Thermal faults are detected by the presence of by-products of solid insulation decomposition. The solid insulation is commonly constructed of cellulose material. The solid insulation breaks down naturally but the rate increases as the temperature of the insulation increases. When an electrical fault occurs it releases energy which breaks the chemical bonds of the insulating fluid. Once the bonds are broken these elements quickly reform the fault gases. The energies and rates at which the gases are formed are different for each of the gases which allows the gas data to be examined to determine the kind of faulting activity taking place within the electrical equipment.
When ordering a demo pump, customer must indicate which pump is for demo use. If this is not indicated, and we had charged customer's credit card account, customer will be liable for cancellation fee. Customer must contact New Era Pump Systems, Inc. within 10 days of receiving pump and inform us if the pump will be kept or returned. Up to 20 days, the product can be returned with no restocking fee. After 20 days and up to 40 days, there is a 25% restocking fee for all returns. After 40 days we reserve the right to refuse returns. Only pumps we manufacture are available for demonstration. For International demo pumps, please contact your local distributor.