at sensor point. 

    The oven is designed to give 8 to 20 air changes per hour.  

    An air flow meter (Rota meter) is fitted to control and monitor the airflow rate. Range 0- 10 LPM, LC-0.5 LPM

    Grips are provided at the top of the oven to hang specimen/s.

    Suitable weights up to 1 kg are provided with provision to attach the weights to one end of the test pieces.

    Two Dial Gauges with 50 mm travel are provided for elongation measurement

    Metallic arrows are attached to facilitate the operator to take exact reading of the sample elongation.  

    A blade is provided in the oven to cut the sample to remove the tensile force without opening the door.

The sample is hanged using the grips inside the Hot Set Oven along with the weights for 15 mins. The sample starts to elongate due to heat. The elongation of the sample is measured using Dial Gauges. The sample is then cut to evaluate the permanent set.