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(+420) 602 141 834
The company TRAFOP-CZ, Ltd. offers delivery and installation of a monitoring system.
monitoring of levels of:
in the transformer oil filling
Hydrogen is produced to a greater or lesser extent by all transformer faults. Calisto 2 measures dissolved hydrogen continuously and accurately. Even at the earliest stages of fault development, both thermal and electrical stresses on transformer oil will generate dissolved hydrogen. Such highly mobile hydrogen is quickly distributed throughout the oil, providing an early and reliable fault signature. Calisto 2 excels at timely and accurate low-level hydrogen measurements. When installed on your critical transformers, Calisto 2 provides the earliest possible fault detection, and allows accurate real-time monitoring of subsequent fault evolution.
Insulation integrity is vital to your transformer’s operation. Moisture build-up and transformer overheating are two conditions which may lead to irreversible insulation degradation. Carbon monoxide is a by-product of cellulose degradation; anomalous amounts of carbon monoxide may be generated when localized cellulose overheating occurs. Calisto 2 provides a dependable measurement of the CO baseline, and will alarm on a sudden increase of CO concentration. Timely follow-up with laboratory DGA and furan analysis will enable early detection of accelerated aging of solid insulation, before significant and irreversible damage is incurred. In combination with polar products and acids, moisture can significantly affect the dielectric properties of insulating fluids and materials. Engineered for reliability, Morgan Schaffer’s solid-state moisture-in-oil sensors deliver exceptional accuracy when compared against laboratory measurements and moisture-in-oil standards.
Precision temperature measurement and proven conversion algorithms are used to report moisture content in parts per million (ppm), %RS at 25°C or %RS at a specific transformer temperature.
Oil temperature variations compromise the accuracy of on-line gas measurements. Gas solubilities and diffusion rates vary significantly with temperature, and the variations depend on oil type, age and purity.
Calisto 2 eliminates the impact of oil temperature variations by heating or cooling the oil to a precise standard temperature. This enables concentration measurements of unequalled sensitivity, stability and accuracy.
Morgan Schaffer’s proprietary second-generation gas measurement cell sets a new standard for accuracy and low-level measurements of both H2 and CO in transformer insulating fluids. Every Calisto 2 monitor is calibrated using certified gas mixtures traceable to NIST and Morgan Schaffer’s IEC/ISO 17025 certified oil-testing laboratory.
For reliable readings and fast response to transients, Calisto 2 continuously draws representative oil from the transformer using an internal electromagnetic pump with an outstanding reliability record. An oil flow monitoring system ensures adequate flow is maintained at all times.
Investing in a Calisto 2 will substantially reduce operating costs: