Nederman HV Control Panel EX Series - Motor Protector Settings

HV Control Panel
13
EN
Alternave Seng Default (x) Parameter Customer Seng
-20V,(0V),+20V SupplyvoltageCable(004)
1-1,6A PrimaryAutoFuseF2Seng A
5.4.8 Motor Protector (F7) Sengs
ThiscontrolpanelstartsthemotorwithaY/Dstarter,whichmeansthatthemotorstarts
inYmodewithreducedvoltageonthewindings.Aconsequenceofthelowvoltageisthe
torqueisalsoreduced.Thismeansthatthesizeofthemainfusedoesnotneedtobeasbig
asinaDOLstarter.
TosettheMotorOverloadProtector,ndtheMotorRatedLoadCurrent.ThisdataID
isalreadycollected,seeTable 5-4: VAC/RBU Motor Data.Ifthisdatahasnotbeennot
collected,itcanbefoundontheMotorMarkingPlate.
Example of how to calculate the motor protecon current seng.
Onthemotormarkingplateatleasttwo-amperevaluesareavailable,one(Y)Star-running
mode,andonefor(D)Delta-runningmode:
Motor
XXXXX - XXXX XXXX
Typ XXXX
3 - Mot. Nr. XXXXX-XX
∆ Y 400/690 V 63,0/36,5 A
S1 37 kW cos φ 0,91
2970 rpm 50 Hz
Iso. KL F IP 54 t
Y/D=Y/∆ (∆/Y400V/690VD/Y->63,0/36,5A)
Withthismotor,theNominalPowersupplyVoltageis400V;itisthesamevoltageasin
∆Delta-runningmode=400V.
Ratedloadcurrentis=∆Delta-runningmodecurrent=63A.
(D)Delta-runningmode->400V->63A.
(Y)Star-runningmode->690V->36,5A.
Motorprotector(F7)seng=63,0x0,58=36,54or36,5A.
Checkyourcalculaonbycomparing,(Y)Star-runningmodecurrent=36,5Awithyour
calculatedMotorprotector(F7)sengvalue=36,54A,ithastobemoreorlessequal.
Table5-6:MotorProtector(F7)Sengs
Tripp Class
(10),15,20
Reset (Manual)/Auto 37kW 9-45A 45-55kW 18-90A Customer Seng
10 Manual
Default=9 Default=18
Power supplies Motor
380V50/60Hz MotorvoltageStar/DeltaY690V/D400V
400V50Hz MotorvoltageStar/DeltaY690V/D400V