SAMI GS 5 Power Connections 5.1 Mains Cable SAMI GS is rated for a 380 V/400 V/415 V or 440 V/460 V/480 V/500 V 3-phase system. A 4-conductor screened cable (three phase with Protective Earth) is recommended for the mains cabling. The cables and fuses are to be dimensioned in accordance with the out- put current. See Table 5-1 for minimum di- mensions. When dimensioning cables, al- ways pay attention to local authority regula- tions. Note! Remove all the compen- sation capacitors from the line side so that they are not powered up at the same time as the SAMI GS. occurring in variable frequency motor drive systems. To avoid disturbances Install the motor cable away from other cable routes.
Avoid long parallel runs with other ca- bles (see page 20). Disturbances caused by radiation from the motor cable can be reduced by mounting chokes in the motor cable. These chokes may reduce the motor voltage and the maxi- The rapid voltage changes cause capaci- t ive current through the motor cable stray ca- pacitances. This current rises as the switch- ing frequency and cable length increase. 5.2 Motor Cable A 4-conductor screened cable is recom- mended due to the rapid voltage changes This phenomenon can cause substantially higher current measured by the SAMI GS than the actual motor current, and can cause overcurrent tripping. This means that when Table 5-1.
Mains & motor cables and fuse recommendations according to output current (I N , I NSQ ). Table 5-2. Maximum recomm. length of the motor cable in accord. with switching frequency. 16 Type ACS 501- I N (A) Fuse (A) Cu-cable (mm2) I N S Q (A) Fuse (A) Cu-cable (mm2) Max.
Cable (Cu or Al) (mm2) 004-3/005-5 005-3/006-5 006-3/009-5 009-3/011-5 011-3/(016-5) 016-3/020-5 020-3/025-5 025-3/030-5 030-3/(041-5) 041-3/(050-5) 050-3/(060-5) 060-3/(070-5) 6.2 7.5 10.0 13.2 18.0 24.0 31.0 39.0 47.0 62.0 (58.0) 76.0 (65.0) 89.0 (84.0) 10 10 10 16 25 25 35 50 50 63 80 100 3*1.5+1.5 3*1.5+1.5 3*1.5+1.5 3*2.5+2.5 3*6.0+6.0 3*6.0+6.0 3*10+10 3*16+16 3*16+16 3*25+16 3*35+16 3*50+25 7.5 10.0 13.2 18.0 24.0 (26.0) 31.0 39.0 47.0 62.0 (58.0) 76.0 (65.0) 89.0 (84.0) 112 10 10 16 25 25 35 50 50 63 80 100 125 3*1.5+1.5 3*1.5+1.5 3*2.5+2.5 3*6.0+6.0 3*6.0+6.0 3*10+10 3*16+16 3*16+16 3*25+16 3*35+16 3*50+25 3*70+35 3*2.5+2.5 3*2.5+2.5 3*2.5+2.5 3*6.0+6.0 3*6.0+6.0 3*10+10 3*16+16 3*35+16 3*35+16 3*35+16 3*70+35 3*70+35 Switching frequency [kHz] 004...011-3/005...016-5 Screened Unscreened cable [m] cable [m] 016-3...020-3/020...025-5 Screened Unscreened cable [m] cable [m] 025-3...060-3/030-5...070-5 Screened Unscreened cable [m] cable [m] 1 75 12 100 100 150 50 75 200 250 75 100 150 200