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Arc Resistance Tester NDH-15K
NDH-15K Dive into the world of precision with our Arc Resistance Test System, designed to cater specifically to the rigorous testing of electrical insulation materials. This high precision equipment stands as a beacon of excellence in the field.,it's san ideal choice for analyzing electric insulation materials, including plastics, films, resins, mica, ceramics, glass, insulating paints, and other insulating materials for superior arc resistance evaluation, it also serves as a vital tool in product testing and the research of new materials' electrical properties.
Our insulation materials boast exceptional resistance to degradation from high-voltage arc activity. Typically, a standard arc flame induces carbonization on the material's surface until it becomes conductive. The time taken for the arc to cease is measured in seconds. By employing two tungsten electrodes spaced at a specific distance on the sample plate, initially, the arc is intermittent. It then gradually shortens, culminating in a continuous arc with increasing current. The material undergoes progressively harsh arc conditions, ultimately leading to failure. Arc resistance is crucial for insulating materials in high-voltage switches or low-voltage high-current switches, as these are frequently subjected to arcs during operation. Only materials with exceptional arc resistance are viable choices.
When used inside electrical and electronic devices, insulating materials exposed to high-voltage, low-current arc discharges exhibit distinct variations in surface damage near the arc. Such discharges result in localized thermal and chemical breakdown and corrosion, eventually forming a conductive pathway on the material. Upon forming a conductive channel, the material is deemed to have failed the test.
The Arc Resistance Tester aligns with standards such as GB1411, IEC61621, ASTMC495, UL746A, serving as an indispensable instrument for simulated safety testing procedures.
Crafted according to stringent standard requirements, the arc resistance tester incorporates detailed electrical schematics and precision electrodes.
| Arc on/off time error | All program segments are superior±1ms | Voltage regulator capacity | 1kVA |
| Rated test voltage | 12.5kV | Maximum test voltage | 15kV |
| Electrode pressure on sample | (0.5±0.05)N | Electrode material | Tungsten bars |
| Test voltage accuracy | <1.5% | Current measurement accuracy | <1.5% |
| Distance between electrodes | (6.35±0.1)mm(IEC) (6.0±0.1)mm(ASTM) | Ambient temperature | (23±2)ºC |
| Ambient humidity | (50±5)% | Power supply | 220V±5% 50Hz 10A |
| Program segment | Arc current mA | Arc on&off time /s | Duration of each program segment/s | Total test time/s | |
| IEC 61621 | ASTM D495 | ||||
| 1 | 10 | 1/8son 7/8s off | 1/8son 7/8s off | 60 | 60 |
| 2 | 10 | 1/4s on 3/4s off | 1/4s on 3/4s off | 60 | 120 |
| 3 | 10 | 1/4s on 1/4s off | 1/4s on 1/4s off | 60 | 180 |
| 4 | 10 | Continuous power on | 60 | 240 | |
| 5 | 20 | Continuous power on | 60 | 300 | |
| 6 | 30 | Continuous power on | 60 | 360 | |
| 7 | 40 | Continuous power on | 60 | 420 | |
Note:Ensure all instruments and equipment are properly grounded, with grounding resistance maintained at ≤4Ω. ,The Supply and Demand parties concur that the supplier is responsible for providing technical specifications while the demander is tasked with establishing their own grounding system.
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