Wire and cable resistance trace testing machine

The wire and cable resistance test machine is suitable for testing the ability of wires and cables to withstand damage caused by surface leakage of electricity under polluted conditions. Complies with the requirements of GB/T 3048.7-2007 and GB/T 14049-2008, Article 7.9.10.
Scope of application: Suitable for testing the ability of wires and cables to withstand damage caused by surface leakage of electricity under polluted conditions.
Compliance with standards: In accordance with the requirements of GB/T 3048.7-2007 and GB/T 14049-2008, Article 7.9.10.
Performance parameters:
Output voltage (test voltage): 100V~AC5kV, can be set arbitrarily. Accuracy:<± 3%;
● High voltage side current: ≥ 1A to meet the leakage current requirements during testing;
● Test transformer power: 5kVA;
Circuit breaker sensitivity: Automatic circuit breakers are used to protect transformers, but when the instantaneous current flowing through the high-voltage side reaches (1.0 ± 0.1) A, the circuit is disconnected within (50-250) ms time;
● Voltage display: Using voltage module output, the touch screen displays the current test voltage with an accuracy of 0.5 level;
● Grasping of test current and leakage current values: The current module is used to collect the leakage current with a sensitivity of ms level. The touch screen displays the current test current with a display accuracy of 0.5 level;
● spray equipment: number of nozzles: 2; Spray nozzle travel: ≥ 1 meter; The nozzle is about 700mm above the ground and 500mm away from the sample, with its axis forming a 45 ° angle with the sample axis; Spray speed: about 3m/s; Spray volume: 0.5 ± 0.1mm/min; Before the test, use a collecting tray to verify the amount of spray; Spray cycle: the spray time is 0.1~99.9S, and the intermittent time is 0.1~99.9S; Spray cycle: 1~999999 times can be set arbitrarily; Spray, intermittent, spray cycle, programmable, arbitrary set data, automatically stop when reaching the set value. Display as LCD liquid crystal display.
● Electrode connection: the high-voltage end is connected to the wire core, and the low-voltage end is connected to the copper wire on the surface of the sample;
● Test chamber volume: ≥ 1m3;
Test fluid: A liquid containing approximately 0.2% chemically pure sodium chloride and 0.1% surfactant in 1L of water, with a conductivity of (3000 ± 400) us/cm.