Iec 9 Lead Delta Motor Wiring Diagram

Table 5 motor lead connections 64 table 6 enclosures for non hazardous locations 99 table 7 enclosures for hazardous locations 99 table 8 conductor ampacity100 table 9 ampacity correction factors 101 table 10 adjustment factors 101 table 11 ratings for 120 240 v 3 wire single phase dwelling services101 table 12 awg and metric wire data 102.

Iec 9 lead delta motor wiring diagram. Nema nomenclature 9 leads wye connected low voltage only t1 t2 t3 t7 t8 t9 together motor leads 1237894 5 6 nema and iec nomenclature 12 leads single voltage or low voltage of dual voltage motors t1 t2 t3 t7 t8 t9 nema 1 6 2 4 3 5 7 12 8 10 9 11 iec u1 w2 v1 u2 w1 v2 u5 w6 v5 u6 w5 v6 terminal markings and connections part winding start. Delta 6 leads per. Triple rate motor connection. Each lead may have one or more cables comprising that lead.

Determining wye or delta connection for motors on delta connected motor lead s 7 8 9 1 4 5 2 3 6 have continuity with. In such case each cable will be marked with the appropriate lead number. For the delta start dual voltage nine lead motor on the lower voltage connect 1 6 and 7 to l1. They are some times located in the peckerhead or junction box on the motor.

Three phase motor wire connections first read the nameplate for wiring instructions. Connect 2 4 and 8 to l2. The advantage of the iec twelve lead motor is that you can change connections from parallel to series and from star to delta. Delta connection single voltage with current transformers la sc.

Single voltage wye connected with partial current transformer protection. Three phase see below single voltage. Motor wiring diagram 9 lead dual voltage wye connection part winding start pws on low voltage to reverse direction of rotation interchange leads l1 l2. Mode tart run wye double delta extended delta 1 2 1 3 3 open together nema nomenclature 9 leads wye connected low voltage only motor leads 1 2 3 9 nema and ec nomenclature 12 leads single voltage or low voltage of dual voltage motors iec wi v5v2 vi nema iec 12 1 9 4 nema 31 wi v2 ui 85 vi u2 7 12 u5 w6 8 10 v5 u6 9 11.

Motor connection diagrams full lecture jim pytel. Delta connection 9 lead vt 2 speed 1 winding single voltage. For the higher voltage connect 1 to l1 2 to l2 and 3 to l3. If needed refer to the information below.

In a nema motor there are 12 leads or coil ends internally but only nine are brought out. Wye start delta run or pws connection 12 lead single voltage. 6 lead y 6 lead delta 9 lead high voltage y 9 lead low voltage y 9 lead high voltage delta 9 lead low voltage delta 12 lead high. Connect 3 5 and 9 to l3.