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43pd motor cam switch is equipment to supply electric voltage for control to protection relay, meter ,control |
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power voltage, etc. due to automatic transference of bus in accordance with connection state of 2nd voltage |
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of bus p.t in substation double bus structure. 43pd moter cam switch protects occurring malfunction |
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of equipment in case of manual transference of 2nd voltage. |
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this equipment applies for auto-control and scada of efficient application of total protection control system. |
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* applying place of protection relay * - protection panel for t/l railway line) - protection panel for bus) - protection panel for u.f.r) - system voltage of requiring transference of p.t) - protection panel for m.tr 154/23kv) | | |
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contact rating |
250v, 20a |
maximum rating voltage |
600v |
dc open-close volume |
dc 125v, 20a (50ms) |
control power voltage |
dc 125v (range of using voltage : dc94v ~ dc 156v) |
operating electric current |
below 1.0a |
transference speed |
after inputting external signal, bus is changed a -> b or b ->a transference time of p.t voltage perfectly is within 2.5sec. in case of supplying rating control voltage dc 125v |
time of transference current |
after operating switch, bus is changed a -> b or b ->a transference time of no p.t voltage perfectly is within 2.5sec. in case of supplying rating control voltage dc 125v |
insulation resistance |
above 50m Ω |
mechanical life time |
above 200,000 times (after operating 1 time, equipment is stopped 5 seconds) | | |
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manual control | |
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in case of field test or manual operation requested, pull the handle at pull-out position (manual |
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operation position) then enable to operate manually |
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enable to do manual control regardless of contact position of related aux-s/w for remote signal |
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lighting green led lamp using for indicating manual operating position) |
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pushing the handle forward at pull-in position (automatic operating position) then led lamp is |
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changed to red lighting and operated as automatic control | |
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automatic control | |
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using it connected with bus aux-s/w contact as below 43pd connection diagram (drawing1) |
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when bus aux-s/w is transferred then transferred automatically to (a-b bus) appropriate bus(b bus) |
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unable to operate at bridge position where bus aux-s/w putted into simultaneously and enable to |
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operate as bus aux-s/w transference completed. |
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operated automatically only at pull-in position (automatic operating position) pushing front handle forward | |
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remote control | |
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using contact of remote control after connecting as below 43pd connection diagram (drawing2) |
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remote control signal uses three contacts such as a-bus, b-bus, off) |
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enable to operate at automatic control position (pull-in position) and unable to operate at manual |
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control position (pull-out position). | |
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automatic/remote control | |
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using it connected as below 43pd connection diagram (drawing3)) |
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motion form of automatic control is same as motion form of remote control) | |
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built-in remote control method | |
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pull in the cam switch handle then supply control power voltage to 19 and 20 terminal. at this moment, |
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check whether green color of led is changed to red color of led pushing handle out after lighting |
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confirmed) |
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check remote control pushing handle in center as off position) |
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check whether the switch handle moves into b-bus when supplying dc+ to no.5 terminal block of cam |
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switch) |
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check whether the switch handle moves into a-bus when supplying dc+ to no.7 terminal of cam switch) |
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check whether the switch handle moves into center position (off) when supplying dc+ to no.9 |
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terminal of cam switch. | | | |
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ys ft-1 | |
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¡ø note |
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1. contact composition of dc lock is possible to be different according to 43pd model |
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2. 43pd contact composition is basic contact composition |
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3. it is able to operate manual control and field test only in case of pulling front handle out | | |