Products
SIGMA – Efficiency On-line Monitoring Sub-system Cooling System Efficiency
Appropriate cooling of a transformer is fundamental for its safe operation to prevent the acceleration in the loss of useful insulation life, in the presence of high loading. Therefore, it is essential that the natural and forced cooling equipment, such as radiators, fans and oil pumps, should be in perfect working order, efficiently dissipating heat…
SIGMA – Fan On-line Monitoring Sub-system Assistant for Maintenance of the Cooling System
Adequate cooling of a transformer is fundamental for its safe operation and the prevention of accelerated aging and reduction in the useful insulation life under high loading. Thus, it is essential that the forced cooling equipment, such as fans and oil pumps, function perfectly. The total or partial failure of the cooling equipment can activate…
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…
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…
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…