High voltage laboratory can perform Power Frequency Voltage flash over / withstand test for both dry and wet conditions as per the specifications.
Thermal Mechanical Test
The Thermal Mechanical test setup is a low / high temperature chamber operating between -40°C to +60°C with Microprocessor Controller and Computer interface. A Hydraulic system with power pack of 20 Ton capacity loading arrangements is provided to the chamber to conduct the design tests on Insulator as per IEC – 61109
Test for Curing Characteristics of polymer Compound
Sample from each batch of high performance polymer compound is tested in ODR to get full spectrum of curing characteristics at a particular temperature.
To ensure the product durability and mechanical strength, Goldstone has a specially designed Universal Testing Machine of 600 kN (60 Ton) capacity with tensile clearance of 1800 mm and computer interface. All the insulators can be tested as per IEC-61109 and tested for customer’s requirements of mechanical strength.
Mechanical & Physical Tests on our Silicone Compound
• Tensile Strength
• Elongation at Break
• Tear Strength
• Specific Gravity
Study of process ability and Curing Characteristics at a particular temperature with the help of Oscillating Disc Rheometer
The report from this study helps us to know the processing characteristics and total spectrum of curing characteristics of our Silicone rubber compound, which in turn guide the production department to maintain consistent quality
Electrical Tests on our Silicone compound
• Volume Resistivity
• Break down Voltage
• Tracking and Erosion Resistance Test
Resistance to Corona
Here a cured sheet from our Silicone compound is put in a cell under corona generating electrodes, thereby exposing the Silicone rubber under corona. In this test the Silicone rubber is subjected to combined stress from electrons, ozone, UV and high temperature simultaneously.
UV Resistance Test (ASTM G53)
We are equipped with the facility for exposing the vulcanized sheet made from Silicone rubber to UV light (315 nm) and dry heat simulating normal day condition.
Test for Hydrophobicity
We have sophisticated camera based instrument for measuring contact angle of liquids on solids. This instrument is interfaced to PC. Liquid drop shape analysis makes the instrument an error free. By measuring contact angle, we can assess the state of hydrophobicity character of Silicone rubber under various conditions.
Facilities available for carrying out different tests on FRP rod & Viscosity of Resin Mixture
Measurement of viscosity of epoxy mixture in the impregnated bath is very important, as the viscosity of resin mixture will control the impregnation of the bunch of glass fibers. Our quality control department in their process control collects samples from resin bath time to time and checks the viscosity and gives their feedback to the production department to maintain the required viscosity.
We have the facility for measuring glass content in FRP rods. Our Quality Control department collects the samples time to time from production line and measures the glass content.
Dye Penetration Test
It is one of the very basic tests to assess the quality of the FRP rod. We regularly carry out this test on our FRP rod.
Water Diffusion Test
This is a critical test for FRP rod. Though it is quite time consuming, we are carrying out this tests on our FRP rod on regular basis.
Besides the above-mentioned tests, we carry out the following tests regularly on our FRP rods:
Water absorption test
All these are to convey that we understand the importance of role of composite insulators in power transmission and the importance of their long term uninterrupted performance. We believe a thorough testing of components and in-process can ensure the quality of this new generation product to give service for years together.