I. Purpose: 
This machine is applicable to various materials such as wires, leather, plastics, rubber, fabrics, and their characteristics before and after heating. For wires, to maintain fresh air inside the box during heating, a specially designed air exchange adjustment device has been developed. This testing machine features a precisely designed air replacement adjustment device, as well as digital voltmeters, ammeters, watt-hour meters, and timers, which can be used to measure the air replacement rate. The horizontal forced air circulation system and the airflow adjustment plates on both sides of the interior ensure uniform and stable internal temperature of the testing machine. 
II. Execution Standards: 
This instrument is designed in accordance with the requirements of UL1581 sect 420.9, ASTM-D2436, CNS3556, CNS742, JIS7212, JIS B7757, GB, and VDE test standards. 
III. Usage Conditions：
1.Power Supply: Three-phase four-wire 380V AC 50Hz
2. Ambient temperature: 5 - 35℃
3. Environmental humidity: ≤ 85% R.H
IV. Performance Indicators：
1.Power Supply: AC 380V three-phase four-wire system
2. Power: 6.0KW
3. Temperature range: Normal temperature +10℃ to 300℃
4. Control accuracy: ±0.5℃
5. Accuracy: 0.1℃
6. Distribution error: ±2.5℃
7. Heating time: From room temperature to 300℃, approximately 40 minutes.
8. Machine Structure and Materials:
9. Inner box dimensions: 500*400*500mm
10. Outer box dimensions: 1200 * 650 * 1340 mm