gefran TPD32-EV-500 series - Page 482

—————— TPD32-EV ——————
482
Connection of current transducers and thermal switch(es)
ThesecondarywindingsofthetwoACcurrenttransducersandanythermalcircuitbreakers(bimetalthermostats)
onthepowerbridgesareconnectedtotheKPT31connector.Aspeciccablealreadyttedwiththerelative
KPT31connectorattheCUendandfreeconductorsattheotherendissupplied(“KPT31connectorinterface
cableforTPD32-EV-CU”,EAM2763).
Terminal Function Min. cable cross-section Max. cable cross section Tightening torque
1, 2, 3 * Connection of bimetal thermostats 0.25 mm
2
(24AWG) 2.5 mm
2
(12AWG) 0.5 …0,6Nm
5, 6, 7, 8 CT connection Recommended : 1 mm
2
(18AWG)
note ! IftheNCthermalcontact(bimetalthermostat)connectedbetweenterminals1and2isnot
used,thesemustbejumpered.Terminal3isalreadyjumperedinternallywithterminal2via
jumperS2ontheFIRXP-XXpowercard,asstandard.Terminal4isnotused.
Detailofconnectionofcurrenttransducers:
brown
blue
red
CT-U
CT-W
5678
KPT3
1
brown
brown
UWV
Twisted
wires
Twisted
wires
Connection of pulse transformers
TheprimarycircuitsofthepulsetransformersareconnectedtoconnectorKPT11(andKPT21,whereapplicable)
forswitchingtheSCRson.AspeciccablealreadyttedwiththerelativeKPT11connectorattheCUendand
freeconductorsattheotherendissupplied(“KP11connectorinterfacecableforTPD32-EV-CU”,EAM2764).
Fordetailsofwiring,seeESE5771showingtheconnectionofa4Qbridge(reversible).Witha2Qbridge,thetwo
conductorslabelled“MN”arenotused.Theirfreeendmustthereforenotbeconnectedbutelectricallyisolated.
Regulation power supply
AsfortheentireTPD32-EV-…series,theregulationpowersupplyisconnectedtoterminalsU2-V2onthe
FIRXP-XXpowercard.Toaccessthis,removetheplasticcoveratthebottom.
Thiscardalsocontainsterminals35-36,75-76and78-79whichhavethesamefunctiononallunitsintheTPD32-
EV-..seriesandhavealreadybeendescribedinchapter"4.4RegulationSection"onpage69.
Cablecross-sectionsandtighteningtorque
Terminal Function Min. cable cross-section Max. cable cross section Tightening torque
U2, V2 Regulation power supply
0.25 mm
2
(24AWG)
2.5 mm
2
(12AWG)
0.5 …0.6 Nm
35, 36 Contact OK Relay
75, 76 Relay 2 contact
78, 79 Motor thermistor