WHAT IS SMOOTHING REACTOR

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                         SMOOTHING REACTOR(SL)

In WAP4 locomotives "SL" are used to get fine DC voltage from SILICON RECTIFIRE(RSI). SL-30 type smmothing reactor rating-- 1250 V and 1350 A . In locomotives 2nos. of SL used for two nos. of BOGIES. Each SL has a motor(MVSL). Any how if high voltage comes and passes through SL circuit for that safety perpous 2nos. of relay provided namely QVSL. For control HVSL 1 and HVSL 2 switches are provided in switch board. Term 'H' indicates PROGRAM SWITCH. This HVSL switch has 4nos. of position, i.e '0','1','2','3' . Position no. '0' indiactes motor(MVSL) Is deactive, Position no. '1' indicates relay & motor both are working, Position no. '2' indicates only relay working, Position no. '3' indicates relay bipas .

CIRCUIT DIAGRAM :-

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