MEC 320 GENSET CONTROLLER
PM079 Rev 0 07/06/08 50 Thomson Technology
6. Additional functions
This chapter describes the additional functions.
Short time parallel
The purpose of the
short time parallel
function is to be able to define a maximum paralleling time
between the generator and the mains supply.
The function is typically used, if there are local requirements to maximum allowed paralleling
time.
The diagram shows that when the generator breaker is synchronized, the mains breaker will be
opened automatically after a time delay (t). Later the mains breaker is synchronized, and the
generator breaker is opened after the time delay (t).
The time delay is measured in seconds and can be adjusted from 0.10 to 99.90 seconds.
The short time parallel function is set up in 2700 Short time paralleling.
The short time paralleling function is only available in the automatic mains
failure and load take over gen-set modes.
MB
GB
t
t
t
The same time delay is used for both generator and mains breaker
synchronization.
The time delay typed in the set point is a maximum time. This means that if 0.10
seconds are used, the two breakers will never be closed at the same time for a
longer delay than the set point.
Summary of Contents for MEC 320
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