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Technical DataREG-DA

REG-DA REG-DA

a-eberle

REG-DA REG-DA

a-eberle

SERVICEBLOCKED SERVICEBLOCKED

F3F2F1F4F5 F3F2F1F4F5

AUTO AUTO REMOTE REMOTE ESC ESC MENU MENU AUTO AUTO REMOTE REMOTE ESC ESC MENU MENU LOCAL LOCAL LOCAL LOCAL ACK ACK ACK ACK

Statistics mode

In the statistics mode, all switching operations of the tap changer are registered. A differentiation is made between switching operations under load and switching operations without load.

Transformer monitoring mode TMM

In the monitoring mode, the basic parameters of the transfor- mer are monitored. The oil temperature can also be recorded in addition to the tap changer statistics. In accordance with IEC 354 (VDE 0536/3.77) the hot-spot temperature is determined on the basis of the oil temperature and the winding current and subsequently extrapolated to determine the residual lifetime of the transformer. Fans can be set to one of six levels and an oil pump can be used to regulate the temperature. Furthermore, the oil levels can be monitored and the operating hours of the fans and the pumps can be counted. The regulator is equipped with a mA input as standard.The temperature can be received as a mA signal by an upstream temperature measurement transducer using this input.If other combinations are required, e.g. temperature as a direct PT 100 connection and hot-spot temperature as a mA output, the desired combination can be selected from the “E” and “C” groups of characteristics. Additionally, a record is kept for every single tap in tabular form. How many tap changes have been carried out during which time period and how often each tap has been selected can be checked using these data. This information can be used to optimise the regulator settings. The saved statistics values can be selected using the key- board or loaded and printed using WinREG. The fi gure shows the two transformers T1 and T3 working on busbar “a”, while transformer T2 feeds off busbar “b”. REG-DA REG-DA

a-eberle

SERVICEBLOCKED

F3F2F1F4F5

AUTO AUTO REMOTE REMOTE ESC ESC MENU MENU

REG-DA REG-DA

a-eberle

LOCAL LOCAL

SERVICEBLOCKED

ACK ACK

F3F2F1F4F5

AUTO AUTO REMOTE REMOTE ESC MENU MENU LOCAL LOCAL ACK ACK

ParaGramer mode

The PARAGRAMER is a support tool for the automatic pre- paration of parallel connections and the online display of the switching statuses. The artifi cial word PARAGRAMER is a combination of the two terms para llel and one-line dia gram .The PARAGRAMER shows the switching status of the indi- vidual transformers in a one-line diagram. The function is activated by feeding each regulator with a complete busbar replica (position of circuit breakers, discon- nectors, bus ties and bus couplings). Based on the switching states of all regulators involved in the parallel connection, the system autonomously detects which transformer is to work with which other transformer(s) in parallel connection on a busbar. Busbars that are connected via bus coupling(s) are treated as one single busbar by the system.

3A. Eberle GmbH & Co. KG