Transformer Management & Control
SIGMA – Ageing On-line Monitoring Sub-system Insulation Ageing
Under normal operation conditions, a useful life of a transformer is principally determined by the life of its insulation. Whilst an aged insulation would not be directly responsible for ending a transformer’s working life, in the majority of cases, the deterioration of its mechanical properties increases the risk of failure in the presence of forces…
SS – Surge Suppression Module
The Surge Suppression Module or SS has the function to protect the service life of electronic equipment against transient voltage surges from external sources in an electric power substation. The external and internal transient voltage surges directly affect the performance and the service life expectancy of electronic equipment. Available to protect power supplies from 0…
SPS – Parallelism Supervisor
The Synchronous Parallelism Supervisor SPS is a device developed by Treetech for control and supervision of parallel operation of power transformers equipped with a load tap changer. The SPS incorporates functions of a range of equipment that, in the past, were used to control parallel transformers, such as position indicators, auxiliary relays for electro-mechanical logic,…
TI – Insulated Transducer
The Insulated Transducer (TI) is used inmonitoring and protection systems for power transformers and reactors. Its function is to convert analog signals from temperature sensors (RTD), position of taps (potentiometric transmitters of on-lap tap changers), or current loop (signals in mA) into output values proportional to the input values. In the case of a RTD…
TS – Temperature Supervisor for Oil-immersed Transformers
Thermal monitoring of oil-immersed transformers is essential for their safe operation. This is the case not only for large-scale equipment, but also for medium-sized transformers and distribution transformers, thus achieving maximum return from the investment in these assets without jeopardizing their life cycle. The Temperature Supervisor’s competitive cost allows the inclusion of thermal monitoring for…
DI – Digital Indicator
The digital indicator – DI is a microprocessor controlled unit for remote supervision of distinct transformer and power reactor variables. It is possible to measure up to 8 variables. For example, a DI can indicate various variables of one transformer: the insulating oil’s temperature and also the temperatures of 3 windings, oil moisture and oil…
PI – Tap Position Indicator
The Tap Position Indicator (PI) consists of a microprocessor based electronic device capable of monitoring and modifying, through the load tap changer (LTC), the positions of power transformer taps. The PI incorporates the functions of multiple devices that were previously used for controlling the transformers LTC, such as selector switches Manual/Automatic and Local/Remote, manual control…
RR – Rapid Auxiliary Relay
he function of the Rapid Auxiliary Relay – RR is to multiply a signal into several independent contacts without a substantial time delay in its transmission. The importance of the response time may be noticed, for instance, when the relay is used in protection systems for power transformers, where a small delay in the emission…
DTM -Temperature Monitor for Dry Transformers, Motors and Generators
Thermal monitoring of electrical equipment, such as dry transformers, motors, generators and others is essential in operating them safely, thus allowing maximum return from the investment in these assets to be achieved without jeopardizing their life cycle. The DTM Temperature Monitor has three temperature reading inputs (optional fourth input), allowing monitoring of multiple temperatures. A…