Insulator Salt Density Tester
The insulator salt density tester, also known as the direct-reading equivalent salt deposit density (ESDD) tester, is specifically designed for testing the equivalent salt deposit density of insulators. The system incorporates a built-in calculation formula for insulator equivalent salt deposit density, providing intuitive readings. It features a rotary mouse for simple operation. The instrument comes with a built-in micro printer for convenient data retention and comparison. A large LCD screen displays all parameters and results at a glance. Equipped with a high-capacity lithium battery, it is suitable for field testing. The instrument complies with the provisions and requirements of GB/T 16434—1996 "Environmental Pollution Classification and External Insulation Selection for High-Voltage Overhead Lines and Power Plants, Substations," and is applicable for salt density testing of external insulation equipment in high-voltage overhead lines, power plants, substations, and other locations.
Reference Standards;
GB /T 4585-2004/ IEC 60507 :1 991 "Artificial Pollution Tests on High-Voltage Insulators for AC Systems"
GB/T 16434—1996 "Environmental Pollution Classification and External Insulation Selection for High-Voltage Overhead Lines and Power Plants, Substations"
GB 311.1—83 "Insulation Coordination for High-Voltage Transmission and Transformation Equipment"
GB/T 5582—93 "External Insulation Pollution Classes for High-Voltage Power Equipment"
Terminology Explanation;
Equivalent Salt Deposit Density: Refers to the solute density of a sodium chloride solution equivalent to the conductivity of the pollution liquid, usually expressed in kg/m³.
Creepage Distance to Voltage Ratio of Insulator: The total creepage distance L of the insulator divided by the product of the test voltage and the factor; it is usually expressed in mm/kV.
Pollution Layer: The conductive electrolytic layer on the surface of the insulator composed of salt and inert materials.
Salt Deposit Density (SDD): The amount of salt deposited on a given surface of the insulator (metal parts and cemented materials are not included in this surface) divided by the area of that surface; it is usually expressed in mg/cm².
Performance Specifications;
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Measurement Range |
Salt Density |
0.0001~9.9999 mg/cm² |
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Temperature |
0~100 ℃ |
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Conductivity |
0~100000 us/cm |
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Measurement Accuracy |
Salt Density |
Resolution 0.001 digit, full-scale accuracy better than ±1% |
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Temperature |
Resolution 0.1 ℃, accuracy ±0.5 ℃ |
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Conductivity |
Resolution 0.1 us/cm, full-scale accuracy better than ±1% |
