With the continuous development of the power system and the expansion of the application field, higher requirements are put forward for the safety performance of the wire and cable. In the event of fire, the fire resistance of wire and cable is particularly important. In order to evaluate the performance of wire and cable under fire conditions, the fire integrity testing machine of wire and cable developed by Jiangsu Feierman has become an important tool to ensure the safety and reliability of cables.

The wire and cable fire integrity testing machine is designed and manufactured according to the international standards IEC 60331 Part 11, IEC 60331 Part 21 and GB/T 19216 and other related standards. This ensures that the design of the testing machine is synchronized with the international level and can meet the needs of fire resistance testing of various wire and cable products.

Advanced design and construction

The testing machine adopts stable steel structure box and frame structure, and the appearance is generous and beautiful. The combustion device and control box, gas distribution cabinet and distribution cabinet are designed separately, which is not only convenient for the laboratory to manipulate, but also improves the safety of the equipment. The heat source adopts a ribbon propane burner burner with high efficiency combustion performance. The design of the combustion holes is staggered, and the height of the burner can be adjusted up and down to meet the test needs of different wire diameter samples.

Accurate test parameter monitoring system

The testing machine is equipped with advanced monitoring and control systems such as thermocouple, pressure gauge, pressure regulating valve and solenoid valve. The thermocouple was mounted horizontally on the left and right sides 45mm away from the center line of the burner to check that the flame temperature was within 750±50 ° C. At the same time, it is equipped with MFC or high-precision rotor flow meter to ensure that the gas is fully mixed to meet the combustion demand. The pressure gauge and pressure regulating valve can accurately control the gas pressure, and the solenoid valve ensures the safety of gas on and off.

Flexible test operation mode

The testing machine has two modes of operation, manual mode and automatic mode. The manual mode can be controlled by the panel, while the automatic mode is guided by the computer and professional software. This design makes the experiment operation more flexible, which not only meets the operation needs of the experimenter, but also improves the automation degree of the experiment.

The comprehensive design of wire and cable fire integrity testing machine takes into account the safety, accuracy and operation convenience of the test. Through the test of the equipment, the performance of the wire and cable under fire conditions can be comprehensively evaluated, which provides reliable technical support for the application of the cable

IEC 60331-1 Tests for electric cables under fire conditions -- Circuit integrity -- Part 1: Test method for fire with shock at a temperature of at least 830℃ for cables of rated voltage up to and including 0,6/1,0 kV and with an overall diameter not exceeding 20mm.
IEC：IEC 60331-11&12：2002，IEC 60331-21~23：1999
IEC 60331 Test for electric cables under fire 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