electrical safety test equipment, environment test equipment, test probes, go not go gauges

  High voltage tracking test apparatus and tracking index test apparatus are both test equipment used to test certain physical properties of insulating materials, but the physical properties tested by the two equipment are different, therefore, the test standard base on the two equipment are also different, the following are the main differences between the two equipment.   1.  Definition The high-voltage tracking tester is to simulate the power frequency (48Hz-62Hz), using liquid pollutants and inclined specimen to evaluate the resistance to tracking and corrosion of electrical insulating materials under severe ambient conditions. The electrical tracking refers to the continuous deterioration of the solid insulating surface due to the discharge of a local area and the formation of conductive or partial conductive channels.   The tracking index test apparatus is to simulate the conductive substances deposited on the surface of insulating material caused by diffe...

UL746A High Current ARC Ignition Test Apparatus 32.5A/COSφ0.5   1.  Introduction: The high current arc ignition tes t apparatus is designed according to  IEC60950-1:2001  clause 4.7.3.6 , BS/EN60950-1:2001, BS7002:2001, GB4943-2001 and UL746A, IEC60947.1:1999, GB/T14048.1-2000, IEC730.1:1993, GB14536.1-1998 and etc..  It ’ s used to measure and assess  solid insulating material against to resistance to ignition from arcing electrical sources. A power 240V(AC)/60Hz is to be supplied to the test electrodes  (fixed electrode and movable electrode) , a series (inductive-resistive) air core impedance is to be provided to yield a short circuit current of 32.5A and a power factor of 0. 5. The sample is be to positioned with the electrodes making initial contact on the surface of the sample, the circuit is to be energized and the cyclic arcing started. The timing of arcs is to be adjusted to a rate of 40 arcs/min, the rate of electrode separation is to be 254±...